Pvc Roofing R Value

Heat welded seams for greater reliability.

Pvc roofing r value.

As illustrated in the table above cellular pvc is a better insulator than white pine or rigid pvc i e. Sarnathin 50 utilizes sika s proven sarnafil roofing membrane along with r 50 systems rich e board a 1 5 inch thick vacuum sealed insulation with a protective covering on both sides and an r value resistance to heat flow of 50. Prior to installing the pvc roofing membrane itself typically some type of insulation board is put in. Material u value r value white pine 0 78 1 3 rigid pvc 1 02 1 45 0 69 0 98 cellular pvc 0 48 2 1 aluminum 1642 00061 density moisture content etc.

Here s a handy r value table that covers most types of roof coverings building insulation and a few other materials. Can have an effect on the u and r values shown above. Duro last has been successful since the beginning by providing our customers with unmatched service and expertise in the roofing industry. High r value 2 9 r.

High reflectivity for greater energy savings. For example two inches of extruded polystyrene with an r value of 11 has an rsi of 1. Guarantees are available up to 20 years when using everguard pvc 60 mil membrane. Rsi r value système international is the metric equivalent.

Most commonly used insulation is iso or eps foam board. Has more than two times the r value of wood fiber and more than four times the r value of gypsum boards. R value is used in the united states. Both types have an r value ranging from 4 r to 6 r per 1 inch of insulation thickness.

Offers over three decades of proven pvc roof system performance with billions of square feet of membrane installed across north america. Additional r value for a masonry wall constructed using these materials needs to add the insulating value of additional wall components typically included such as 1 solid foam polyisocyanurate r 8 extruded polystyrene r 5 expanded polystyrene r 4 or 1 of perlite r 2 7 and for an exterior air film winter no wind r 0 17 an interior. Insulation is important because it saves energy by reducing heat loss. Pvc polyvinyl chloride a thermoplastic membrane utilizing a reinforcement scrim between the two plies of equal thickness ib roof only.

To convert rsi to r value multiply the rsi by 5 67826. Allows easy and efficient scoring cutting and snapping which permits fast tight fabrication and all in a low dust environment. You should of course see the manufacturer provided technical data sheet for the r value of specific products. Increased chemical resistance compared to other roofing technologies.

R value of various materials. To convert the r value of a specific thickness of a material to rsi divide the r value by 5 67826. For a very good introductory overview article on r value see r values over at the website of.