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Posted by Dioclese on April 25, 2008, 10:53 am
>
> I've spoken to a number of people who have put composite decks in and they
> followed the manufacturers suggestions carefully and ended up with boards
> that just "seem" too far apart. A friend of mine has these large gaps
> around his posts that I'm not particularly fond of.
>
> And two of these people say they've never seen the boards expand nor
> shrink the way the manufacturer warned. I'm not sure of the brands.
>
> But this reminds me of something a construction guy told me once about PT
> (I know, a different issue): "Don't ever listen to the advice about
> keeping the boards a nail width apart....they will dry and shrink on their
> own". The only reason I mention this is because I would like to know to
> what degree such rules of thumb (PT or composite) are real, or just passed
> along advice that never really applies.
>
> For example, has anyone seen trouble with compostite decking boards placed
> flush (say, in the summer)?
>
> Thanks!
Don't know anything about composite.
Treated lumber, like any other lumber, absorbs water. In that process, it
expands. As an example, treated lumber placed immediately next to the next
deck plank sequentially may buckle. This is because the board expands and
may cup either way as well as a result. There is no room for expansion.
Would suspect that composite may have the same property if it absorbs water
as well.
--
Dave
Hypocrisy. Big SUV, filament lights on all night. You think your neighbor
should be changiing to compact fluorescent light bulbs and driving the
hybrid.
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