Hiring a professional to clean your roof.
Getting stains off of roof.
Remove black stains from roof shingles to preserve the appearance of your home s roof.
Spray the roof with the diluted substance and let it sit for about an hour.
Also with condensation you may get a 6 12 ring on the edge between the wall and ceiling.
Do it yourself and save big bucks.
This will cover 200 sq.
Not to mention the danger of using a pressure washer on a pitched roof.
If you don t want to climb around on a slippery roof or your shingle manufacturer will void your warranty if you try to clean your roof yourself you should contact a professional roof cleaning service to get rid of those ugly black algae stains on your roof.
But once the algicide wears off your roof hosts an all you can eat buffet for the neighborhood algae spores.
The fabric ceilings when they get moisture pull the coloring from the wood backing to the fabric and leave water rings.
How to get rid of algae on the roof.
The black mold like stains and streaks that appear on roofs particularly light colored asphalt shingles is actually a blue green algae gloeocapsa magma.
Chlorine bleach and trisodium phosphate step 1 wet down the roof with water from the garden hose.
Mix the soap and water well first then add the bleach.
Then use a soft bristled scrub brush to remove the stain from the roof itself and rinse with clean water.
Commonly found in climates with warm humid summers it does no damage to the roofing but it certainly does looks bad.
These are tough stains to completely remove as the algae is embedded deep in the shingle grit.
Professional roof cleaners charge hundreds of dollars.
It is important that the roof be wet when the cleaning mixture is applied or it may evaporate before it has a chance to work.
Spray the black stains first then the entire roof so the stains get a second dose.
The bigger the roof the more hundreds you ll spend.
Sometimes you may find that there s a very stubborn stain on your roof that is caused by heavy fungus growth.
So it pays to clean your shingles as soon as you spot algae growth.
I had to get out the pressure washer to really clean the roof but needed to use caution to not damage it.
Sometimes you don t notice a water leak until you see a stain ring on the edge of your ceiling.
The bleach degrades into salt which kills microbial growths and the sodium silicate does the same.