Complete Cost Breakdown: Insulation by Type
The cost of insulating a home in Renfrew County depends primarily on the insulation type, the R-value target, and the scope of the project. The table below covers costs for individual insulation components as installed by a professional contractor.
| Insulation Component | Typical Range (CAD) | Basis / Notes |
|---|---|---|
| Blown-in attic — cellulose (per sq ft) | $1.20 – $2.50 | To R-50; includes air sealing in most quotes |
| Blown-in attic — fibreglass (per sq ft) | $1.00 – $2.00 | Lighter material; more depth needed for same R-value |
| Batt attic insulation (per sq ft) | $0.80 – $1.50 | Materials only; DIY installation |
| Blown-in walls — existing (per sq ft) | $1.50 – $3.50 | Dense-pack cellulose through drilled holes |
| Closed-cell spray foam (per board foot) | $4.00 – $8.00 | R-2.0–3.0/inch; includes vapour barrier |
| Open-cell spray foam (per board foot) | $2.50 – $5.00 | R-3.5–3.7/inch; vapour barrier separate |
| Vapour barrier — 6-mil poly (per sq ft) | $0.50 – $1.50 | Installed; includes seam sealing |
| Full attic job — 1,000 sq ft (total) | $1,500 – $5,000 | Blown-in to R-50; includes air sealing |
| Crawlspace insulation (per sq ft) | $3.00 – $6.00 | Closed-cell foam on walls; includes vapour barrier on floor |
| Rim joist spray foam (per linear ft) | $10 – $25 | Closed-cell; 2–3 inch thickness |
Total Project Cost by Scope
The following estimates show typical total costs for common insulation projects in Renfrew County, including labour, materials, and basic preparation.
| Project Scope | Estimated Total Cost | Typical Homes in Renfrew County |
|---|---|---|
| Attic top-up (add R-20–40 over existing, 1,000 sq ft) | $1,200 – $3,000 | Pembroke bungalows, Renfrew town homes; existing insulation present |
| Attic full replacement to R-50 (1,000 sq ft) | $2,000 – $5,000 | Older homes with minimal or deteriorated insulation; includes removal |
| Attic full to R-60 (1,000 sq ft, new build) | $2,500 – $5,500 | New construction or gut renovation; blown-in or spray foam |
| Rim joist sealing (2,000 sq ft home) | $400 – $1,200 | Most Pembroke and Petawawa homes; closed-cell spray foam |
| Basement wall insulation (500 sq ft finished wall) | $1,500 – $4,000 | Typical basement; spray foam or rigid foam + batts |
| Full house air sealing + attic insulation to R-50 | $3,000 – $7,000 | Comprehensive package; including blower door test |
| Spray foam attic (1,000 sq ft, closed-cell to R-50) | $8,000 – $16,000 | Premium solution; closed-cell throughout |
| New build — full wall + attic insulation | $5,000 – $15,000 | New home, 2,000 sq ft; depends on R-value targets and material |
Factors That Push Insulation Costs Higher in Renfrew County
Access Difficulty
Attics with very low roof pitch, limited headroom, or crawl-only access require more labour. Contractors may need to work in restrictive positions, slowing the installation. Small attic hatches (typical in pre-1970s homes) can also complicate access and increase the time required.
Existing Insulation Removal
If the existing insulation is contaminated (mould, rodent damage, or vermiculite that may contain asbestos), it must be removed before new insulation can be installed. Vermiculite removal requires specialized handling and disposal due to possible asbestos content. Removal costs range from $0.50 to $1.50 per square foot for standard materials, but vermiculite/asbestos abatement can cost $3–$8 per square foot.
Air Sealing Scope
The extent of air sealing required varies dramatically. A 1960s bungalow in Petawawa with dozens of wiring penetrations, an unsealed attic hatch, and multiple plumbing stacks will require significantly more labour for air sealing than a newer home with fewer penetrations. Some contractors include basic air sealing in their blown-in insulation quotes; others charge separately.
Geographic Location Within Renfrew County
Properties in remote parts of Renfrew County — Deep River, Chalk River, Combermere, Palmer Rapids — may incur additional travel or mobilization charges. Contractors based in Pembroke may charge a travel fee for sites more than 30–45 minutes from their yard. For small jobs, this can represent a significant percentage of the total cost.
Obstruction Density
An attic full of ducts, junction boxes, wiring, plumbing vents, and cross-bracing takes longer to insulate than a clean, open attic. Blown-in insulation requires careful work around obstructions. Spray foam also takes more time in complex cavities.
Budget Contingency Recommendation
Renfrew County homeowners commonly recommend budgeting 10–20% above the initial estimate for insulation projects. The primary unknowns are existing insulation condition (whether removal is needed), actual air sealing requirements once work begins, and access complications that aren't visible during the initial walk-through.
Related Information
Ontario Regulations
Permit requirements, R-value minimums, and vapour barrier rules under Ontario Building Code.
Read GuideHiring Guide
How to compare quotes and verify credentials before hiring a Renfrew County insulation contractor.
Read GuideAttic Insulation Guide
Types, R-values, ventilation, and cost details for attic insulation in Ottawa Valley homes.
Read Guide