In a nutshell you need to start with a clean palette.
Painting aluminum trailer siding.
Once everything is clean and dry you re ready to apply your primer.
If you are painting straight over an aluminum sided trailer you will want to use a primer that is meant for direct to metal application.
Then wash your rv and let dry.
With that said i have had pretty good success with behr marquee exterior paint and primer in one.
The key to painting aluminum siding is preparation and priming.
How to paint aluminum rv siding.
The best way to get this siding clean is to power wash it.
It goes on nice and smooth and covers beautifully without the uses of an added primer or extra coats.
Finally use an aluminum oxide primer before using a good acrylic latex paint.
Once you have completed the paint job remember to remove the tape as.
Coat your roller in primer and roll quickly and evenly along the panel of siding then roll backward in the opposite direction.
You must take a few extra steps if you want the paint to continue to look good down the road.
All of the chalkiness must be washed and scrubbed off and any flaking paint removed.
The key to painting aluminum siding is to get it really clean and to use 100 percent acrylic latex paint.
Some paints claim they are fine to use on bare aluminum and may work fine in some applications but if you want the finish to last do the preparation correctly.
The key to painting your rv s aluminum siding is to make sure that the paint you use will adhere to aluminum.
Expect to pay the premium for good paint.
Check the label to be sure it s recommended for metal siding.
After that tape off anything you do not want covered in paint.