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.
For floor underlayment, consider using materials like plywood, cement board, or foam underlayment. These options can provide a smooth and level surface for your flooring installation.
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.
To attach cement board to plywood effectively, first ensure the plywood is clean and dry. Use corrosion-resistant screws or nails to secure the cement board to the plywood, placing fasteners every 8 inches along the edges and every 12 inches in the center. Make sure to leave a 1/8 inch gap between boards for expansion. Apply thin-set mortar or a cement board adhesive before attaching the cement board to the plywood for added strength.
you have to pull the linoleum up to lay tile. . .i would suggest a cement backer board over the existing plywood also
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
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.
The recommended plywood thickness for floor installation is typically 3/4 inch.
To level a sloping floor using plywood, you can first identify the low points on the floor. Then, cut plywood shims to fit those areas and place them underneath the plywood subfloor to raise it to the desired level. Secure the plywood shims in place using construction adhesive and screws. Finally, cover the entire floor with a new layer of plywood to create a level surface.