Remove the detergent mixture residue with.
How to white wash tin roof.
Now take a soft brush dip it into the solution and start scrubbing the areas affected by mold and mildew.
Remove the particles or pieces that are causing the rust stains.
How to whitewash metals.
Tsp is available in most paint or home improvement stores.
If you re working on a large project it may take more than one day to complete.
Use a cloth or sponge to clean.
Mix up some of that same white chalk paint i linked above along with a little water.
If needed increase the amount to cover a larger area while keeping the same proportion of water and tsp.
Use light pressure to work at the stain until it is gone.
Wash the item with a mild detergent and water solution using a lint free cloth.
Continue all the way around until the paint looks even.
For every part water combine 0 05 part mild dish or laundry detergent.
Them down with clean water before applying the mix and immediately after whether you cover them or not.
Mix water and mild detergent for stubborn areas.
Remove any rust from the item intended for whitewashing.
Brush the item completely using a wire brush to remove rust and other debris.
Use a rag to scrub the surface applying pressure over the wax areas to remove paint.
For any areas that don t wash away with pressurized water fill a bucket or other container with water.
Paint the entire surface with white paint and let it dry until tacky about 15 to 20 minutes.
If desired moisten the rag with water to remove even more paint.
To remove mild rust stains.
And don t forget to go back and get those rolled edges on top and bottom.
Opt for something soft to protect your roof s paint and parts.
Using a plastic pump type garden sprayer thoroughly soak the affected allow it to sit for at least 5 minutes.
You want this to be more fluid so it soaks in not lays on top thickly.
Mix 1 2 cup of tri sodium phosphate tsp in a gallon of water in a bucket.
Use a mild abrasive cleaner soft scrub applied to a non abrasive pad.