R Value Of Clay Roof Tiles

Here s a handy r value table that covers most types of roof coverings building insulation and a few other materials.

R value of clay roof tiles.

Concrete clay roof tiles. The clay tiles all jumped from r. Roof tiles have a service life of 150 years. The cost of clay tiles can easily be 10 20 per square foot installed.

Structural tile r value an 8 thick double cell hollow clay tile has an r value of 1 85 according to my ancient hvac text book. Stud walls see either airspace wall or insulation. There are many websites on the internet which have imperial building material r value numbers but not so many with metric r value numbers. As a result roofs covered with roof tiles require very little maintenance and guarantee a constant quality and beauty.

You should of course see the manufacturer provided technical data sheet for the r value of specific products. When you read those the difference in price will come as no surprise to you. Roof tiles are solid and thus especially robust and dimensionally stable. Cedar shakes shingles.

Straw board faced with paper 320kg m3 50mm thick. This is important for assessing the risk of mold in some materials. Depending on your region and the product you choose expect to pay between 12 50 and 25 00 per square foot for a ceramic clay tile roof installed. Count on a tile roof to cost two times as much as a wood shake roof and four times more than asphalt shingles.

Absorption is the tendency of the insulation to absorb water in percent by weight. Roof tile clay or concrete 1922kg m3. 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. Forashrae zone 3 atlanta georgia the high profile concrete and clay tiles espana barcelona 900 corona tapered classic s and mission s all showed an almost tripling of the effective annual thermal resistance with the addition of the low emittance paint.

It is true that air is a poor conductor of heat but in a vertical air space like in a wall warm air rises on the inside surface and cool air drops on the outside surface creating convection which transfers heat. Flame spread is a measure of fire resistance of the material. These numbers are most useful to compare one insulating material to another. However the material has a lot of different advantages which is why it s still the preferred material between the two.

R value is compressed value. They are insensitive to environmental influences such as heat cold and frost. Sand dry 100mm. R value of various materials.

For a very good introductory overview article on r value see r values over at the website of.