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News
Winter
2021
Get the right information
when you need it.
— The new GIB® System Selector.
— How about adding curving to your wall and ceilings.
— GIB Weatherline® fire system options for external walls.
Prioritising GIB® plasterboard waste
minimisation and recycling
Our approach is to firstly look at ways to lining stage. The bins when full are then Auckland Area
SUSTAINABILITY minimise plasterboard waste created in uplifted and sent to a local recycler where Green Gorilla
the first place. We are actively working to the gypsum core is extracted and reused greengorilla.co.nz / phone 09 636 2244
by Gordon White develop practical industry tools that help in a range of horticultural and agricultural
Market Manager – customers to do this. products.
Nelson Area
Residential
Waste Management
However, we also need to recognise the This is great news for trade customers
wastemanagement.co.nz
need to work with the wider construction operating in these areas who have been
Zoie Bryce -
industry to find viable solutions to dispose seeking onsite plasterboard recycling
ZBryce@wastemanagement.co.nz
The New Zealand building industry is of plasterboard offcuts generated during service options. It’s also very useful for
becoming increasingly aware of the the interior lining process. That’s why we Homestar and Greenstar projects as
importance of reducing the growing level are also helping to facilitate plasterboard it can help customers claim points for Christchurch Area
of construction waste ending up in landfill. recycling options wherever practical. waste diversion under these schemes. Waste Management
Winstone Wallboards is actively exploring wastemanagement.co.nz
innovative ways to reduce the level of Nelson, Christchurch and Queenstown With onsite collection and recycling services Margot Hall -
plasterboard waste being generated. Offcut Recycling Services Now now operating in Auckland, Nelson, MHall@wastemanagement.co.nz
Available Christchurch and Queenstown, over half
Working closely with customers, local of the New Zealand plasterboard market Queenstown Area
councils and waste specialists, Winstone In addition to the Auckland service, has some form of offcut recycling options All Waste
Wallboards is exploring a range of long plasterboard onsite waste collection available. allwaste.co.nz / phone 0800 255 927
term waste minimisation solutions which is and recycling services are now also
Waste Management
especially relevant given that recent data available in Nelson, Christchurch and While this is good progress, Winstone
wastemanagement.co.nz
collected from New Zealand construction Queenstown areas. Wallboards recognises the need to
JDana Tosh -
sites indicates that timber and plasterboard continue working with the industry, waste
JMcEvoy@wastemanagement.co.nz
offcuts contribute the largest percentage Customers working on new build projects providers and regional councils to further
of construction waste currently entering can have ‘plasterboard only’ bins expand recycling capability into other Read further on page 2
New Zealand landfill sites. delivered to site during the interior regions where it is viable to do so.
GIB® News Winter 2021 1
A CHALLENGING chain and New Zealand port issues, chain capacity, particularly in terms of assured local board manufacturing
we are looking to improve our stock services to New Zealand, will lead to capability to meet the expected increase
MARKET
position of imported materials”. little, if any, improvement in the position in demand.
going forward.
FOREWORD As many of you are experiencing, our At the same time Winstone Wallboards
demand is up on last year’s forecasts The construction of the new will continue to be focussed on meeting
by David Thomas and I am pleased to say that we have manufacturing/distribution facility in today’s customers’ needs, with special
General Manager been able, in general, to meet that Tauriko began in earnest in January attention to the quality and suitability of
demand. The exception of course is this year and we are on track to begin our products and systems, the provision
in the compounds area where the commissioning in the first quarter of of training and advisory services, and the
availability of raw materials has severely FY 2023. Obviously we are very excited execution of our delivery promises. This
impacted our ability to maintain our by the benefits this project will bring edition of GIB® News carries much more
In October last year I said to you normal service standards for part of the to Winstone Wallboards, the built commentary on such matters, including
“We are very confident that we have product range. Measures to improve our environment, and New Zealand at large, steps we are taking in the sustainability
sufficient manufacturing capacity to stocks of imports have met with mixed with an improvement in our carbon area. I do hope you enjoy your read.
meet our forecasted demand, and success and, despite our best efforts, emissions footprint, an ability to recycle
being mindful of potential global supply it seems most likely that global supply water and plasterboard waste, and an
Continued from page 1 Tauranga GIB® Plasterboard plasterboard waste, including the ability around 100 permanent jobs in the region
Manufacturing Plant 2023 to accept plasterboard offcuts back into once the plant opens.
Other Regions the new plasterboard manufacturing
Winstone Wallboards recycling process. Designed with sustainability To learn more about the new Tauranga
capabilities will also receive a further front and centre, the facility is also set to manufacturing plant visit gib.co.nz/
Winstone Wallboards is currently
boost in 2023, with the opening of the reduce carbon emissions by up to 10%. gib-news/new-tauranga-facility
working with local waste diversion
new GIB Plasterboard Manufacturing
®
providers to expand plasterboard waste
and Distribution Facility in Tauriko, In addition to the positive environmental
recycling options.
Tauranga. impact the new plant also will offer local
To learn more about plasterboard employment benefits with more than
offcut services, visit the The new plant will include extensive 300 workers involved on site during the
GIB website gib.co.nz/sustainability
®
recycling capabilities for both water and construction phase, and the creation of
CRUSADERS KIDS DAY One hundred of Christchurch’s most Bryn Hall, Chay Fihaki, Fergus Burke, to keep energy levels high (including hot
enthusiastic rugby fans poured into Rugby Tamaiti Williams and Dallas McLeod. dogs, chips, pizza, sushi and soft served
KNOCKS IT OUT OF
Park on March 16, to meet their heroes cones), and several signed Crusaders
THE PARK and pick up a few new ball skills. Together the players spent the afternoon jerseys up for grabs, it’s little wonder the
teaching the throng of excited kids day was such a huge success.
EVENTS The 2021 GIB Crusaders Kids Day saw
®
invaluable rugby skills that will set them
the St Albans Crusaders headquarters up for the coming season. From Rippa Here’s to another fantastic event run by the
by Barbara Tie packed out with children itching to Rugby and line out drills, to a tug of war GIB® team. We’re already looking forward
Events Coordinator meet their favourite players - and they and bouncy castles, there was never a to the GIB® Crusaders Kids Day 2022!
