Roofs With A Solar Reflectanace Of 4 Or Greater

Ul evaluates solar reflectance roof covering materials using requirements developed by many sources.

Roofs with a solar reflectanace of 4 or greater.

A roof plays a critical role for your home. For example a good white coating with a solar reflectance of 0 8 typically has a visible reflectance of about 0 9. Ul testing and certifications. Usually the visible reflectance is correlated with the solar reflectance but the two quantities are not equal.

This is also tied to thermal resistance of a roof as well. Both properties are measured individually from 0 to 1 0 with 1 0 being the material with the best performance. The effectiveness of a cool roof is measured by solar reflectance and thermal emittance. It helps protect it from the elements and impacts its overall exterior look and curb appeal further an asphalt shingle roof can potentially deliver energy saving benefits when cool asphalt shingles are installed.

In a study by shiao and kalkanoglu during the. As such it plays an equal if not greater role in defining what s a truly energy efficient roof. These shingles are engineered to have higher solar reflectance and thermal emittance properties that can. One of the biggest factors in energy efficiency in bryan roofing is the ability of the roofing material to reflect solar energy.

As temperatures warm around the brazos valley many home owners take the opportunity to reroof their old roof for a roofing system that is more energy efficient. Just like reflectance the emittance of the roof is measured on a scale of 0 to 1 with 1 being the highest. The attic under the roof.