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-   -   cement joints (http://www.diychatroom.com/f19/cement-joints-75662/)

Tommy T 07-07-2010 08:41 PM

cement joints
 
have pool deck, boards were used at the concrete joints when the deck was poured. boards are rotten what do i need to use to fill in the joints

Ron6519 07-07-2010 09:35 PM

New boards.
Ron

jlhaslip 07-07-2010 10:10 PM

remove the old boards, fill the gap with ethafoam (foam rope) and a butyl caulking over that.

stadry 07-08-2010 06:05 AM

remove 'em, of course,,, then clean the conc sidewalls well & install closed-cell backer rod about 1/2" below the conc's surface,,, best to use a size that needs to be forced into the jnt meaning you won't find it in any apron store,,, industrial or const supply house will have it,,, then seal the jnt w/sika np1 PER DIRECTIONS ! ! ! there are other mtls but you can, at least, find this at your apron store's masonary aisle,,, polysulfide, polyurethane, or 100% silicone's the mtl you want to use im-n-s-h-fo,,, would never use butyl acrylic


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