Christchurch weren’t disappointed! Richie Mo’unga, dull moment. Children were split into age
Sam Whitelock, Sevu Reece, Ethan groups and parents even got a taste of
Blackadder and Quin Strange were out the action, with the chance to join in on
in force, joined on the field by teammates some of the activities. With plenty of food
2 Winter 2021 GIB® News
COHAUS – PROVIDING
A COMMUNITY
SPIRITED
ALTERNATIVE
SYSTEM SPECIFICATION
by Arama Black
Architectural Sales
Manager
A unique housing project in Auckland’s walk-ups, or in a central city location,” consideration for the creation of shared Technical back-up is very good, site
Grey Lynn is providing a community- says Thom. spaces or communities. By shifting the problems can be solved, and the
spirited alternative to New Zealand’s design and responsibility back onto the products are known to suppliers and
traditional residential development models. Four years in the pipeline, Cohaus is eventual residents, we align incentives to sub-contractors.”
about to roll out the welcome mats. create good quality durable housing stock
Cohaus – an owner-driven multi-unit With 20 affordable and compact units, with a clear goal to facilitate community Isaac Johnson from LEP Construction
residential build on Surrey Crescent – is plenty of communal spaces, and a big- creation and contribute to the local installed GIB Weatherline® and was
the brainchild of two Auckland families hearted group of like-minded residents, neighbourhood.” pleased with the results, saying “We
determined to do things differently. its success could signal a change for the started installation in July last year and
Disillusioned by New Zealand’s existing future of residential housing development. Not surprisingly, when it came to choosing finished in late August. We’ve installed this
housing developments, the families pooled building materials for the project, there product on a few jobs now. As long as the
their resources to create a co-housing “Essentially all our new housing in New were some very specific requirements. screws, tapes and sheet set outs are done
scheme with community at its heart. Zealand is provided by private developers Materials had to be non-complex, super- correctly, it looks good and is easier to
in the open market for profit. The market durable, as maintenance-free as possible install than similar alternatives.”
Architect, developer, and part-owner Thom is optimised for, and experienced in, and with a low toxicity and carbon footprint.
Gill believes it’s the first project of its kind in delivering detached 1-2 storey houses and GIB Weatherline® fit the criteria, while also And according to Thom, the support from
the country - and he can’t wait to move in. cheap high-density apartments for sale providing fire and bracing solutions required Winstone Wallboards was the icing on the
off-the-plan,” explains Thom. for a multi-residential development. cake.
“We’re only aware of two other such
schemes that have been built in New “These typologies and associated “GIB® Systems are comprehensive and
Zealand, but none have been multi-storey drivers create housing stock with little cover all potential system requirements.
Environmental certifications
An EPD is like a nutrition label, but instead
SUSTAINABILITY of calories, it covers carbon footprint,
embodied energy and other environmental AUSTRALASIA
by John Jamison data. This allows the developer to
Technical Manager choose the right product for their build,
recognising that what is ‘green’ in one
context may not be green in another. How Does It Work? Environmental Certifications Benefits
EPDs are important for green building, Under the Environmental Product — Increased customer trust by using
In 2018, Winstone Wallboards, published particularly in the commercial sector, Declarations Innovation Challenge within third-party verified certifications.
the first Environmental Product as they contribute points under Green Green Star, a project is eligible for: — Certifications provide Green Star/
Declaration (EPD) for plasterboard in Star, LEED, BREEAM and other rating Homestar and Living Building
Australasia, accompanied by the Declare tools and quantifies the environmental — 1 point where 2 different products Challenge evidence for our
Label and Global GreenTag. performance of plasterboard including its hold current EPDs, or customers, making our products
carbon footprint. — 2 points where 6 or more different easier to select.
Each of these certifications prove in products hold current EPDs. — Identification of manufacturing
a transparent and third-party verified Declare is offering specifiers, contractors improvement opportunities.
manner, the good environmental and building users insight into the The EPD for GIB® plasterboard meets
properties of plasterboard. ingredients used in the manufacture of NZGBC’s criteria to qualify as a product- Contact details
building products. All ingredients in a specific EPD and is therefore eligible for the
“A key difference to other certifications product with a content over 0.01% need full points. EPDs can also be submitted as Development Manager thinkstep (EPDs):
is that EPDs quantify the environmental to be disclosed, and checked against a an innovation challenge within Homestar, info@thinkstep-anz.com
performance of GIB® plasterboard”, Red List of harmful compounds. although the developer needs to have this
says Barbara Nebel, Managing Director accepted by NZGBC first. GreenTag: globalgreentag.com
of thinkstep in Australasia. thinkstep Global GreenTag distinguishes the
supported GIB plasterboard in
®
products that have been made in the Declare: Fiona Caulfield info@declare.nz
When you’re next submitting a tender
developing Winstone Wallboards EPD and most planet-friendly way possible and for a commercial or public building, think
have completed over 700 EPDs globally. contributes maximum points towards For further information go to
about submitting the GIB® plasterboard
Green Star and Homestar projects. gib.co.nz/sustainability
EPD along with it.
GIB® News Winter 2021 3
ADNZ budget, and a new build with a Homestar
10 rating – a world leading standard for
ARCHITECTURAL
design, construction and efficiency.
BUS TOUR: WHERE
MEMBERS LIVE For Winstone Wallboards, the tour was
a wonderful way to engage with the
design community and bond over their
EVENTS
shared love of design and architecture, a
fantastic day out, and a great opportunity
by Clara Sumner
to connect with others in the industry.
Partnership Manager
At each property, designers provided a
briefing of the design of their home and
outlined any challenges they faced – from Photo: Site Architecture -
Clementine Lane Home
A sneak peek into the homes of some of budget, to site, to earthquake rebuild
Christchurch’s most talented designers challenges. This inevitably led to insightful
provided plenty of inspiration for the 35 discussions around performance, material architecture-loving owners, while a owner, creating a beautiful family home
attendees of this year’s ADNZ Canterbury/ choice, function and – most importantly couple of the others faced the challenge designed to accommodate an elderly
Westland architectural bus tour. – enjoyment. of building family homes on difficult hill father. There was lots of diversity!
sites that really challenged the creative,
Focussing primarily on the Mt Pleasant- This year each home was completely particularly when working within a defined Organised by architectural designer Faye
Redcliffs area, the March 2021 tour took different but what was really interesting budget. One of these homeowners first Pearson-Green, the event is sponsored
in seven of the city’s most interesting was that many had an earthquake child was born around the time the build by ADNZ Principal Partner GIB®, with
architectural gems, from a 70’s treasure story to tell. One of the homes was started and another home was built on additional support from Firth and APL.
originally designed by the late Don Cowie deemed a write-off after the earthquakes a site demolished due to earthquake The architectural bus tour is always a
to a home innovatively crafted on a but was painstakingly saved by its damage, abandoned by the previous calendar highlight.
