3 Reasons Granule Loss Occur in Asphalt Shingles

Asphalt roofing shingles come with a mineral-based coating that helps the material head off the harshest weather conditions. But there may be instances where you’ll find these granules in the gutters or at the end of downspouts, leaving the shingles “bald”. What causes this?

1. Foot Traffic 

Asphalt shingles actually start to lose these protective granules right after they’re installed. Have you noticed that mineral granules have been washed off your new shingle roof? They may have been loosened as your installer walks along its roof surface. Don’t worry about it because this is normal. Provided that they are careful as they move across it, your new roofing system should be fine.

2. Normal Wear and Tear

Given how your shingle roofing is constantly exposed to changes in temperature, you won’t be surprised to find their protective granules wearing thin over time. Just note, however, that extreme weather and old age can accelerate granule loss in your shingles. Check your gutters following a storm to determine if there are excessive granules inside them. You should also take a close look at the roofing material itself. When the shingles are already completely worn and are already showing their substrate, it might be time for a replacement. 

3. Blistering

This refers to “pimple-like” protrusions on the shingle surface caused by a manufacturing defect or poor installation. Blisters are usually the first wear points of a shingle when its surface wears away, which in turn, allows for granule loss. You’ll know the roofing material is defective when it’s already showing bald spots or exposed shingle substrate long before it should.

To prevent granule loss in your new shingle roof and ensure longer lasting weather performance, just turn to your trusted roofing company, Crown Roofing LTD . With our trained and experienced crew, we’ll make sure your system is installed perfectly right the first time. We serve Vancouver, BC, and the surrounding areas. Call us today at (604) 370-6288, or fill out this contact form to schedule your roof evaluation.