Complete Insulation Cost Breakdown by Type
The table below covers all major insulation materials and applications for Smiths Falls and Renfrew County homes. Prices are per unit of measurement as noted.
| Insulation Type / Application | Price Range (CAD) | Basis / Notes |
|---|---|---|
| Blown-in attic insulation (cellulose) | $1.50 – $2.50 / sq ft | To R-60 depth; includes basic baffle installation |
| Blown-in attic insulation (fibreglass) | $2.00 – $3.50 / sq ft | To R-60 depth; more expensive than cellulose |
| Batt insulation — attic | $1.00 – $2.00 / sq ft | Material only; labour extra if contractor installed |
| Closed-cell spray foam | $4.00 – $8.00 / board ft | 2-inch minimum; includes vapour barrier function |
| Open-cell spray foam | $2.50 – $5.00 / board ft | Requires separate vapour barrier in Climate Zone 6 |
| Wall insulation (blown-in retrofit) | $2.50 – $5.00 / sq ft | Drill-and-fill; includes hole patching |
| Vapour barrier (6-mil poly) | $0.50 – $1.50 / sq ft | Includes taping and sealant; installed |
| Rigid foam board (XPS) | $1.50 – $3.00 / sq ft | Material only; R-5 per inch typical |
Full Project Cost Estimates by Scope
The following table provides total installed cost estimates for common insulation scopes in Smiths Falls and Renfrew County homes. These are complete project prices, including labour, materials, air sealing, baffles, and disposal.
| Project Scope | Estimated Total Cost | Typical Home / Area |
|---|---|---|
| Full attic job (1,000 sq ft) | $2,000 – $6,000 | Average Smiths Falls bungalow; includes air sealing, baffles, R-60 blown-in |
| Attic top-up (existing R-20 to R-60) | $1,500 – $3,500 | No removal needed; add blown-in over existing |
| Crawlspace insulation | $3,000 – $7,000 | Closed-cell spray foam on walls and rim joist |
| Rim joist spray foam | $600 – $1,200 | 1,500 sq ft home; closed-cell 2–3 inches |
| Wall insulation retrofit (1,500 sq ft home) | $4,000 – $8,000 | Blown-in fibreglass or cellulose; exterior access |
| Basement wall insulation (perimeter) | $3,000 – $6,000 | Rigid foam or spray foam; 50 linear ft basement |
| Vapour barrier + air sealing (attic) | $500 – $1,500 | Primarily labour-focused; high energy ROI |
Key Cost Drivers in Smiths Falls and Renfrew County
Attic Access Difficulty
The single biggest variable in attic insulation pricing is how easy it is to access the attic. A Smiths Falls bungalow with a pull-down attic stair in the main floor ceiling is straightforward. A two-storey home with a small ceiling hatch in an upper closet costs more because each bag of insulation must be carried farther. Very tight attics with limited crawl space may require specialized equipment or longer labour time.
Existing Insulation Removal
If your attic has old, damaged, or pest-infested insulation, it must be removed before new insulation goes in. Removal costs $500 to $1,500 depending on attic size and debris condition. Vermiculite insulation, sometimes found in Smiths Falls homes built before 1990, may contain asbestos and requires specialized removal at significantly higher cost.
Air Sealing Scope
Air sealing an attic before insulating takes time. A thousand-square-foot attic with many penetrations (multiple plumbing stacks, chimney, recessed lights, HVAC ducts) can take a full day for an experienced crew to seal properly. Air sealing labour typically adds $300 to $800 to the total project.
Baffles and Ventilation
Every attic insulation job in Smiths Falls requires soffit-to-ridge ventilation baffles to maintain proper air flow. Baffle installation adds $100 to $300. Homes with inadequate existing soffit vents may also require additional soffit vent installation, which can add $200 to $500.
Budget Recommendation
Property owners in Smiths Falls and Renfrew County should budget 15-20% above the initial quote for attic insulation work. Unexpected conditions — knob-and-tube wiring, concealed moisture damage, or insufficient existing ventilation — are common in older homes. A project quoted at $3,000 may realistically run $3,500 to $3,800 once all issues are addressed.
Related Information
Hiring Guide
How to compare quotes and verify credentials before hiring an insulation contractor.
Read GuideOntario Regulations
Understanding SB-12 requirements and permit costs for insulation projects.
Read GuideAttic Insulation
Detailed guide to blown-in and batt options for reaching R-60 in Rideau Valley attics.
Read Guide