
Garage Door Insulation R-Value Explained for Ontario Homes
What Is Garage Door Insulation R-Value? Garage door insulation R-value is a measurement of thermal resistance, or how well the door slows the flow of heat through it. The higher the R-value, the better the door holds heat in during winter and keeps it out in summer. A garage door’s R-value is not a single material number. It combines the



















