The high powered water jets can damage shingles and remove the shingle granules that protect the roof.
How do i clean my roof shingles.
There are several products on the market specifically designed to remove algae stains from roofs such as wet forget outdoor.
Using shingles that have been treated with algicide keeps the growth at bay for about 10 years thus the 10 year algae warranty.
While an occasional cleaning might not harm your roof repeated use of harsh chemicals or the erosive effects of pressure washing can damage or shorten the life of asphalt shingles.
This video shows a basic overview of the roof cleaning algae stain removal restorat.
Do it yourself and save big bucks.
So it pays to clean your shingles as soon as you spot algae growth.
Apply a storebought or diy cleaning solution to remove the moss.
In other words only clean your asphalt shingles on days when the temperature will remain above 32 degrees fahrenheit zero degrees celsius.
Clean your roof on a sunny day which will cause the bleach solution to evaporate too quickly limiting its cleansing effects.
Additionally don t clean your asphalt tiles on days when the cleaning agent could freeze.
Stay off the roof during very windy days.
Clean your roof on a cloudy calm day when the wind isn t blowing and there s no threat of precipitation.
Clean your roof without taking proper safety precautions.
That way you always stand on dry surface and reduce the chance of slipping.
Video on how to clean softwash an asphalt shingle roof including where to find.
Therefore clean asphalt shingles on cloudy days.
Cleaning roofs is slippery work.
Start at the lower portion of the roof moving up as you clean each lower section.
Then mix standard laundry bleach with water.
For extra cleaning power mix in a non ammonia heavy cleaner like tsp.
But once the algicide wears off your roof hosts an all you can eat buffet for the neighborhood algae spores.
Use the sprayer to saturate a strip 3 feet high x 10 feet wide.
Roof cleaning is required maintenance for all composite shingle roofs.
Every wonder what causes those ugly black streaks and stains on your roof.