Painting non-paintable caulk


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Old 12-16-06, 04:49 PM
J
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Painting non-paintable caulk

I went to my in-laws to paint stain on some new cedar siding they had put on their house only to dicover that it had been caulked with non-paintable caulk. Is there any solution to this? I think I can sand some of down, but the joints between the siding and the trim are a problem. Will putting a primer on first help. Any suggestions are appreciated. Thanks.
 
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Old 12-16-06, 05:58 PM
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Silicone caulk is generally unpaintable. Nevertheless, I believe you might get reasonable results from priming with Zinsser BIN, a shellac based primer. It will stick to pretty much anything. Then apply two finish coats.

Hope this helps.
 
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Old 12-16-06, 06:18 PM
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Are you using a solid stain?
Solid stain will cover primer, transparent stains will not.
 
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Old 12-16-06, 09:10 PM
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It is a solid stain. Hopefully, the primer will help. Thanks.
 
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Old 12-17-06, 06:11 AM
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The pigmented shellac should work fine. While shellac isn't a good primer for large exterior areas it will be fine for what you need - really the only choice other than removing the caulking. If the primer crawls more than a little over the silicone, apply a 2nd coat.
 
 

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