How straight should hardwood planks be?
I searched but couldn't find an answer to this. I know wood tends to curve and move and grow/shrink, etc. My question is: how straight should hardwood planks (3 1/4" wide x 3/4" thick, maple prefinished tongue and groove) be out of the box. They're currently acclimating, but the samples I pulled out - seemingly all of the longer boards have a slight curve to them. (side to side, not up and down - they're all flat) My builder says that's natural and the tools they use to tap and then nail them into place will take care of it. But I always like second opinions.