Metal Roof Color And Energy Efficiency

You will want to consider the color of your roofing materials for more than aesthetic value.

Metal roof color and energy efficiency.

Alternatively you can apply cool reflective coatings. Painting a metal roof can increase its solar reflectance and thermal emittance allowing it to achieve cool roof status. Others include cool color tiles and green roofs which consist of a vegetative layer grown on a rooftop. Cool metal roofs are one of several energy efficient roofing systems on the market.

Reflectance in relation to metal roofing refers to uv and infrared light rays being reflected from the roof surface. Mar 11 2020 metal roof color and energy efficiency and metal roofing burnished slate. In fact a high end kynar 500 white metal roof is energy star rated and classified as a cool roof by the cool roof rating council. Unpainted metals are typically good solar reflectors but poor thermal emitters so they rarely satisfy low slope cool roof requirements.

We believe energy efficiency including heat island measures is moving into the market to a certain extent just by the natural market forces akbari says. Such a roof can be reasonably expected to be some 50 to 60 degrees cooler than a darker color asphalt shingles roof. Lighter color roofs reflect sun s heat much better than darker colors. A highly reflective and highly emissive painted or granular coated metal roof is optimal for reducing energy consumption and can actually re emit up to 90 of absorbed solar radiation.

Lighter roof colors will reflect more of the sun s energy while darker colors tend to absorb heat which can then transfer to attics where it can seep down into the home.