What R-value garage door do I need in Montreal?

For attached garages in Montreal, we recommend R-12 minimum, with R-16 to R-18 being ideal for maximum energy savings. Detached garages can use lower R-values unless you heat the garage.

Can I add insulation to my existing garage door?

Yes, DIY insulation kits are available. However, adding weight may affect door balance and require spring adjustment. For older doors, a complete replacement with a factory-insulated door is often more cost-effective.

Will an insulated garage door make my garage warm?

Insulation prevents heat loss but does not generate heat. An insulated door will keep your garage warmer than outside temperature, but you will need a heater for a truly warm garage in Montreal winters.

How much can I save with an insulated garage door?

Montreal homeowners typically save $100-$300 annually on heating costs with a properly insulated garage door. Savings depend on your current door, home layout, and heating system efficiency.

Garage Door Insulation: How to Save Hundreds on Energy Bills

If your garage is attached to your home, your garage door could be costing you hundreds of dollars in heating bills every winter. Here is what Montreal homeowners need to know about garage door insulation.

Why Garage Door Insulation Matters

Your garage door is likely the largest uninsulated surface in your home. In Montreal climate, an uninsulated door can:

Let cold air seep into your living space
Force your heating system to work harder
Allow pipes in the garage to freeze
Make your garage unusable in winter

Understanding R-Values

R-value measures insulation effectiveness—higher is better.

R-0 to R-6: Non-insulated or minimal insulation
R-8 to R-12: Standard insulation for attached garages
R-13 to R-18: High insulation for heated garages or living spaces above

For Montreal homes with attached garages, we recommend R-12 or higher.

Types of Insulated Garage Doors

Polystyrene Insulation

R-value: R-4 to R-8
Cost: $$
Lightweight panels inserted between door sections
Good budget option for moderate climates

Polyurethane Insulation

R-value: R-12 to R-18+
Cost: $$$
Foam sprayed into the door, bonding to steel
Best for Montreal winters
Also strengthens the door structure

Cost vs. Savings Analysis

Upgrading from non-insulated to R-16 polyurethane door:

Cost: $1,200-$2,500 installed
Annual heating savings: $100-$300 (varies by home)
Payback period: 5-10 years

Adding insulation kit to existing door:

Cost: $100-$300 DIY
Annual heating savings: $50-$150
Payback period: 1-3 years

We Can Help

Our team can assess your current door and recommend the best solution for your home and budget. We carry insulated doors from major manufacturers with R-values up to R-18.

Call (438) 922-8583 for a free insulation assessment.

Garage Door Insulation: How to Save Hundreds on Energy Bills