Insulated Steel Door U Value

The gray primer finish is suitable for painting.

Insulated steel door u value.

0 56 to 1 13 w m2k which is high compared to other doors but low compared to well insulated walls and attics with many inches of foam or mineral wool or other insulation material in their assemblies. U value has an inverse relationship to r value. Polyurethane will have the. Hollow metal doors are made of channel reinforced steel sheets and filled with insulation materials such as polystyrene kraft honeycomb or polyurethane.

B18 series steel stiffeners u factor 0 50 r value 2 01. Overhead door corporation uses a calculated door section r value for our insulated doors. The insulation value is much higher than the honeycomb but lower than the polyurethane. The r values of most steel and fiberglass clad entry doors range from r 5 to r 6 excluding a window.

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. The lower the u value the better the insulating ability. This insulated core is a foam that is injected into the core and expands to fill all the available space within the cavity of the hollow metal door. 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.

L18 series per astm c1363 r factor 2 64 u factor 38. We have several door styles to meet your insulated door needs for both residential and commercial applications. Climador has an exceptionally low u value of up to 1 4u and has been added to the strongdor range to address the growing demand for thermally proficient insulated steel doors. The insulation of the best doors is in the range of u 0 10 0 20 metric.

Please see the charts below for each product s specific u values. 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. U value is a measure of the flow of heat through an insulating or building material. Made from galvanised sheet steel climador comes in double or single leaf configurations and is ideally suited to internal or external applications for commercial.

Pulse fiberglass steel doors. 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. Standard metal doors are 1 3 4 thick and are prime coat painted. All doors are tested in accordance with astm c1363 and sdi 113.

The lower the u value the more effective the insulation of the material.