The lowest cost and most effective assembly in terms of r value is case 3 the adhered system.
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.
Excellent lttr value compared to any other fm class 1 rated products of equivalent thickness.
Residential and commercial roofing shingles slate roof ventilation roof underlayments asphaltic and tpo roof membranes.
With 80 psi compressive strength and a durable coated glass facer energyguard hd is an ideal board for protecting your roof against the elements.
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Respectively per 4 x 8 board it s a fraction of the weight of gypsum cover boards.
The analysis was done for an assembly consisting of a steel deck two layers of polyisocyanurate foam insulation polyiso and tpo single ply membrane.
Big box type building as indicated for case 1 the mechanically attached system.
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.
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.
Get to know more about one of the most popular commercial roofing systems.
Roofing shingles and materials plus factory certified roofers including ratings from real homeowners from north america s largest roofing manufacturer.
The insulation cost in lost r value for a fully mechanically attached system is 56 079 for this 125 000 sq ft.
Meets fm 4450 4470 and ul1256 790 263.
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 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.
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.
