Insulated Steel Door R Value

Mulitple surface options embossed wood grain microgroove wave pattern and smooth.

Insulated steel door 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. We have several door styles to meet your insulated door needs for both residential and commercial applications. The lower the u value the better the insulating ability. 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.

U value is a measure of the flow of heat through an insulating or building material. The r values of most steel and fiberglass clad entry doors range from r 5 to r 6 excluding a window. Glazed doors in hot or temperate climates should have a low shgc. Overhead door corporation uses a calculated door section r value for our insulated doors.

B18 series steel stiffeners u factor 0 50 r value 2 01. In new homes especially in cold climates in very energy efficient buildings look for the best performance doors possible. Model 5740 17 5 r value. The lower the coefficient the better the glazed door is at blocking the sun s heat.

In the chart above you will notice that there are two vastly different r values provided for insulated metal doors with polyurethane insulation. Polyurethane garage door insulation provides thermal efficiency 9 31 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. 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.

A 2 1 4 inch solid core wooden door for example has an r value of 3 70. 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. 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.

Steel backing for clean finished interior appearance. 1 u value r value. All doors are tested in accordance with astm c1363 and sdi 113. For comparison with other materials a 2 inch thick metal door with a core composed of urethane foam insulation has an r.