All of the chalkiness must be washed and scrubbed off and any flaking paint removed.
How to paint chalky aluminum siding.
Paint aluminum siding with acrylic.
The best way to get this siding clean is to power wash it.
The key to painting aluminum siding is preparation and priming.
Expect to pay the premium for good paint.
This substance if not removed will affect how well the paint can adhere to the siding.
This is called chalking and it means your siding will need a primer.
If vertical paint up to down.
Read on to find out more.
Apply one coat of acrylic primer.
Once everything is clean and dry you re ready to apply your primer.
This ensures even coats and will prevent you from missing any spots.
This oxidation that occurs on aluminum siding results in the build up of a chalk like substance on the siding itself which can easily be seen by wiping your hand across the aluminum.
Have you ever wondered if you can paint aluminum siding.
Sand down the siding with 150 grit sandpaper before you apply the primer or the paint.
As a rule of thumb paint takes two hours to dry.
To test the dryness of your paint touch the siding with your finger in an inconspicuous area.
The key to painting aluminum siding is to get it really clean and to use 100 percent acrylic latex paint.
If the paint no longer feels tacky or sticky it s completely dried.
Then follow up by two coats of acrylic topcoat paint.
Or you could wash it by hand with tsp or a similar product available at home centers and paint stores and rinse it thoroughly.
If you have put latex paint over the aluminum in the past and it is peeling or flaking you will need to scrape the peeling paint away before applying new paint.
Here s where a lot of people make a mistake.
However you may find this too time consuming so cleaning with a pressure washer will likely work well enough to get ready to paint.
In a nutshell you need to start with a clean palette.
If your siding is horizontal paint left to right.