GET THE RIGHT
INFORMATION WHEN
YOU NEED IT
We know from experience that going the repair some multilayer intertenancy It worked a treat! Everybody walked The icing on the cake? When the building
extra mile can make a massive difference walls. Everyone was doing their best, but away with a greater knowledge of inspector came back for a reinspection,
to the speed and success of a project. working independently, which ultimately GIB Shaftwall systems and our
®
they passed with flying colours.
led to disagreements and reconstruction. GIB® Panelshaft option, and a far better
A recent call to the GIB® Technical understanding of the WHY behind the By getting a technical advisor out to site
Helpline was a perfect case in point. A After a failed inspection, several calls WHAT. Not only that, but we were able quickly, what could have resulted in big
project team needed some very specific and e-mails, we decided the best way to help with a comprehensive plan for delays was resolved promptly, enabling
detailing and construction methods for forward was to meet with the designers, repairing the damaged IT walls, saving the project to keep moving forward.
GIB Fire Rated Systems, and to add to
®
builders and inspector on-site, to get time, and taking away the guess work.
the challenge, they also needed to everyone on the same page. For more information visit gib.co.nz or
call the GIB® Helpline 0800 100 442.
EVER WONDERED
HOW TO INSTALL
GIB-COVE®?
PRODUCT
by Cath Montgomery
Once installed and painted, your
Product Manager
GIB-Cove® enhances interior styling as
well as creating a stable system that ties
Add value and
walls and ceilings together which minimises
the chance of joints cracking. The larger
style into your
Well wonder no longer, in three concise
videos you can learn all you need to
profiles can also be retro fitted over smaller
profiles or traditional timber scotias.
next project with
know to correctly handle, store and
install GIB-Cove®. Russell Pedersen our Go to gib.co.nz/site-guide-and-install/ one of the GIB-
Cove® profiles.
Technical Support and Training Manager installation-videos/ to watch the videos
takes you through it step-by-step in our and find out just how easy it is to install
training bay. GIB-Cove®.
4 Winter 2021 GIB® News
Requirements led search:
Looking for a two-way fire-rated system for
a wall with a resistance rating of 60? No
problem. Quickly find products that meet
the exact requirements you’re after, using
our interactive filters to refine your results.
Easily compare filtered results:
The new GIB® System Selector The filtered results are grouped together
and colour coded by the GIB® System
— Find what you’re looking for, faster. books - the listing displays their key
performance ratings, making it easier to
— Key selection criteria tailored to your way of working. find the right products at a glance. Hover
— Easily compare your filtered results and save your findings in the ‘Your Favourites’ function. over the System Diagram to quickly view
its configuration or click on a System to
Individual systems are now colour coded, For further information visit see the full details including all the CAD
WEBSITE for easy identification as to which System gib.co.nz/gib-system-selector or files for that System.
Manual they refer to. scan the QR code and watch a
by Sarah Joblin short intro video.
Marketing Coordinator We have created an information ‘hub’ for
each individual system, which includes
an overview of the system, and any
related literature. You’ll also be able to
quickly access relevant CAD drawings,
Need help choosing a GIB system? This
®
under the ‘CAD Details’ tab. Where
is the new and improved tool for you. available, CAD details can be downloaded
in bundles, in DWG, RVT or PDF. Save your favourites:
We’ve improved the search criteria, to
help you find the right system for the job. You now also have the option to ‘add to Do you need to find multiple files for a
Select the Application Type, then adjust favourites’ for when you wish to refer to single job, or compare between two
the FRR, Framing Type, Noise Control the same system again and again. similar options? Save multiple system
Rating and more. results using the ‘your favourites’ function.
GIB HANDIBRAC® anchored to stop the panel from ‘tipping’. only calls for a 100 mm slab thickness, some internal walls, then localised slab
‘H’ type bracing systems are often and the 140 mm screw bolt embeds thickening should be considered and
SCREW BOLT
placed near a slab edge and for panel 90 mm into the concrete. Whilst our factored into the design.
EMBEDMENT hold-down fixings we recommend the GIB® Technical Helpline has not had any
GIB Handibrac® which can be purchased calls from builders having drilled right For the lower of two-storey NZS 3604
TECHNICAL with a 140 mm long BOWMAC blue head through, there is a potential risk of the buildings, ‘H’ type elements can be
screw bolt. Expanding concrete anchors pre-drilled hole penetrating the slab and specified on external and loadbearing
by Richard Hunt are often not suitable near a slab edge, dampproof membrane. internal walls with the remainder as
Senior Technical and a further advantage of the screw outlined for single storey structures.
Engineer bolt is that it can be used on a timber Single storey NZS 3604 buildings
framed platform. tend to have low to moderate bracing A final word of warning. Insulated pod-
demand. We suggest that ‘H’ type type proprietary concrete slabs often
A marginal situation arises when NZS bracing elements are specified on have varying topping thickness and
GIB bracing elements requiring special
®
3604:2011 slab-on-ground construction external walls and GS1-N, GS2-N and the specification and layout of bracing
hold-down fixings at panel ends are is used and ‘H’ type elements are GS2-NOM elements internally as these elements must be carefully considered.
identified with an ‘H’, i.e. GSP-H, BL1-H, specified on internal walls of single are easier to install, permit the bracing
BLG-H and BLP-H. When load is storey buildings, or on non-loadbearing to be distributed over a larger area, and For further information refer to
applied to the top of high-performance internal ground floor walls of two storey don’t require GIB Handibracs . If higher
®
the GIB® Site Guide or call the
elements, the end studs need to be buildings. In these cases, NZS 3604 rated ‘H’ type elements are required on GIB® Helpline 0800 100 442.
