Standing seam metal roofs are known for their durability and sleek appearance, but one issue some homeowners notice over time is granule loss, which is typically a problem associated with asphalt shingles rather than metal. If you’re seeing what looks like granules on a standing seam metal roof, it’s likely that these come from nearby asphalt shingles or other roofing materials rather than the metal itself. Granule loss in asphalt roofing happens because the small, mineral granules embedded in the shingles wear off due to weather exposure, impacting the roof’s protective layer. For standing seam metal, problems more commonly involve scratches, paint peeling, or surface coating degradation, which can sometimes look like granule loss but aren’t actual granules. To check your metal roof safely, visually inspect from the ground or a sturdy ladder, looking for any damage, discoloration, or loose panels without walking on the roof, which could cause injury or damage.
If you notice patches of paint or coatings flaking off, this might signal that your roof needs maintenance to prevent corrosion. A simple test is to gently rub a cloth or your finger over suspicious areas; if particles come off easily, your finish may be deteriorating. Since standing seam metal roofs are often coated with special finishes to protect against rust and UV damage, maintaining these coatings is important to extend your roof’s life. If you suspect significant damage or are unsure about the condition, calling a professional roofer who specializes in metal roofs is wise. When you do, ask how they handle coating repairs or replacements and whether their work maintains your roof’s original warranty. Questions like “What products do you use to restore the finish?” and “Will this repair affect my roof’s warranty?” will help you make informed decisions and keep your roof performing well for years to come.