Allow it to dry for two or more days before continuing.
Best way to clean metal barn siding for painting.
For aluminum siding use a pressure washer set on low to spray the metal siding and rinse the rust off.
The cloth will likely come up dark gray with a layer of fine soot.
Add liquid soap to the water to get the grime off.
Galvanized metal roofs shed more easily than shingles or tiles and this makes them useful in places where leaf acorn and pine and.
Put on safety goggles fine particle mask long sleeve shirt and rubber gloves.
Tsp can burn skin and irritate eyes.
Mix 1 3 cup laundry detergent to 6 gallons of water.
This will be the cleaning solution to clean your steel siding.
While a power washer might be a little too aggressive for wood or vinyl unless you re a professional it s the best tool for cleaning steel siding.
Step 3 fill the cleaning solution fill your power washer with the cleaning solution.
Then rinse off the siding again with clean water.
Chemicals you might use on wood or vinyl siding can cause damage to steel.
Even after pressure washing you may still find that a thin layer of dirt remains on the siding.
Tsp is technically known as trisodium phosphate and is a strong cleaner that removes dirt and wax on metal.
It can also irritate your lungs.
As an experiment rub a clean white cloth across the unwashed siding.