How much do contractors charge for wall insulation retrofit in New Brunswick?

Wall insulation retrofits in New Brunswick typically range from $3.50-$8.00 per square foot of exterior wall area, depending on the method and access. For a typical 1,200 sq ft bungalow, expect total costs between $8,000-$18,000 including materials and labour.

Blown-in insulation is the most common retrofit approach for existing walls. Contractors drill holes through exterior siding or interior drywall, blow in cellulose or fibreglass, then patch and paint. This runs $3.50-$5.50 per square foot and can often be completed in 1-2 days. The process works well for balloon-framed homes common in older Moncton, Fredericton, and Saint John neighbourhoods, though fire-stopping may need to be added first.

Spray foam injection costs more at $5.00-$8.00 per square foot but provides superior air sealing — crucial for New Brunswick's harsh winters where temperatures regularly hit -25°C. This method works particularly well for the post-war bungalows common across the province, many of which have minimal original insulation.

Access and complexity significantly affect pricing. Single-story homes with accessible walls cost less than two-story Victorian homes in Saint John's South End or Fredericton's University Avenue area. Homes with brick veneer, stone, or heritage clapboard require more careful hole placement and patching, adding $1.00-$2.00 per square foot. Plaster walls (common in pre-1950s homes) are trickier to patch than drywall, increasing finishing costs.

What's typically included: hole drilling, insulation material, basic patching, and cleanup. What's extra: exterior paint touch-ups, interior painting, electrical work if knob-and-tube wiring is discovered, and any structural repairs uncovered during the process.

New Brunswick's building costs run 20-30% below major Canadian cities, but skilled insulation contractors can be harder to find in northern communities like Bathurst or Campbellton, potentially affecting pricing and scheduling.

Check for NB Power rebates through their Total Home Energy Savings Program before starting work — you may qualify for rebates that offset some costs. The project doesn't require a building permit, but if electrical issues are discovered, you'll need a licensed electrician and NB Power wiring permit.

Next step: Get quotes from at least three contractors who can assess your specific wall construction and recommend the best approach for your home's age and style.