Builder Forum Series: Fenestration and Step Code Presented by Township of Langley Green Buildings and Cascadia Windows & Doors
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Builder Forum Series: Fenestration and Step Code Presented by Township of Langley Green Buildings and Cascadia Windows & Doors Update from Adrian Kanjer, BC Hydro Tuesday, March 23, 2021 9:00 – 11:00 am Music: https://www.bensound.com/
1. TOL Welcome 2. CleanBC Better Homes New Home Construction Program update – AGENDA Adrian Kanjer, BC Hydro 3. New Green Buildings webpages demo 4. Compliance Corner with Ajeen 5. Fenestration and Step Code – Cascadia Windows & Doors 6. Closing – See you in May! • Mentimeter polling throughout the webinar (first poll in about 25 minutes) • Go to menti.com and use the code 8186 1095
January BFS Recap • Ventilation and Step Code • One of the largest contributions to TEDI • Do not over ventilate – size accordingly • Include heat recovery
January BFS Recap • Ventilation and Step Code • One of the largest contributions to TEDI • Do not over ventilate – size accordingly • Include heat recovery
Step Code + Climate Action See prior webinars on our page for education on how to meet Township targets: • Building Envelope Energy Efficiency - How to Avoid Surprises • Airtightness Techniques and Heat Pump Best Practices • Ventilation and Step Code • Windows and Step Code – you are here • Coming – Passive Cooling • Coming – Realtor specific training
Next Builder Forum - Passive Cooling • Learn how to reduce unmet hours – passive • Reduce cooling demand - active • Improve comfort • Reduce operating costs
JANURAY 27 BUILDER FORUM SERIES: Visit tol.ca/gblearn for past event WHAT WE HEARD FROM YOU feedback summaries + more! “Ventilation takes up approx. 40% of TEDI. What percentage of your buildings Therefore if ventilation is designed Level of satisfaction with the webinar: properly, it will help the building meet Somewhat have included an HRV/ERV? Step Code.” Dissatisfied 34% Somewhat 2% 26% “More information regarding SFDs and Satisfied 4% Dissatisfied 14% 14% achieving Step Code compliance. Spent 11% 17% too much time on MFDs and corridor/ common area discussions.” Satisfied 76-100% 51-75% 26-50% 1-25% None 77% Has the webinar increased your Has your ventilation knowledge confidence in building to the Upper “Well spoken presenter who made the increased? Steps of the Step Code? information relatable and not overly technical.” 63% Increased 23% 17% Stayed the greatly same 24% Do owners ask for an HRV/ERV to be 13% included in their buildings? Stayed the Increased a Increased Frequently 10% same bit greatly 60% Increased a Sometimes 35% bit Rarely “The charts illustrating the impact of ventilation 37% and heat recovery in relation to other building Never 18% components was illuminating. Also appreciated a very clear presentation of ideas and solutions.”
CleanBC Better Homes New Construction Program Rebates for Part 9 Residential Builders March 23, 2021 Adrian Kanjer, MS, CEM Project Manager, Residential New Construction Program
Agenda • Program overview • Eligibility criteria • Available rebates • How to apply • Q&A
Program overview • The CleanBC Better Homes New Construction Program provides financial incentives for the construction of new, high-performance residential homes • Will advance CleanBC objectives and help achieve the building sector’s 2030 emission reduction target by supporting ESC adoption and incentivizing builders to use electric space and water heating systems • Developed and funded by the Province of BC, administered by BC Hydro
Program goals • Reduce GHG emissions in BC’s residential new construction sector: • High efficiency electric space and water heating • High performance building envelopes • Increasing the number of 100% electric homes (no fossil fuel connection to house) • Prepare market for higher performance requirements and building codes leading up to 2032 when all new buildings will be required to be “net-zero energy ready” • Communicate the “go electric for homes” message
Rebate Pathways • Applicants may apply for one of two rebate pathways: • Energy Step Code pathway: build a new home that meets a minimum BC Energy Step code level and uses electric space and water heating systems. or • Heat pump pathway: build a new home that uses an electric heat pump for space heating or water heating, regardless of Energy Step Code level. • Add-on rebates • All-Electric Bonus: build a home with no fossil fuel connection whatsoever (e.g. natural gas, propane, oil) and receive an additional $4,000 per home. • Energy Advisor Support Rebate: work with a Program Qualified Energy Advisor and receive an additional $1,000 per home.
