U Factor Insulated Metal Garage Door

U factor will vary between 0 66 and 1 00 depending on finish and color selection.

U factor insulated metal garage door.

Thermal resistance is measured using r value and u factor. U factor represents the flow of heat through a material meaning the lower the u factor the better. Factor the more effective the insulation of the material. Though not used as often as r value u factor is another number you may see when shopping for a garage door.

Reference table for u values u value is the coefficient of transmission i e the transmission of heat through the materials which compose the building s envelope or outer shell. Below is a list of our garage doors and the r value of each one. Other features may include screens with self. Thermal resistance is a huge factor that affects the energy performance of insulated roll up garage doors when they are in the closed position.

U value has an inverse relationship to r value. Advanced thermal performance this door system presents the most advanced thermal performance values published by any major us manufacturer of 3 commercial insulated sectional doors with an r value of 26 u value of 038 and a tested installed u factor of 14. Metal framed storm doors might have foam insulation inside their frames. What is the standard r value for a garage door.

Wooden storm doors require more maintenance than the other types. For example a building with material with an r value of r 11 converts to an u value of 0 09 1 r or 1 11 0 09. B18 series steel stiffeners u factor 0 50 r value 2 01. Find garage doors at lowe s today.

Air leakage on the other hand refers to the seal at the overhead door guides head and hood while the rolling door is in the closed position. High quality storm doors use low emissivity low e glass or glazing. For windows skylights and glass doors a u factor may refer to just the glass or glazing alone. All doors are tested in accordance with astm c1363 and sdi 113.

Storm door frames are usually made of aluminum steel fiberglass or wood painted or not. The thermacore ap 850 features superior construction with a 3 thick profile consisting of high density foam injected cfc and. U factor is the rate at which a window door or skylight conducts non solar heat flow. It s usually expressed in units of btu hr ft2 of.

For best u factor choose finish and color with high solar reflectance bright colors. Modern steel 2 or 1 3 8 polystyrene.