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.
Roof shingle granules in gutter.
The gutter is quicker to overflow.
It is typical for granules to shed from the roofing and deposit down into the gutter.
It seems to be most prevalent early and later in the shingles life.
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Granules naturally separate from shingles over its life.
After a few storms your new shingles should start losing less granules.
However when this begins to build up over a period of time passing water is slowed and other particles collect in the grains.
Usually this happens after a period of years.
Some granules are bound to fall off of your shingles every time it rains.
Why shingles leave granules in your gutters.
Are you getting roof granules or a sludge in the gutter.
This is especially true if your roof is brand new.
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.
Asphalt shingles are so heavily coated with these minerals that some fallout is completely normal.