How Cool Roofing Works

Whereas darker traditional roofing materials absorb sunlight the reflective surfaces of a cool roof reflect it away.

How cool roofing works.

Cool roof shingles and tiles. A cool roof is one that has been designed to reflect more sunlight and absorb less heat than a standard roof. Cool paint is made of highly reflective type of paint by emissivity aqueous coating based on acrylic resins. The heavy mass of cool roof shingles and tiles can also provide some degree of thermal protection by absorbing and blocking heat during the day and releasing heat throughout the night.

On top of the rafters your roof has plywood followed by sheathing a material that s designed to protect your home from moisture. Roof temperature is rated via solar reflectance and thermal emittance with ratings ranging between 0 and 1. The coolness of a roof is determined by two properties of roofing materials and their combined effects on temperature. Reflective metal roofing may also cool high slope roofs.

It is an eco friendly paint which upon application to cementaceous asbestos or ms roofing increases the emissivity of that surface which results in reflection of heat energy. Solar reflectance ability to reflect sunlight. Today there are many options for roofing underlayment materials rubberized asphalt to organic fiberglass to synthetic. While the term cool roof is sometimes used to describe any roofing surface that is cooler than a standard rooftop green certification programs such as leed energy star the u s.

Thermal emittance ability to cool down by emitting heat that is absorbed. Cool roofs achieve this by reflecting some of the infrared ir light from the sun. Cool roofs are designed to lower the temperature of your home in summer months making you more comfortable and potentially reducing your energy bill. On the other hand cool roofs stay cooler in the sun and transmit less heat into the building.

How your roof works your roof is not just made up of a few shingles. The right underlayment for your roof will keep moisture cold weather and stifling summer air out giving your roof a longer life. It begins with the rafters and continues on in layers of protection that prevent water and the wind from damaging your home. This results in lower absorption of solar heat and a cooler roof.

Nearly any type of building can benefit from a cool roof but consider the climate and other factors before deciding to install one. Cool roofs can be made of a highly reflective type of paint a sheet covering or highly reflective tiles or shingles.