But outdoor heavy duty cleaning usually calls for more heavy duty mixtures such as tsp and chlorine bleach see the tsp page for more details or specialty additives such as jomax from rustoleum which combines a cleaner with a bleach activator.
Cleaning roof with bleach and tsp.
When mixing the tsp with bleach for roof cleaning you will want to use a pressure washer with the black soft spray chemical injector tip.
Regardless of where you live in the usa the stains are the same as well as the cleaning procedure.
Roof stains return in as few as 9 months and the roof mold is worse than before.
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.
Tsp can be very difficult to mix hot water is recommended but not needed here is a simple method.
Why not clean my roof with bleach.
Mixing tsp for roof cleaning.
To clean a metal roof wait for a dry overcast day and make sure you have a partner to help you for safety reasons.
Roof cleaning using chemicals like chlorine bleach and tsp trisodium phosphate as a cheap roof cleaning spray to make your shingles look new again is not advisable.
We use a 5 5 gallon system just for this reason.
Roof cleaning using chemicals like chlorine bleach and tsp.
Chlorine bleach also known as sodium hypochlorite or sh is not meant to be a roof cleaning chemical because it kills surface algae but can not penetrate the roof shingle granules to remove black mold root structures.
We are a roof cleaning company in new jersey.
Jul 6 2012 how to clean mold off a roof.
Diluted in water and applied often with a stiff scrub brush it can.
Chlorine bleach tsp chemical combination can kill plants and the phosphates hurt the environment.
They clearly warn against pressure washing and suggest the use of bleach and tsp trisodium phosphate.
How to use bleach mixtures on your roof.