Pvc Roof Membrane R Value

To convert the r value of a specific thickness of a material to rsi divide the r value by 5 67826.

Pvc roof membrane r value.

Heat welded seams for greater reliability. Roof membrane available in 40 50 and 60 mil thickness. Duro last 50 mil membrane is manufactured with 28 mil of thickness on the top performance layer far exceeding industry standards as well as competitor systems with equal and even greater mil values. Easy three step installation to reduce the chance of application errors.

Our high performing single ply roofing solutions offer unrivaled reliability and longevity. High reflectivity for greater energy savings. Guarantees are available up to 20 years when using everguard pvc 60 mil membrane. Part 1 general.

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. 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. Pvc roofs are specifically engineered for strength ensuring the membrane s long service life.

Pvc roofing membranes far surpass this standard all having a minimum breaking strength of 350 pounds per inch. The american society of testing and materials astm requires a roofing membrane to have a minimum breaking strength of 200 pounds per inch. Increased chemical resistance compared to other roofing technologies. Single ply roofing information.

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. For example two inches of extruded polystyrene with an r value of 11 has an rsi of 1. 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. Thinner is definitely an advantage.

Rsi r value système international is the metric equivalent. To convert rsi to r value multiply the rsi by 5 67826. All roofing areas flashings penetrations and equipment shall be included in the work under this section. Sika sarnafil is a leading manufacturer of pvc roofing and waterproofing systems in the usa.

The membrane is attached using 12 o c.