01Trade cost
Insulation and air sealing cost in Canada
Thermal insulation, air and vapour barriers and acoustic batts. Energy code minimums have made this a growing share of envelope cost rather than an afterthought.
02The rate
Commercial hourly
$65 – $110
Billed rate, national band
General hourly
$55 – $95
House-scale work
Commercial $/sf
$6 – $10
3% of hard cost
General $/sf
$8 – $13
From the residential band
The cost per square foot above is not a separate dataset. It is 3% of the curated new-build hard-cost band and 2% of the curated fit-out band that the market pages already publish, so this page can never contradict them.
03General versus commercial
The two segments, side by side
| Segment | Hourly | New build $/sf | Fit-out $/sf |
|---|---|---|---|
| General / residential | $55 – $95 | $8 – $13 | $6 – $9 |
| Commercial | $65 – $110 | $6 – $10 | $2 – $4 |
Why commercial insulation and air sealing bills higher
Commercial work is specified as a continuous air-barrier assembly, often third-party inspected and tested for leakage. Residential insulation is batt or spray to a prescriptive R-value.
What the quoted rate covers
Normally: Thermal insulation to specified R-value; Air and vapour barrier membranes and tapes; Acoustic batts where scoped. Normally not: Air-barrier testing and thermographic inspection; Firestopping at penetrations; Remediation of an existing failed assembly; Spray foam where batt is priced.
Buildlor facts
- Insulation and air sealing is 3% of hard cost on a new build.
- Insulation and air sealing is 2% of hard cost on a fit-out.
- Hard cost is typically 60 to 75 percent of an all-in budget, so a trade's share of the total is smaller again.
04What moves the number
Cost drivers
- Energy code step: each tier of the code raises effective R-value and therefore assembly thickness and detail.
- Continuity: thermal breaks at slab edges and parapets are detail work, and detail work is labour.
- Spray foam versus batt is a two-to-three times material difference for the same nominal value.
- Acoustic separation between tenancies is often the real driver, not thermal performance.
05By market
Insulation and air sealing cost by city
Every market below carries a curated cost factor, so the trade rate moves with it. Markets we publish a dedicated page for are linked.
| Market | Commercial $/sf | General $/sf |
|---|---|---|
| Toronto, ON | $7 – $11 | $9 – $14 |
| Montreal, QC | $6 – $10 | $8 – $12 |
| Calgary, AB | $6 – $10 | $8 – $13 |
| Ottawa, ON | $7 – $10 | $8 – $13 |
| Edmonton, AB | $6 – $10 | $8 – $12 |
| Winnipeg, MB | $6 – $9 | $8 – $12 |
| Mississauga, ON | $7 – $11 | $9 – $14 |
| Vancouver, BC | $7 – $11 | $9 – $14 |
06Questions
How much does insulation and air sealing cost per hour?
Insulation and air sealing is billed in a band, not at one rate. Commercial work bills above general work for the same hour because of documentation, inspection and coordination. The bands on this page are national baselines; the market table shows how they move by city.
Why is commercial insulation and air sealing more expensive than residential?
Commercial work is specified as a continuous air-barrier assembly, often third-party inspected and tested for leakage. Residential insulation is batt or spray to a prescriptive R-value.
What share of a construction budget is insulation and air sealing?
3% of hard cost on a new build and 2% of a fit-out, on the division splits Buildlor publishes. Those shares are how the cost per square foot on this page is derived.
Is this a quote?
No. Buildlor is a data publisher, not a contractor. These are indicative benchmarks for the stage before you tender, and every page states what it excludes.
Buildlor Construction Cost Index · Last updated 2026-01-15 · Maintained by Buildlor Cost Desk
Not advice — Buildlor is a data publisher. We do not bid, price, estimate, or build work, and nothing here is a quote, a tender price, or construction advice. Figures are indicative order-of-magnitude benchmarks for early budgeting and must be confirmed by a qualified cost consultant, quantity surveyor, or general contractor before you rely on them. About Buildlor