Tab shingles are a popular type of asphalt shingle characterized by cutouts or "tabs" that give the roof a defined pattern. Over time, exposure to ultraviolet (UV) rays from the sun can cause these shingles to degrade. UV radiation breaks down the asphalt binder in the shingles, leading to brittleness, fading, and eventually cracking or curling. This process is accelerated in hot, sunny climates but can occur anywhere your roof is exposed to prolonged sunlight. You might notice granule loss (the small mineral particles on the shingle surface), color fading, or even the tabs lifting. Simple diagnostics include a careful visual inspection from the ground or with binoculars, looking for discolored or brittle-looking shingles. You can also gently press on a shingle tab; if it feels crumbly or cracks easily, it’s likely UV degradation is occurring.
For safe DIY checks, avoid climbing on the roof unless you have proper safety equipment and experience. Using a garden hose, rinse off any debris to get a clearer view of the damage. If you spot extensive granule loss or visibly cracked tabs, it’s wise to call a professional roofer for a thorough assessment. When speaking with a contractor, ask specifically how they will evaluate the extent of UV damage and if the shingles are still covered under any manufacturer warranty since UV damage can sometimes be a warranty issue. Also, inquire about the types of UV-resistant shingles available if replacement is recommended, and how they might improve your roof’s longevity in your particular climate. This ensures you get repairs or replacements that take future sun exposure into account.