Insulated Overhead Door U Value

Garage door r value.

Insulated overhead door u value.

Thermal resistance is a huge factor that affects the energy performance of insulated roll up garage doors when they are in the closed position. The imb v5 door s profile is also available with foamed in place polyurethane. The fact that an exterior door is made of solid wood or steel with a layer of polyurethane does not mean that the door has a good insulation value. 6 82 u factor of 0 147 calculated using the ashrae handbook of fundamentals the slats are insulated with polystyrene for increased thermal protection.

The thermacore product line s unique manufacturing process provides a cfc free fully. 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. Thermacore series commercial sectional doors are an ideal choice for applications that demand the highest levels of thermal efficiency air infiltration and wind load resistance. The higher the r value the better the insulation in the door.

Classic steel model 8500 has the highest level of garage door insulation for our residential doors with an r value of 16 22. Model 5740 17 5 r value. Model 5720 12 76 r value. Engineered for high thermal efficiency.

The insulation of the best doors is in the range of u 0 10 0 20 metric. 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. Thermacore construction provides a continuous layer of foamed in place cfc free polyurethane garage door insulation sandwiched between two layers of corrosion resistant steel for maximum thermal efficiency. The effectiveness of the insulation is expressed as an r value which is a measure of thermal resistance to heat flow.

U value has an inverse relationship to r value. Polyurethane garage door insulation provides thermal efficiency 9 31 r value. With an r value of 17 5 3 09 w m 2 a u value of 057 324 m 2 w and one of the best overall air infiltration ratings in the industry the thermacore model 592 is one of the most thermally efficient door system in its class. Overhead door corporation uses a calculated door section r value for our insulated doors.

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. Thermacore is the premier line of insulated sectional doors available today. Alpine s imb v5 fast acting insulated overhead door rolling insulated door with insulated metal backed slats that are 5 8 inch thick slats with an r value. U value is a measure of the flow of heat through an insulating or building material.

Thermal resistance is measured using r value and u factor. The lower the u value the better the insulating ability. Even the best entry doors have relatively modest insulation levels. Fabricated of 16 gauge flush galvanized steel exterior these 2 51 mm thick doors offer an r value of 7 35.