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I'm looking to install recycled hardwood. During the demo most of the bottom part of the grooves has been broken off. Will the effect how well it will stay down after it's installed?

  • Can you provide a photo? I can't tell from your question if you are saying that the bottom part of the tongue and groove is broken off or something else. – Keith Hoffman Nov 12 '14 at 21:12
  • If the tongue-and-groove has turned into shiplap ... yeah, that will affect it somewhat, making it more vulnerable to moisture changes and the like. You could get a router and machine a new groove (letting the boards become a bit narrower)... or you could just start recycling the wood into picture frames and other projects and put down new flooring. (I have a pile of old oak flooring that might be in good enough condition to reuse, but it's more likely to turn into picture frames and so on.) – keshlam Nov 12 '14 at 22:13
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That depends on how you plan to re-install it. If you plan on face nailing it's fine to just lay it down as though it were a ship lapped. This might sound a bit half arsed to some but I've seen reclaimed flooring face nailed down with cut nails (into the joists) and it looked very nice. You can run a bead of construction adhesive down the seams for a little added insurance if your worried about it lifting.

If you want to install it as it was intended to be installed, you need that bottom shoulder because it's what you nail through, which is probably why it broke off in the first place. In this case you can re-groove it easily enough with a router, dado stack, or shaper just make sure to check it for shrapnel first or you may be sorry. Good Luck!

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