Required Thickness Coverboard Roof

Dens deck provides an excellent substrate for all types of conventional low slope roofing membranes particularly in fully adhered assemblies. This signiﬁcantly increases the time required to melt the insulation which adds fuel to the ﬂames. Coated fiberglass facer ideal for fully adhered systems provides a broader compatibility and higher performance with roofing adhesives.

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Fm class 1 for fire barrier requirements and ul class a unlimited slope with excellent surface burning characteristics.

Required thickness coverboard roof.

Physical properties listed above are presented as typical average values as determined by accepted astm test methods and are subject to normal manufacturing. Meets the requirements of astm c 1177. Securock products are available in thicknesses of 3 8 and 5 8. 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. Codes exempt foam plastic insulation when used in fm 4450 or ul 1256. 5 8 thickness meets the requirements of type x per astm c 1177. Over the roof deck.

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. The boards are manufactured in standard sizes of 4 feet by 8 feet and an average thickness of 3 8 inch. Tested in accordance with astm e84 its surface burning characteristics are flame spread 0 and smoke developed 0. The material is durable and provides superior impact and puncture resistance.

Densdeck roof boards are fm tested and approved as the only 1 2 gypsum product to meet the calorimeter requirements for conventionally insulated decks. Flame spread index of 75 and smoke development 450 meet code requirements for foam plastic roof insulation.

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