Does Bath Floor Need A Sub Floor Board

Osb is a composite of glue and strips of scrap wood in.

Does bath floor need a sub floor board.

According to backer board manufacturers and tile setters installing backer board directly over an old solid. The finished floor is then installed on top of the subfloor. Arrange the plywood on the floor so the joints of this layer do not align with the subfloor joints below. I plan on thinsetting and screwing cement board to the subfloor then redgard then thin set and tile.

The thickness of plywood. It is attached to your home s floor joists and acts as a base for your finished flooring such as carpet hardwood laminate tile etc. Would this calculation get me to the right height compressed thin set on top of sub floor 1 8 cement board 1 2 compressed thin set on top of cement board 1 8. The subfloor is the decking installed on top of flooring joists.

By choosing the right material from the start your bathroom will stand a better chance of withstanding long term damage. Allow 1 4 inch gap along the walls and between the joints for expansion. Typically a subfloor is made of plywood or oriented strand board osb panels. It is generically called cement board or backer board or it can also be referred to by one of the common brand names such as densshield hardiebacker and wonderboard.

What size plywood do i use for a subfloor. Now largely regarded as the very best underlayment for ceramic tile in any application floors walls and countertops cement based backer board goes by many names. When installing a ceramic tile floor on a concrete subfloor you don t have to worry about flexing as long as the concrete slab is at least 1 1 8 inch thick which most slabs are. Wooden subfloors in older houses need to be strengthened and stabilized before backer board and tile are installed.

The best method is to refasten the subfloor then add a layer of plywood. If the subfloor doesn t have enough stability you can usually but not always remedy the situation by installing cement backer board also called cementboard. What is a subfloor. For more information download our pdf about types of subfloors.

Excess moisture in the subfloor is a common reason for early replacement of bathroom flooring but it can be prevented by choosing the right material from the beginning. Depending on when a home was built a subfloor could be made from softwood boards like pine or fir plywood or osb oriented strand board. It supports your decorative floor finish whether it s carpet hardwood vinyl laminate or tile. A subfloor is the solid material beneath your floor covering.

I need to match the height of the existing tile in the bathroom.