I am renovating the kitchen in an old (1915) house that has maple flooring under the 6 layers of luan and vinyl.The 2" wide maple boards are not very even and we want to put down vinyl planking. We are considering 1/2" subflooring. I can get 5 layer plywood or 1/2 OSB for the job. Any recommendations?

  • 2
    "Not very even" means not flat? Or not evenly spaced?
    – Huesmann
    Commented May 13 at 12:06
  • 1
    What do the instructions for your flooring specify? Are they OK with OSB, or do they insist on plywood?
    – FreeMan
    Commented May 13 at 12:33

1 Answer 1


Usually the only reason to prefer OSB over Plywood is that it costs less.

It's not as flat and it's more prone to water damage (this being a kitchen.)

If you can afford plywood, that's the better choice.

  • 1
    I have to dispute the "not as flat" statement. In my experience OSB is much more flat and stable than plywood, at least until it gets wet for a period of time. I've seen crazy warpage in BC plywood subfloor. Vinyl planks mostly eliminate the concern anyway.
    – isherwood
    Commented Jun 12 at 16:08

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