Insulated Steel Door R Value

In the chart above you will notice that there are two vastly different r values provided for insulated metal doors with polyurethane insulation.

Insulated steel door r value.

The lower the coefficient the better the glazed door is at blocking the sun s heat. Overhead door corporation uses a calculated door section r value for our insulated doors. A 2 1 4 inch solid core wooden door for example has an r value of 3 70. Mulitple surface options embossed wood grain microgroove wave pattern and smooth.

In new homes especially in cold climates in very energy efficient buildings look for the best performance doors possible. Steel backing for clean finished interior appearance. 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. All doors are tested in accordance with astm c1363 and sdi 113.

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 u value the better the insulating ability. 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.

The r values of most steel and fiberglass clad entry doors range from r 5 to r 6 excluding a window. 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. Model 5740 17 5 r value.

Glazed doors in hot or temperate climates should have a low shgc. U value is a measure of the flow of heat through an insulating or building material. Model 5720 12 76 r value. Polyurethane garage door insulation provides thermal efficiency 9 31 r value.

1 u value r value. While this remains the industry standard we are seeing more specs with the latest standards for thermal transmittance astm c1363 and air. Solar heat gain coefficient shgc a measure of how well a glazed door assembly absorbs or reflects heat from the sun. B18 series steel stiffeners u factor 0 50 r value 2 01.