Roof Cover Board Thickness

The building is more susceptible to hail fi re and wind damage.

Roof cover board thickness.

R value is the measure. The greatest risks to roofs aren t always seen. R values 28 tested in accordance with astm c518 spannings. Insulation cover boards training and education take advantage of industry leading training and education though care the center for the advancement of roofing excellence.

Meets the requirements of astm c 1177. 5 8 thickness meets the requirements of type x per astm c 1177. Can be used as a cover board in re roofing and new construction proven to reduce the tendency for blistering in hot asphalt applications. Without a cover board the roof is missing added durability.

Superior dimensional stability over competitive gypsum fiber boards is due to their low coefficient of thermal and hygrometric expansion. In addition national roofing contractors association nrca has issued bulletins over the years recommending the use of cover boards to minimize damage to polyiso. Hail is damaging to insulation but by using a cover board the impact is minimized. Insulation damage results in a reduction of the roof s thermal resistance or r value.

Wood edges are routed 1 8 to allow for expansion and contraction of the wood. 1 4 dens deck roof board. Fully adhered cover boards should be applied in accordance with proper roofing procedures. The 1 architecturally specified fiberglass mat gypsum roof cover board for nearly 30 years 1.

1 4 spans flute widths up to 2 5 8 flexural strengths parallel lbs. 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. Coated fiberglass facer ideal for fully adhered systems provides a broader compatibility and higher performance with roofing adhesives. To prevent blistering with built up roof membranes bur and to provide a separation layer and flat surface in re cover situations.

Cover boards have historically had two uses. 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. Available wood thickness standard 7 16 or 5 8 thick rated 1 osb. 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.