What Home Renovation Savings pays for insulation in Windsor
We re-read the program's pages and both eligibility documents on October 3, 2026. There are two ways in: an attic-only stream with no assessment, and the assessment stream, where insulation, windows, air sealing and a heat pump water heater are bundled.
Attic, no assessment
The attic stream pays half of the after-tax cost, up to $1,250 for an attic from R-12 or less to R-50, $1,000 from R-25 or less and $800 from R-35 or less. A participating insulation contractor must do the work.
Attic, with assessment
In the assessment stream an attic brought to at least R-50 pays $1,500, $1,200 or $900 by starting R-value, pro-rated by the share of the roof you insulate (minimum 50%).
Cathedral ceiling or flat roof
$750 in the attic stream and $780 in the assessment stream. Any combination of attic, cathedral and flat roof counts as one measure, capped at $1,500 in the assessment stream.
Exterior walls
$1,200 for R-7.5 to R-12 added, $2,100 for more than R-12 to R-20 and $3,600 for more than R-20. Minimum 20% of wall area, pro-rated.
Basement walls, slab and headers
Walls up to $1,500, a slab $500 and a header $300. Wall plus slab is capped at $2,000, and all three at $2,300.
Crawl space and exposed floors
Crawl space walls $600 or $1,200, ceiling $1,200, header $300, combined up to $2,700. An exposed floor over a garage earns $300 at R-20 or more.
Semis and row homes
Semi-detached and end-unit row homes get 75% of the walls and basement maximums. Middle-unit rows get 50%.
Audit rebate and cap
The assessment stream returns $600 for the audits and caps insulation rebates at $7,700, inside an overall $10,000 limit, or $5,000 for Enbridge gas homes.
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Read everything we know so far Official page: canada.ca
Attic stream work must be finished by November 30, 2026 and entered in the system by December 31. In the assessment stream, the post-audit must be scheduled by November 30 and completed by December 31, 2026, or within 180 days of your first assessment.
Old houses, repairs and order of work
7.2% of Windsor households report a home needing major repairs, one of the higher rates in our data. 60% live in detached houses, 72% in an eligible house type and 63% own. If the roof or walls need work, plan insulation around it, and book the first assessment before contractors start, because earlier work does not qualify.
Exterior walls: the biggest amount
Exterior wall insulation pays up to $3,600 when you add more than R-20, up to $2,100 for more than R-12 to R-20, and up to $1,200 for R-7.5 to R-12, with at least 20% of the wall area covered. Foundation walls are excluded. The rebate is pro-rated by area, so a 60% job at the top tier pays $2,160.
Heating fuel and the cap
The overall limit is $10,000 for homes heated by electricity, oil, propane or wood and $5,000 for Enbridge gas homes. The fuel is judged at the audits. A Windsor house on gas can still claim insulation, but a $7,700 insulation total could not fit inside a $5,000 cap.
Low-income help
The Energy Affordability Program from Save on Energy offers free upgrades to income-qualified households, which can include insulation and draft proofing. Ask about it before paying for an assessment.
How to claim in Windsor
- Book the first assessment before any contractor starts.
- Choose a stream: pre-register for the attic stream, or book a home energy assessment for the full bundle.
- Get quotes that state the R-value you start with, the R-value you reach and the share of each surface you will insulate.
- Do not start any work until the in-home visit or first assessment has happened.
- Keep invoices and your property tax bill for the paperwork, and finish before the November 30 and December 31, 2026 dates.
Common questions
Is Windsor's housing older than Toronto's?
Yes: 68% of Windsor households live in homes built before 1981, against 58% in Toronto.
What do exterior walls pay?
Up to $3,600 for more than R-20 added.
What if my house is on gas?
The overall cap is $5,000.
Is there free help?
The Energy Affordability Program, for income-qualified households.
What to do next
See Windsor window and door rebates and the Ontario rebate calculator.
By Sam Menard. Sources, last read October 3, 2026: Home Renovation Savings: assessment upgrades, Home Renovation Savings: attic insulation, Home Renovation Savings eligibility requirements (PDF), Attic stream requirements (PDF), Statistics Canada 2021 Census, table 98-10-0233-01. All Windsor rebates → Every Home Renovation Savings rebate →
