2026 attic insulation price table (GTA)
| Service | What's included | Price |
|---|---|---|
| Top-up to R-50 | Blown cellulose or fiberglass over existing insulation to ~14 in settled, baffles at eaves, hatch insulation | $1.20–$1.75 / sq ft |
| Full install (new or gutted attic) | Full-depth blown insulation, air sealing of top plates, pipes and wires, baffles, hatch cover | Quoted per job |
| Insulation removal | Vacuum removal of old, wet or damaged insulation before re-install | +$1–$2 / sq ft |
| Add-ons | Extra baffles, insulated hatch cover and weatherstripping, hatch air sealing | Itemized |
| Free attic inspection | Depth measurement, ventilation check, moisture and mold check, photos, written quote | $0 |
What changes the price of your attic
- Attic size. Priced per square foot of attic floor.
- How much insulation you already have. A thin attic needs more material to reach R-50.
- Removal. Wet, mouldy or pest-damaged insulation has to come out first (+$1–$2 per sq ft).
- Access. Small hatches, low eaves and knee walls take longer.
- Number of eave bays and air leaks. Each baffle and sealing point is listed on your quote.
Every attic is different, which is why your firm price comes from a free inspection, not a guess. It takes 30–45 minutes and your written quote arrives within 24 hours.
What's included in every quote
- 1-year labour warranty
- Before-and-after photos with a depth ruler in frame
- Attic information card stapled at the hatch
- Full cleanup, drop sheets and shoe covers indoors
- Quote valid for 30 days
- Payment on completion. No deposit.
Why our price is itemized
A lump-sum quote hides what you're paying for. When baffles, air sealing and the hatch each have their own line, you can compare scope between contractors instead of comparing totals, and you can check every promised item in the after photos.
Rebates
Ontario's Home Renovation Savings Program has offered up to $1,250 for standalone attic insulation through participating contractors, and it is currently scheduled to end November 30, 2026. Read our honest rebate guide to see what applies to your home.
Attic insulation cost FAQ
What is the average cost of attic insulation in Toronto?
Blown-in attic insulation runs $1.20–$1.75 per sq ft installed in the GTA. The total for your home depends on attic size, target depth, access, and whether removal is needed. Use our instant estimate for your attic, then book a free inspection for a firm price.
Is blown-in insulation cheaper than batts?
For an existing attic, yes in most cases. Blown-in cellulose or fiberglass fills around wires, truss webs and irregular joist spacing in one pass and is faster to install than cutting batts, so labour is lower and coverage is more complete.
What makes an attic insulation quote go up?
Larger area, deeper target R-value, removal of old or contaminated insulation (+$1–$2/sq ft), tight access, low roof pitch at the eaves, and many penetrations to air seal.
Do you charge HST?
Prices on this site are before HST. Your written quote shows HST as its own line.
Can I lower the price?
Yes, by removing a line item rather than cutting quality. For example, you can skip the hatch cover if yours is already insulated. We never cut the baffles, because they protect your roof.