Then paint with two coats of acrylic paint.
Sanding aluminum siding before painting.
There are ways to safely clean your house before painting using a pressure washer including using lower psi pressure washers widening the spray and standing at least two feet back.
Use a scraper to remove loose paint from the siding working from every direction.
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Wash any areas where you have repaired the siding before proceeding.
Start by sanding the surface with 80 120 grit sandpaper or wire brushes which will give the primer and paint something to hold on to.
Sand the metal surface with coarse then fine grit sandpaper.
Pound in any protruding nail heads.
Thoroughly clean the aluminum and let dry.
Over time the aluminum siding builds up mildew and can begin to look chalky or the paint color may fade.
You want the absolute best adhesion surface for your paint.
As mentioned before 100 percent acrylic latex paint is the best paint to use to paint aluminum siding.
You may want to use rough sandpaper 80 grit and then gradually finish with fine sandpaper 220 grit to even the surface.
Apply self etching primer let dry then sand again.
Help the scraped areas blend in by gently sanding the edges.
The best way to address these issues is to repaint the siding.
You need to scrape off peeling and flaking paint and then chisel out any old caulk lines and apply new ones.
Make sure you sand down in only one direction.
Work a paint scraper from every direction keeping the blade flat against the wood so you don t create gouge marks.
There s still more preparation to address before painting aluminum siding.
Sand down the siding.
If a section has more severe damage you may need to replace it with a new section of aluminum siding.
If you notice any peeling paint scrape it away to make the siding smooth.
Apply paint multiple coats and.
Required tools for this how to paint aluminum siding project have the necessary tools for this diy project lined up before you start you ll save time and frustration.
2 to 4 hours per 100 square feet of siding before you paint aluminum siding clean the surface thoroughly and prime the siding with one coat of acrylic primer.
Then prime the aluminum with an oxidizing primer made specifically for metal which will help inhibit rust from forming in the future.
In this video toh expert shares his tips and demonstrates how you clean and prepare the surface for painting.