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Old 07-16-2010, 08:06 AM   #1
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2x6 lumber to a cement slab


how do I attach 2x6 to excisting cement slab to apply 3/4' plywood on top .

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Old 07-16-2010, 08:23 AM   #2
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2x6 lumber to a cement slab


I would use pressure-treated lumber only directly on concrete, and nail to slab with nail gun (concrete nails).
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Old 07-16-2010, 02:56 PM   #3
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2x6 lumber to a cement slab


Is this for a finish floor in a basement? Did you test for moisture? http://www.buildingscience.com/docum...ms?full_view=1

Don't forget the sill sealer under it for a capillary and thermal break. P.t. wood is not waterproof: http://www.greenbuildingadvisor.com/...-building-code
http://www.thompsonswaterseal.com/advice/faq.cfm

Be safe, Gary
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Last edited by Gary in WA; 07-16-2010 at 04:06 PM.
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Old 07-16-2010, 03:00 PM   #4
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2x6 lumber to a cement slab


Options include Phillips red heads (needs a rotary drill), 22 or 38 Ramset (rent the gun), concrete nails (very poor attachment), expansion anchors (install using a drill with masonry bit). As noted, lumber must be PT. I assume lumber is being installed flat face down, if you are attaching through the 5-1/4 inch side that is a different problem, let us know if you need to install the long way.
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