If you have an asphalt roof, then your roof will be covered with layered shingles. These shingles will consist of a base or mat made from cellulose or inorganic fiberglass. The mat is covered with a petroleum product called asphalt, and then minerals are sprinkled over the top. These minerals are extremely important when it comes to keeping your roof in great shape. However, the granules will loosen and blow away over time. If you notice this on your roof, then keep reading to understand the importance of the minerals and also how they can be replaced.
Why Are Shingle Granules Important?
Asphalt shingle granules are adhered directly to the tops of your shingles during the initial manufacturing process. The granules serve an important function when it comes to the longevity of your shingles and general wear and tear issues. The minerals are meant to either absorb or reflect the sun's UV rays. These sun rays can cause extensive roof damage. The sun will contribute to thermal heat gain where the roofing structure heats up. Not only can this cause fluctuations in the temperatures inside your home, but the heat will force the asphalt or petroleum to evaporate from the shingles. They will then become dry and brittle.
Shingle minerals also protect the roof from weather damage that can occur when the roof is subjected to high winds, sleet, and hail. In general, the minerals will absorb the shock and stress and fall off the roof. The softer cellulose or fiberglass mats are then left alone.
When Should A Roofing Inspection Be Completed?
Old age, weather damage, poor product manufacturing, and blister rashing can all contribute to the loss of mineral granules. You will often see these minerals in your gutters or in the water runoff that comes out of your downspouts. If you notice an abundance of minerals or an abnormal amount of the granules coming off your roof at one time, then you should contact a roofing professional to inspect your roof. It may be time for a new roof installation, especially if the granules have been lost for some time or if you notice your roofing shingles bowing, cupping, or cracking.
How Can Minerals Be Replaced?
If the roof is in relatively good condition or if your roofer says that you do not need a shingle replacement right away, then replace the roofing minerals. Roofing granules may be made out of a variety of different materials, and you may find some relatively cheap and natural granules made from granite. These granules may not last as long as other varieties. If you want your granules to wear well and protect your roof, then look for ones that are ceramic coated.
Ceramic coated roofing minerals are made from a granite base. This base is then covered in clay. Typically, a dye or coloring agent is mixed in as well to tint the granules. The granite rocks are then fired in a kiln. This hardens the coating over the granite and creates a ceramic top layer. The ceramic layer is strong and dense. This adds strength, UV resistance, and weight to the granules.
When purchasing your roofing granules, look for ones that are labeled as either ceramic or ceramic coated. You will also need an adhesive to stick the granules in place. Purchase either an acrylic roofing cement or a liquid asphalt product. Work in small sections. Pour the adhesive in a paint tray and run a small roller through the tray to pick up a generous amount of the adhesive. Roll the material on a two foot square area of the roof and then sprinkle the granules over the adhesive. For the best protection, make sure the minerals cover the shingles so you only see a small bit of black showing though.
For more information, contact a roofing company like Drey Roofing.