R Value Of Rubber Roofing

R value of building materials material r inch r thick ness fiberglass inch 3 00 1 inch 4 00 inch 6 00.

R value of rubber roofing.

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. For example two inches of extruded polystyrene with an r value of 11 has an rsi of 1. There are many websites on the internet which have imperial building material r value numbers but not so many with metric r value numbers. Know exactly how much you need with our project calculators.

As we said before the r value measures the thermal resistance of a material. The higher the r value the greater the insulation performance. Coverage white fiberglass mineral surfaced cap roll roofing. R value measures how well certain building insulation materials can resist heat.

Gaf liberty 3 ft. 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. The average cost of extruded polystyrene insulation is 0 42 sq ft. Additional r value for a masonry wall constructed using these materials needs to add the insulating value of additional wall components typically included such as 1 solid foam polyisocyanurate r 8 extruded polystyrene r 5 expanded polystyrene r 4 or 1 of perlite r 2 7 and for an exterior air film winter no wind r 0 17 an interior.

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. 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. Eps can be used for ground contact and does not retain water over time. For a 1 in thick panel.

R value is used in the united states. See the department of energy s doe ranges for recommended levels of insulation below. To convert rsi to r value multiply the rsi by 5 67826. To convert the r value of a specific thickness of a material to rsi divide the r value by 5 67826.

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. Rsi r value système international is the metric equivalent. When determining how much insulation you need don t guesstimate calculate. Xps is semipermeable with a perm rating of 1.

The average r value is r 5. Ft sbs self adhering cap sheet roll for low slope roofing in slate model 3730750 101 02 roll 101 02 roll free delivery.