Gaf Roof Insulation R Value

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Gaf roof insulation r value.

Get to know more about one of the most popular commercial roofing systems. Excellent lttr value compared to any other fm class 1 rated products of equivalent thickness. Roofing products commercial roofing products insulation and cover boards insulation. Such roofs are generally considered to have a slope of less than 2 12.

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. When properly installed it is suitable for use under built up modified bitumen and most single ply roofing systems. This is a significant loss in economic value. Energyguard hd has an r value of 2 5 the highest of any cover board and at 11 lb.

The lowest cost and most effective assembly in terms of r value is case 3 the adhered system. Residential and commercial roofing shingles slate roof ventilation roof underlayments asphaltic and tpo roof membranes. The analysis was done for an assembly consisting of a steel deck two layers of polyisocyanurate foam insulation polyiso and tpo single ply membrane. The insulation cost in lost r value for a fully mechanically attached system is 56 079 for this 125 000 sq ft.

With 80 psi compressive strength and a durable coated glass facer energyguard hd is an ideal board for protecting your roof against the elements. Respectively per 4 x 8 board it s a fraction of the weight of gypsum cover boards. 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. The study considers the effective insu lation value r value f ft2hr btu of a common low slope roofing assembly.

Big box type building as indicated for case 1 the mechanically attached system. Meets fm 4450 4470 and ul1256 790 263. 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.