Of laundry strength liquid chlorine bleach and water.
Pressure clean a roof.
Read on for our best roof cleaning tips.
Aim the pressure washer down the roof toward the gutters and keep the tip of the wand at least a foot away from the surface when starting.
Most contractors don t recommend pressure washing or power washing a roof.
This is the best way to clean a roof if you have asphalt shingles.
Use a sprayer attached to garden hose that s filled with equal parts chlorine bleach and water.
A normal 9 trowel is suitable if your roofing contractor chooses a dry day any moss will flake off the roof much easier and there won t be any scratch marks on the tiles.
The two main methods for roof cleaning are.
Scraping is more destructive to shingles which makes pressure washing your safest bet.
This is because the water comes out too forcefully and can damage the material.
When you pressure wash use the minimum force possible to pry the fungus free and wash it from the roof.
Cement tile residue from roof power washing who knows your roof better than a roofer.
Use a pressure washer which can loosen shingles and seriously damage your roof.
Never aim your pressure washer up the roof as it can push water under the shingles.
Instead soft washing with a garden hose is least likely to chip dent or crack the tiles or panels.
Since pressure washing water does not kill the mold mildew and algae your roof will get dirty within 6 months.
Always stand on a dry area of the roof as wet shingles can be very slippery.
Therefore low pressure roof cleaning is the safest and most effective way to clean a roof.
Here s a video link to the instances that call for rinsing.
Chemical cleaning sometimes called soft washing in which chemicals are the main thing that are removing those harmful.
Spraying water under your shingles can both tear off the shingles and force water under them and into your home.
Instead spray down the roof with a cleaner that kills mold and moss or apply a 50 50 mixture of bleach and water in a pump sprayer and let the moss die on its own.