Eligibility • Homes must be constructed by a licensed residential builder or an owner builder authorized by BC Housing • Homes must be constructed in compliance with Part 9 of the BC Building Code and, where applicable, the municipally-adopted minimum BC Energy Step Code requirement • Homes must be built in BC Hydro (including New West Electric) service territory • Eligible building types: • Single family detached • Laneway home • Duplex • Triplex • Row or townhome
Eligibility (continued) • An applicant may include a licensed residential builder, owner builder, or Program Qualified Energy Advisor applying on a builder’s behalf. • Builders participating in the Energy Step Code pathway or applying for the Energy Advisor Support Rebate or All-Electric Bonus in the Heat Pump pathway must work with a Program Qualified Energy Advisor • Building permits must be issued on or after April 1, 2020
Heat pump pathway incentives • Build a home that uses an electric heat pump for space heating or water heating Heat pump type Requirements Rebate Energy Advisor All-Electric Support Rebate Bonus (optional) (optional) Air source heat Variable speed mini-split, $3,000 $1,000 per individually $4,000 per pump multi-split, or central ASHP modelled home or unit home or unit (Tier 2 only) • $800 to builder HSPF ≥9.3, SEER ≥16 • $200 to EA Must be on the QPL Air-to-water Must be on the QPL $3,000 hydronic heat pump Combined space & Must be on the QPL $4,000 water heat pump Heat pump water Must be on the QPL $1,000 heater
Energy Step Code pathway incentives • Build a home to Step 3 or higher using electric space and water heating systems ESC Step Rebate Energy Advisor Support All-Electric Bonus Rebate (optional) Step 3 $4,000 $1,000 per individually $4,000 per home or unit modelled home or unit Step 4 $6,000 • $800 to builder • $200 to EA Step 5 $10,000 (or Passive House-certified)
How to apply 1. Carefully review the program website, including the Rebate Eligibility Requirements and Terms and Conditions to confirm your eligibility 2. Fill out and submit the pre-registration form • Within 30 days of submitting this form, BC Hydro will send you an email with the status of your submission 3. Complete your project within 12 months of the date of your pre-approval confirmation email 4. Submit the post-construction application and required supporting documentation 5. Application reviewed and if approved, rebates issued Questions? BC Hydro’s Project Manager, Residential New Construction Program and the CleanBC Energy Coaches are available to support applicants
Supporting documentation Heat pump pathway Heat pump EA Support All-Electric Document rebate rebate Bonus Pre-registration • Energy Advisor Appointment Consent Form (if applicable) Post-construction • Heat pump installation invoice • As-Built BC Energy Compliance Report • EnerGuide (N) Evaluation Homeowner Information Sheet
Supporting documentation Energy Step Code pathway ESC rebate & EA ESC rebate & EA All-Electric Document Support rebate Support rebate Bonus (Step 3-5) (PH) Pre-registration • Energy Advisor Appointment Consent Form (if applicable) Post-construction • As-Built BC Energy Compliance Report • EnerGuide (N) Evaluation Homeowner Information Sheet • Passive House Planning Package
Key Points • Rebates can be topped up with municipal or federal rebates • Projects already on the go could be eligible - Building Permits issued on or after April 1, 2020 • $3,500,000 budget for 2 years - Currently over 30% applied for • Targeting 500 applications
Questions? • Website: www.betterhomesbc.ca/cleanbc-new-construction • All info • Apply here • General inquiries: o betterhomesbc@gov.bc.ca • 1:1 Program support: o Adrian Kanjer, Project Manager, Residential New Construction Program, BC Hydro adrian.kanjer@bchydro.com CleanBC Commercial New Construction Program Website: https://betterbuildingsbc.ca/incentives/cleanbc-commercial-new- construction-program/
