Do You Need Durrock Under Tile If Have Vinyl Subfloor

Preparation for installing floor tile depends on the type of subfloor in the room you are tiling.

Do you need durrock under tile if have vinyl subfloor. Concrete and wood subfloors each have their own subfloor preparation. You can have 5 8 osb and 19 2 oc joists and it still works. Do not line up the second layer with joints in the first layer. If you want to know why it s because it pretty much doesn t matter what the subfloor is under that plywood.

When you install your vinyl on a wood subfloor the top plywood should be a minimum of 1 4 thick. The obvious drawback is that the height of the floor gets to be pretty high at times and you have to watch the height of exterior doors etc. For most subfloors you will need to add an extra layer of wood. In most cases as long as the old vinyl surface is flat you don t need to do anything more for this type of underlayment.

For more information download our pdf about types of subfloors. It supports your decorative floor finish whether it s carpet hardwood vinyl laminate or tile. 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. According to backer board manufacturers and tile setters installing backer board directly over an old solid.

The best method is to refasten the subfloor then add a layer of plywood. Concrete expands and contracts and that type of movement can also crack the tiles and the grout. However you re not out of the woods. Wooden subfloors in older houses need to be strengthened and stabilized before backer board and tile are installed.