Moss damages your shingles in three significant ways.
Will moss damage my roof shingles.
This exposes the substrate to uv radiation from sunlight which causes the shingle substrate.
Moss growing on a roof may or may not be considered attractive or quaint but there is no doubt that extensive moss on a roof can seriously damage the roof by growing under and raising or loosening.
To dry out and become brittle.
Apply a storebought or diy cleaning solution to remove the moss.
Moss will commonly thrive in any type of environment that is shaded and damp.
First moss will strip away the protective oils on your shingles making them susceptible to erosion and sun damage.
Without any protection your shingles will warp and crack in the sun significantly shortening their lifespan.
The roof may look cleaner but its remaining life may be reduced by aggressive cleaning.
A simple mixture of bleach and water will kill the moss causing it to dry up release from your roof and blow off in the wind.
A thick growth of moss works like a sponge keeping the roofing damp for long periods and it can lift edges of shingles making them vulnerable to blowing off in a windstorm.
Yes moss on a roof is damaging.
It does two things to a composition asphalt shingle.
The moss will absorb the damp environment s moisture and establish roots on the roof.
It helps keep your roof wet by storing moisture and preventing proper drainage.
This lack of drainage not only helps the moss grow and thrive but also may damage your roof because it increases the risk of water getting under the shingles.
You will also have to replace your roof much faster.
Second moss absorbs water.
If your roof has moss or algae then you will have a hotter attic and higher bills.
If your moss problem.
Your roof shingles tiles and slates.
Moss thrives in damp moist areas including roofs that are north facing or shaded by trees.
If you ignore it overtime moss will grow beneath your shingles and lead to more severe damage.
The high powered water jets can damage shingles and remove the shingle granules that protect the roof.
The roots then can lift up the shingles on the roof.
First as detu indicated it will trap moisture against the shingles causing them to lose granules sooner.
Furthermore some manufacturers use preservatives which moss loves to feast on.