3. Green Buildings webpage demo • A Mentimeter question to start off with: • Have you ever visited our TOL Green Buildings webpages? Mentimeter polling throughout the webinar Go to menti.com and use the code 8186 1095
4.Compliance Notes for EAs • Section F – GHG Reporting • HOT2000 (Latest Version) GHG Emissions may not be correct • Refer to EnerGuide Home Owner Information Sheet for correct value or do manual calculations. • Report the Correct GHGI
Energy Advisors – Points to Note Variation in Modelled floor area Checklist for EA • Typically in the range of 10% • Make sure you include all the Conditioned floor area • BCBC 2018 does not specify a limit for Part 9 • Verify against Architectural drawings • Area can vary based on wall thickness • Clarify if major variation between MFA & Density (Number of Units) & Arch drawings are noticed. • Confirm the area takeoffs are correct. For Example Project 1 Project 2 Area as per Architect Drawings 519.1 Sqm 643 Sqm Area as per Compliance Report 414.15 Sqm 491 Sqm Variance 20.2% 23.6% Conclusion Area takeoff is correct. The wall Area takeoff was wrong. They thickness and density caused the issue missed the Rec area in Garage
Energy Modelers – Points to Note For Passively Cooled Buildings • Partial Air Conditioning for Residential Suites – “Not Cool” • If you have Air conditioner – this is actively cooled building. No 200 Overheat hours requirements. Follow requirements for Actively Cooled Buildings. • If you still want to model for Passively Cooled Buildings – Switch off the Air conditioners and perform the simulation.
5. Cascadia Windows and Doors
CASCADIA – EDUCATIONAL PRESENTATION THE FUTURE OF WINDOWS AND THE BC ENERGY STEP CODE Understanding how high-performance windows offer the best bang-for-buck toward compliance
AGENDA AGENDA: WHAT ARE WE LOOKING AT TODAY? • Intro to Cascadia Windows & Doors • Understand the design flexibility offered by an envelope and fenestration-focused design approach • Discover which passive elements of the building envelope have the highest impact on energy efficiency, and how those elements can be targeted for improvement • Understand the objectives of thermally improved window install detailing and some potential pitfalls, using real- life examples • Learn options to cost-optimize new construction and renovation projects based on strategic use of high- performance fenestration products
INTRO TO CASCADIA WINDOWS & DOORS
INTRO TO CASCADIA WINDOWS & DOORS COMMERCIAL & MULTI-FAMILY PASSIVE HOUSE & RESIDENTIAL THERMAL SPACER FOR CLADDING SUPPORT SYSTEMS
INTRO TO CASCADIA WINDOWS & DOORS WINDOW WALLS WINDOWS & DOORS STOREFRONT GLAZING
INTRO TO CASCADIA WINDOWS & DOORS ABOUT THE COMPANY • Manufacturing plant & head office located in Langley, BC • Founded in 2008 PRIMARY MARKETS • BC, Yukon, Washington, Oregon, California COMPANY PURPOSE • To provide simple and cost-effective solutions to stringent energy code requirements
THE PROBLEM WITH BUILDINGS Why are new Building Energy Performance Standards (BEPS) being introduced?
WHAT’S THE PROBLEM?
WHAT’S THE PROBLEM? ENERGY USE EMISSIONS 2% 3% 3% 36% 62% 93% Electricity Natural Gas Other Heating Fuels Electricity Natural Gas Other Heating Fuels
TOWNSHIP OF LANGLEY CLIMATE ACTION STRATEGY
TOWNSHIP OF LANGLEY CLIMATE ACTION STRATEGY
WHAT R THE NUMBERS? 1930s 1980s 2000s ALL THREE BUILDINGS ARE SOMEWHERE BETWEEN R-2 & R-3.5
DICTATING BETTER PERFORMANCE
DICTATING BETTER PERFORMANCE v
ENERGY CONSERVATION IN BUILDINGS REGULATORY CHANGES MUST BE BASED IN REALITY, SO FIRST – YOU HAVE TO HAVE THE TECH THEN – YOU CAN CHANGE THE LAWS TO REQUIRE HIGHER PERFORMANCE NEW TECH ENABLES MORE STRINGENT REGULATIONS
UNDERSTANDING BUILDING ENERGY PERFORMANCE STANDARDS (BEPS) How do programs like the BC Step Code differ from previous performance metrics?
