We have a 40 year old home on a hill with a reverse floor plan. The garage is on top floor and is made out of wood. Plywood over Planks over beams.
Over the years, dirt and grease has built up on top of the plywood. We would like to rip out the plywood, replace with new plywood and cover with some sort of water resistant material. We can not use concrete, as this is too heavy for the underlying beams.
What is the best material to use for this? Should we use some sort of epoxy or asphalt tiles or something else?
We'd like the new plywood floor to be as solid as possible, so we are thinking of exterior grade outside glue toung and groove plywood. Is this sufficient or should we go a different route?