If you are noticing granular loss from your shingles or excessive granulars in your gutters, it might be time to replace your roof. The granlulars on the shingles not only have the pretty color in them but also protects the shingle themselves. Once the granulars start to ware away, the shingle become susceptible to the suns UV, which in turn will start to break down the shingles which can lead to a leak. Please click the link to read more about granular loss
https://weatherprooftampa.com/granular-loss-on-shingle.../