Rubber Roof Membrane R Value

For a 1 in thick panel.

Rubber roof membrane r value.

More buying choices 15 95 3 new offers 20 x 25 firestone rubbergard 45 mil epdm roofing rubber. Please note that the r values for roof membranes shingles tiles air films and roof deck materials might or might not be permitted by your local code to be included when total roof assembly r value is being calculated for the purpose of satisfying energy code requirements. The average cost of extruded polystyrene insulation is 0 42 sq ft. The most popular flat roofing membranes installed on homes across us are.

Underneath the membrane there is usually a separation barrier and or some sort of insulation board. For white and black membranes the table outlines the necessary adjustments in r values to maintain a roof assembly s energy performance. Most common insulation is iso or eps foam board. Epdm rubber pvc and tpo.

Currently the average cost of replacing a flat roof is 7 500 11 000 for a 1 600 sq ft. Quite the contrary in colder regions ashrae zones 4 through 8. Here s a handy r value table that covers most types of roof coverings building insulation and a few other materials. R value of various materials.

The average r value is r 5. Rubber roofing commonly comes in a roll or sheet often referred to as a membrane. The architect resources page aims to help architects and specifiers make informed decisions about what roofing system is best for their specs. Black epdm rubber roofing membrane nr non reinforced ul class a fire rated kln clean talc free 60 mil 10 x 100 foot roll.

For example while optimum performance using a black membrane the assembly must utilize insulation with an r value of 29. Carlisle syntec strives to provide resources for all professionals in the commercial roofing space. Eps can be used for ground contact and does not retain water over time. Both types have an r value ranging from 4 r to 6 r per 1 inch of insulation thickness.

Xps is semipermeable with a perm rating of 1. 5 0 out of. Class a customs rv superflex 8 5 foot wide rv rubber roofing membrane by linear foot 8 5 foot or 102 inches wide. For a very good introductory overview article on r value see r values over at the website of.

Expanded polystyrene eps with the highest r value per dollar eps is used for roof wall and floor insulation. Here are their updated material and installation costs we will also discuss features and top manufacturers so you can select the best option for your roof. You should of course see the manufacturer provided technical data sheet for the r value of specific products.