Heat Reflective Material For Roof

Thermal emittance refers to a roof s ability to release absorbed heat.

Heat reflective material for roof.

A radiant barrier reduces the radiant heat transfer from the underside of the roof to the other surfaces in the attic. The most well known type of reflective surface is the cool roof. Reflective surfaces are a form of geoengineering. Cool protective coatings can be reapplied repeatedly every 10 to 15 years and will reduce and may eliminate the need for expensive tear offs.

Building owners and roofing contractors have used cool roofing products for more than 20 years on commercial industrial and residential buildings. Retrofit the roof with specialized heat reflective material. Solar reflective shingles are designed specifically to reduce the absorption of the suns infrared radiation by reflecting ir rays off the surface of the roof thus not allowing the heat to be transferred to the interior of the structure i e. Reflective roof coatings also known as albedo coatings are products applied to roofs to reduce solar heat especially in areas with hot sunny weather for a good part of the year.

Cool paint is a heat reflective paint and this paint has been designed to reflect more sunlight and absorb less heat than a standard roof. Reflective surfaces can deliver high solar reflectance the ability to reflect the visible infrared and ultraviolet wavelengths of the sun reducing heat transfer to the surface and high thermal emittance the ability to radiate absorbed or non reflected solar energy. The hot roof material then radiates its gained heat energy onto the cooler attic surfaces including the air ducts and the attic floor. Re cover the roof with a new waterproofing surface such as tile coating replace the roof with a cool one.

If your roof is in poor condition or near the end of its life it is usually best to re cover replace or retrofit the roof. Together these properties help roofs to absorb less heat and stay up to 50 60 f 28 33 c cooler than conventional materials during peak summer weather. A high thermal emittance is preferable in warmer areas so that the heat is not held within the roof and therefore the building. Its application reduces roof temperature and correspondingly reduces room temperature.

Meanwhile conventional roofing materials only reflect a mere 5 to 15 of this energy. Because they can reduce surface temperatures by up to 80 f about 45 c these products also have a big impact on cooling costs. Initial material costs are comparable with traditional roofing materials some cool roof products cost less than traditional materials some cost up to 20 more. By reducing the amount of this heat transfer solar reflective shingles and.

The attic under the roof. In the case of air conditioned spaces the power consumption is reduced due to the lowered temperature gradient across the slab.