Step 1 choose a cool and overcast day.
How do they pressure clean roofs.
We recommend hot water because metal roofs can handle it and hot water is more effective.
To clean a metal roof wait for a dry overcast day and make sure you have a partner to help you for safety reasons.
Never aim your pressure washer up the roof as it can push water under the shingles.
Then spray the cleaner onto the shingles photo 1.
Have you seen how most pressure washers clean the tiles.
Using high pressure to clean a tile roof is a crude and invasive form of cleaning.
Read more about why pressure washing a roof is a very stupid thing to do.
They keep the tip of the nozzle inches from the surface at 4 000 psi not 1 2 feet at 1 200.
Roof cleaning can be achieved by manually removing any excess moss and then applying the correct chemicals to the tiles.
In addition choose a day with little wind so that when you spray the solution it stays on your roof 1 x research sourcestep 2 perform maintenance on your roof.
Read on for our best roof cleaning tips.
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Use a sprayer attached to garden hose that s filled with equal parts chlorine bleach and water.
Instead of relying on high pressure to remove the algae and dirt we use soaps and tile roof cleaning chemicals specially designed to clean your roof the safest and most long lasting way possible.
Spraying water under your shingles can both tear off the shingles and force water under them and into your home.
Pour it into a pump sprayer strap yourself into a full body harness tie it down and climb to the roof.
Start off with a hot water pressure with a 40 degree tip.
Roofs with gentle slopes are easier to clean since they provide a leeway for walking easily on the roof.
Roofs with steep slopes might be dangerous to work on with a pressure washer and is recommended to use chemical cleaning methods on such roofs.
This is the best way to clean a roof if you have asphalt shingles.
Before you begin it s important to repair loose shingles and flashings to minimize roof damage.
That ll prevent the cleaner from drying out too quickly.
When you re ready to get started spray your roof using a garden hose with a spray nozzle attachment starting at the top of the roof and blasting downward so the dirty water runs off the sides.
Causing damage mold mildew.
Sunlight and warm weather will ensure the cleaning solution dries too fast to be of any use.
They also highly suggest limiting roof traffic.
Most commercial pressure washers operate at about 4 000 psi.
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.
The day you perform deep cleaning on the shingles should be cool and overcast.
This approach doesn t involve any water no mess and won t damage the tiles.
Of laundry strength liquid chlorine bleach and water.
This is very effective at getting rid of algae and mildew both of which often grow on metal roofs.
