Quick answer: Whether your Mississauga home is a 1950s bungalow in Applewood or a 1980s two-storey in Erin Mills, the attic is often the simplest upgrade you can make. Reaching at least R-50 can qualify for a rebate of up to $1,250 through the Home Renovation Savings Program, with no energy assessment needed. Pro Home Insulation measures your attic and tells you which rebate tier you likely fit.
Updated November 2026
On this page
- Six reasons Mississauga homeowners are topping up their attics now
- How to estimate your attic’s R-value
- What a Mississauga attic rebate could look like
- Numbers from trusted sources
- Which material for which part of the attic?
- How a Mississauga attic project runs
- Quick eligibility checklist
- Example project (illustrative)
- Neighbourhoods we serve in Mississauga
- Rebate tier quick-finder
- Frequently asked questions
- Get a free attic assessment
Six reasons Mississauga homeowners are topping up their attics now
- The rebate is time-limited. The program is currently scheduled to run until March 31, 2027, and it is first-come, first-served.
- Older homes were built to lower levels. Post-war homes in Mineola, Applewood and Cooksville were insulated well below today’s R-60 target for new homes.
- Suburban homes from the 1970s and 1980s are due. Original insulation in many Meadowvale and Erin Mills homes has settled for decades.
- Newer homes may still fall short. Even a 2000s home in Churchill Meadows or Lisgar can sit below R-50, which may still qualify for the $800 tier.
- Ice dams and frost. Air leaking into the attic causes winter frost on roof boards and ice at the eaves.
- Comfort upstairs. Second-floor bedrooms under a thin attic often run hotter in summer and colder in winter.
How to estimate your attic’s R-value
Answer first: measure the depth and multiply by the R-value per inch for your insulation type.
- Blown fiberglass: about R-2.5–3 per inch. 12 inches is roughly R-30–36.
- Blown cellulose: about R-3.5 per inch. 10 inches is roughly R-35.
- If you see batts, measure the batt thickness and look for a printed label.
Our step-by-step guide on how to check attic insulation R-value shows where to measure.
What a Mississauga attic rebate could look like
This table shows the rebate at the same after-tax job cost of $2,200 across the standalone attic tiers. The rebate is 50% of the after-tax cost, up to the cap. Amounts can change; see current rebates.
| Starting attic | Target | 50% of $2,200 | Tier cap | Rebate |
|---|---|---|---|---|
| R-12 or less | R-50 | $1,100 | $1,250 | $1,100 |
| Above R-12 to R-25 | R-50 | $1,100 | $1,000 | $1,000 |
| Above R-25 to R-35 | R-50 | $1,100 | $800 | $800 |
For the full rules, see our Ontario attic insulation rebate guide.
Numbers from trusted sources
- Air leakage is about 20–30% of heat lost from an older home (Natural Resources Canada).
- NRCan estimates air-leakage heat loss costs about $280 a year on natural gas for a home built 2000 or later (Natural Resources Canada).
- The Ontario Building Code (SB-12) targets about R-60 for attic ceilings in new homes in most of Ontario (Ontario Building Code).
- The Home Renovation Savings Program launched January 28, 2025, and is run by Enbridge Gas and Save on Energy (Home Renovation Savings Program).
Which material for which part of the attic?
| Attic area | Common choice | Why |
|---|---|---|
| Open attic floor | Blown cellulose or fiberglass | Fills around framing and reaches R-50 quickly |
| Attic over the garage | Blown insulation plus air sealing | Garage ceilings often leak air and fumes |
| Knee walls in a 1.5-storey | Spray foam or dense-pack | Vertical, tight spaces |
| Cathedral or vaulted ceiling | Dense-pack or spray foam | Little or no attic space above |
| Hatch cover | Rigid board and weatherstripping | Small spot, big air leak |
Read the detail in cellulose vs fiberglass vs spray foam.
How a Mississauga attic project runs
- Free assessment. We measure depth, check venting and look for moisture or animal damage.
- Clear quote. You see the target R-value, the price and the likely rebate tier.
- Air sealing. We seal leaks with air sealing before insulating.
- Install. We add baffles and blow in attic insulation to at least R-50.
- Rebate paperwork. We provide what you need to file. Cheques typically arrive within a few months of approval.
Quick eligibility checklist
- I own the home
- I heat with Enbridge gas, electricity, oil, propane or wood
- My home is detached, semi-detached, a townhouse or another eligible type
- My attic has not already received an Enbridge, Save on Energy or HRS attic rebate
- The work will be done by a participating contractor
Example project (illustrative)
example — not a specific customer.
A 1980s two-storey detached home in Erin Mills has about R-32 in the attic. It is air sealed and topped up to R-60.
- After-tax insulation cost: $2,200
- 50% of cost: $2,200 × 0.5 = $1,100
- Tier cap (above R-25 to R-35): $800
- Rebate: $800 (capped)
- Net cost: $2,200 − $800 = $1,400
Heat flow through the insulation layer (simplified) drops by about 47% (1 − 32/60).
Neighbourhoods we serve in Mississauga
We serve all of Mississauga, including Port Credit, Mineola, Lorne Park, Clarkson, Applewood, Cooksville, Erindale, Streetsville, Malton, Meadowvale, Erin Mills, Churchill Meadows and Lisgar. Nearby, we also work in Etobicoke, Oakville and Brampton.
Rebate tier quick-finder
Use your measured R-value to find your likely tier.
- Is the ceiling sloped with no attic above? Yes: you are in a cathedral or flat-roof tier (up to $750 or $650).
- Is the attic R-12 or less? Yes: up to $1,250 when you reach R-50.
- Is it above R-12 up to R-25? Yes: up to $1,000.
- Is it above R-25 up to R-35? Yes: up to $800.
- Is it above R-35? The standalone attic path does not list a tier, so ask about the bundle path or other upgrades.
Frequently asked questions
My Mississauga home was built in the 2000s. Is it worth topping up?
It can be. If your attic is above R-25 but at or below R-35, topping up to R-50 can qualify for up to $800. Measure first so you know where you stand.
Do I need to remove my old insulation?
Not usually. If it is dry and clean, new insulation goes on top. Wet, mouldy or animal-soiled insulation should come out first through insulation removal.
Can I get the attic rebate and an energy assessment rebate?
Not for the attic on both. The bundle path pays $600 for the assessment and up to $1,500 for the attic, but it needs two or more upgrades. You cannot claim the attic on both paths.
What happens to my attic venting?
We install baffles at the eaves so soffit vents stay open. Good venting and air sealing together help prevent frost and moisture.
How soon can the work be done?
It depends on the season and how busy we are. Call us for current timing, and remember the program is first-come, first-served.
Get a free attic assessment
Pro Home Insulation works in every corner of Mississauga. We will measure your attic, confirm your likely rebate tier and give you a clear quote. Call (647) 250-0606 or Book online.