The classic french drain is simple just a trench filled with gravel with sand on top.
Gravel in gutters.
Reverse curve gutter guards are made of a curved piece of thin metal that directs water into the gutters and everything else onto the ground.
This could be caused by heavy rains or hail that beat on the roof and loosen the granules.
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If the roof is reported to be new the granules shown in our photo are normal and not a worry.
Granules naturally separate from shingles over its life.
It seems to be most prevalent early and later in the shingles life.
These are good for directing away large debris but they will not catch sand dirt and shingle sediment.
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.
The loss of granules will stop and it s no reason to worry.
A french drain is a system for eliminating excess water from the soil.
You may see an influx of granules in your downspouts after a storm.
Watch this short video to learn exactly why.
It is common to see granules washed into the gutters and downspouts of your home after a new roof has been installed.
Bottle brush gutter guards stand up inside the gutters and collect debris.
It allows excess water to percolate.