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.
U factor represents the flow of heat through a material meaning the lower the u factor the better.
The thermal performance and energy efficiency of commercial sectional overhead garage doors has become an increasingly more important factor to consider when designing building and maintaining commercial or industrial spaces.
U factor will vary between 0 66 and 1 00 depending on finish and color selection.
U factor though not used as often as r value u factor is another number you may see when shopping for a garage door.
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.
What is the standard r value for a garage door.
U factor and air infiltration results for clopay commercial sectional doors.