How Cool Roofs Work

Rooftop gardens shade the buildings below from direct sunlight and reduce both surface.

How cool roofs work.

Benefits of cool roofs. Cool roofs are designed to lower the temperature of your home in summer months making you more comfortable and potentially reducing your energy bill. This high reflectivity reduces heat transfer and helps cool your building. Low and steep.

These roofs can be made using highly reflective paints or highly reflective tiles or shingles or with sheet coverings. How cool roofs work traditional dark colored roofing ma terials absorb sunlight making them warm in the sun and increasing the need for air conditioning. Cool roofs reduce the thermal radiation of heat into the atmosphere convection of heat into outside air and the conduction of heat into the building. Cool roofs are a type of roofing system designed with a high ability to reflect sunlight whether visible infrared or ultraviolet.

These two properties help roofs absorb less heat and stay up to 50 degrees to 60 degrees cooler than conventional rooftops during the peak of summer. A cool roof prevents heat absorption by reflecting the sun s heat and then emitting its radiation back into the atmosphere. On the other hand cool roofs stay cooler in the sun and transmit less heat into the building. Both of these properties are measured on a scale of 0 to 1 0 100 where the higher values indicate how cool the roof is bound to be.

It also slows the formation of ground level ozone and smog. Get a little misty eyed. Ballasted roofing systems are roofs in which a membrane is laid on the roof deck and held in place by the. Types of roofs and how they can be made cool low sloped roofs.

A cool roof is a roofing system that delivers higher solar reflectance the ability to reflect the visible infrared and ultraviolet wavelengths of the sun reducing heat transfer to the building and higher thermal emittance the ability to radiate absorbed or non reflected solar energy than standard designed roofing products. Single ply membranes are pre fabricated sheets rolled onto the roof and attached with mechanical. 10 ways to cool your roof 1. Shingle roofs consist of overlapping panels made from a variety of materials such as fiberglass.

Traditional dark colored roofing materials strongly absorb heat from sunlight making them warm in the sun and heating the building. Cool roofs achieve this by reflecting some of the infrared ir light from the sun. Cool roofs reflect more sunlight and absorb less heat than traditional roofs. White or special cool color roofs absorb less sunlight stay cooler in the sun and transmit less heat into the building.