Start on lowest row of shingles and work your way backwards to the upper part of the roof.
How to clean fungus from roof.
Then add one tablespoon of trisodium phosphate tsp and mix well.
Before you begin it s important to repair loose shingles and flashings to minimize roof damage.
Cut back tree branches at least a few feet away from your home s roof.
To keep the algae from coming back insert 6 inch wide strips of zinc or copper under the row of shingling closest to the roof peak leaving an inch or two of the lower edge exposed to the weather.
In a two gallon bucket create a cleanser composed of 1 4 chlorine bleach and 3 4 water.
Continue spraying until you see runoff then let the chemicals sit for 15 20 minutes to soak in and begin attacking the mold.
The day you perform deep cleaning on the shingles should be cool and overcast.
Mix 1 part bleach to 3 parts water and apply to the mildew covered area with a hand pump sprayer.
Though it is slow acting when compared to bleach solutions it can prevent mildew growth for years.
This will prevent the solution from draining in your direction.
Clean your gutters often to avoid.
Check for cleanliness and rinse.
That way whenever it rains some of the metal molecules will wash down the roof and kill any algae trying to regain a foothold on your shingles.
2 here are a few bleach free chemical treatments that can help keep fungus under control.
Sometimes roof fungus finds its way into our home but knowing the proper steps on how to avoid roof fungus can save you a lot of time and money.
We highly recommend taking action for combatting unwanted roof fungus by doing the following.
Sunlight and warm weather will ensure the cleaning solution dries too fast to be of any use.
Adding some tri sodium phosphate tsp will help clean the roof at the same time.
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.
Step 3 let the solution sit for 15 minutes then rinse it off with a hose.
Fill a handheld pump sprayer with the solution and apply it to the moldy shingles only.
Spray the entire roof thoroughly.