SCOPE OF OUR REVIEW • There are limits to the depth of our review today • I’m not suggesting that you will learn to be an energy modeller in the next 45 minutes • Compliance with energy codes is achieved through multiple measures • But every project starts somewhere • We will explore what is the most efficient starting point to end up with energy code compliance
THIS CODE IS DIFFERENT PREVIOUS ENERGY CODES NOW (BC ENERGY STEP CODE EXAMPLE) SEPARATE ASSEMBLY R-VALUES ONE ENERGY USE LIMIT
BC STEP CODES • Value of knowing future targets for industry participants (manufacturers, builders, architects) • Skip steps! This opportunity is really important • Save money: re-tool or re-train just once or twice; not five times • To be clear, we will be building Net-Zero-Ready construction in 12 years or less, as a built-to-minimum-code building • You might as well get used to the necessary tech and methods before it’s the legal minimum
TARGETING THE WEAKEST LINK Exploring design flexibility offered under BEPS
DESIGN FLEXIBILITY • Flexibility • Responsibility • Start with getting the building enclosure performing well • Everything else is so much easier after that • “Easier” = less cost and more options
IMPACT OF WINDOWS ON BUILDING PERFORMANCE PROJECT EXAMPLE • Mid-rise, MURB • Window-to-wall ratio of roughly 1:2 • Overall building energy performance target of > R-8 Jervis Street Vancouver, BC
RUNNING PERFORMANCE NUMBERS
DESIGN FLEXIBILITY • Exterior insulation – yes or no? • Mechanical system size; type • A bigger home? • Glazing area – more?
GLAZING AREA - MORE ALUMINUM WINDOW WALL 40% WINDOW-TO-WALL RATIO WHAT DOES INCREASED TEDI - 35 kWh/m2 TEUI - 111 kWh/m2 GLAZING AREA LOOK LIKE?
GLAZING AREA - MORE ALUMINUM WINDOW WALL FIBERGLASS WINDOW WALL 40% WINDOW-TO-WALL RATIO 40% WINDOW-TO-WALL RATIO TEDI - 35 kWh/m2 TEDI - 30 kWh/m2 TEUI - 111 kWh/m2 TEUI - 106 kWh/m2
GLAZING AREA - MORE ALUMINUM WINDOW WALL FIBERGLASS WINDOW WALL 40% WINDOW-TO-WALL RATIO 45% WINDOW-TO-WALL RATIO TEDI - 35 kWh/m2 TEDI - 30 kWh/m2 TEUI - 111 kWh/m2 TEUI - 107 kWh/m2
GLAZING AREA - MORE ALUMINUM WINDOW WALL FIBERGLASS WINDOW WALL 40% WINDOW-TO-WALL RATIO 50% WINDOW-TO-WALL RATIO TEDI - 35 kWh/m2 TEDI - 30 kWh/m2 TEUI - 111 kWh/m2 TEUI - 107 kWh/m2
GLAZING AREA - MORE ALUMINUM WINDOW WALL FIBERGLASS WINDOW WALL 40% WINDOW-TO-WALL RATIO 55% WINDOW-TO-WALL RATIO TEDI - 35 kWh/m2 TEDI - 30 kWh/m2 TEUI - 111 kWh/m2 TEUI – 107 kWh/m2
GLAZING AREA - MORE ALUMINUM WINDOW WALL FIBERGLASS WINDOW WALL 40% WINDOW-TO-WALL RATIO 60% WINDOW-TO-WALL RATIO TEDI - 35 kWh/m2 TEDI - 30 kWh/m2 TEUI - 111 kWh/m2 TEUI - 108 kWh/m2
