Required Thickness Coverboard Roof

Table 1 12 4 30 year platinum tpo requirements.

Required thickness coverboard roof.

Codes exempt foam plastic insulation when used in fm 4450 or ul 1256. 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. 5 8 thickness meets the requirements of type x per astm c 1177.

5 8 thickness meets the requirements of type x per astm c 1177. Coated fiberglass facer ideal for fully adhered systems provides a broader compatibility and higher performance with roofing adhesives. 4 1219 mm 1 8 3 mm. Meets the requirements of astm c 1177.

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. 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. 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. When the total required polyiso insulation thickness is equal to or greater than 3 thickness the minimum recommended thickness is 1 5 for both. The cover board also serves as a substrate for a vapor retarder in this application. When a coverboard in an approved assembly is used any thickness equal to or greater than 1 5 is acceptable.

This significantly increases the time required to melt the insulation which adds fuel to the flames. However thermal efficiency may be increased by the use of multiple layers of flintboard. 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. Securock products are available in thicknesses of 3 8 and 5 8.

1 4 6 4 mm 1 16 1 6 mm width standard. 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. 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 fm tested and approved as the only 1 2 gypsum product to meet the calorimeter requirements for conventionally insulated decks.