Iso Roof Insulation R Value

To minimize the effects of thermal bridging atlas strongly recommends the use of multiple layers when the total desired or specified r value requires an insulation thickness greater than 2 7 thick.

Iso roof insulation r value.

It can be attached using a variety of methods and is compatible with all of carlisle s single ply systems. Membrane roof systems 2015 nrca had recommended designers use in service r values of 5 0 per inch thickness in predominant. Excellent lttr value compared to any other fm class 1 rated products of equivalent thickness. Experience the carlisle difference 2014 polyiso insulation lttr r values new long term thermal resistance values are based on astm c1289 11a effective january 1 2014 predicting product r value after five.

Firestone iso 95 gl insulation offers high energy efficiency through the r value ratings per inch versus other insulation materials. 3 rsi is the metric expression of r value m 2 k w. Membrane roof systems 2011 and the nrca roofing manual. Polyiso has a high r value per inch compared to other insulation products.

5804 en 2014 polyiso insulation lttr rvalue faq the way you insulate your building is very important here s a chart that might help. To compare different insulation products researchers have to create the exact same conditions and then measure how well the insulation performs. Used most widely in insulated concrete forms and structural insulated panels. Carlisle s tapered insulation helps promote rooftop drainage while providing excellent insulating value.

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. Expanded polystyrene eps the most versatile of the three rigid insulation options. At one inch thickness enerfoil tm achieves a 6 2 r value or a 1 08 rsi. Polyiso is the industry s premier roofing insulation.

But what does that mean and how do researchers determine r value. Highest average r value per dollar about 4 6 r per inch costs the least while meeting or exceeding all required building and energy codes. Compatible with all types of commercial roofing systems the lightweight easy to handle insulation is especially suited for direct application on fm approved and ul classified steel roof deck assemblies. 2 layers of 1 40 iso 16 0 r value vs 2 layers of 1 60 iso 18 2 r value isogard hd board 2 5 r value vs gypsum 28 total r value 18 5 vs total r value 18 48 utilizing the firestone isogard hd cover board helps reduce the thickness of the initial layers of insulation and thereby reduces the costs of the project.

Dated its r value recommendations for polyisocyanurate insulation used in roof systems. Tapered polyiso minimizes the negative.