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Wood
Siding
and Trim/Bare Wood/To Be Painted
a.
Surface Preparation:
- new
wood should be painted promptly (within a few weeks) because weathering
of the wood will reduce adhesion of primer and paint
- however,
moisture in treated wood left from the treatment process should
be allowed to dry prior to painting; once constructed, two weeks’
exposure to the weather should be adequate for most siding materials;
thicker timber may take longer
- dull
any shiny (mill glazed) areas with fine grit (#220) sandpaper
- treat
any mildew with a 3:1 water:household bleach mixture, leaving
it on for 20 minutes and adding more as it dries; wear eye and
skin protection; rinse thoroughly;
- refresh
the surface of any weathered wood by sanding with medium grit
(#120) garnet paper, sanding in the direction of the grain
b. Priming:
- apply
a quality exterior latex or oil-based stain blocking primer
- apply
2nd coat if primer exhibits stain bleed through
- do
not leave a primer unpainted
c. Painting:
- use
top-of-the-line exterior 100% acrylic latex house paint in flat,
satin, semigloss or gloss finish, depending on appearance desired
- two
coats will enhance hiding, mildew resistance, sheen uniformity
and durability
- a
quality oil-based or alkyd paint may be used (use oil-based primer),
but quality acrylic latex will provide better color retention,
mildew resistance and long term crack resistance
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