It can take up to 4 to 6 weeks for the moss to come off the roof.
Power washing roof moss.
We apply a special blend of soaps and let the rain rinse it off.
Carefully place a ladder near the area of moss.
Most techniques that we have come across to remove moss are often achieved by violent means such as power washing which may cause damage to the roof especially when combined with unnecessary foot traffic often leading to cracked or broken roof tiles.
By comparison a fire hose sprays at 150 to 300 psi.
Hose off and brush all moss loose from your roof shingles.
Power washing takes 5 years off the roof surface.
The average garden hose sprays water at 40 to 80 psi.
If your moss problem requires more than.
You don t ever power wash a roof.
You soft wash a roof.
There will be some granule loss under the moss and lichen.
Instead soft washing with a garden hose is least likely to chip dent or crack the tiles or panels.
Apply a storebought or diy cleaning solution to remove the moss.
Always stand on a dry area of the roof as wet shingles can be very slippery.
But that is normal.
The power of a pressure washer can damage the shingles on your roof so it s important that you select the proper spray tip.
A light sweeping or a rinse with the garden hose is usually sufficient and most roofs don t even need that.
Pressure washers use 1 300 to 2 800 pounds per square inch to strip dirt moss and even paint from a surface.
Start with a medium pressure spray pattern and adjust from there accordingly.