Q: Is the presence of multiple wormholes acceptable in #1 common red oak hardwood flooring (up to 39 holes in one 47” plank)?
A: It is a lower grade of wood. The lower the grade, the more (character) marks are permitted, including knots, worm holes, wide colour variations and black mineral streaks. I don’t recall ever reading of a specific number of worm holes being aloud. If they are tiny holes they could be filled or just set that board aside. If it has already been installed it can still be removed and replaced.by