Thick 4 x 8 ft.

Tile on drywall vs backer board. But it s the same purpose. In areas that are exposed to an abundance of moisture it is better to install a cement board as a backer rather than a gypsum board. Water resistant drywall is less expensive than cement or gypsum backer board but it shouldn t be used in very damp or wet areas. The rest of the bathroom walls on the other hand are usually covered in drywall.

We were planning on replacing most of that drywall with the mold resistant dry wall i think that s called green board but home depot and lowes keep pushing the cement board for the part that we re going to tile around the tub shower. After reading many comments on this subject i will use green board instead of backerboard or hardyboard to replace damaged old backsplash drywall. In areas of high moisture such as walls in a shower for long term durability it is not advised to install tile over drywall even if the drywall is type mr moisture resistant. Or you could use there s a georgia pacific product called densarmor which is a tile backer and that will work very well and it s a lot easier to use than sometimes the cement backer boards are.

Drywall panels fit between wall studs spaced 16 inches or 24 inches apart. When you tile a shower stall or tub surround you need a waterproof backing. Water resistant drywall is a good backer board choice behind sinks and other places where occasional splashing and high humidity could affect regular drywall. Cement backer board is a mineral based pre fabricated wall unit usually 1 4 inch or 1 2 inch thick and 3 feet by 5 feet long.

While not considered backer board water resistant drywall can be used in spaces where occasional splashes may occur but which are otherwise dry such as a glass tile backsplash in the kitchen. The paper came off the old drywall and some crumbled around the 70 year old electrical outlets and switches that will be replaced and moved anyway. Like regular drywall it s found at most home centers in 1 2 in. The one recommended by almost every building authority is cement board.

The sheets are made from a water repellent gypsum core covered by water resistant paper. This means you have a transition between the two materials at the edge of the tiled area. A cement board has many varied uses in home construction and is often preferred over greenboards or blueboards in certain areas of the house. Some people go directly to the drywall.

Right now the tile is attached directly to the dry wall. The smaller dimensions of cement board make the installation of it on large walls more difficult but cement board panels fit vertically in 3 foot wide showers or horizontally behind a standard 5 foot bathtub.

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