Garage Insulation Toronto

The Ontario Building Code requires a minimum 1-hour fire resistance rating on all walls and ceilings separating an attached garage from the living space. This means the assembly (drywall + insulation + framing) must withstand fire for at least 60 minutes. At Unique Fireproofing, we ensure all our garage insulation installations meet or exceed this requirement.

Closed-cell spray foam is the best insulation for garages because it provides high R-value per inch, acts as an air and moisture barrier, and contributes to the fire separation assembly. For garage ceilings separating from living space above, 2-3 inches of closed-cell spray foam combined with 5/8-inch Type X drywall provides excellent fire resistance and thermal performance.

Garage insulation costs in Toronto typically range from $2,000 to $5,000 for a standard two-car garage, depending on the scope of work. Ceiling-only insulation is less expensive, while a full garage insulation package including ceiling, walls, and weatherstripping costs more but delivers the greatest comfort and energy savings.

Insulating your garage walls and ceiling significantly increases the ambient temperature, often raising it by 10-15 degrees Celsius compared to an uninsulated garage. While insulation alone won't make the space as warm as your home, it makes supplemental heating far more effective and affordable, allowing comfortable use as a workshop year-round.

Yes, if your garage is attached to your home. The OBC requires fire separation regardless of how you use the garage. Beyond code compliance, insulating the garage ceiling prevents heat loss from rooms above the garage (often the coldest rooms in the house), and insulating shared walls reduces energy bills and improves comfort throughout your home.