The most common thickness of tile backer board is 1 2 inch.
Tile backer board detail.
It s typically available in 1 2 in.
Quarter inch and 5 8 inch thicknesses can also be found.
Use 5 8 inch backer board as a fire rated material similar to type x drywall.
Then apply a generous amount of thin set to the bottom bathtub tile and position it 1 8 in.
Joint details for cement backerboard under tile.
Cement board is the most durable trouble free tile backer for tub surrounds showers floors and all other wet areas.
Apply it to the wall with the bottom edge about 1 4 in.
Thick 3 x 5 ft.
Leave a 1 8 to 3 16 inch gap between adjoining sheets of backerboard and at edges.
Just before tiling fill the joints with thinset and cover with 2 inch wide fiber mesh tape unless the adhesive manufacturer recommends otherwise.
Durock glass mat tile backerboard combines the tile bond of cement board with the handling and ease of use of a sheetrock brand panel.
Its made from cement and sand and is reinforced by fiberglass mats on both sides so it s impervious to water.
Above the lip of the tub.
Use 1 4 inch backer board on curved applications or on vertical surfaces such as fireplaces.