U Factor For Garage Doors

For windows skylights and glass doors a u factor may refer to just the glass or glazing alone.

U factor for garage doors.

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. What is the standard r value for a garage door. A high garage door u factor means that your garage door transfers heat easily. 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.

Below is a list of our garage doors and the r value of each one. Now that you understand why u factor is a better energy performance indicator lets discuss the details of it. The u factor shgc and vt factors vary and are determined by the type of glass you specify. Keep in mind that insulated glass units are ineffective if the frame leaks air.

U factor is the rate at which a window door or skylight conducts non solar heat flow. Nfrc u factor ratings however represent the entire window performance including frame and spacer material. With the equivalent energy performance criteria products can be considered certified with the following performance. Or u factor of 0 30 if the shgc is greater than or equal to 0 42.

It s usually expressed in units of btu hr ft2 of. Or u factor of 0 29 if the shgc is greater than or equal to 0 37. Building codes standards such as those found in leed iecc and ansi ashrae ies standard 90 1 provide guidelines and standards for how sectional overhead doors should be made and how they. U factor and air infiltration results for clopay commercial sectional doors.

U factor though not used as often as r value u factor is another number you may see when shopping for a garage door. U factor of 0 28 if the shgc is greater than or equal to 0 32. Fully insulated frame technology is the key factor for eliminating air leakage when using this type of door to seal the building envelope or enclose any climate controlled space. U factor will vary between 0 66 and 1 00 depending on finish and color selection.

U factor measures the rate of heat transfer and is appropriately applied to the thermal efficiency of windows which similar to insulated roll up garage doors are assemblies comprised of multiple components. What is garage door r value. U factor represents the flow of heat through a material meaning the lower the u factor the better. For best u factor choose finish and color with high solar reflectance bright colors.