Paint Chalking Aluminum Siding

Some exterior paints such as those used on aluminum siding intentionally chalk for self cleaning.

Paint chalking aluminum siding.

Steps for painting aluminum siding 1. This particular brush has a hole in the end for water to pass through. Primer is one of the most important steps when painting aluminum siding. Not adequately sealing a porous surface.

The primer should be 100 percent acrylic and specifically manufactured for outdoor painting. Use of a low grade highly pigmented paint. Aluminum should be painted with a self etching primer designed for metal. Chalky surfaces will cause the paint not to adhere correctly to the surface and will cause premature peeling.

First it seals the aluminum to prevent the chalky oxidation from happening under your paint. Then paint with two coats of acrylic paint. Scrub off the chalk with a strong solution of water and spic and span or tsp detergent or a nonphosphate tsp alternative. This primer will cover up the chalk and allow the new paint to bond with the aluminum siding.

Rub siding with cloth to check for powdery paint pigment and mildew. Coat your roller in primer and roll quickly and evenly along the panel of siding then roll backward in the opposite direction. Second primer creates a uniform surface that is ideal for paint adhesion. There are several steps in dealing with a chalky surface to ensure a long lasting paint.

If the paint color comes off on your hand the paint is chalking. Use of an interior paint for an outdoor application. Have you ever wondered if you can paint aluminum siding. If your aluminum siding has developed a chalky residue or is faded stained or just plain the wrong color fear not.

The key to painting aluminum siding is to get it. You can paint it. Here s how to prepare the surface and choose your paint. In this video toh expert shares his tips and demonstrates how you clean and prepare the surface for painting.

One of the most important aspects of a paint job is the prep work. Primer does two important things. One of the hardest surfaces to prep is a aluminum or vinyl siding that is chalky. Inspect the siding for mildew powdery paint pigment and mildew.

Factory finished siding can develop an excessively thick chalk layer and may require power washing to ensure complete chalk removal. 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. Oil based paints tend to chalk more than latex formulations. This is called chalking and essentially is the existing paint breaking down from the weather.

Wipe the surface with the palm of your hand. 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.