How much?
what kind of plywood floor?
Why do you need to do this??
Plywood, fiberboard, or cement board is the best underlayment for floors, depending on the type of floor being installed. An underlayment provides more stability and a smoother surface to the finish floor.
Many 'industrial' adhesives available in 'caulk' tubes will glue plywood to cement. PL Premium is one of the best.
If it sits over a cement floor, then no. If it is a nailed down floor, then you can, but you still have to install a cement board.
It would depend on the type of floor you are installing. There haven't been enough details about the project provided to answer this question thoroughly. If you are installing engineered hardwood just lay down a 3/4" piece of plywood and a moisture barrier. If you are installing a floating floor, use a moisture barrier and two 1/2" pieces of plywood. see related links
No, luan is a plywood and wood is naturally porous.
You couldn't tile directly over a plywood sub-floor because over time, the wood will be expanding. There are products you can use in between the plywood and tiles to keep them in place such as cement backer board.
If you want to raise a sagging floor, you can put a piece of plywood on the floor. You can then add new flooring over the piece of plywood.
the floor was turned into hearth cement.
Plywood, fiberboard, or cement board is the best underlayment for floors, depending on the type of floor being installed. An underlayment provides more stability and a smoother surface to the finish floor.
Many 'industrial' adhesives available in 'caulk' tubes will glue plywood to cement. PL Premium is one of the best.
Improper installation. You must install cement board over the sub floor before you tile. If the tile was glued to plywood which is not waterproof, the plywood will absorb moisture which will cause the grout to crack and deteriorate
you have to pull the linoleum up to lay tile. . .i would suggest a cement backer board over the existing plywood also
This is a theoretical question, right? Use bullets. But if that isn't an option, lay the dog on a cement floor. put a piece of heavy plywood (non-bending) over the dog. You now need to put sufficient pressure on the plywood that the dog's chest cavity cannot expand. Keep it that way for a couple minutes. The dog will be dispatched. BUT this is not humane; I put this answer down for informational purposes only, do not do this. See a vet.
No, plywood alone is not strong enough for ceramic tile. These floors require a very sturdy subfloor at least 1 1/4" thick before the tile. This requires either using cement board or a pored mudbed.
I used plywood to build my sentence. That box might be made of plywood or solid wood. The treehouse has a plywood floor.
Yes, it is excellent for that.
You need 1 1/4" of subfloor. Typically it is 3/4" of plywood or OSB and 1/2" of mudbase or cement board.