Use a pressure washer which can loosen shingles and seriously damage your roof.
Can you power wash roof shingles.
What you can expect from a low pressure clean and treat service is a roof to be moss free for a period of 2 5 years.
Pressure washing is very effective but may be best for metal or concrete roofs.
Utilizing excessive pressure to clean or rinse a roof will shorten the shingle life dramatically.
Never pressure wash your roof if you have asphalt shingles.
For extra cleaning power mix in a non ammonia heavy cleaner like tsp.
Of laundry strength liquid chlorine bleach and water.
Yes it will make it look sparkling clean but also you ll end up replacing the roof system sooner rather than later.
Pick a cool overcast day so the cleaning solution doesn t dry too fast.
Once you squeeze the trigger the powerful recoil on the spray wand can throw you off balance and off of a ladder.
The water pressure will remove the granules that are important for protecting your roof.
Of course some chemicals can harm your roof as well and the runoff could cause problems with your landscape or parts of your home.
Use a sprayer attached to garden hose that s filled with equal parts chlorine bleach and water.
One part of proper roof maintenance is cleaning the shingles which you can do yourself in less than an hour.
There is a chance that the pressurized water could damage your shingles.
Sure it s tempting to want to get any moss algae dirt etc.
Then mix standard laundry bleach with water.
The concentrated jet will scrape off the small pebbles on top of the shingles and reduce their water repellency which will only make your mold situation worse.
Any time a low pressure wash service is done it should include the gutters.
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.
The damage caused by pressure washing is not immediately noticeable.
But pressure washing your asphalt roof will do more harm than good.
If you have a consistent problem with mold growth on your roof consult a roofing professional.
Off of your roofing shingles.
You should never allow anyone who utilizes a power washer to clean your roof as they are damaging the shingles themselves by using this type of excessive pressure.
It also makes the clean up much cleaner leaving the home or property usually much cleaner than it was before we arrived.
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.