To remove severe rust stains.
How to remove oxidation from metal roof.
5 parts water 1 part diluted hydrochloric acid or citric acid or muriatic acid or oxalic acid or vinegar.
Metal roofing oxidation removal sandblasting.
For the most.
Use a rag to apply to affected spots and use circular wiping motions.
Modern chemical treatments provide a relatively safe method to use both for you and the environment.
Pine sap decaying leaves and even road dirt that s drifted into the air can settle on your metal roof and stain it.
First the chalk and oxidation need to be scrubbed off.
The results will most likely satisfy you.
Remove the particles or pieces that are causing the rust stains.
Most of these substances can be removed by a mixture of cup tri sodium phosphate and 1 gallon of water.
Spray this mixture onto the roof and agitate it with a soft bristled brush to get it clean.