To remove difficult algae spots use only a wet cloth sponge or low pressure washer.
How to clean a tin roof.
5 parts water 1 part diluted hydrochloric acid or citric acid or muriatic acid or oxalic acid or vinegar.
For any areas that don t wash away with pressurized water fill a.
Turn the dial back to the water setting and rinse down landscaping.
Spray the roof with the diluted substance and let it sit for about an hour.
Use a rag to apply to affected spots and use circular wiping motions.
Remove the particles or pieces that are causing the rust stains.
Use a cloth or sponge to clean.
Opt for something soft to protect your roof s paint and parts.
Finally thoroughly rinse off the solution with plain water.
Spray your roof down with wet forget.
Apply the product on a day without wind to get the full reach out of the hose end sprayer.
Vinegar bleach ammonia and salt will all effectively change the ph level of your roof allowing you to clean it.
To remove algae and moss growth from the roof dissolve one cup of ammonia for every 5 gallons of water used and work from the top to the bottom.
Turn the black dial to the off setting and you re done.
This is one of the most non invasive and easiest ways to get a metal roof clean.
To remove severe rust stains.
Addressing stubborn spots 1.
Scrub problem areas with your.
Mix water and mild detergent for stubborn areas.
Then you ll just need to apply to solution to your metal roof with a sponge microfiber cloth or soft bristle brush and let it sit on the surface for 5 10 minutes.