The R-value is the door's insulation value. The higher the value, the better the insulation. Doors with high insulation values will help keep your garage warm in the winter and cool in the summer by keeping the outside air out.

If your garage is attached to your home or is heated, you may want a door with a high R value to help save on your heating fuel costs. Installing an insulated door may also give you a tax deduction, consult with your accountant. An insulated door is a much more durable door as compared to a non-insulated door. We recommend them because of their durability even if you do not have an attached garage.