R value of various materials.
R value of tpo roof membrane.
A single ply roofing system tpo or epdm has a 0 24 0 33 r value with a typical installed thickness level therefore you ll need considerable thickness of insulation to get you to an r 30.
Tpo roof system life expectancy 7 to 20 years.
Here s a handy r value table that covers most types of roof coverings building insulation and a few other materials.
A recent study of everguard tpo roofs installed between 8 and 16 years ago found they all performed above astm standards for newly manufactured tpo.
Polyiso is a great choice for insulation due to its price and performance and with an r value of 5 5 you would need to install almost 6 inches to hit.
Across the us homeowners who installed a tpo roof membrane report spending about 5 6 75 per square foot.
This is equivalent to 8 000 10 800 keep in mind that your total cost may be higher or lower depending on a number of important factors including.
Roofing m em brane provides the benefits of all three m aterials.
Dim ensions and w idths are nom inal values and are subject to norm al m anufacturing packaging tolerance and variation c olors f u ll r oll s ize f u ll r oll w eigh t h alf r oll s ize h alf r oll w eigh t.
On a 1 600 sq ft.
However problems with the membrane formulation are a source of many issues.
Gaf analyzed membrane samples from roofs across the us and studied thickness over scrim surface cracking and the ability to repair aging tpo membranes.
All data represents tested values.
Supplemental testing physical properties astm test method standard for astm d 6878 min jm tpo 60 mil result dynamic puncture d 5635 n a pass 25 joules static puncture d 5602 n a pass 44 lb 20 kg impact resistance of bituminous roofing systems d 3746 n a pass minor indentations reflectance.
A recent study of everguard tpo roofs installed between 8 and 16 years ago found they all performed above astm standards for newly manufactured tpo.
For a very good introductory overview article on r value see r values over at the website of.
Thermoplastic polyolefin tpo single ply roofing membranes are among the fastest growing commercial roofing products and have gained praise across the industry for their many performance and installation advantages.
You should of course see the manufacturer provided technical data sheet for the r value of specific products.
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.
Like pvc roofs tpo systems also use the hot air welded seams technology to make the roof durable and leak free.
Gaf analyzed membrane samples from roofs across the us and studied thickness over scrim surface cracking and the ability to repair aging tpo membranes.
Always check with your local code authority.
As demand increases for heat reflective and energy efficient roofing systems you can rely on tpo single ply roofing membranes to.
