Not adequately sealing a porous surface.
Chalked paint and oxidized aluminum vinyl graphics.
Oxidation can be cleaned from most vinyl siding but the process.
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.
There are several steps in dealing with a chalky surface to ensure a long lasting paint job.
Spreading the paint too thin.
Chalky surfaces will cause the paint not to adhere correctly to the surface and will cause premature peeling.
Paint will not stick to a dirty surface.
Use of an interior paint for an outdoor application.
A dull chalky paint finish comes off when touched and makes a home s exterior paint job look dated.
One solution for dry faded plastic is to use a vinyl restorative product on it.
Over thinning a coating e g.
You can also use a primer between the vinyl and the paint.
Use of a low grade highly pigmented paint.
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.
Be sure your vinyl is clean before applying paint by washing it with soap and water and rinsing well.
A chalky white substance on your vinyl siding and trim is caused by oxidation which occurs most often during damp or wet weather.
Factory finished siding can develop an excessively thick chalk layer and may require power washing to ensure complete chalk removal.
Chalking due to oxidation is the paint s natural response to.