What is the Purpose of Granules on Shingles?

There are three parts to a roof: asphalt, fiberglass matting, and stone granules. When you get a new roof, you are ensuring that these important parts are updated and in good shape. Each serves a purpose. Older shingles become thinner over time from erosion and weather, and their granules can wear down. This, in particular, is a major problem because granules have a purpose and are needed to properly protect your home. 

So, what purpose do these granules serve, and why do we need them?

The top layer of shingles is made up of granules. These granules are ceramic baked and given a protective layer to protect from UV rays. Therefore, the newer the roof, the more protection you have from UV rays and heat. This saves money on energy and ensures a comfortable temperature for your home. Older shingles lose these granules overtime as they wear down. Granules can be affected by tree branches and anything else that is banging or scraping against your roof. Hail is one of the biggest threats to granules. The more hail that granules have to put up with, the more they will be removed over time. This removes that extra layer of protection and leaves a home more exposed to the elements. In addition, these small gaps in the roof can lead to leaks and exposure to harsh weather. 

You can see why it is so important to keep your home up to date, and just how investing in a new roof will save you money in the long run. Granules are necessary for keeping your home in good shape, keeping the elements out of your house, and protecting from UV rays and high energy costs. 

As always, if you have any questions at all, give us a call so we can get them answered for you!