Choosing A Metal Roof Over Asphalt Shingles

The most common roofing material on the market is asphalt shingles. You might think that this is because asphalt shingles are superior to other roofing materials. The truth is that asphalt shingles are only superior to other roofing materials in one area: cost. However, just because you pay less initially for asphalt shingles does not mean they are the least expensive choice over the long run. In fact, metal roofs are a superior choice to asphalt shingles for many reasons. 


You can expect asphalt shingles to last for between fifteen and twenty years. While this might sound like a decent amount of time, you have to see how it compares to the lifespan of other roofing materials to get a true picture of how the longevity of asphalt shingles stacks up. Galvanized steel roofing can easily last for sixty years. You would need to replace your asphalt shingles between three and four times before you face the need to replace your metal roof even once. By cutting down on replacement costs, metal roofs offer you a cost break. 

Energy Efficiency

Asphalt shingles are a highly absorptive material. They soak up the UV rays from the sun and convert them to heat. The hotter your roof gets, the more heat it allows to seep into your home, and the more heat that seeps into your home, the harder your AC unit has to work to cool your home back down. Thus, asphalt shingles lead to higher utility costs.

Before you install a metal roof on your home, you should find out what you can about its reflectivity and emissivity. Metal is a naturally reflective material, which will help to deflect the sun's UV rays away from your home. However, no metal will reflect 100% of the sun's rays. Thus, metal roofs will heat up, just not to the same degree that asphalt shingle roofs will. This is where emissivity comes into play. A highly emissive material will release heat into its environment. By releasing heat, the roof will allow heat to escape before it can steal into your home. Thus, a metal roof that is both highly reflective and highly emissive will keep your home far cooler than a roof that is highly absorptive.

By doing what you can to keep your home cool through the summer, you can keep your home more comfortable and decrease your cooling costs. Because metal roofs last longer and have far better energy efficiency than asphalt shingle roofs, they will not only protect your home, but they will protect your budget also. For more information, contact a local roofing company, like Great Canadian Roofing and Exteriors.