Asphalt shingles are covered by a layer of granules. This is the layer that provides the roofing colors as well as other features such as protection against UV rays and algae growth. During your roof’s lifetime, you will find granules come loose. But is this something to be worried about? Roof replacement contractor ReNew Home Designs shares an in-depth look.
Loose Asphalt Shingle Granules
Asphalt shingle granules are made of crushed colored stone and minerals. During manufacture, these granules are embedded on asphalt-soaked backing material. It’s not uncommon for some of these granules to come loose like bread crumbs, even when newly-manufactured. In fact, granule loss is part of normal roofing wear and tear. Once in a while, you’ll find a few granules in the gutter runoff.
While a few granules are not a cause for worry, it’s an entirely different case if you check your gutters and it looks like someone dumped a morning’s worth of coffee grounds in them. At this rate, granule loss could result in what is known as “bald” shingles; the asphalt layer can become exposed to the elements. Loss of granule adhesion is often due to age, but can also be caused by manufacturing defects, impact damage, or tree branches poking the roofing surface.
The good news is, loose granules rarely leads to an unplanned roof replacement. In the event of excessive granule loss, roofers will first determine the cause and help you with a solution.
Roof Repairs — In case granule loss was caused by external causes, such as tree branches or hail damage, such issues will need to be addressed. In addition to roof repairs, surrounding trees will also have to be trimmed.
Warranty Repairs — If the asphalt shingles turn out to be a bad batch, the manufacturer warranty should cover such defects. This is why it’s important to let your roofing contractor know about such problems early on. Granule loss can happen as early as within the first two years.
Consider Different Roofing Systems — If your roof is up for replacement, consider a different roofing system, such as metal or slate.
ReNew Home Designs is your leading provider of exterior home services. Give us a call at (410) 415-1226 or fill out our contact form. We serve customers in Columbia and Annapolis, MD.