Always stand on a dry area of the roof as wet shingles can be very slippery.
How to power wash a shingle roof.
Put on shoes with soft non slip soles.
Attach a 35 degree spray wand to the pressure washer hose and fill the pressure washer with a recommended cleaning.
Put on rubber gloves and a breathing mask before proceeding you so you can.
How to pressure wash roof shingles 1.
Pick a cool overcast day so the cleaning solution doesn t dry too fast.
Never use a.
Allow the solution to soak into the shingles for at least 15 minutes.
1500 psi or less with 10 15 gallons per minute.
Your roof is easily damaged with hard shoes.
Cleaning step 2 make and apply the bleach solution.
Then mix standard laundry bleach with water.
Of laundry strength liquid chlorine bleach and water.
Step 3 check for cleanliness and rinse.
The two main methods for roof cleaning are.
Non slip soles will improve your.
Start with a medium pressure spray pattern and adjust from there accordingly.
Place a ladder at.
The power of a pressure washer can damage the shingles on your roof so it s important that you select the proper spray tip.
For roofs that are streaked and discolored with algae growth moss or other forms of mildew and mold you can still clean your roof and leave the power washer in the garage.
Step 4 take precautions.
Use a sprayer attached to garden hose that s filled with equal parts chlorine bleach and water.
Use of 35 40degree tips stay away from smaller tips which control the spray pattern positioning of the wand and direction of spray 45 degree angle and 8 to a foot distance from shingles.
You ll need corrosive cleaner like lye a garden hose a supplemental water pump or a specialized roof or shingle cleaning tool and the proper safety equipment.
Pressure washing in which highly pressurized water is sprayed on the roof to remove any mold algae dirt or grime and chemical cleaning sometimes called soft washing in which chemicals are the main thing that are removing those harmful things from your roof.
This is the best way to clean a roof if you have asphalt shingles.
For extra cleaning power mix in a non ammonia heavy cleaner like tsp.
Hose off and brush all moss loose from your roof shingles.
Use a pressure washer which can loosen shingles and seriously damage your roof.