Using high pressure water is likely to create some of its own damage by delaminating tiles and even potentially lifting roof tiles or dislodging flashing and eroding the pointing of parapet walls and chimneys.
How to get rid of moss growing on a roof.
Carefully place a ladder near the area of moss growth and don slip resistant shoes old clothes rubber gloves and eye.
This is oof cleaning products which should be left to absorb into the moss for at least 20 minutes will not evaporate as quickly as they would on sunny days.
Spray the moss covered roof with a moss control product or sprinkle the material on depending on the product formulation.
Clean your roof moss needs a substrate such as dirt to grow in the first place so cleaning your roof once or twice a year is a great way to prevent moss growth.
This can also damage the surfaces and does little to stop the moss returning.
After each cleaning you can also put some baking soda on the ridgeline of your roof since the baking soda will make an unsuitably high ph condition in which moss cannot grow.
Q i have moss growing on my red tiled roof.
Experts recommend that you save roof moss removal for a cloudy day.
Hose off and brush all moss loose from your roof shingles.
Potassium salts of fatty acids applied using a hose end spray attachment.