I'm planning to float laminate over my existing floor, but need to level it first. The floor area is very large, so it spans areas of the home that have differing subfloor materials: concrete, hardwood oak, and plywood. My plan is to use self-leveling compound across all the subfloor materials to make them consistent, level and flat. However, in order to pour the compound, I read the wood areas need to be sealed first with a primer.
Home Depot sells "LevelQuik Advanced Acrylic Primer" for sealing OSB or Exterior Grade Plywood, but this product does not work with hardwood flooring like oak; I confirmed this by calling the manufacturer.
At this point, I'm not sure how to seal my oak floor in order to pour self-leveling compound on top of it. Is it possible? I'd like to avoid ripping up the oak floor and replacing it with OSB or Exterior Grade Plywood, so it can then be sealed and leveled.