Insulated Steel Door R Value

Model 5740 17 5 r value.

Insulated steel door r value.

Model 5720 12 76 r value. The lower the u value the better the insulating ability. Mulitple surface options embossed wood grain microgroove wave pattern and smooth. We have several door styles to meet your insulated door needs for both residential and commercial applications.

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. The lower the coefficient the better the glazed door is at blocking the sun s heat. 1 u value r value. A 2 1 4 inch solid core wooden door for example has an r value of 3 70.

B18 series steel stiffeners u factor 0 50 r value 2 01. In the chart above you will notice that there are two vastly different r values provided for insulated metal doors with polyurethane insulation. In new homes especially in cold climates in very energy efficient buildings look for the best performance doors possible. 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.

Polyurethane garage door insulation provides thermal efficiency 9 31 r value. 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. All doors are tested in accordance with astm c1363 and sdi 113. 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.

Look for a door with a good insulation value say a u value of at least 0 2 that is r 5 metric. While this remains the industry standard we are seeing more specs with the latest standards for thermal transmittance astm c1363 and air. Steel backing for clean finished interior appearance. South facing glazed doors in cold climates should.

Glazed doors in hot or temperate climates should have a low shgc. For comparison with other materials a 2 inch thick metal door with a core composed of urethane foam insulation has an r. 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. Overhead door corporation uses a calculated door section r value for our insulated doors.