GIB® News Winter 2021 5
GIB WEATHERLINE® The first port of call when designing find what your looking for in the Download the
with GIB Weatherline Rigid Air Barrier
®
GIB Weatherline literature try the
®
GIB Weatherline®
TECHNICAL
Systems is the GIB Weatherline® Design supplement at gib.co.nz/weatherline. PDF supplement at
SUPPLEMENT and Construction literature available gib.co.nz/weatherline or
AVAILABLE ONLINE online at the GIB® website but sometimes The supplement currently includes: call the GIB® Helpline on
additional specification material may have 0800 100 442 for further
been developed which might be useful — New GIB Weatherline 120min FRR
®
information.
LITERATURE
for a smaller number of projects and not two way fire systems.
warrant inclusion into the main manual. — New GIB Weatherline® 30min FRR
by Gordon White
one way fire systems.
Market Manager –
Winstone Wallboards keeps this more — Additional guidance for protecting
Residential
‘niche’ material in the GIB Weatherline ®
framing around external wall openings
technical supplement. So if you can’t from façade fire spread.
UNIQUE bracing, GIB Weatherline®, building wrap
and even the windows being installed in
DEVELOPMENT
the wall panels prior to delivery.”
ACHIEVES GROUND-
BREAKING ‘FIRSTS’ It also quickened the build and lessened
the impact of the development on-site.
SYSTEM SPECIFICATION
Huw says that environmental responsibility
was another key component of the brief
by Dennise Austin
and played a big part in material selection.
Architectural Sales
Not only is GIB® plasterboard Kiwi-made,
Manager
— Glulam timber floors (instead of the to the steep contours of the site, environmentally certified, non-toxic and
traditional reinforced concrete with and the local Newtown environment. compostable, but timber is a renewable
a floating batten and cradle flooring The design incorporates variation in raw material grown here in New Zealand,
system). cladding materials to break down the thereby limiting the emissions from
A generous benefactor, some ground-
— Inter tenancy walls made of building mass into a responsive and transportation.
breaking design, and a whole lot of
engineered double-framed Laminated sympathetic residential scale. Providing
engineered timber has transformed a
Veneer Lumber (LVL) timber studs much needed housing in the Newtown “The use of timber in construction
disused Newton site into much needed
with structural plywood bracing and area, the apartments are close to the is a keyway for the building industry
accommodation - and a steady income -
GIB plasterboard linings (for sound
®
hospital and ideally suited for worker to respond to the drive for climate
for Wellington charity, Mary Potter Hospice.
and fire ratings). accommodation.” change, by sequestering carbon from
— External walls made of LVL timber studs, the environment. Carbon in the form
The Mary Potter Apartments (Te Ara o
plywood bracing with weathertightness of C02 is captured and stored as trees
Puanga) is the brainchild of benefactor
Mike O’Sullivan who wanted to set the
provided by self-adhesive building wrap
over the GIB Weatherline external Rigid
®
GIB Weatherline® grow, offsetting the emissions produced
through the production of materials such
charity up with an enduring form of
financial security to offset its reliance
Air Barrier system.
— The combination of the GIB systems
®
played a as steel and concrete.”
on public donations. Designed by
Archaus architect Huw Parslow, the
and timber construction provides
exceptional acoustic ratings for both
starring role in The unique Te Ara o Puanga
development has been extremely well
41-apartment development is tucked
behind the existing Mary Potter Newtown
Impact Sound Insulation Class (IIC
60) and Airborne Sound Transmission
construction. received and is a project that all those
involved are deservedly proud of.
facility on a small, steep, brown field site
Class (STC 65).
and is predominantly constructed of When the alternative fire rated boundary Adds Huw, “Te Ara o Puanga is a
— The building is seismically restrained
prefabricated engineered timber walls and wall system failed to provide adequate sensitive and successful development
with steel vertical tie rod bracing
mass timber floor panels, all manufactured protection to the steelwork in the wall providing much needed accommodation
elements.
off-site and craned into place. system depth, the project team opted to on a disused site in a socially and
Four years in the planning stages, the use the GIB Weatherline system.
® environmentally responsive fashion, for a
“A key driver for the Hospice was a project saw many different design worthy client.”
respectful development that would not iterations before the final building was “GIB Weatherline was incorporated
®
cause undue stress for the patients in agreed upon. Following a hearing, it was as the Rigid Air Barrier for the entire Design and Construction Team
their care, the staff they employ, or the granted a Limited Notified Resource wall envelope of the building, which
wider community,” says Huw. Consent under the Housing Accords streamlined the wall types and allowed — Designed by Huw Parslow and the
and Special Housing Areas Act 2013 for the multiple cladding types to align team of Archaus Limited (Architects)
“The drive to combat noise on-site (HASHAA). The increase in densification at the substrate without deviation or — Engineered by Daniel Moroder and
and create a more environmentally and additional height provided by the additional complexity in the façade.” the team of PTL Engineers
responsible development led the team HASHAA legislation - though challenging — Fabricated at the Concision Factory in
to use timber as the primary building - resulted in the existing early 1900s The project was the first commercial Christchurch
material and inspired the innovative use character properties on Mein Street being scale residential project to specify — Constructed by McKee Fehl
of off-site manufactory.” retained and renovated, safeguarding the GIB Weatherline®, and the first one in Construction under the watchful eye
character of the broader Newtown area. Wellington to employ the product in off- of Ilan Fisher the site manager.
The project is the only engineered timber Construction kicked off in late 2018. site manufactory.
framed development of its scale and type For further information go
in Wellington and it incorporates a host of “The building is a split-level series of “Off-site manufacture meant greatly to gib.co.nz or call the
unique features, including: interconnected volumes that respond reduced on-site noise, with the plywood GIB® Helpline on 0800 100 442.
6 Winter 2021 GIB® News
GIB WEATHERLINE® Winstone Wallboards recommends
specification GWTLE 30 for timber
FIRE SYSTEM
framed external walls unless a fire
OPTIONS FOR resistance rating (FRR) above 30 minutes
EXTERNAL WALLS is required.
