Yes it will make it look sparkling clean but also you ll end up replacing the roof system sooner rather than later.
Can you pressure wash roof shingles.
Then mix standard laundry bleach with water.
Once you squeeze the trigger the powerful recoil on the spray wand can throw you off balance and off of a ladder.
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.
Pick a cool overcast day so the cleaning solution doesn t dry too fast.
The water pressure will remove the granules that are important for protecting your roof.
Roof cleaning can be accomplished two ways 1.
Use a sprayer attached to garden hose that s filled with equal parts chlorine bleach and water.
Therefore it strips away years of your roof s lifespan.
Mother nature can do the rinsing.
Of course some chemicals can harm your roof as well and the runoff could cause problems with your landscape or parts of your home.
For extra cleaning power mix in a non ammonia heavy cleaner like tsp.
If you have a consistent problem with mold growth on your roof consult a roofing professional.
One part of proper roof maintenance is cleaning the shingles which you can do yourself in less than an hour.
It s generally not necessary to pressure wash a shingle roof for the purpose of removing ordinary dirt and leaves and pressure washing can potentially damage the shingles coating of protective.
The response isn t wrong.
Of laundry strength liquid chlorine bleach and water.
Pressure washing is very effective but may be best for metal or concrete roofs.
The roof can be physically washed with light pressure or 2.
Pressure washing strips the granules from asphalt shingles.
The short answer is no when you search this very same question you ll see the internet shout back with words like never and don t.
The damage caused by pressure washing is not immediately noticeable.
Roof cleaning contractors go up on the roof and physically wash the roof down.
Not to mention using a pressure washer from a high place is dangerous.
This is the best way to clean a roof if you have asphalt shingles.
Never pressure wash your roof if you have asphalt shingles.