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 concrete roof tiles.
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.
There are many websites on the internet which have imperial building material r value numbers but not so many with metric r value numbers.
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.
Energy and the environment.
John wiley sons inc 2006.
R value of various materials.
R value is compressed value thermomass concrete insulation concrete panels 150 conc 50mm xps foam 60 conc thermomass concrete insulation concrete panels 150 conc 70mm xps foam 60 conc tile clay roofing 19mm.
Tile slate 8mm.
The following table is in metric form.
Timber floor boards kiln dried hardwood 19mm.
Here s a handy r value table that covers most types of roof coverings building insulation and a few other materials.
You should of course see the manufacturer provided technical data sheet for the r value of specific products.
A metal colorbond roof s r value is 0 00 while a concrete tile roof s r value is 0 02.
Thermal break foam strips gasket 10mm thick uncompressed.