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Does metal roofing help save on heating and cooling costs?

Metal Roof

When you're considering making changes to your home or business, changes in heating and cooling costs can be a very important deciding factor. But did you know that the type of roof you select can make a big difference on your utility bills? In this post, we'll discuss how metal roofing's inherent properties and supplemental systems can do an amazing job of reducing your utility bill while keeping your structure comfortable.

 Exterior reflection of heat and light

A light-colored metal roof is by nature reflective. Instead of soaking in the heat as asphalt shingles do, metal roofing reflects that heat back into the air, allowing it to stay cooler. At the same time, it's also reflecting light away from your building, preventing the light energy from heating up the shingles, much like the science experiment comparing temperatures of dark and light objects placed in the sun. This means that your cooling bill is significantly lower in a metal-roofed building than a comparable asphalt-shingled building.

Interior reflection of heat

Metal roofing isn't only reflective on the outside - it's also reflective on the inside. When you're heating a building, would you rather that the heat simply transfer through the roofing materials to the outside or would you rather it be reflected back into the building to help retain the heat? There have been a number of new insulation and radiant floor heating products developed over the past few years that are based on reflecting heat back into a structure, but metal roofing has been providing that same effect for many decades.

Minimizing heat gain

Guys putting metal roofing onBy using a few techniques, you can also minimize heat gain from a metal roof. If you place spacers between the metal and your building, it becomes much harder for heat to transfer from your roof into your building. Metal roofing also integrates well with insulated roofing systems, making it the perfect material when you're working on a project that requires green certifications, such as the LEED certification process. Choosing a color that is available in a reflective surface helps maximize the amount of solar heat and light that is directed away from your structure. By comparison, an asphalt roof is typically laid directly on the structure, allowing any heat it picks up to transfer into your attic or loft, making it unbearably uncomfortable.

Easily ventilated

Because metal roofing has been used in warm climates for so many years, there are a number of ventilation systems that are easy to incorporate in your design. By allowing air to circulate between the roof and the building proper, you're providing an escape for hot air at the top while naturally drawing in cool air at the bottom as the convection cycle continues. This means that over all, your roof stays much cooler than even a well-ventilated asphalt shingle roofing system can accomplish.

Lack of thermal mass

Three tabbed architectural shingledr roofAsphalt shingles are created from a heavy, dense material. Much like large stone or log structures, they can take a very long time to heat up or cool down because they hold heat on your roof and in your attic. This essentially creates an unintended heat sink on the top of your home or building while making it take much longer to heat up or cool down. By comparison, metal roofing has a very low thermal mass, meaning that it doesn't have an inherent ability to hold heat or cold that radiates back into your structure and makes it easier for your building to be heated or cooled effectively awhile requiring less energy.

Now that you've had the opportunity to learn about the financial and environmental benefits a metal roof can bring to your project, it's time to put that information into action. At Wallboard Supply Company, we believe in providing strong support for your project. 

Contact us today for more details about our metal roofing supplies, to get a quote or to schedule a delivery that keeps you on the job site instead of running to the store.


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Wallboard Supply Company is a third generation, family run business that has been serving New England's building needs since 1970. Bob Filion started the company with a commitment to provide quality drywall and finishing products with unmatched customer service. The company has grown over the years, expanding its' product range, but never wavering from its' core values.