GLAZING AREA - MORE ALUMINUM WINDOW WALL FIBERGLASS WINDOW WALL 40% WINDOW-TO-WALL RATIO 65% WINDOW-TO-WALL RATIO TEDI - 35 kWh/m2 TEDI - 30 kWh/m2 TEUI - 111 kWh/m2 TEUI - 109 kWh/m2
GLAZING AREA - MORE ALUMINUM WINDOW WALL FIBERGLASS WINDOW WALL 40% WINDOW-TO-WALL RATIO TEDI - 36 kWh/m2 TEUI - 125 kWh/m2 40% WINDOW-TO-WALL RATIO TEDI - 32 kWh/m2 TEUI - 121 kWh/m2
GLAZING AREA - MORE ALUMINUM WINDOW WALL FIBERGLASS WINDOW WALL 40% WINDOW-TO-WALL RATIO TEDI - 36 kWh/m2 TEUI - 125 kWh/m2 45% WINDOW-TO-WALL RATIO TEDI - 32 kWh/m2 TEUI - 122 kWh/m2
GLAZING AREA - MORE ALUMINUM WINDOW WALL FIBERGLASS WINDOW WALL 40% WINDOW-TO-WALL RATIO TEDI - 36 kWh/m2 TEUI - 125 kWh/m2 50% WINDOW-TO-WALL RATIO TEDI - 32 kWh/m2 TEUI - 124 kWh/m2
GLAZING AREA - MORE ALUMINUM WINDOW WALL FIBERGLASS WINDOW WALL 40% WINDOW-TO-WALL RATIO TEDI - 36 kWh/m2 TEUI - 125 kWh/m2 55% WINDOW-TO-WALL RATIO TEDI - 32 kWh/m2 TEUI - 125 kWh/m2
OPTIMIZING THE WINDOW IN THE ENVELOPE Mitigating weaknesses and leveraging strengths in the building envelope design
AIR LEAKAGE – FAST FACTS • Windows and doors that swing shut commonly work better than ones that slide • Gaskets that compress offer better air seals than gaskets the slide • Think of a hatch on a boat • Sash designs and door sills that have compression seals and a ‘step’, perform better This is something to watch for GOVERNMENT OF CANADA
WHY AIR LEAKAGE MATTERS • Air leakage is a measurement of the entire building envelope—including the window details and the window’s seals • It impacts air exchanges of the building (key measurement of BC Step Code) • Air leakage at and around windows and doors is getting more scrutiny because they involve more pieces and moving parts NOPPHALUX KOSAKORN PAUL MENZ
SHADING – FAST FACTS BUILDING • Building form • Things surrounding the building • Placement of the building & windows
SHADING – FAST FACTS EXTERIOR SHADING • Exterior shading devices control heat gain, provide privacy & reduce glare SUMMER SUN WINTER SUN
SHADING – FAST FACTS GLASS • Heat gain can be controlled by Low-E coatings on the glass surface JELD-WEN
SHADING – FAST FACTS INTERIOR SHADING • Interior shading devices provide privacy & reduce glare NEW YORK MAGAZINE
SHADING – FAST FACTS EXTERIOR INTERIOR OVERHANGS LOW-E ON GLASS SHADING SHADING PRIVACY GLARE SOMEWHAT SOMEWHAT HEAT GAIN MOSTLY
WINDOW PLACEMENT IN THE WALL KEN SOBLE TOWER – HAMILTON, ON
WINDOW PLACEMENT IN THE WALL Inside 20OC Outside -10OC 0.187 W/mK Are you crazy!
WINDOW PLACEMENT IN THE WALL Inside 20OC Outside -10OC 0.01 W/mK That’s much better! Schematic
ISSUES WITH POSITIONING WINDOWS
ISSUES LIKE… GRAVITY VS.
ISSUES LIKE… GRAVITY VS.
