Gaf Roof Insulation R Value

The study considers the effective insu lation value r value f ft2hr btu of a common low slope roofing assembly.

Gaf roof insulation r value. Get to know more about one of the most popular commercial roofing systems. Residential and commercial roofing shingles slate roof ventilation roof underlayments asphaltic and tpo roof membranes. 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.

Meets fm 4450 4470 and ul1256 790 263. Roofing products commercial roofing products insulation and cover boards insulation. This is a significant loss in economic value. Respectively per 4 x 8 board it s a fraction of the weight of gypsum cover boards.

The lowest cost and most effective assembly in terms of r value is case 3 the adhered system. 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 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. Big box type building as indicated for case 1 the mechanically attached system.

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. 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. Gaf is happy to share our website content with you through our free media sharing service. When properly installed it is suitable for use under built up modified bitumen and most single ply roofing systems.

With 80 psi compressive strength and a durable coated glass facer energyguard hd is an ideal board for protecting your roof against the elements. Energyguard hd has an r value of 2 5 the highest of any cover board and at 11 lb. The insulation cost in lost r value for a fully mechanically attached system is 56 079 for this 125 000 sq ft.