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Poor
Adhesion of High Solids Coatings
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CAUSE
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REMEDY |
| A |
High solids coatings (40% solids or more) show
delamination. |
Inspect the wood sanding process prior to
finishing. High solids coatings need a better wood profile to anchor to
then a low solids coating that contains more thinner. Many times in
sanding (especially hard woods like maple) the finishers will over sand
and polish the wood to where there is not enough profile to produce good
adhesion with the top coat. This problem can also be caused by the shop
using worn sanding belts. When utilizing high solids coatings (40%+) a
final sanding on hard woods should be done with 120-140 grit paper. This
will assure good adhesion to the wood. |
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