Insulated Steel Door R Value

Based on astm c518 calculation method the door has an r value of up to 11 but using astm c1363 tested operable the same door only have an r value of up to 3 5.

Insulated steel door r value.

In new homes especially in cold climates in very energy efficient buildings look for the best performance doors possible. Mulitple surface options embossed wood grain microgroove wave pattern and smooth. All doors are tested in accordance with astm c1363 and sdi 113. Overhead door corporation uses a calculated door section r value for our insulated doors.

Solar heat gain coefficient shgc a measure of how well a glazed door assembly absorbs or reflects heat from the sun. We have several door styles to meet your insulated door needs for both residential and commercial applications. U value is a measure of the flow of heat through an insulating or building material. Many building owners spend millions of dollars a year on energy bills and the trio e represents a chance for them to realize significant savings on a new or.

Model 5740 17 5 r value. The trio e door is steel stiffened for strength but has achieved an operable u factor of 0 36 which is better than most other steel stiffened doors currently available on the market today. For example a 1 1 2 inch 3 81 cm thick door without a window offers more than five times the insulating value of a solid wood door of the same size. Look for a door with a good insulation value say a u value of at least 0 2 that is r 5 metric.

Model 5720 12 76 r value. Similar to most other building products manufacturers the steel door institute has encouraged the practice of citing a calculated value for thermal performance of the cores in the doors u and r values. 1 u value r value. Polyurethane garage door insulation provides thermal efficiency 9 31 r value.

Steel backing for clean finished interior appearance. While this remains the industry standard we are seeing more specs with the latest standards for thermal transmittance astm c1363 and air. The lower the coefficient the better the glazed door is at blocking the sun s heat. A 2 1 4 inch solid core wooden door for example has an r value of 3 70.

For comparison with other materials a 2 inch thick metal door with a core composed of urethane foam insulation has an r. B18 series steel stiffeners u factor 0 50 r value 2 01. South facing glazed doors in cold climates should. Glazed doors in hot or temperate climates should have a low shgc.