The plywood will expand and contract at a different rate as the tile causing cracks to develop in the grout lines or tiles over time.
Installing floor tile over plywood.
Plywood underlayment is a thin plywood material that is most commonly used under resilient flooring materials such as vinyl and linoleum sheets and tiles.
A single sheet of 3 4 inch plywood is normally not adequate as a.
For wall installations plywood is overkill beneath the concrete or fiber board which is designed in five eighths inch material for wall settings.
To install bathroom tile over plywood you ll have to follow a series of steps.
Installing tiles over existing flooring removing existing flooring can be a tough job and it s one you may want to avoid especially if the flooring is glued down.
Plywood or osb flakeboard can expand and contract at too high a rate to be a stable foundation for tile.
A number of different types of substrate are used for tile including plywood.
Start by measuring the room.
Here are the basics of how to install bathroom tile on plywood.
But a number of precautions must be taken to ensure a successful installation.
Installing ceramic floor tile to a plywood sub floor has unique challenges beyond that of installation on a concrete floor.
This will cause either the tile itself to crack and even come loose or cause the grout to crack inside the joints.
On a plywood subfloor you need either a layer of cement backer board or an underlayment membrane like custom building products wonderboard and redgard between the subfloor.
The preferred method for tile installations is to use a sheet of underlayment.
Get the dimensions of the room and then multiply them to get the square.
This process is not complicated but you will need to be willing to do some work.
Before laying tile over any plywood subfloor it s important to make sure that the floor itself is free from excessive deflection or bending which can pop grout joints and loosen or crack tiles.
This guide will show you how to prepare your subfloor for a tile installation project to ensure that it s fit to support ceramic or porcelain tile.
While most floor tile these days is installed onto a layer of cement board or similar backerboard it is possible to lay tile directly over plywood.
A glass of water can detect deflection that s otherwise hard to see with your eye.
It can also be used under hardwood laminate and carpet but this is much less common these days because subflooring is typically smooth enough for these materials many of which are installed with a different type of underlayment or pad.
Preparing a subfloor is an essential step for installing floor tile it provides a level surface that will allow the tiles to properly stay in place.
If possible you should always use concrete board underlayments rather than plywood.
