Ontario insulation pricing
Insulation Renovation Cost in Ontario
Planning attic, basement, wall, blown-in, or spray foam insulation? Use these Ontario cost ranges to budget the job, then compare local insulation contractors before you hire.
Typical Insulation Renovation Costs
| Project | Typical Range | Unit |
|---|---|---|
| Attic insulation top-up | $1,500 to $6,000 | average home attic |
| Batt insulation | $1 to $3 | per sq ft |
| Spray foam insulation | $3 to $8 | per sq ft |
| Blown-in insulation | $1,500 to $4,500 | full attic |
| Basement wall insulation | $1,500 to $5,000 | full basement |
Prices are in Canadian dollars and reflect typical Ontario contractor quote ranges. Final pricing depends on site conditions, material choice, removal, access, and project scope.
What Changes the Price?
- 1The area being insulated: attic, walls, basement, crawlspace, or full renovation envelope.
- 2The insulation type: batt, blown-in, spray foam, rigid board, or a combination.
- 3Current R-value, target R-value, and whether air sealing or vapour barrier work is included.
- 4Removal needs, especially damaged insulation, mould, vermiculite, or suspected asbestos.
- 5Access, cleanup, and whether the job is bundled with drywall, basement, or roofing work.
Before You Hire
Ask each contractor to specify the insulation type, target R-value, air sealing scope, removal plan, cleanup, warranty, liability insurance, and WSIB coverage.
If the project involves spray polyurethane foam, ask who is applying it and what training or certification applies to that crew.
For finished basements or walls, confirm whether drywall repair, vapour barrier, and trim work are included or quoted separately.
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Insulation Renovation Cost FAQ
- How much does insulation renovation cost in Ontario?
- Small batt insulation work can start around $1 to $3 per square foot, while full attic or basement projects often land between $1,500 and $6,000 depending on scope, access, and material.
- What is the cheapest insulation upgrade?
- For many Ontario homes, blown-in attic top-up is the most cost-effective upgrade because heat loss through the attic is common and the work is usually less invasive than opening finished walls.
- Should I get more than one insulation quote?
- Yes. Get at least three written quotes and compare R-value, air sealing, removal, cleanup, warranty, and whether the contractor carries liability insurance and WSIB coverage.