Granule loss which is uniform across the roof is usually a result of normal weathering. Over time, the bond between the granules and asphalt deteriorates, and granules will be loosened and carried away by runoff. Prolonged exposure to hail can also loosen granules.
Is it normal for a new roof to lose granules?
If you have just gotten a new roof installed, you are likely to experience this. Granules are embedded in asphalt shingles during the manufacturing of the tiles. … While a bit of granule loss is normal, there may be a need to inspect your roof to ensure that the actual intact granules are still in place.
What does granular loss look like?
Ones that have lost their granules will be black, and look more like a uniform surface, compared to the lighter, visibly granulated shingles around them. They will often be misshapen as well. Do I Need a Roof Replacement? If you’re losing granules, as we said, it can be a common symptom of an aging roof.
What is the purpose of granules on asphalt shingles?
Granules have 3 main purposes: To protect the asphalt coating from UV rays, to add aesthetic beauty (colors) and to provide fire resistance. All asphalt shingles have granule surfaces that will lose adhesion qualities over time.
What is the grit on shingles?
Roofing granules serve several purposes: Installation – helps to prevent the asphalt shingles from sticking together and provides an improved walking surface for installers. Durability – granules help to ensure a lasting performance of shingles as they are exposed to harsh weather conditions over the years.
What causes roof shingles to lose granules?
If there is a defect in the shingle, the most common symptom will be blistering. Blistering occurs when pockets of moisture from inside the asphalt layer and as the moisture expands and contracts if forms the blisters. As your roof ages and endures a series of weather events, it will naturally begin to lose granules.
Do 30 year shingles really last 30 years?
Shingles Do Not Have a Guarantee
The truth is, a 30-year shingle will not really last 30 years. The expected service life of a 30-year product, if properly cared for, is approximately 25 years. If it’s not cared for properly, that 30 year shingle will only last 12 to 15 years.
How long do residential roofs last?
Roofs. Slate, copper and tile roofs can last more than 50 years. Homeowners with wood shake roofs should expect them to last about 30 years, while fiber cement shingles last about 25 years and asphalt shingle/composition roofs last about 20 years, the NAHB found.
When should I replace my roof?
In general, this is the recommended replacement schedule based on the material used:
- Composition Shingles: 12-20 years.
- Asphalt Shingles: 15-30 years.
- Wood Shingles: 20-25 years.
- Rubber Roofs: 30-50 years.
- Metal Roofs: 50-75 years.
Do new shingles shed?
Aging Roof Losing Granules
Asphalt shingles should experience fairly gradual, even-spread asphalt shingle granule loss, and this is not necessarily a bad sign. … There is nothing to be alarmed at if your shingles are shedding a few granules throughout the years.
Are shingles supposed to be loose?
If more than one shingle is loose or actually missing, that could be a sign of a general shingle problem. Maybe it was caused by extreme weather, but your shingles also might be improperly installed or getting too old. Either way, your attic and other interior areas could be vulnerable to water damage.