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Old 08-05-2012, 09:54 PM   #1
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Questions about sealing joints for deck repairs

I plan to replace the wood on the railing cap of our deck. Instead of the usual caulk I was thinking of using polyurethane to seal the joints. Poly is more expensive, is this idea good?
Also instead of priming and painting the ends of the wood after I cut them, I was thinking of using that clear wood preservative, because it would be faster. But would caulk stick to a wood surface that has been sealed with preservative?



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Old 08-06-2012, 06:56 AM   #2
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If you are using pressure treated wet lumber it will not work to well with anything sticking to it until it has a chance to dry out some over time. A good construction adhesive - Glue at the seams/joints will not hurt though..


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Old 08-06-2012, 09:22 AM   #3
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Many times we have been installing composit decking on top of the top rails.
It acts as a protective cover over the wood so there's no more splitting and slivers to deal with.
Constrution adhesive and screws coming up from the bottom, not the top makes for a nice clean look.
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