Spreading the paint too thin.
Chalked paint and oxidized aluminum vinyl graphics.
You can also use a primer between the vinyl and the paint.
Use of an interior paint for an outdoor application.
Be sure your vinyl is clean before applying paint by washing it with soap and water and rinsing well.
A dull chalky paint finish comes off when touched and makes a home s exterior paint job look dated.
There are several steps in dealing with a chalky surface to ensure a long lasting paint job.
Often the chemical breakdown or oxidation of plastic leaves behind a chalk like residue that lends a whitish appearance to the color making it look bleached.
Dyes also break down at different rates depending on color.
If your vinyl surface is clean the paint or primer will adhere to the vinyl rather than the dirt and you will have a longer lasting finish.
A chalky white substance on your vinyl siding and trim is caused by oxidation which occurs most often during damp or wet weather.
Not adequately sealing a porous surface.
One solution for dry faded plastic is to use a vinyl restorative product on it.
Chalky surfaces will cause the paint not to adhere correctly to the surface and will cause premature peeling.
One of the hardest surfaces to prep is a aluminum or vinyl siding that is chalky.
Paint will not stick to a dirty surface.
Use of a low grade highly pigmented paint.
Over thinning a coating e g.
Chalking due to oxidation is the paint s natural response to.