Gaf Roof Insulation R Value

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Gaf roof insulation r value.

The lowest cost and most effective assembly in terms of r value is case 3 the adhered system. Roofing shingles and materials plus factory certified roofers including ratings from real homeowners from north america s largest roofing manufacturer. Energyguard nh barrier polyiso roof insulation board is made of coated glass fiber bonded to a core of isocyanurate foam and achieves an ansi ul 790 roof rating over combustible wood decks with a 1 board thinckness without the use of halogenated flame retardants. Energyguard nh hd polyiso roof insulation meets all the inherent properties and performance polyiso is known for and has the highest r value 2 5 of any cover board without any halogenated flame retardants making it your best choice for a sustainable building design.

With 80 psi compressive strength and a durable coated glass facer energyguard hd is an ideal board for protecting your roof against the elements. Gaf is happy to share our website content with you through our free media sharing service. Energyguard composite board roof insulation is designed for use over structural roof decks where r values of 7 4 or higher are required along with moderate insulation thickness for roof edge detailing and where comprehensive ul and fm approvals are necessary. When properly installed it is suitable for use under built up modified bitumen and most single ply roofing systems.

Respectively per 4 x 8 board it s a fraction of the weight of gypsum cover boards. The insulation cost in lost r value for a fully mechanically attached system is 56 079 for this 125 000 sq ft. Excellent lttr value compared to any other fm class 1 rated products of equivalent thickness. Meets fm 4450 4470 and ul1256 790 263.

The analysis was done for an assembly consisting of a steel deck two layers of polyisocyanurate foam insulation polyiso and tpo single ply membrane. Energyguard polyiso insulation is designed for use over structural roof decks where r values of 5 7 or higher are required along with comprehensive ul and fm approvals. The study considers the effective insu lation value r value f ft2hr btu of a common low slope roofing assembly. Fm approved subject to the conditions of approval as a roof insulation when installed as shown in the current edition of the factory mutual research approvals guide.

This is a significant loss in economic value. Residential and commercial roofing shingles slate roof ventilation roof underlayments asphaltic and tpo roof membranes. Get to know more about one of the most popular commercial roofing systems.