If history is teaching us anything we can expect another hot summer and fall. Which of course means potentially sky-high electric bills in the effort to keep our homes and businesses cool.
Will that thought in mind, I thought we would spend some time talking about just how effective a metal roof is at being the most energy efficient roofing material.
It’s Good For The Pocketbook
A metal roof can save your home up to 40% in air conditioning costs as well as provide excellent insulation during the winter months. With a metal roof optimized for energy efficiency, you can expect to enjoy long-term cost savings on your energy bills while reducing your environmental impact.
Your basic, unpainted metal roof will reflect more solar radiation than an asphalt shingle roof, which typically absorbs and holds in the heat. With a re-painted or granular coated metal roofing systems, not only reflect solar energy but also cool your home by re-emitting most of what solar radiation is absorbed.
This 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.
Cool Metal Roofing
The most effective energy-saving finish for metal roofing is what is commonly referred to as cool-metal roofing. It’s a highly reflective coating uses cool pigments (colors) in the paint to increase solar reflectance and lower the surface temperature of the roof.
Cool-metal roofing systems help reduce the energy need of air-conditioned buildings and makes unconditioned buildings more comfortable. Many cool-metal roofing systems are also ENERGY STARⓇ certified and may qualify for tax incentives.
Due to metal roofing’s incredibly efficient solar reflectance and thermal (heat) emittance, metal is the ideal roofing material for the construction of a net-zero energy home. Metal roofing is also Passive House ready in several key areas:
- Metal roofs protect their insulation backup better which ensures strong long-term thermal resistance.
- Passive House Certification requires airtight construction which is one of the benefits of the inherent air barrier quality of metal panels.
- Metal roofing is a perfect candidate for high-efficiency windows and skylights which maintain certification qualities.
So as you can see, there are many factors that go into why metal roofing is the most effective energy saving material. The bottom line is, it’s a roof that will go a long way to pay for itself over time.
As always, if you have any questions about metal roofs or any type of roofing material please give us at DYMI Construction a call. We’re always happy to answer any questions or concerns you may have.