Pvc Roofing R Value

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.

Pvc roofing r value.

High r value 2 9 r. Easy three step installation to reduce the chance of application errors. Rsi r value système international is the metric equivalent. Top ply contains cool roof pigments uv stabilizers and other components to extend the.

For a very good introductory overview article on r value see r values over at the website of. Insulation is important because it saves energy by reducing heat loss. Most commonly used insulation is iso or eps foam board. To convert the r value of a specific thickness of a material to rsi divide the r value by 5 67826.

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. R value of various materials. Both of these insulation boards carry an r value that ranges from 4 r to 6 r per 1 inch of insulation thickness. Duro last has been successful since the beginning by providing our customers with unmatched service and expertise in the roofing industry.

Heat welded seams for greater reliability. As illustrated in the table above cellular pvc is a better insulator than white pine or rigid pvc i e. 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.

Allows easy and efficient scoring cutting and snapping which permits fast tight fabrication and all in a low dust environment. Both types have an r value ranging from 4 r to 6 r per 1 inch of insulation thickness. To convert rsi to r value multiply the rsi by 5 67826. Has more than two times the r value of wood fiber and more than four times the r value of gypsum boards.

High reflectivity for greater energy savings. Here s a handy r value table that covers most types of roof coverings building insulation and a few other materials. For example two inches of extruded polystyrene with an r value of 11 has an rsi of 1. Offers over three decades of proven pvc roof system performance with billions of square feet of membrane installed across north america.

Can have an effect on the u and r values shown above. 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.