What's the best way to attach the framed 2x4's to the concrete basement walls and floor?
How To Attach Wood Post To Concrete Wall. 3 attaching wood with mortar nails. Fortunately, there are many ways to make the transition from concrete floors and wall frames to wood floors and drywall.
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When attaching to solid masonry, you will have to install expansion anchors with a minimum diameter of ½ and set into the wall at least 2 ½. From standoff post base, up to uplift post base. Because the wood will want to be able to move and will regardless of how you attach it, i'd use an adhesive i've used liquid nails like vic suggested to stick wood to concrete and it definitely holds tight.
Elevated post base anchors add clearance to keep wood away from the same methods will work for a shed with a joist or joist and beam floor on the slab.
Fortunately, there are many ways to make the transition from concrete floors and wall frames to wood floors and drywall. How do you attach wood to concrete without drilling? To attach a wood handrail post to concrete: Attaching a wood post to a deck's concrete footing, a concrete walkway, patio or porch slab is it's just a post bracket that attaches right to the concrete.