Paint Chalking Aluminum Siding

Not adequately sealing a porous surface.

Paint chalking aluminum siding.

The key to painting aluminum siding is to get it. The primer should be 100 percent acrylic and specifically manufactured for outdoor painting. Primer does two important things. Coat your roller in primer and roll quickly and evenly along the panel of siding then roll backward in the opposite direction.

Aluminum should be painted with a self etching primer designed for metal. This is called chalking and essentially is the existing paint breaking down from the weather. There are several steps in dealing with a chalky surface to ensure a long lasting paint. Second primer creates a uniform surface that is ideal for paint adhesion.

Use of an interior paint for an outdoor application. Use of a low grade highly pigmented paint. This particular brush has a hole in the end for water to pass through. Have you ever wondered if you can paint aluminum siding.

In this video toh expert shares his tips and demonstrates how you clean and prepare the surface for painting. You can paint it. A siding brush has soft bristles that won t scratch the paint or gouge the aluminum like other hard brushes. Rub siding with cloth to check for powdery paint pigment and mildew.

Wipe the surface with the palm of your hand. Factory finished siding can develop an excessively thick chalk layer and may require power washing to ensure complete chalk removal. Steps for painting aluminum siding 1. Here s how to prepare the surface and choose your paint.

One of the most important aspects of a paint job is the prep work. If after two tries of hand scrubbing or power washing there is still chalk on the surface simply use a primer before repainting the aluminum siding. Scrub off the chalk with a strong solution of water and spic and span or tsp detergent or a nonphosphate tsp alternative. One of the hardest surfaces to prep is a aluminum or vinyl siding that is chalky.

Primer is one of the most important steps when painting aluminum siding. Chalky surfaces will cause the paint not to adhere correctly to the surface and will cause premature peeling. 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. If the paint color comes off on your hand the paint is chalking.

Oil based paints tend to chalk more than latex formulations. It doesn t take much effort to scrub away the debris once the tsp has loosened it up. This primer will cover up the chalk and allow the new paint to bond with the aluminum siding. First it seals the aluminum to prevent the chalky oxidation from happening under your paint.

If your aluminum siding has developed a chalky residue or is faded stained or just plain the wrong color fear not. Then paint with two coats of acrylic paint.