R Value Of Rubber Roof

The following table provides typical r values and rsi for various materials these r values were taken from manufacturer technical data sheets and are the reported r values per inch of actual products.

R value of rubber roof.

The average r value for some common roof materials include. R3 r18 r21 total roof r value. Calculate percent improvement in r value. 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.

Rubber pad 1 23 roofing materials asphalt shingles 0 44 wood shingles 0 97 windows single glass 0 91 w storm 2 00 double insulating glass inch air space. R value of various materials. I calculate insulation resistance to heat loss or r percentage improvement always as relative to the original number. Here s a handy r value table that covers most types of roof coverings building insulation and a few other materials.

The map and chart show each region of the u s the subsequent zones and corresponding r values. R value is a measure of insulation s ability to resist heat traveling through it. For instance if you have a material with an r value of 12 attached to another material with an r value of 3 then both materials combined have an r value of 15. R value of building materials material r inch r thick ness fiberglass inch 3 00 1 inch 4 00 inch 6 00.

There are many websites on the internet which have imperial building material r value numbers but not so many with metric r value numbers. What are common r values. Insulation level are specified by r value. Recommended home insulation r values.

Click here to go to our calculator to understand the real r value of a ceiling system or wall system with gaps in the insulation. R value insulation chart find your zone on the map and then use the chart to determine the level of insulation you need to properly insulate your attic walls floors and crawlspaces. To learn more about r value see roof online s r value page. R value is calculated by more than just the insulation.

You should of course see the manufacturer provided technical data sheet for the r value of specific products. As we said before the r value measures the thermal resistance of a material. For a very good introductory overview article on r value see r values over at the website of. The following table is in metric form.

The higher the r value the better the thermal performance of the insulation. What r value do i need.