U Factor For Garage Doors

The u factor shgc and vt factors vary and are determined by the type of glass you specify.

U factor for garage doors.

Fire doors are usually rated for 20 or 90 minutes. 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. U factor represents the flow of heat through a material meaning the lower the u factor the better. Below is a list of our garage doors and the r value of each one.

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. It s usually expressed in units of btu hr ft2 of. 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. 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. Or u factor of 0 30 if the shgc is greater than or equal to 0 42. For windows skylights and glass doors a u factor may refer to just the glass or glazing alone. Now that you understand why u factor is a better energy performance indicator lets discuss the details of it.

For best u factor choose finish and color with high solar reflectance bright colors. 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 is the rate at which a window door or skylight conducts non solar heat flow. 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. U factor and air infiltration results for clopay commercial sectional doors. The fire door rating measures how long a door can prevent the passage of flame from one side of the door assembly to the other. What is the standard r value for a garage door.

U factor of 0 28 if the shgc is greater than or equal to 0 32. Nfrc u factor ratings however represent the entire window performance including frame and spacer material. Keep in mind that insulated glass units are ineffective if the frame leaks air. Therma tru offers a wide selection of fiberglass 20 minute fire rated doors for protection with a sense of style.