Lightly scrub the surface until the area is free of mildew or mold.
Pressure washer osphate cleaning concentrates for metal roofs.
Rinse the surface well with plain water.
1 3 cup of powdered laundry detergent 1 quart of bleach 5 solution 3 quarts of water.
For severe cases a stronger cleaning solution with bleach tsp or oxalic acid may also be required.
The power of pressure washers can be too much of a good thing.
The mold armor e z multi purpose pressure washer concentrate powers away is a power washer cleaning solution that kills mold and mildew and cleans away the toughest dirt and grime.
Dip a soft brush or rag in the cleanser and apply to affected areas.
Tsp can be very difficult to mix hot water is recommended but not needed here is a simple method.
This multipurpose pressure washer concentrate is great for use on vinyl brick sealed concrete stucco painted wood and plastic.
This is very effective at getting rid of algae and mildew both of which often grow on metal roofs.
You only need low pressure on metal roofs as it is enough to disturb and clean them.
We use a 5 5 gallon system just for this reason.
We recommend hot water because metal roofs can handle it and hot water is more effective.
Mixing tsp for roof cleaning.
Discover the best ways to remove rust mold and algae from metal roofing without damaging it.
We recommend one with a 40 degree tip.
Consumer reports experts share pressure washer cleaning advice for your deck roof siding car and more.
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.
When used on a flat tip it is very effective and quick to get rid of algae mildew mold and other debris.