TECHNICAL
by Hans Gerlich
Senior Technical
Engineer
In 2020 the Ministry of Business, Innovation
Figure 1: GWTLE 30 Figure 3: GWSE 60
and Employment (MBIE) released updated
fire safety guidance for external wall
cladding systems. Multi-Level Buildings Between 10 and Multi-Level Buildings Over 25m in
25 Metres: Height
MBIE Guidance Revision 2: 2020 aims to
provide greater clarity around external wall NZBC Acceptable Solution C/AS2 and NZBC Acceptable Solution C/AS2 and
cladding systems fire performance, how associated MBIE Guidance Revision associated MBIE Guidance Revision 2:
to interpret New Zealand Building Code 2: 2020 suggests combustibility limits 2020 suggests combustibility limits on
(NZBC) fire performance requirements on cladding materials, including the cladding materials, including the rigid air
and whether international alternative fire rigid air barrier. There are no additional barrier. As one means of compliance,
tests and evaluation methods are suitable requirements for the supporting framing the MBIE Guidance states that timber Figure 4: GWTLE 60b
for use in New Zealand. to be protected or to have an FRR. framing may be used if protected with a
robust limited combustibility lining that Requirements can vary depending
GIB Weatherline® Rigid Air Barrier Systems GIB Weatherline® has an A1 non- can be shown to prevent framing char on your locality and Building Control
offer a range of locally tested options to combustible classification and can be used for 30 minutes when exposed to the test Authority. To achieve compliance with
help meet the updated guidelines as well as a cladding substrate on timber or steel conditions of AS 1530.4. the current MBIE Guidance provisions for
as the requirements of NZBC Clauses C1- framing. Unless a higher FRR is required, prevention of char, specification GWTLE
C6 – Protection from Fire. Winstone Wallboards recommends a 60 GIB Weatherline® has an A1 non- 60b can be used.
minute FRR using specification GWTLE combustible classification and can be
Which GIB Weatherline Fire Rated
®
60a for timber framed external walls, or used as a cladding substrate on timber Alternatively, compliance can be
System is most suitable for my project? GWSE 60 for non-loadbearing steel stud or steel framing. 13mm GIB Weatherline ®
achieved if the complete external wall
framing, additionally clad with compliant is a robust non-combustible rigid air is subjected to medium or large-scale
Selecting the most suitable GIB Weatherline ®
cladding materials. barrier, and although some framing char fire testing. For tested systems with a
fire rated system for your project is typically can be expected immediately above the 13mm GIB Weatherline® substrate go to
driven by the height of the building and fuel source when tested in accordance gib.co.nz/weatherline
the resulting NZBC fire performance with BS 8414, recent research shows
requirements. that this does not contribute significantly To download the GIB Weatherline®
to façade fire spread. Supplement go to gib.co.nz/
Multi-Level Buildings Under 10 Metres: weatherline or call the GIB® Helpline
Unless a higher FRR is required, 0800 100 442.
NZBC Acceptable Solution C/AS2 and Winstone Wallboards recommends a 60
the associated MBIE Guidance Revision minute FRR using specification GWTLE Download CAD details from
2: 2020 does not contain specific 60a for timber framed external walls, or the GIB® System Selector at
requirements for external walls and Figure 2: GWTLE 60a GWSE 60 for non-loadbearing steel stud CAD
gib.co.nz/weatherline
cladding systems for multi-level buildings framing, additionally clad with compliant
under 10 metres in height. cladding materials.
UPDATES TO THE Compliance with NZ building code 180 Day system exposure prior to
clauses C1-C6 - protection from fire: cladding:
GIB WEATHERLINE®
DESIGN AND — GIB Weatherline® Systems can be used Once installed, all GIB Weatherline®
CONSTRUCTION to provide passive fire protection to meet components can be exposed for up to
LITERATURE the requirements of NZBC Clauses 180 days prior to the installation of the
C1-C6 - Protection from Fire, including cladding.
options to limit vertical fire spread.
LITERATURE
Updated technical guidance including:
Updated GIB Weatherline fire systems:
®
Winstone Wallboards has released an — Guidance on the use of
update to GIB Weatherline Rigid Air
®
— 6 Fire rated protection systems for water resistive barriers with
Barrier Systems which are included in columns and beams including 30 and GIB Weatherline® Systems.
the new GIB Weatherline Design and
®
60 minute FRR options. — Guidance on stopping and painting.
Construction literature March 2021. — 2 New fire rated soffit details including — Updated construction details. To download the new
30 and 60 minute FRR options. — New 2450 x 10mm GIB Weatherline ®
GIB Weatherline® Design and
The updates include: — Use of insulation now optional in all sheet size, tailored for use in Construction manual go to
GIB Weatherline Fire Rated Systems.
®
residential projects. gib.co.nz/weatherline
GIB® News Winter 2021 7
HOW ABOUT ADDING Minimum Bending Radii of GIB® Plasterboard Framing Centres
Note For performance systems, refer to
the relevant specification sheet for the
CURVING TO YOUR Board Maximum Stud,
Minimum Minimum Wall or Ceiling fastener and nog requirements.
WALL AND CEILINGS? thickness
/type
radius (wet)* radius (dry) Radius
Batten or Joist
Spacing
10mm Application Method
900mm – 1200mm 200mm
GIB® Plaster- 1000mm 1200mm
TECHNICAL board ** — Ensure that framing spacings in the
1200mm – 3000mm 300mm
13mm
table above are correct.
GIB® Plaster- 1200mm 1500mm
by Frank Kang 3000mm – 4000mm 400mm — Sheets must be fixed horizontally to
board ***
Technical Support and 600mm (450mm walls.
Development Engineer * Not applicable to GIB Weatherline® for 10mm GIB®
Over 4000mm
© Winstone Wallboards Limited 2016. TERMS OF USE: The USER of these CAD drawings and related information is authorised to reproduce and distribute exact copies or exact extracts of these CAD drawings for the sole purpose of detailing, — If possible, select board length to allow
rigid air barrier and GIB Aqualine® Plasterboard in ceiling
specifying, using, and promoting the use of Winstone Wallboards Ltd products and systems. It is the USER's responsibility to ensure full building performance specifications and to ensure specification and installation of GIB® products and
systems are in accordance with Winstone Wallboards Ltd GIB® publications. Appropriate expert advice should always be obtained to ensure suitability of these drawings for your specific application. See www.gib.co.nz for full terms of use. The
for one unbroken panel to cover the
USER is deemed to accept the terms of use.
** Includes 10mm GIB Weatherline® applications)
rigid air barrier entire curve with enough extra length
*** Includes 13mm GIB Weatherline®
rigid air barrier but excludes 13mm
to extend 300mm beyond each end.
Designers often offer curved design options GIB Toughline® and — When curving ‘wet’, apply water with a
for a well-rounded space. GIB® plasterboard GIB Toughline® Aqua paint roller to both sides. Approximately
can be curved. 40 mL/m2 of water and 10 minutes set
Effective walllength
length
time are required.
