According to a study conducted by the U.S. In the US, your metal roof surface will stay within five degrees of the average asphalt shingle roof, even during the coldest weather. Most metal roofs will be a few degrees warmer than their competitors during the day and a few degrees cooler during the night. The coating below the asphalt shingles consistently followed the surface temperature, dropping to 15 degrees below the outside temperature.
But the temperature in the airspace below the metal roof never fell below the outside temperature. Thus, while the surface temperatures of both the metal and the shingles remained neck to neck, the airspace under the metal roof was up to 20 degrees warmer than the airspace under the asphalt shingles. Metal is very good at insulating your home because of the way the material reacts to heat. Metal is a very good thermal conductor, which means it easily transfers heat to colder objects and absorbs heat from hotter objects.
When sunlight reaches your home (even in winter), it is absorbed by the materials that make up the roof. That heat is stored when the sun goes down and fights colder temperatures at night. Metal stores this heat better than asphalt shingles and wood, a property that helps keep your home warmer at night. During the summer, the metal roof can also keep the house cool by absorbing the heat stored in the attic while reflecting the lights that hit the roof.
It's no secret that residential homeowners in the United States spend significantly more money on heating than cooling during the summer months. Metal works as an insulator that prevents cold or hot air from escaping. Therefore, energy bills are significantly reduced. In fact, the surface temperature of a metal roof tends to stay warmer than the outside temperature, whereas an asphalt tile roof can be a few degrees cooler.
A metal roof acts as an insulator and naturally reflects UV radiation from the sun. This will keep your home cool in the summer and warmer in the winter. You can increase its reflective properties by painting a metal roof in a light color, such as white. On the other hand, asphalt shingles and many other roofing materials absorb energy from the sun, heating your home and increasing your energy bills.
An exposed metal roof (steel, aluminum, copper, zinc) that does not absorb radiation from the sun will have almost exactly the same temperature as the air to which it is exposed. But understandably, many customers still have questions about residential metal roofs and how well they withstand harsh winter conditions. It may seem strange, but if you have heat sources under the roof or in the attic, you can make sure that the snow melts and breaks off the roof effectively without damaging anything on the floor. You also have several design options including metal roofs that mimic the look of asphalt shingles, clay shingles, cedar shingles, or slate.
Metal roofing has become increasingly popular with homeowners, especially now that they are available in a much wider range of styles and finishes than in the past. Reapplication every few years is pretty much the only maintenance a metal roof will need to maintain a like-new look. Be sure to install a snow guard if you opt for a metal roof to prevent ice from accumulating in the aisles that run underneath it. Metal roofs not only keep your home warm during the winter, but they also keep you cool during hot summers.
Whether you're building a new home or replacing your current roof, be sure to consider metal roofing as an option. From metal to slate, asphalt shingles and everything in between; here's what you need to know about the best roofs for cold climates. The Department of Energy requested the Oak Ridge National Laboratory to conduct a study on “The Compensation Between Solar Reflectance and Ventilation Above Metal Roofing Coating in Residential and Commercial Buildings. If you plan to stay in your home for a long time, or are looking to build a new home forever, a metal roof is one of the best outdoor investments you can make.
In fact, you can equip your metal roof with snow guards or heating cables to eliminate the risk of slipping ice and snow. Heavy snowfall may be the last straw for other types of roofs, which means emergency metal roof installations happen quite a bit during this time of year. . .