Tpo Roof Insulation R Value

Thickness inches r value in i p imperial rsi r value in metric 0 5.

Tpo roof insulation r value.

R value of roofing materials and building insulation. 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. R value chart for enerfoil tm rigid foam faced insulation. 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 the r 30 mark.

The higher the r value the greater the insulation performance. R value of various materials. Know exactly how much you need with our project calculators. When determining how much insulation you need don t guesstimate calculate.

R value per inch ft f hr btu rsi per millimeter k m w r value for typical installed thickness not per inch source. Protector hd allows easy efficient scoring cutting and snapping which permits fast tight fabrication and all in a low dust environment. This also means easy hoisting staging and maneuvering around the roof. Here s a handy r value table that covers most types of roof coverings building insulation and a few other materials.

National roofing contractors association. For a very good introductory overview article on r value see r values over at the website of. High r value 2 5 r. Typical recommendations for exterior walls are r 13 to r 23 while r 30 r 38 and r 49 are common for ceilings and attic spaces.

Depending on where you live and the part of your home you re insulating walls crawlspace attic etc you ll need a different r value. West roofing systems installs single ply membrane roof. Conditioned per atsm c1289 test method astm c5181 2. Built up roof membrane gravel surfaced membrane and gravel only 0 33.

Tpo roofing costs for an average 20 000 sq. R value measures how well certain building insulation materials can resist heat.