Effective wall
Curvature is dependent on the thickness — When creating an outside curve, begin
Fram
and whether the board is applied wet or dry. m inggccee
in
nntrtr
ese s installation at one end and fasten the
sheet as it is wrapped around the curve.
Additional development work by the — When creating an inside curve, start
GIB® Technical Team has updated fastening the sheet at the centre of
the minimum bending radii of various GIBGIB EzyBrace®
EzyBrace bracing
bracing element
element
® the curve and work outwards to the
product and framing centres, resulting end of the sheet.
in the tables below. The radii shown are
for GIB® Standard and GIB Ultraline® The development work found that curving
as well as other performance boards GIB® plasterboard requires patience.
s
diu
Ra
such as GIB Fyreline®, GIB Aqualine®, Rushing the curving process can result in
GIB Braceline GIB Noiseline ,
® ® board breakages. Taking your time and
GIB X-Block® and GIB Weatherline®. allowing the board to take the curve is the
best approach. The typical time taken to
It is not recommended to curve thicker successfully fit a board to a curve is 30 -
and some high density boards such 40 minutes.
as 16mm and 19mm GIB Fyreline®, Note Lining the inside of the curve will
GIB Toughline®, GIB Toughline® Aqua be more difficult than lining the outside.
Stud spacing GIB® Grabber ® screws
and GIB Barrierline® due to the risk of depends on around perimeter only This will require additional labour and the
breakage. curvature GIB® plasterboard must be curved prior
© Copyright 2016 Winstone Wallboards Ltd All Dimensions are to be site checked before construction and installation
Curved walls can be incorporated GIB® Intertenancy Barrier Systems GIBFix® Adhesive at
File: GNSWIP008 Curving GIB® Plasterboard to installation.
Issue: 1602
GIB® plasterboard Scale: 1 : 10 300mm
Reference centres in
into performance systems provided Curving GIB® Plasterboard
fixed horizontally Date:
10 May 2021 sheet body
GNSWIP008
Download the
the curving is carried out strictly in GIB® Site Guide
accordance with the application method in Sheet carried 5-10mm gap between PDF supplement at
this bulletin. The curving must not weaken minimum 300mm bottom edge of lower
gib.co.nz/site-guide-and-
beyond end of sheet and floor
or crack the gypsum core. The projection curvature install/ or call the GIB
of a curved GIB EzyBrace® bracing Helpline on 0800 100 442.
element should be used as the effective
wall length, as illustrated right. 300mm
PROTECT WET AREAS Maximum tile weights at 600mm
The updated GIB® Wet Areas Systems
technical literature includes:
WITH GIB AQUALINE® - maximum stud centres
NEW ZEALAND'S NO 1 10mm GIB Aqualine® 26 kg/m2
— Increased fastener space tolerances
WET AREA LINING* 13mm GIB Aqualine® 40 kg/m2
for GIB Aqualine® for tiling from
100mm to 150mm centres.
— Updated NZ Building Code Clause E3
LITERATURE
With its reinforced water resistant core guidance.
and easy score and snap installation, — New CAD details including tiled
by Jennifer Haraki
GIB Aqualine® is New Zealand's number shower recess details.
Technical Adviser
one choice for internal wet area linings
and has been trusted in over 1 million Download the GIB® Wet
kiwi bathrooms over the last 25 years*. Area Systems literature
PDF
at gib.co.nz/gib-wet-
GIB Aqualine®, gives added strength GIB Aqualine® featured in the area-systems/ or call the
that easily supports the weight of tiles to GIB® Wet Area Systems literature is a GIB® Helpline 0800 100 442.
provide a solid, stable backing and can best practice guide for areas where
now comfortably handle the vast majority there is intermittent water exposure and *Based on BRANZ Wet Area Lining Report
of tiles commonly used in New Zealand up splash zones within residential and non- ER10093 January 2020 and annual M² sold of
to 40kg/m2 tile weight. residential buildings. GIB Aqualine®.
8 Winter 2021 GIB® News
CEILING DIAPHRAGMS Whilst not a bracing element itself, a Linings have to be installed over the It is critical for there to be a strong
GIB plasterboard ceiling diaphragm is
®
entire area of the diaphragm. Fasteners connection between the ceiling and the
- LET'S START WITH
a stiff and strong horizontal component are placed at specific centres around the walls for the load transfer. When planning
THE BASICS which transfers loads to connected bracing perimeter of the ceiling diaphragm using your sheet set out, use full width sheets
walls/lines exceeding 6m separation (or the GIB EzyBrace® fastener pattern. For where possible. Minimum sheet size of
TALKING TRADE 7.5m with dragon ties) to a maximum of GIB Rondo Metal Battens, a metal
® ®
600mm x 1800mm provided all adjacent
12m (if you have a double top plate). channel or metal angle is required at the sheets are back blocked.
by Russell Pedersen perimeter of the diaphragm. When using
Technical Support Any 10mm or 13mm GIB® plasterboard double top plates (rather than a 140 x 35 If a Level 5 finish is required, or for larger
and Training Manager can be used for a GIB ceiling diaphragm
®
packer plate) a metal channel or metal areas, other back blocking requirements
and both timber and steel battens can be angle is required around the perimeter. may apply.
used for the structure of the diaphragm.
This requirement also applies to changes For more information refer to
Here at the GIB Helpline, we get a
®
The basic shape of a ceiling diaphragm in the pitch such as in a coved ceiling or the GIB® Site Guide or call the
tonne of confused calls about ceiling is square or rectangular (1:1 to 1:2). with scissor trusses. (Refer to the GIB® GIB® Helpline on 0800 100 442.
diaphragms. Protrusions that extend into (inside) the Site Guide page 69 for more information).
ceiling diaphragm, e.g. cupboards are not
The first question we always ask is, “is allowed. If a protrusion into the diaphragm Figure 1: Fireplace Flues and Range Hood Openings
it a GIB ceiling diaphragm?”. Why?
®
is necessary, then ceiling should be
Section view
Because under NZS 3604:2011 there constructed and lined first then the wall
Max. hole diameter 350mm
can be many different types of ceiling built up underneath. Protrusions that
diaphragms. And while some of them extend out from the diaphragm are fine as
have GIB plasterboard as the lining,
®
long as there is a connection across the
they’re not necessarily a GIB ceiling
®
jut out, to act as a load path.
diaphragm cut and pasted from our
GIB® EzyBrace systems literature. If a larger opening is unavoidable it must
be in the middle third of the diaphragm*.
