Or you could wash it by hand with tsp or a similar product available at.
Best paint for painting metal siding.
The good news is that metal siding is one of the best surfaces to repaint.
The process of repainting pre finished metal siding is a little different than it is for other types of exterior surfaces.
Step 4 retouch.
The key to painting aluminum siding is to get it really clean and to use 100 percent acrylic latex paint.
This information is essential to know even if you have pre finished metal siding.
You have to know how to paint steel siding the best paint to use and how to prepare it for the paint.
The best way to get this siding clean is to power wash it.
Repeat the procedure until you cover all the steel siding.
As with all exterior painting projects proper surface preparation is the key to restoring your metal siding.
Check the label to be sure it s recommended for metal siding.
Expect to pay the premium for good paint.