It seems to be most prevalent early and later in the shingles life.
Gutter shingle debris.
If your gutters are overflowing leaves and other debris could be the least of your problems.
Notice the gutters were not drainging so i check gutters.
On 2015 09 08 by paul.
Have the gutters cleaned out and check their slope.
Granules naturally separate from shingles over its life.
The angled installation allows water and wind to clear debris off your roof while at the same time channeling the rain into the gutter and through the downspouts.
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.
To avoid needle accumulation in your gutters look for gutter covers that use the surface tension of the water to push away all debris such as leaves and needles.
Pay attention to what s clogging up your gutter systems and you can keep track of the integrity of your roofing.
However if they re installed correctly the amount of debris that enters the gutter is usually small enough to be washed away and the solid surface of the guards can be cleaned with just an occasional spraying with a garden hose.
Sediment can clog gutters whether you live near a dusty road or you have old asphalt shingles that are decomposing fine sediment is a common problem in your gutters.
Slip under shingles and screw to gutters.
Look in the roof gutters for shingle granules too.