Home energy upgrade
Insulation and Building Envelope
Insulating the roof, walls and basement together with air sealing cuts heat loss — the most cost-effective step to lower your bill, eligible for Rénoclimat.
Step by step
How Insulation and Building Envelope installation works
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A Rénoclimat advisor carries out an energy evaluation BEFORE the work and provides a report with the recommended measures.
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You choose a contractor and have the insulation and air-sealing work done.
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A second energy evaluation confirms the improvements once the work is complete.
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The Rénoclimat financial assistance is paid according to the measures completed and the gains observed.
Why it's worth it
Benefits of Insulation and Building Envelope
- Rénoclimat assistance — up to CA$1,500 for roof insulation and up to CA$3,750 for walls
- Air sealing is also subsidised by Rénoclimat
- The most cost-effective first step to cut your heating bill
- Improves comfort by eliminating draughts and cold spots
- Improves the home's energy rating, which can unlock other assistance
- A Rénoclimat energy evaluation is required BEFORE the work begins
What to budget
Typical cost
Attic insulation: often CA$1,500–CA$4,000. Wall or basement insulation: varies by method. Rénoclimat reimburses part of the eligible work.
Costs vary significantly depending on property size, existing systems, and installer. A surveyor's assessment will give you an accurate figure. Available grants (listed below) can substantially reduce the net cost.
Is this right for you?
Ideal for
- Homes built before current insulation standards
- Properties with an under-insulated attic, walls or basement
- Any owner wanting to cut their winter heating bill
- Projects combining insulation (Rénoclimat) and a heat pump (LogisVert)
Financial support
Grants you may qualify for
View all Québec energy grants →Ready to go?
Find licensed home insulation installers near you
Compare RBQ-licensed specialists in your area, check their credentials, and book a free assessment worth 380 $.
