Does Bath Floor Need A Sub Floor Board

What size plywood do i use for a subfloor.

Does bath floor need a sub floor board.

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. Osb is a composite of glue and strips of scrap wood in. 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. A subfloor is the bottom most structural level of your floor.

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. Wooden subfloors in older houses need to be strengthened and stabilized before backer board and tile are installed. Arrange the plywood on the floor so the joints of this layer do not align with the subfloor joints below. The thickness of plywood.

The finished floor is then installed on top of the subfloor. By choosing the right material from the start your bathroom will stand a better chance of withstanding long term damage. 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. I need to match the height of the existing tile in the bathroom.

What is a subfloor. For more information download our pdf about types of subfloors. Cement based backer board. 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.

Allow 1 4 inch gap along the walls and between the joints for expansion. 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. Typically a subfloor is made of plywood or oriented strand board osb panels. Preparation for installing floor tile depends on the type of subfloor in the room you are tiling.

It supports your decorative floor finish whether it s carpet hardwood vinyl laminate or tile. The best method is to refasten the subfloor then add a layer of plywood. I plan on thinsetting and screwing cement board to the subfloor then redgard then thin set and tile. 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.

According to backer board manufacturers and tile setters installing backer board directly over an old solid.