An asphalt shagel typically has three layers: fiberglass, asphalt, asphalt mixed with filler and an outer layer made of granules. The granules give asphalt shingles their unique features, such as color, energy-efficient and reflective properties. KCG Roofing, a roofing company is here to help you understand this crucial component and whether loose granules should be a concern.
Crushed stone and other minerals are used to make roofing granules. These granules are made from crushed stone and minerals. They allow roofing companies to make asphalt shingles in virtually any size or color. The granules also contain copper to prevent algae growth.
It is important that you note that granule losses are a normal part of roofing wear. These granules will remain on the roof for the majority of its life span. Some of these granules become looser from the asphalt layer as the roofing age.
Reasons for Granule Loss
Granules can be a common occurrence. However, it’s a concern if you notice more granules than usual. Missing granules could mean many things. However, the worst thing is aging or defective shingles that are unable to protect your home from harsh weather conditions.
These are some causes of granule losses:
Shingles Are Defective
Although it is not very common, it does happen. Blistering is the most obvious sign of a defect in the asphalt shingle. Blistering is caused by moisture pockets in the asphalt layer. As the moisture expands and contracts, it forms blisters.
Your Roof Is Old
As your roof ages, and experiences a variety of weather events over time, it will lose granules. As the bond that holds the embedded granules begins to weaken, the granules are released. This makes the shingle less susceptible to UV damage and can lead to cracking and brittleness. A roof repair is possible if your roof is older than 10 years.
After a severe hailstorm, or heavy storm , granule loss can often be seen. You should contact KCG Roofing if you notice any of these signs. There could be damage that can lead to costly leaks down the road.
The Rules of Roof Cleaning
Low-pressure washing with a tip is claimed by some roofing companies to be able to clean roofing shingles. Even low-pressure washing can cause damage to shingles by washing away important granules. Never use pressure power-washing to clean your roof. Your roof warranty will be void if you do this. KCG Roofing can help you properly clean your roof if it is stained with algae, moss or looks “dirty”.
Your Roof Is Not Ventilated
When installing your roof, your roofing contractor will need to do specific calculations. These calculations are not done by 90% of roofers. The air won’t exhaust effectively if the balance between the intake from the roof’s soffit and exhaust from the roof vents isn’t calculated correctly. This creates a “convection oven” where the shingles will be cooked from the inside as well as the outside. KCG Roofing is dedicated to making sure your roof lasts as long and as well as possible.
A variety of physical hazards can cause excessive granule loss in certain areas. Granule loss can be caused by animal damage, tree limbs being brushed off the roof, and heavy traffic to adjust the satellite dish.
This post was written by a roofing professional at KCG Roofing. KCG Roofing is a premier roofing contractor that does roofing in Venice FL! KCG Roofing has the experience and expertise to replace or repair your roof with quality materials and excellent craftsmanship. All our roofs are backed by a 15-year leak-free guarantee, the highest in the industry. We have been family-owned and operated for over 40 years.