Pvc Roof Membrane R Value

Currently cellular foams with r values of 5 to 6 per inch are used whereas the earlier non cellular wood fiber perlite and glass fiber insulations were closer to 3.

Pvc roof membrane r value.

Rsi r value système international is the metric equivalent. The american society of testing and materials astm requires a roofing membrane to have a minimum breaking strength of 200 pounds per inch. Mechanically attached installation uses heavy duty screws and barbed plates to hold the membrane down tightly and is not affected by possible iso de lamination. Learn more about our 55 years of experience in the roofing industry.

All roofing areas flashings penetrations and equipment shall be included in the work under this section. R value is used in the united states. Pvc roofs are specifically engineered for strength ensuring the membrane s long service life. The membrane is attached using 12 o c.

Easy three step installation to reduce the chance of application errors. For example two inches of extruded polystyrene with an r value of 11 has an rsi of 1. Thinner is definitely an advantage. Single ply roofing information.

Pvc roofing membranes far surpass this standard all having a minimum breaking strength of 350 pounds per inch. Thermoplastic membrane pvc roofing added 11 2012 07 54 19 1 thermal and moisture protection guide specification section 07 54 19 single ply pvc reroofing. Sika sarnafil is a leading manufacturer of pvc roofing and waterproofing systems in the usa. Both types have an r value ranging from 4 r to 6 r per 1 inch of insulation thickness.

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. Heat welded seams for greater reliability. Increased chemical resistance compared to other roofing technologies. To convert the r value of a specific thickness of a material to rsi divide the r value by 5 67826.

Pattern with perimeter sheets attached 6 o c. Guarantees are available up to 20 years when using everguard pvc 60 mil membrane. Our high performing single ply roofing solutions offer unrivaled reliability and longevity. High reflectivity for greater energy savings.

Part 1 general.