Required Thickness Coverboard Roof

Coated fiberglass facer ideal for fully adhered systems provides a broader compatibility and higher performance with roofing adhesives.

Required thickness coverboard roof.

However thermal efficiency may be increased by the use of multiple layers of flintboard. Codes exempt foam plastic insulation when used in fm 4450 or ul 1256. Tested in accordance with astm e84 its surface burning characteristics are flame spread 0 and smoke developed 0. Fm class 1 for fire barrier requirements and ul class a unlimited slope with excellent surface burning characteristics.

Fm class 1 for fire barrier requirements and ul class a unlimited slope with excellent surface burning characteristics. When a coverboard in an approved assembly is used any thickness equal to or greater than 1 5 is acceptable. It provides exceptional bond and low absorption in adhered systems and offers sustainable design for all types of roofing systems including single ply fluid applied built up spray foam metal and modified bitumen roofing. 4 1219 mm 1 8 3 mm.

Table 1 12 4 30 year platinum tpo requirements. 1 4 6 4 mm 1 16 1 6 mm width standard. When the total required polyiso insulation thickness is equal to or greater than 3 thickness the minimum recommended thickness is 1 5 for both. Securock products are available in thicknesses of 3 8 and 5 8.

Thickness of firestone insulation acceptable for use as an immediate substrate for firestone roof membranes in firestone red shield warranties. Over the roof deck. He has published more than 100 articles and has written four books on building exterior issues. Coated fiberglass facer ideal for fully adhered systems provides a broader compatibility and higher performance with roofing adhesives.

Densdeck roof boards are utilized in a wide variety of roofing systems for new and re roofing applications as gypsum roof cover boards and thermal barriers. Physical properties listed above are presented as typical average values as determined by accepted astm test methods and are subject to normal manufacturing. Densdeck roof boards are fm tested and approved as the only 1 2 gypsum product to meet the calorimeter requirements for conventionally insulated decks. 5 8 thickness meets the requirements of type x per astm c 1177.

Flame spread index of 75 and smoke development 450 meet code requirements for foam plastic roof insulation. Meets the requirements of astm c 1177. This significantly increases the time required to melt the insulation which adds fuel to the flames. The cover board also serves as a substrate for a vapor retarder in this application.

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