Poor Gloss Retention
Deterioration of the paint film resulting in excessive or
rapid loss of luster of the top coat.
Possible Cause:
-
Use if an interior paint outdoors.
-
Use of a lower quality paint.
-
Use of a gloss alkyd or oil-based paint in areas of direct
sunlight.
Solution:
Direct sunshine can degrade the binder and pigment of a paint,
causing it to chalk and lose its gloss. While all types
of paint will lose some degree of luster over time,
lower quality paints will generally lose gloss much
earlier than better grades. The binder in top quality
acrylic latex paint is especially resistant to UV radiation,
while oil and alkyd binders actually absorb the radiation,
causing the binders to break down. Surface preparation
for a coating showing poor gloss retention should be
similar to that used in chalking surfaces (see chalking).
|
