Standing Seam Metal Roof R Value

Lttr is a 15 year time weighted method based on customer s insulation needs.

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

The insulated metal faced composite panel must be made from. The use of berridge manufacturing metal. Contemporary metal roofing has a 50 year rated. 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. Colonial seam continuous standing seam metal roof panel with an integral seam. You should of course see the manufacturer provided technical data sheet for the r value of specific products. 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 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. The cfr exterior profile has a 2 inch high standing seam with a mesa profile. R value of various materials. Incorporates both solar reflectance and thermal emissivity in a single value.

Available values range from 5 6 to 27 3. Standing seam systems.