Prime the siding using a paint roller first coat the roller with primer.
How to paint aluminum siding.
Then paint with two coats of acrylic paint.
Coat your roller in primer and roll quickly and evenly along the panel of siding then roll backward in the opposite direction.
Or you could wash it by hand with tsp or a similar product available at home centers and paint stores and rinse it thoroughly.
Then roll along the panel of siding quickly but with even pressure to be followed by moving backward in the opposite direction.
The best way to get this siding clean is to power wash it.
In this video toh expert shares his tips and demonstrates how you clean and prepare the surface for painting.
Check the label to be sure it s recommended for metal siding.
If you need to paint aluminum siding choose a day when the weather is at least 50 f 10 c and dry since moisture from rain or dew will ruin a new paint job.
2 to 4 hours per 100 square feet of siding.
The key to painting aluminum siding is to get it really clean and to use 100 percent acrylic latex paint.