White Tpo Roof Solar Reflectance

It is defined so that a standard black reflectance 0 05 emittance 0 90 is 0 and a standard white reflectance 0 80 emittance 0 90 is 100.

White tpo roof solar reflectance.

Solar reflectance index sri is calculated per astm e 1980. White initial 95 3 yr. Aged 75 gray initial 39 3 yr. Comparing modeled energy costs for a white highly reflective roof membrane such as gaf everguard tpo versus those for a dark absorptive membrane such as epdm the following annual savings are projected for the 125 000 sq ft.

But where the membrane is fully exposed rain has kept the membrane white and reflective. Tile roofs can be made of clay slate or concrete. The membrane can be used for new roof installation or as a replacement roof. Install the ultraply tpo roofing system in accordance with current firestone ultraply tpo specifications details and.

Firestone ultraply tpo is a flexible thermoplastic polyolefin roofing membrane that is produced with polyester weft. White thermoplastic membrane roofs pvc and tpo are inherently reflective achieving some of the highest reflectance and emittance measurements of which roofing materials are capable. The sri is a measure of the roof s ability to reject solar heat as shown by a small temperature rise. Peak advantage guarantee information product guarantee term jm tpo 60 mil 5 10 15 or 20 years codes and approvals.

The sr value is a number from 0 to 1 0. Roofkit 10 by 100 foot white tpo reinforced membrane is 45 mil thick and is for use on flat roof surfaces. How they can be made cool. Solar reflectivity or reflectance is the ability of a material to reflect solar energy from its surface back into the atmosphere.

A value of 0 indicates that the material absorbs all solar energy and a value of 1 0 indicates total reflectance. Citation needed a roof made of white thermoplastic for example can reflect 80 percent or more of the sun s rays and emit at least 70 of the solar radiation that the roof absorbs. Clearly based on their reflectivity ease of maintenance and longevity white tpo membranes are the best choice for these applications. Tiles can be glazed to provide waterproofing or coated to provide customized colors and surface properties.

Converting from a dark to a mid reflectance roof e g. A recent study of everguard tpo roofs installed between 8 and 16 years ago found they all performed above astm standards for newly manufactured tpo. The roof has never been cleaned as can be seen by the dirt under the panels. Solar reflectivity r solar reflectance index sri by color.

Some are naturally reflective enough to achieve cool roof standards and surface treatments can transform tiles with low solar reflectance into cool roof tiles. Aged 37 recycled content post consumer 0 post industrial 5 the leed solar reflectance index sri is calculated per astm e1980. This membrane is ideal for commercial projects or diy projects such as sunrooms carports breezeways porches etc.