So, let’s start with the basics. Ceiling Where fireplace flues or range hood Steel plate
0.55 BMT
diaphragms under light and heavy roofs are openings are required to penetrate the Seperation of
plasterboard Galvanised sheet
required to comply with NZS 3604:2011. diaphragm (outside the middle third), a Max. opening
and framing
galvanised metal backing plate can be from flue 350mm diameter.
required Installed prior to
Foundationally it helps to understand how used as shown in the image on the right.
as per NZ GIB® plasterboard.
bracing lines work – bracing lines are the building code.
imaginary lines running along and across *For guidance on openings in the Framing
90 x 45mm framing
the full length or width of a timber framed middle third, please see page 20 of our
Plan view trimmed to provide
building plan (they’re usually a maximum GIB EzyBrace® Systems Book. extra fixing.
of 6m apart). While these lines have no Min. plate size - hole diameter plus additional GIB® plasterboard
physical significance, they’re needed The length of a ceiling diaphragm 75mm on all sides ceiling
to control the positioning of bracing (measured between supporting bracing Installed over the
elements and allow even distribution of lines, not physical walls) cannot be more steel plate and into
framing using a
bracing and stiffness to the structure as a than twice its width. The supporting minimum of 32mm
whole. By understanding the bracing line bracing lines need a bracing capacity x 6g GIB® Grabber®
concept and not being restricted by exact no less than the greater of: 100 bracing High Thread or
32mm x 7g GIB®
placement of physical walls, designers units or 15 bracing units per metre of
Grabber® Dual
have more freedom with room sizes. diaphragm dimension. These supporting Max.
Thread screws at
150mm
walls are measured at right angles to the fastener 50mm max centre
spacing spacing.
Ceiling diaphragm confusion usually line being considered. Also note, the walls
stems from the tight rules to comply forming the supporting bracing lines, Max.
50mm
with the GIB® solution to diaphragm do not have to be within the area of the fastener
requirements, which makes the full list ceiling diaphragm itself as the entire line spacing
of requirements essential reading before is providing the support (assuming they
plans go to Council or the first sheet of are connected adequately to create the Plasterboard ceiling not shown in plan view
plasterboard is cut. continuous load path).
GIB RONDO® 310 have to be one of them. The GIB® Rondo®
310 metal ceiling batten is 35mm deep
CEILING BATTEN
and it can easily be used in place of
IN STOCK 70x35mm timber battens.
PRODUCT All you need to know about installation of
the GIB® Rondo® 310 batten can be seen
by Cath Montgomery in our series of short installation videos,
GIB® Rondo® 310 Batten Span Table for
Product Manager the latest clip shows the different options
Residential Internal Applications.
available for direct fixing or you can read
the one page overview. 310 batten GIB® Plasterboard
Maximum batten
thickness
spacing
Go to gib.co.nz/installation-videos/ single layer
There are many challenges facing the to watch the GIB® Rondo® 10mm 450mm
New Zealand building industry at present, installation video.
13mm 600mm
but sourcing a ceiling batten does not
GIB® News Winter 2021 9
GIB® GRABBER®
SCREWS – NOT
ALL SCREWS ARE
Average total load (kN)
CREATED EQUAL
PRODUCT
by Cath Montgomery
Product Manager
0.000 1.000 2.000 3.000 4.000 5.000 6.000 7
Displacement (mm)
GIB® Grabber® 32 by 6 Screws Supplier B 32 by 6 Screws
At times customers have asked “why do In addition to supplier testing, Winstone The chart above compares the — Continuity of supply, with Winstone
GIB Grabber screws cost more than other
® ® Wallboards' team of technical staff performance of GIB Grabber with an
® ®
Wallboards’ excellent supply chain
screws in the market?” Understandably regularly test the performance of alternative screw in a displacement test, team always ensuring large stock
without an explanation to this question, GIB Grabber Screws and occasionally
® ®
showing the GIB Grabber screws
® ®
holding to satisfy the highs of market
customers can get a bit frustrated. This other products available in New Zealand performance was superior. demand.
article explains why GIB Grabber screws
® ® to see how they perform in the GIB ®
In addition to the guaranteed quality of As one of our customers told us in
have been selected as the specified screws systems where GIB® Grabber® screws
the GIB® Grabber® screw comes with research completed in late 2020;
for all GIB® systems. are “constant high performers”.
many additional benefits including:
“It’s not so much about what it costs, it‘s
Every single shipment of GIB® Grabber® In bracing tests Winstone Wallboards’
— GIB Grabber Screws are tested in
® ®
about what it actually delivers – a tried
screws are put through rigorous testing testing has identified issues in other
all our GIB® Systems and we know and tested product with back up. That
before being shipped to New Zealand. fasteners such as:
they work. means I can trust it.”
Without exception, all fastener types
— Supported by the GIB Product and ®
in that shipment are tested. Constant — Heads snapping during testing.
Systems Warranty.
testing of both physical characteristics — Variation in head size which impacts
— Supported by the GIB® Technical For more information call the
and performance properties ensure that lateral load.
support team. GIB® Helpline on 0800 100 442.
GIB® Grabber® products are consistent — Inconsistent physical and material
in quality. properties which impact performance.
GIB BARRIERLINE®
COMMON MISTAKES
TALKING TRADE
by Dan Reynolds
Technical Advisor
One of the key things we do as the Q: I’ve been told I have to put clips on Q: Do I need to fire rate the flush boxes situations which involves use of a number
GIB® Technical Support team is trouble every row of nogs? and switchboard? of aluminium L clips to take the weight.
shoot installation issues. We prefer to be Refer to GNS310 on the GIB® website.
there helping answer questions before A: No, GIB® Wall Clips only need to be A: Anything under 90x90mm you won’t
anything becomes an issue but often we placed within 600mm of the top of each need to fire-rate. Something larger like Q: I have a section of GIB Barrierline®
get calls to come to site once an issue has GIB® H-stud, no further than 3000m a switchboard you will need to build wall “outside” onto a deck area, do we
raised it’s head, like a failed inspection. vertically. a baffle box in the framing. We have have to put insulation out there too?
guidance on how to do this in our
One of the things that comes up Q: GIB Barrierline has been out in the
®
GIB Noise Control® systems literature. A: No, the insulation is only there to assist
reasonably often is issues arising from heavy rain for a few weeks now, is it with the Noise Control and seeing as it
GIB Barrierline systems installations.
