It seems to be most prevalent early and later in the shingles life.
Roof shingle granules in gutter.
Shingle sediment is made up primarily of sand like granules or grit that separate from asphalt shingles and other small matter that sticks to the roof surface and washes into gutters.
As any homeowner will tell you however gutters can be filled with all kinds of debris including granules from your roof s shingles.
If you see granules in the gutter it might be a sign that you need a new roof so you should not hesitate to call a professional roofing contractor when you see granules shedding from your roof.
Because each shingle has so many you usually don t have to be concerned about finding granules in your gutters especially if your roof is relatively new.
Normal mineral granule loss on a new asphalt shingle roof granule loss on a new asphalt roof loose mineral granules wash down the roof and will appear in gutters and at the ends of downspouts.
After a few storms your new shingles should start losing less granules.
This is especially true if your roof is brand new.
Given the origin of these granules a staple of any asphalt shingle roof your immediate instinct upon finding them should not be to fear for the integrity of your roof.
You can begin this roof condition assessment at the ground before even looking at the roof itself.
Gather up your pry bar hammer utility knife replacement shingles and some 1 1 4 inch roofing nails.
Why shingles leave granules in your gutters.
Some granules are bound to fall off of your shingles every time it rains.
Collect some shingle granules from the rain gutter and sprinkle over wet sealant to camouflage crack repair.