Insulation Services

Batt insulation costs $1.50–$3.50 per square foot installed. Spray foam insulation costs $2.50–$5.00 per square foot for open-cell and $4.00–$8.00 per square foot for closed-cell. The right choice depends on the application — spray foam provides higher R-value per inch and acts as an air barrier, while batt is more cost-effective for standard wall cavities.

Ontario Building Code (SB-12, Climate Zone 6) requires minimum R-60 for attics, R-31 for flat roofs, R-22 for above-grade exterior walls, and R-20 for basement walls. These are minimum values — exceeding them improves energy efficiency and can reduce heating costs by 20–30% in Toronto winters.

Closed-cell spray foam (2-lb density) provides R-6.5 to R-7.0 per inch, acts as its own vapour barrier, and adds structural rigidity. Open-cell spray foam (0.5-lb density) provides R-3.5 to R-4.0 per inch, offers superior sound dampening, and costs less but requires a separate vapour retarder. Closed-cell is ideal for basements and exterior walls; open-cell works well for interior partitions and attics.

Most residential insulation projects take 1–3 days per floor. A full-home spray foam job (walls + attic) typically takes 2–3 days. Batt insulation is faster — a full floor can be completed in 1 day. We schedule around other trades to avoid delays in your construction timeline.

In some cases, yes. Blown-in insulation (cellulose or fibreglass) can be injected into existing wall cavities through small holes that are patched afterward. For attics, blown-in insulation is added on top of existing material. However, for spray foam or full batt replacement, drywall removal is usually required to access the cavities.