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What does garage insulation typically cost in New Brunswick?

Question

What does garage insulation typically cost in New Brunswick?

Answer from Construction Brain

Garage insulation in New Brunswick typically runs $3-8 per square foot installed, with most homeowners spending $2,500-6,000 for a standard two-car garage. The wide range depends on insulation type, whether you're doing walls only or including the ceiling, and your garage's current condition.

Breaking down the costs: Basic batt insulation (R-12 to R-20 in walls) runs $3-4 per square foot installed, while spray foam insulation jumps to $6-8 per square foot but provides superior air sealing — crucial in New Brunswick's harsh winters where temperatures regularly hit -25°C to -35°C. A typical 24x24 foot garage needs roughly 800-1,000 square feet of wall insulation, plus another 600 square feet if you're insulating the ceiling.

Material costs in the New Brunswick market are generally 20-30% lower than major urban centers, but you'll pay more for spray foam due to specialized equipment requirements. Expect to pay $1,200-2,000 just for materials if you're DIYing with batts, or $3,500-5,500 for professional spray foam installation. Don't forget vapor barriers, electrical outlet extensions, and drywall if you want a finished look — these add another $1,500-3,000 to the project.

Climate considerations are critical here. New Brunswick's freeze-thaw cycles and coastal moisture (especially near Saint John, Shediac, or Bathurst) mean proper vapor barrier installation is essential. Many older garages lack adequate ventilation, and adding insulation without addressing air leakage can create condensation problems. If your garage shares a wall with your house, that wall should already be insulated to current standards — focus your budget on exterior walls and the ceiling if there's living space above.

Professional installation makes sense for spray foam or if your garage needs electrical work to extend outlets through new insulation. Licensed electrical contractors must handle any wiring modifications (TIS licensing required), and you'll need a wiring permit from NB Power (1-800-615-0522) if you're adding more than 10 outlets or 5 kW of load.

Start by measuring your garage and deciding whether you need a heated workspace or just want to prevent freeze damage to stored items. For basic freeze protection, R-12 in the walls might suffice, but if you're planning a workshop, aim for R-20 walls and R-40 ceiling. Get quotes from at least three insulation contractors in your area — they can assess your specific garage and recommend the most cost-effective approach for your needs and budget.

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