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Inspect wood for
fungus and if present treat as recommended in the "Remove
Fungus" section. If the wood surface is rough it should
be sanded smooth with a medium grade sand paper. Be sure
to sand with the grain, never against it, diagonally or
across the grain. Wipe away any dust with a cloth. To achieve
the smoothest appearance, apply a coat of water to the wood
with a wet but not soaking cloth. Allow it to dry 30 minutes
to raise the grain of the wood. Sand with fine paper to
remove the raised grain. This will avoid grain raising when
applying primer, paint or other coatings. Use a stain-blocking
primer applied in a heavy coat and allow it to dry overnight.
A second coat can be applied if staining is evident. Solvent-based
stain-blocking primers are most effective over high-staining
woods such as mahogany and redwood. Light sanding may be
required before a finish coat is applied. Follow manufacturer's
recommendations for best results. When using solvent-based
primers, proper ventilation is required along with use of
a respirator.
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