Second moss absorbs water.
Moss on roof tiles damage.
Without any protection your shingles will warp and crack in the sun significantly shortening their lifespan.
If you are to use a power washer you have to make sure you are standing on top of the roof and pointing the power washer downwards.
Moss damages your shingles in three significant ways.
If you allow large patches of moss to grow on your roof these patches hold water against the surface of the roof which can cause the roofing materials to rot.
However the greatest benefit of moss removal is on the gutters.
Moss on roof tiles can cause multiple problems such as wood rotting and the obstruction of drainage points.
Once moss is removed there are less blockages and your gutters work more efficiently.
If you remove moss from the roof then you will reduce the possibility of tiles suffering from winter cracks.
Moss alone cannot damage the tiles.
If high pressure water is aimed near any damaged or missing roof tiles you will end up causing more damage than the moss ever did.
In addition the water trapped by the moss pools in gaps between your roof s tiles and as that water freezes and thaws it can pull the tiles apart causing even more damage.
First moss will strip away the protective oils on your shingles making them susceptible to erosion and sun damage.