To keep your garage cool in summer or warm in winter you want a garage door with a u factor of 35 or less although the lower the u factor the better.
Garage door u factor.
What is garage door r value.
U factor will vary between 0 66 and 1 00 depending on finish and color selection.
What is the standard r value for a garage door.
U factor represents the flow of heat through a material meaning the lower the u factor the better.
U factor and air infiltration results for clopay commercial sectional doors.
A high garage door u factor means that your garage door transfers heat easily.
Below is a list of our garage doors and the r value of each one.
For best u factor choose finish and color with high solar reflectance bright colors.