Roof Cover Board Thickness

Available wood thickness standard 7 16 or 5 8 thick rated 1 osb.

Roof cover board thickness.

Cover boards should be set over the bottom layer of insulation. The greatest risks to roofs aren t always seen. Cover boards have historically had two uses. Insulation cover boards training and education take advantage of industry leading training and education though care the center for the advancement of roofing excellence.

1 4 spans flute widths up to 2 5 8 flexural strengths parallel lbs. Without a cover board the roof is missing added durability. Fm class 1 for fire barrier requirements and ul class a unlimited slope with excellent surface burning characteristics. 5 8 thickness meets the requirements of type x per astm c 1177.

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. Fully adhered cover boards should be applied in accordance with proper roofing procedures. Coated fiberglass facer ideal for fully adhered systems provides a broader compatibility and higher performance with roofing adhesives.

The 1 architecturally specified fiberglass mat gypsum roof cover board for nearly 30 years 1. 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. 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. Wood edges are routed 1 8 to allow for expansion and contraction of the wood.

The building is more susceptible to hail fi re and wind damage. Meets the requirements of astm c 1177. R values 28 tested in accordance with astm c518 spannings. 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. In addition national roofing contractors association nrca has issued bulletins over the years recommending the use of cover boards to minimize damage to polyiso. 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.