Roof Cover Board Thickness

5 8 thickness meets the requirements of type x per astm c 1177.

Roof cover board thickness.

Wood edges are routed 1 8 to allow for expansion and contraction of the wood. The cover board should be secured to the bottom layer of insulation in a full and even application of hot asphalt applied at a rate of 30 pounds per square or specially formulated adhesive. Structodek is lightweight compared to many other roofing cover boards and it is fiberglass free and cuts with a standard utility knife. Coated fiberglass facer ideal for fully adhered systems provides a broader compatibility and higher performance with roofing adhesives.

Stocked in 12 locations around the country to facilitate job start ups and completions structodek is available in 4 x4 and 4 x8 boards w56 358 8531 for a 4 x4 x board and w56 358 8532 for. Cover boards have historically had two uses. Fm class 1 for fire barrier requirements and ul class a unlimited slope with excellent surface burning characteristics. Insulation cover boards training and education take advantage of industry leading training and education though care the center for the advancement of roofing excellence.

Superior dimensional stability over competitive gypsum fiber boards is due to their low coefficient of thermal and hygrometric expansion. Available wood thickness standard 7 16 or 5 8 thick rated 1 osb. The greatest risks to roofs aren t always seen. Fully adhered cover boards should be applied in accordance with proper roofing procedures.

Without a cover board the roof is missing added durability. 1 4 spans flute widths up to 2 5 8 flexural strengths parallel lbs. Insulation damage results in a reduction of the roof s thermal resistance or r value. To prevent blistering with built up roof membranes bur and to provide a separation layer and flat surface in re cover situations.

R values 28 tested in accordance with astm c518 spannings. Hail is damaging to insulation but by using a cover board the impact is minimized. The building is more susceptible to hail fi re and wind damage. Cover boards should be set over the bottom layer of insulation.

R value is the measure. Learn how adding a densdeck prime or densdeck stormx prime roof board to your roof assembly can help thwart the common damage inflicted by water wind fire puncture and more. 1 4 dens deck roof board. Can be used as a cover board in re roofing and new construction proven to reduce the tendency for blistering in hot asphalt applications.