Standing Seam Metal Roof R Value

Thermal performance is measured using derivative of the r value known as the long term thermal resistance lttr method.

Standing seam metal roof r value.

Contemporary metal roofing has a 50 year rated. Clipless one piece positive locking standing seam panel that provides a timeless roof appearance. However it s not always the highest price as metal shingles and other stamped metal materials tend to come in at a higher price even. The cfr exterior profile has a 2 inch high standing seam with a mesa profile.

Incorporates both solar reflectance and thermal emissivity in a single value. 18 roofing standing seam on insulated metal faced panels skin must provide a minimum pull out value of 50kn for the standing seam fixing clip dynamic testing method. R value of various materials. The per square foot cost of a premium metal roof is 9 58 with a comparable asphalt shingled roof s march 2012 per square foot cost being 3 41.

Available values range from 5 6 to 27 3. Higher cost one of the most significant drawbacks to standing seam metal roofing is the fact that is can be more expensive when compared to other metal roofing types especially exposed fastener systems. The insulated metal faced composite panel must be made from. Sri measures the roof s ability to reject solar heat defined such that a standard black reflectance 0 05 emittance 0 90 is 0 and a standard white reflectance 0 80 emittance 0 90 is 100.

The cfr panel is attached to a building structure with concealed clips to provide continuous insulation and eliminate thermal bridges providing unsurpassed weathertight performance. Standing seam systems. For a very good introductory overview article on r value see r values over at the website of. The interior profile is also a stucco embossed mesa pattern.

Here s a handy r value table that covers most types of roof coverings building insulation and a few other materials. Lttr is a 15 year time weighted method based on customer s insulation needs.