Value Of Haivng A White Coated Roof

Roof coatings can add 25 years to the service life of a roof and reduce the amount of discarded roofing materials that end up in landfills.

Value of haivng a white coated roof.

Gaf united coatings 5 gallon silicone reflective roof coating 20 year limited warranty item 1051026. The best roof coating products are also safe and non toxic. The best roof coating products are also non polluting for the environment. Generally white in color or with white surfacing these membranes reduce the solar radiation collected by roofing surfaces which lowers the roof surface contribution to the energy used to condition air and to the local environment.

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. Other places like california have updated building codes to promote cool roofs which are seen as an important. The infrared image on the right shows 79 c 174 f on the uncoated black section of the modified bitumen roof. The city of new york has recently coated more than 10 million sq ft of rooftops white.

The coated white section is 26 c 79 f. But its potential value in ameliorating the most severe consequences of excess heat in cities could be life saving. Surecoat systems white roof coating is 10 426 dry mils thick per gallon per 100 square feet 5 10 times thicker than roof paint and 2 3 times thicker than most other coatings. A perfect sri is approximately 122 the value for a perfect mirror which absorbs no sunlight and has very low emissivity.

On a practical level white roofs in colder climates are more prone to developing condensation which leads to lower wind resistance lower insulation values and the formation of mold. It has a solar reflectance value of 86 a thermal emittance value of 93 and a solar reflective index of 108 overall. Contemporary metal roofing has a 50 year rated. The urban heat island can be a killer.

They won t damage the rv roof with unnecessary chemicals. 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.