Here’s how to understand R-Values and garage door insulation temperature difference. Insulation’s ability to slow the transfer of heat is measured with R-values. Residential garage door insulation tends to have R-values between R-6.3 and R-19. While the numbers increase exponentially, the added effectiveness progresses at a much slower rate.

R-values provide a good estimate of insulation value, but they are not a perfect science, as they do not account for other factors, such as wall and ceiling insulation and less-insulated parts of the structure like studs and windows.

In general, however, an energy-efficient R-18 garage door can keep a garage space about 10-14 degrees warmer in the winter and 22-26 degrees cooler in the summer, if the door isn’t opened and closed frequently.

Call Marble Falls Garage Doors @ (830)229-7277