All of the chalkiness must be washed and scrubbed off and any flaking paint removed.
Painting aluminum siding roller or spray.
A finish with gloss can draw more attention to dents or other blemishes in the siding.
Spraying paint not only requires masking off edges and trim as you do with a roller.
The key to painting aluminum siding is preparation and priming.
Choose a paint recommended for metal.
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.
Prime the siding using a paint roller first coat the roller with primer.
When you are using a paint sprayer to apply your paint you will need to thin the paint.
You also have to mask off every single thing you don t want touched by.
The key to painting aluminum siding is to get it really clean and to use 100 percent acrylic latex paint.
In a nutshell you need to start with a clean palette.
Start painting at the top and work your way down.
As you go smooth.
Many professional painters combine spray painting roller painting and brush painting depending on the exact surface being painted.
Coat your roller in primer and roll quickly and evenly along the panel of siding then roll backward in the opposite direction.
The lower shine finishes hide those flaws better.
Then roll along the panel of siding quickly but with even pressure to be followed by moving backward in the opposite direction.
Exterior acrylic latex paint works best on aluminum siding.
While it can take some doing to clean your roller brushes and equipment it s not nearly as bad as having to clean the spray gun reservoir bottle and everything else connected to the gun.
A paint sprayer can apply even coats of paint and apply paint in tight crevices that a roller simply cannot reach.
Both a sprayer and a roller are messy.
Painting aluminum siding with a paint sprayer hvlp paint sprayers are highly recommended will create the best finish.
The best way to get this siding clean is to power wash it.
Wield your paint roller from left to right if the siding is horizontal or up and down if the siding is vertically oriented.
Check the label to be sure it s recommended for metal siding.