Required Thickness Coverboard Roof

Densdeck roof boards are fm tested and approved as the only 1 2 gypsum product to meet the calorimeter requirements for conventionally insulated decks.

Required thickness coverboard roof. 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. Coated fiberglass facer ideal for fully adhered systems provides a broader compatibility and higher performance with roofing adhesives. 1 4 6 4 mm 1 16 1 6 mm width standard.

Fm class 1 for fire barrier requirements and ul class a unlimited slope with excellent surface burning characteristics. Table 1 12 4 30 year platinum tpo requirements. Fm class 1 for fire barrier requirements and ul class a unlimited slope with excellent surface burning characteristics. Coated fiberglass facer ideal for fully adhered systems provides a broader compatibility and higher performance with roofing adhesives.

Meets the requirements of astm c 1177. Thickness of firestone insulation acceptable for use as an immediate substrate for firestone roof membranes in firestone red shield warranties. This significantly increases the time required to melt the insulation which adds fuel to the flames. He is the editorial director of architectural roofing waterproofing and a technical columnist for roofing contractor.

5 8 thickness meets the requirements of type x per astm c 1177. Physical properties listed above are presented as typical average values as determined by accepted astm test methods and are subject to normal manufacturing. In this application the cover board provides a fire barrier in the case of an internal fire. 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.

D annunzio is president of paragon roofing technology inc a construction engineering firm he founded in 1989. Over the roof deck. He has published more than 100 articles and has written four books on building exterior issues. Flame spread index of 75 and smoke development 450 meet code requirements for foam plastic roof insulation.

Codes exempt foam plastic insulation when used in fm 4450 or ul 1256. Meets the requirements of astm c 1177. When a coverboard in an approved assembly is used any thickness equal to or greater than 1 5 is acceptable. Tested in accordance with astm e84 its surface burning characteristics are flame spread 0 and smoke developed 0.

Securock products are available in thicknesses of 3 8 and 5 8. However thermal efficiency may be increased by the use of multiple layers of flintboard.