U Factor Garage Door

U factor and air infiltration results for clopay commercial sectional 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.

U factor garage door.

U factor represents the flow of heat through a material meaning the lower the u factor the better. U factor will vary between 0 66 and 1 00 depending on finish and color selection. U factor is the rate at which a window door or skylight conducts non solar heat flow. U factor units are btu hour x ft x f to determine thermal properties as applied to a garage door there are two methods for consideration.

Below is a list of our garage doors and the r value of each one. U value has an inverse relationship to r value. Your garage door u factor measures the heat transference of your garage door or how well heat can move through the material. For best u factor choose finish and color with high solar reflectance bright colors.

It s usually expressed in units of btu hr ft2 of. What is the standard r value for a garage door. U factor though not used as often as r value u factor is another number you may see when shopping for a garage door. For windows skylights and glass doors a u factor may refer to just the glass or glazing alone.

A high garage door u factor means that your garage door transfers heat easily. Fabricated of 16 gauge flush galvanized steel exterior these 2 51 mm thick doors offer an r value of 7 35. Nfrc ratings are determined for a fixed set of environmental conditions and a specific product size. The u factor shgc and vt factors vary and are determined by the type of glass you specify.

By contrast u factor is a measure of thermal transmittance of heat flow. Manufacturer stipulates that these ratings conform to applicable nfrc procedures for determining whole product performance. Keep in mind that insulated glass units are ineffective if the frame leaks air. 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.

Insulated sectional steel doors the insulated sectional steel door model 418 is a high quality heavy duty door that provides protection against hot and cold environments. Nfrc u factor ratings however represent the entire window performance including frame and spacer material. This involves the door section only and represents r value through the mean thickness of the section. 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.