Required Thickness Coverboard Roof

Meets the requirements of astm c 1177.

Required thickness coverboard roof. Fm class 1 for fire barrier requirements and ul class a unlimited slope with excellent surface burning characteristics. Thickness of firestone insulation acceptable for use as an immediate substrate for firestone roof membranes in firestone red shield warranties. D annunzio is president of paragon roofing technology inc a construction engineering firm he founded in 1989. He is the editorial director of architectural roofing waterproofing and a technical columnist for roofing contractor.

Coated fiberglass facer ideal for fully adhered systems provides a broader compatibility and higher performance with roofing adhesives. Coated fiberglass facer ideal for fully adhered systems provides a broader compatibility and higher performance with roofing adhesives. However thermal efficiency may be increased by the use of multiple layers of flintboard. 4 1219 mm 1 8 3 mm.

Fm class 1 for fire barrier requirements and ul class a unlimited slope with excellent surface burning characteristics. The cover board also serves as a substrate for a vapor retarder in this application. In this application the cover board provides a fire barrier in the case of an internal fire. When a coverboard in an approved assembly is used any thickness equal to or greater than 1 5 is acceptable.

Physical properties listed above are presented as typical average values as determined by accepted astm test methods and are subject to normal manufacturing. 5 8 thickness meets the requirements of type x per astm c 1177. This significantly increases the time required to melt the insulation which adds fuel to the flames. Table 1 12 4 30 year platinum tpo requirements.

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. 1 4 6 4 mm 1 16 1 6 mm width standard. Flame spread index of 75 and smoke development 450 meet code requirements for foam plastic roof insulation.

Tested in accordance with astm e84 its surface burning characteristics are flame spread 0 and smoke developed 0. Codes exempt foam plastic insulation when used in fm 4450 or ul 1256. 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. Securock products are available in thicknesses of 3 8 and 5 8.

He has published more than 100 articles and has written four books on building exterior issues. Over the roof deck.