®
going to be OK? Q: What do we do if we have a Ply is outside you don’t need that. In this
Interestingly, many of the issues seen on substrate for rubber tile roofing as situation you can use GIB Weatherline®
site with GIB Barrierline® can be easily A: GIB Barrierline®, once installed, can be opposed to roofing underlay and tin? for the outside wall linings too.
rectified or even avoided. exposed to the rain for up to 12 weeks.
The 16mm GIB Fyreline® fixed in the roof A: In that situation you don’t need The GIB Barrierline® system is relatively
Here are some of the most frequently space can be exposed up to 4 weeks. Mineral Wool at the top, just take the straightforward to install, take the time
asked questions and our answer: GIB Barrierline and 16mm GIB Fyreline
® ®
to read the instructions in our literature
Q: Can we use the GIB® H-stud up to the underside of the Ply and apply beforehand as most of what you need is
Q: I’m struggling to get the GIB Wall Clips
®
horizontally at the end of the 3m long some GIB Fire Soundseal . ®
in there.
onto the H stud because it’s behind a sheets?
timber stud. Q: How do we address a cantilever at the If you get stuck, don’t guess,
A: No, this must be a Rondo® 140 end of a building? give us a call on the
A: As you install the GIB Barrierline sheets®
Perimeter Channel, these are placed GIB® Helpline 0800 100 442 or go to
you can cut them down, even by 30-50mm back to back and screwed together. A: We now have a recently developed gib.co.nz/barrierline
to make this line up for clip fixing. detail for how to address most cantilever
10 Winter 2021 GIB® NewsINSTALLATION OF linings. There is no need to check in the
framing as is recommended when fitting
GIB HANDIBRAC® –
conventional straps.
PANEL HOLD-DOWN
BRACKET The use of the GIB HandiBrac® allows for
installation and inspection at any stage
prior to fitting internal linings. It is suitable
TALKING TRADE
for both new and retrofit construction.
by Doug Connors
Preparation and installation tips
Technical Advisor
— Use a 10mm diameter masonry drill
bit for a solid concrete substrate and Installation 05. Continue tightening the anchor
an 8mm diameter drill bit for fixing to until the head is firmly seated
Developed in conjunction with MiTek , ® a timber sub-floor. 01. Correctly position the GIB against the GIB HandiBrac® base.
the GIB HandiBrac® has been designed — Drill a hole into the base material to HandiBrac® to suit the sub floor In extremely dense material,
and tested by Winstone Wallboards for depth 8mm deeper than the required (refer GIB® Site Guide (2018) pp 63) use of an impact wrench is
use in GIB EzyBrace® elements that embedment and clean out the hole of 02. Install the hex screw (see red circle recommended.
require hold-downs. dust and debris prior to installation of above) located in the bracket base 06. Be sure the bolt is at the required
BOWMAC® screw bolt. when it is in the required position. embedment depth.
The GIB HandiBrac® with BOWMAC® — Use a quality hexagonal socket with a
03. Insert the blue bolt through the GIB 07. Install remaining four screws into
blue head screw bolt is suitable for ratchet spanner.
HandiBrac® into the hole and begin the face of the timber stud.
timber and concrete floors constructed in — During installation debris or dust
tightening the bolt by applying 08. The installation is now complete.
accordance with NZS 3604:2011. created by the thread cutting action
forward pressure when engaging
may cause some resistance to be
the first thread.
The use of the GIB HandiBrac® provides experienced. This is easily overcome For further information refer to
quick and easy installation. As the by unscrewing the BOWMAC® 04. Additional forward pressure may the GIB® Site Guide or call the
bracket is fitted inside the framing screw bolt for one turn or more be required for installation in high GIB® Helpline 0800 100 442.
this allows a flush surface for the wall and then continuing to fix to the full strength, dense base materials.
embedment.
Did you miss the latest Scan the QR code or go to
gib.co.nz/lbp-learning-resources
GIB TradeTalk ONLINE? ® and view at your convenience.
ROUND HOLES VS. of this test was to demonstrate how stiff and strong when you need it but will the element will always perform better.
the forces that are applied to a bracing sacrifice itself when it reaches a “cap”, or Another good example we are seeing
SQUARE HOLES
element “flow” through the sheet of ultimate limit. When it reaches near the more of on site is drilling 2 x 50mm Ø
plasterboard. When the plasterboard has top end of this limit, and the board can holes to create a flush box opening.
CASE STUDY a hole in it, the shape, size and position no longer absorb the stress, the forces
of that hole makes a big difference to look for the weakest point to release that The information on openings in
by Graeme Robertson how it will perform. tension. This is usually where there is a GIB® technical literature remains valid
Technical Advisor corner, or the thinnest piece to bridge, including the use of square openings.
The test was designed to demonstrate the energy will take a “shortcut” across This information helps to have insight
what is likely to happen when the forces the board in the form of a crack. On a into the “why” behind the “what” and the
hit a corner of a square hole, where a side note, as observed in the figures added benefits of using round holes.
crack is much more likely to propagate, below - Figure 3, the crack has aligned
One of the common topics we get calls as opposed to a what happens where itself with a screw. This is a correctly If you are unsure on how to
to the GIB Helpline for is bracing, and
®
there is a rounded corner or round hole. seated screw but is the nearest and approach a hole in a bracing
more specific, about holes being cut into This test also highlights the importance of weakest point in this area, how much element, feel free to call the
a bracing element. the location of the hole and the proximity more so if this screw was overdriven! GIB® Technical Helpline on
of the hole to the perimeter. 0800 100 442.
Recently we conducted a test in the How does this relate to practical use on
Lab using our P21 bracing test rig. The Plasterboard is an ideal structural the building site? When making holes in
test consisted of 2 oversized holes, one product, with its balance between rigidity any bracing elements, if there is an option
square and one round. The purpose and ductility. In simple terms that means: to round the corners, i.e. with a hole saw,
Figure 1: At the start of the test. Figure 2: Test specimen during racking. Figure 3: A close up of cracks after racking.
GIB® News Winter 2021 11You can also read