THE IMPORTANCE OF PERFORMANCE Selecting the most effective window for your project
TYPICAL WINDOW FRAMES WOOD FRAME VINYL / UPVC FIBERGLASS ALUMINUM PHOTO CREDIT: NEUFFER WINDOWS PHOTO CREDIT: EUROLINE WINDOWS PHOTO CREDIT: CASCADIA WINDOWS & DOORS PHOTO CREDIT: GLO EUROPEAN WINDOWS
TYPICAL APPLICATIONS ALL CAN REACH HIGH-PERFORMANCE BASED ON CLEVER PRODUCT DESIGN
TYPICAL APPLICATIONS WOOD FRAME VINYL / UPVC FIBERGLASS ALUMINUM RESIDENTIAL MULTI-FAMILY RESIDENTIAL MULTI-FAMILY RESIDENTIAL COMMERCIAL MULTI-FAMILY COMMERCIAL HIGH-RISE HIGH-RISE PHOTO CREDIT: NEUFFER WINDOWS PHOTO CREDIT: EUROLINE WINDOWS PHOTO CREDIT: CASCADIA WINDOWS & DOORS PHOTO CREDIT: GLO EUROPEAN WINDOWS
TYPICAL APPLICATIONS WOOD FRAME VINYL / UPVC FIBERGLASS ALUMINUM RESIDENTIAL MULTI-FAMILY MULTI-FAMILY COMMERCIAL COMMERCIAL HIGH-RISE HIGH-RISE PHOTO CREDIT: NEUFFER WINDOWS PHOTO CREDIT: EUROLINE WINDOWS PHOTO CREDIT: CASCADIA WINDOWS & DOORS PHOTO CREDIT: GLO EUROPEAN WINDOWS
A HISTORY OF WINDOW PERFORMANCE FIBERGLASS FRAME 1970s 1980s 1990s 2000s 2010s 2020s LOW-E (soft coat) LOW-E (soft coat) +57% +36% +20% +22% AIR AIR ARGON +172% ARGON ARGON R-0.7 R-1.1 R-1.5 R-1.8 R-2.2 R-7.1
THERMAL PERFORMANCE
THERMAL PERFORMANCE Typical Thermally Broken Aluminum Frame Typical Fiberglass Frame 85% IMPROVEMENT REDUCED HEAT LOSS THROUGH WINDOWS Standard IGU: Standard IGU: • Low-E • Low-E FABRICATORS USING ACTUAL NFRC CERTIFIED U-VALUES FROM WINDOW • Argon fill • Argon fill • Stainless steel spacers • Stainless steel spacers R VALUE: 2.0 R VALUE: 3.7
THERMAL PERFORMANCE Typical Thermally Broken Aluminum Frame Typical Fiberglass Frame CASCADIA EXAMPLES R-4.1 R-7.1 Standard IGU: Double Glazing Triple IGU: Standard Glazing • Low-E • Low-E OVER 100% IMPROVEMENT • Argon fill • Stainless steel spacers OVER 250% IMPROVEMENT • Argon fill • Stainless steel spacers R VALUE: 2.0 R VALUE: 3.7
THERMAL PERFORMANCE 30-50% of a building’s heating & cooling energy is lost through windows BY IMPROVING THE FRAME, YOU IMPROVE THE 20-30% of a typical window areas is OVERALL PERFORMANCE OF THE represented by the window frame ENTIRE WINDOW Broeckx-Smith, S., Suh, S., 2019
KEY TAKE-AWAYS BC Energy Step Code involves a whole building approach: one energy use limit. The passive elements of the building enclosure offer the most significant opportunity for compliance. Improve the weakest R-value components to make the biggest whole-building gain. • Enjoy the favorable cost trade-offs that result
QUESTIONS
6. Credits • BC Housing CPD - We will send you the proof of attendance. Your registration/sign-in today acts as your proof • AIBC - No work on your part! • BOABC – you submit • Attendance is tracked – One credit per hour • Sarah will send the attendee list to AIBC and they will give you your LUs
Acknowledgements • Michael Bousfield, Cascadia Windows & Doors • BC Hydro • YOU! Greenbuildings@tol.ca Thank you
tol.ca/greenbuildings
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