Air Tightness Testing - Welcome to AIRAH WA's Division Event Thanks to our Event Sponsor
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Welcome to AIRAH WA’s Division Event
Air Tightness Testing
Presented by Alan Venn-Brown, M.AIRAH, CETEC
Thanks to our Event Sponsor
AIRAH acknowledges the traditional owners of Country throughout Western Australia and their continuing connection to land and culture. We pay our respects to Elders past, present and emerging. This Library is located on Whadjuk Country, the ancestral lands of the Noongar people.
Upcoming AIRAH WA Events 20 October: AIRAH WA Members’ Annual Lunch, Ascot Racecourse 9 November: AIRAH WA Emerging Trends Symposium 1-4pm 9 November: AIRAH Perth Industry Night 4-7pm 7 December: AIRAH Members’ End of Year Sundowner
Presenting Alan Venn-Brown, M.AIRAH, CETEC
Building
Permeability Testing
An introduction
Alan Venn-Brown
18 August 2021 CETEC PTY LTD 9
Air Leakage Mechanisms
Stack Pressure + Mechanical Systems + Wind
= Cumulative Opportunities for Leaks
18 August 2021 CETEC PTY LTD 10❖ Airtightness is the fundamental building
property that impacts infiltration and
Building Air exfiltration (the uncontrolled inward and
Tightness and outward leakage of outdoor air through
cracks, interstices or other unintentional
its effect on IEQ openings of a building).
and Energy
❖ An air velocity of 8m/s (30kph/ 15 knots)
creates 50Pa Velocity Pressure
18 August 2021 CETEC PTY LTD 11❖ Energy efficiency (building
performance)
❖ Ventilation and Moisture control
Benefits of ➢ Prevent infiltration of unfiltered air (less
dust, smoke and smells)
Air Tightness ➢ Prevent mould growth by reducing
moisture and water vapour ingress
Testing ➢ Improved infection control (Hospitals and
aged care)
❖ Prevents rust, mould and rotting of
building materials (esp. Indoor pools)
18 August 2021 CETEC PTY LTD 12Greenstar Buildings.
❖Delivers a new definition of a ❖Pre-Design Phase
sustainable building ➢ How Tight? Fabric Decisions
❖Responsible ❖Schematic Design
❖Healthy To achieve ➢ Identify Envelope Design Permeability
❖Resilient Certification, ❖Detailed Design Phase
➢ Barrier Detail, Review and QC Planning
❖Positive you must test!
❖Construction Phase
➢ Spot Testing, Site Inspections
❖Commissioning and Verification Phase
➢ Test, Report, Certify
18 August 2021 CETEC PTY LTD 13Methods and testing standards AS/NZS ISO 9972:2015 - Thermal performance of buildings – Determination of air permeability of buildings – Fan pressurization method ATTMA Technical Standard L1: Measuring Air Permeability In The Envelope of Buildings (Dwellings) – TSL1 ATTMA Technical Standard L2: Measuring Air Permeability In The Envelope of Buildings (Non- dwellings) – TSL2 ASTM E779 – 10 (2018) - Standard Test Method for Determining Air Leakage Rate by Fan Pressurization Passivhaus (Building Sustainability standard – 0.6 ACH) CIBSE TM23:2000 – Currently in review 2021 Version?? 18 August 2021 CETEC PTY LTD 14
What is ATTMA?
Air Tightness Testing &
Technical Standards
Measurement Association
❖Established in UK and managed by ❖TSL1 ATT of Dwellings (single
British Competent Testers Zone, 1 fan)
Association (BCTA) ❖TSL2 ATT of non-dwellings
❖Authors of the test standards and (complex buildings, multiple fans)
had them referenced in the UK
building regulations
❖Australia & New Zealand
established 2 years ago
18 August 2021 CETEC PTY LTD 15Building Layers ❖Water shedding Surface ❖Water Resistive Barrier ❖Air Barrier ❖Vapour Retarder Depending on climate order changes to allow components to dry
18 August 2021 CETEC PTY LTD 17
❖Define the Air Barrier up front.
❖Architectural Plans should
identify the Air Barrier
surrounding conditioned
spaces (Red Line).
❖Provides guidance for
construction.
➢Penetrate the Barrier and sealing
the hole is a mandatory.
➢Or Install an accessory!
18 August 2021 CETEC PTY LTD 18Trouble ahead- Metal Deck Roofs.
Where is the Air Barrier here ?
At the roof or on the ceiling line?
Which has more penetrations?
18 August 2021
CETEC PTY LTD 19In Real Life! August 18, 2021 CETEC PTY LTD 20
21
Details, Details 18 August 2021 CETEC PTY LTD 22
And more............... 18 August 2021 CETEC PTY LTD 23
Types of Testing
Qualitative and Quantitative
❖Portion of façade (up to 300Pa)
❖Blower doors
➢Whole Building
➢Guarded Test
❖Low Pressure Pulse Method
❖Building HVAC fans not feasible
18 August 2021 CETEC PTY LTD 24The Equipment – Blower Door Testing 18 August 2021 CETEC PTY LTD 25
Cost and Time?
❖Test cost: ❖A multi-fan test takes 2-
➢$3,000-$20,000 4 hours to set up,
❖Inspection cost: ❖1 hour for the test &
➢$800-$1,000 ❖1-2 to demobilise.
❖Thermal Imaging ❖+ any leak detection.
➢$1000 to $1500
18 August 2021 CETEC PTY LTD 26Advice is available 18 August 2021 CETEC PTY LTD 27
CETEC’s comprehensive process:- ❖Review project specification and provide advice. ❖Review drawings and provide advice on detailing, sealing and air tightness testing etc. ❖Site inspections to identify areas of improvement. ❖Spot Smoke Testing. ❖Thermographic Imaging on test space(s) to confirm Quality Control. Preventing Construction Mistakes 18 August 2021 CETEC PTY LTD 28
Buildings that have been tested 18 August 2021 CETEC PTY LTD 29
Thank you for attending, please join us for refreshments. Thank you to our Event Sponsor
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