1 vbbl and improved envelopes 1&2 family homes in vancouver 2014 vbbl new + existing homes chris...
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VBBL and improved envelopes 1&2 Family Homes in Vancouver
2014 VBBL New + Existing Homes
Chris Higgins
City of Vancouver
Todays Focus
• New energy requirements existing homes
• New energy requirements new homes (the focus)
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What does this presentation apply to?
• Applies to: • Single Family (w or w/o suite and lane)• Duplex/ semi attached (w or w/o suites)
• Does not apply to:• 3+ townhouse developments• Multi family (apartments or condo) 3+ units
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Why focus on 1 & 2 family homes?
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2,652,000
245,000134,000270,000
475,000
900,000
1,260,000
New Home Total Square Footage
Single FamilyLanewayDuplexRowhouseLow Rise (mixed use)High Rise (mixed use)High Rise Apartment
Why Focus on 1 & 2 family homes?
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• Council Goal: Lead the world in green building design and construction
• Council Direction: achieve carbon neutral new construction by 2020
• Staff Work Plan: Build capacity to deliver great envelopes for homes that use less energy for space and hot water heat
Carbon Neutral New Construction by 2020
100% Renewable Energy by 2050
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Future VBBL Direction
2014
Bu
ildin
g E
ne
rgy
Use
20202016 2018YEAR VBBL COMES INTO EFFECT
2014 VBBL15% less energy than 2008
2016 VBBL30% less energy than 2008
2018 VBBL40% less energy
2020 VBBL 50% less energy
2008 VBBL
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VBBL Energy Updates – Keep it simple
• Complexity rarely performs over time
• Buildings should aspire to be like a pencil not like a space pen.
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One and Two Family Dwellings
Permit $ Requirement$5,000+ EnerGuide Audit$25,000+ Air Sealing$50,000+ Attic Insulation
Existing Homes: Green Renovation Bylaw
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New Home Process
New Home Certified Energy Advisor History
History:• “Certified Energy Advisors” have worked
with almost every 1&2 family home since 2009 in Vancouver, well over 3000 homes submitted reports
• Role was to create an energy model and blower door test(BDT) the home
• Model and BDT submitted to the city
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Pre Building Permit Requirements* Pre Permit Form
Insulation Verification* Pre Permit Form
Prior to Final Inspection (no change)Submit final EnerGuide Report
*Orange items are new requirements
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Expanded CEA Role Requirements
Certified Energy Advisor Role
New VBBL:• Certified Energy Advisors will continue to
work with every 1&2 family home• Role will continue to create an energy
model and blower door test(BDT) the home • Role will now visually verify that the plans
and energy model meets or exceeds VBBL• Role will now complete a pre drywall visual
verification that plans and model are correct
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New Home Prescriptive Requirements
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New Home Energy Requirements in VBBL
Measure 2014 VBBL
Windows and Sliding Glass Doors
USI-Value of 1.4 W/(Km2)
SkylightsUSI-Value of 2.4 W/(Km2)
Wall InsulationRSI 3.85 (R22) Effective
Under Slab Insulation RSI 2.1 (R12) Nom…
Attic Insulation (traditional attic)
RSI 8.8 (R50) Nom..
Air Tightness ACH 3.5 or ELA and actions
Measure 2014 VBBL
Domestic Hot water (DHW)
Minimum 78% efficient
Domestic Hot Water (Electric)
RSI 1.75 Tank Wrap
Hot Water Pipe WrapPipe Insulation 3M output, 1M input or all if recirculating
Heating furnace or boiler
Minimum 92% AFUE No side-yard venting
Gas fireplacesIntermittent pilot ignition (IPI) systems must be direct vent
Wood Burning Appliances (labels showing)
Max 2.5 grams/hour – catalyticMax 4.5 grams/hour – non catalytic
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• The City will provide a FSR “Bonus” for the thicker walls so interior volume is not sacrificed [This is available to any house with wall R values that exceed R22 effective].
• In the RS-1 zone you can build a taller house and a deeper house to account for thicker walls, thicker under slab insulation and thicker attic insulation.
Removing Barriers
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Review R22 Guide
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Thank You
Chris Higgins LEED A.P Green Building Planner
City of [email protected]
More information on the residential low rise energy page: http://vancouver.ca/home-property-development/energy-efficiency-requirements-and-resources-for-new-homes.aspx
Questions?