Value Of Haivng A White Coated Roof

Some of them are also safe for pets and children.

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. It has a solar reflectance value of 86 a thermal emittance value of 93 and a solar reflective index of 108 overall. Gaf united coatings 5 gallon silicone reflective roof coating 20 year limited warranty item 1051026. The urban heat island can be a killer.

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. 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. The best roof coating products are also safe and non toxic.

The infrared image on the right shows 79 c 174 f on the uncoated black section of the modified bitumen roof. They won t damage the rv roof with unnecessary chemicals. Other places like california have updated building codes to promote cool roofs which are seen as an important. The coated white section is 26 c 79 f.

Some are also water based coatings that do not have nasty strong odors on them. The city of new york has recently coated more than 10 million sq ft of rooftops white. 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. 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.

Oleson found that even if every city building roof and stretch of urban pavement in the world were painted white it would only delay global warming by 11 years. But its potential value in ameliorating the most severe consequences of excess heat in cities could be life saving.