The key to successful painting of aluminum siding is oil base primer.
Prime aluminum siding with oil based or acrylic.
As good as latex primers are these days don t use them in this situation because chemicals in the mix will react with the aluminum.
Overtime those bubbles can show or cause the paint to bubble and flake.
Latex primer can cause a chemical reaction with the aluminum that forms small gas bubbles.
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You will have to wait longer for an oil primer to dry but it s better than having to re do everything within a year or two.
Aluminum and tempered hardboard are all easily finished with the z prime.
Once the primer is dry top coat with a 100 acrylic paint.
That said the paint itself should be the highest grade of 100 acrylic exterior latex you can find.
Prep aluminum siding well before using paint or primer.
As one who does part time painting on the side i keep a can of rust oleum z prime in my trunk as it is something i use a lot especially on metals.
Choose a primer made for metal for the best results.
Primer comes in both latex and oil based.
Rust oleum stops rust 1 qt.
Most high quality paints will apply directly over aluminum siding without the need for a primer but make sure you read the manufacturer s recommendations on the can before you grab one off the shelf.
Then apply two coats of a 100 acrylic latex paint by whichever application method you prefer.
Painting aluminum siding is best with oil based paint and a good acrylic metal primer.
Oil based paint oil based paint creates a stronger and more durable finish making it an excellent choice for exterior paint projects.
While you can use either oil based primer tends to work better on aluminum.
Flat gray water based interior exterior aluminum primer 2 pack model 8781402 57 96 case 28 98 can 57 96 case 28 98 can free delivery.
Best for latex acrylic paint.
Rust oleum z prime superfast oil based primer.