What does garage insulation full typically cost in New Brunswick?

Fully insulating a garage in New Brunswick typically runs $2,500-$6,500, depending on size, insulation type, and whether you're doing walls only or including the ceiling and overhead door.

For a standard 2-car garage (24x24 feet), expect these ranges:

Basic spray foam insulation (walls and ceiling): $3,500-$5,000. Closed-cell spray foam provides excellent air sealing — crucial in New Brunswick's harsh winters where temperatures regularly hit -25°C. This option gives you the best thermal performance and moisture control.

Fiberglass batt insulation with vapor barrier: $1,800-$3,200 for materials and installation. You'll need R-20 in walls and R-31+ in the ceiling to handle our climate effectively. Many contractors recommend upgrading to R-24 walls given NB's extended heating season.

Blown-in cellulose: $2,200-$4,000. Good option for existing garages where you're adding insulation without major renovation. Works well in our freeze-thaw cycles.

Additional costs to consider: Insulated garage door ($800-$2,500), electrical for heating ($500-$1,500), and drywall finishing if you want a complete interior ($1,200-$2,800). If you're planning to heat the space, factor in extending your home's heating system or installing a separate unit.

Climate factors affecting pricing: New Brunswick's 4+ foot frost line means your garage foundation should already extend below frost depth. However, older garages may lack proper vapor barriers — essential given our high humidity from coastal influence and frequent freeze-thaw cycles. Expect to address moisture issues, which can add $500-$1,500 to the project.

Professional vs DIY: While you can install fiberglass batts yourself, spray foam requires professional application and proper ventilation during curing. Most contractors recommend professional installation for best results — improper vapor barrier placement can create serious moisture problems in our climate.

Smart next step: Get quotes from 3-4 insulation contractors in your area. Ask specifically about vapor barrier placement and whether they recommend heating the space year-round to prevent condensation issues. Many NB homeowners find that a properly insulated, heated garage pays for itself through reduced freeze-thaw damage to vehicles and stored items.

Browse insulation contractors in our directory at New Brunswick Construction Network to find licensed professionals in your area.

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