Fixing mistakes in painting wood shingle

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Old 09-19-06, 10:24 AM
t2q
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Fixing mistakes in painting wood shingle

Our house has wood shingle, and one side is connected
to a 3-season porch, so it is not exposed to the weather.
We want to paint the enclosed side and we thought we can get
away with using interior paint and primer to paint that side.

Now there are dark spots from the shingle
showing through the paint on that side. We guess that the
interior paint/primer don't fully bind to the wood (?).

Can we fix it just by painting over the shingles with exterior
primer/paint this time ? Or do we need remove the old paint first ?
If so, how ?

Thanks for any information.
 
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Old 09-20-06, 09:16 AM
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It is never a good idea to use interior paint on the exterior although some climates are more forgiving than others.

I believe the biggest problem you have is with the use of the wrong primer. You need a solvent base primer to lock in the tannins in the wood which are bleeding thru and discoloring the paint.

While it would be best to remove the latex paint it will probably be ok to paint over it. Use a good oil base primer!! The top coat can be latex.
 
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