Cool roofs can be made of a highly reflective type of paint a sheet covering or highly reflective tiles or shingles.
Psf of a cool roof.
Rebate levels the base rebate for qualifying roofs is 0 20 per square foot the enhanced rebate is 0 30 per square foot roofing products must be tested and labeled by the cool roof rating council.
A cool roof under the same conditions could stay more than 50 f cooler and save energy and money by using less air conditioning.
Although costs will vary greatly depending on location and local circumstances cool roof coatings on a low slope roof might cost 0 75 1 50 per square foot while single ply cool roof membrane costs vary from 1 50 3 00 per square foot.
Ddc cool green roofing manual ddc preface 1 1 preface nyc department of design and construction in recent years there has been great interest in the potential of two roofing strategies cool or light colored roofs and green or planted roofs to reduce the energy consumed by individual buildings.
The solar reflectance rating represents the fraction of sunlight reflected by the roof.
Standard or dark roofs can reach temperatures of 150 f or more in the summer sun.
The thermal emittance rating represents cooling efficiency via thermal radiation.
Light colored roofs reflect between 55 and 90 percent of sunlight reaching the roof surface giving them solar reflectance ratings between 0 55 and 0 90.
Ladwp s cool roof rebates are available to single family and multi family residential customers and are part of the consumer rebate program.
Pacific gas and electric.