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Tile underlayment membrane vs backer board. The question is which will be a more effective sidekick in your fight to keep your floor tile victorious. I install a tile floor over backer board did not use tape never had a problem before i have a few stress crack floor is solid what type of membrane could i use to tile over. At tile pro depot we highly recommend laticrete strata mat. Backer board is very hard.

This is the industry standard most preferred by construction pros when installing ceramic or porcelain tile backer board comes in four foot by eight foot and three foot by five. Fiber reinforced water resistant gypsum backer board densshield. Concrete backer board has a solid concrete core and both sides are faced with fiberglass. Uncoupling membrane cementboard has replaced a manually applied mortar bed to emerge as the standard underlayment for a tile floor.

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. Installation is simple just trowel a layer of thin set adhesive on the floor and embed the mat in it then fill the cavities with thin set. The completed assembly takes the place of more traditional backer board when installed over 3 4 inch wood subfloors. It s waterproof which makes it ideal for wet area installations.

Two common types of underlayment are ditra a flexible plastic decoupling membrane explained later and cementitious backer units also known as cbus cement board or cement backer board. This laticrete uncoupling membrane and mat is thin easy to install lightweight and high performance. Concrete backer board durock and wonderboard which is the standard material for tile underlayment. In many ways however an uncoupling membrane such as schluter ditra is an even better backing material for reasons other than the fact that it doesn t raise the height of the floor as much as cementboard.

It provides an excellent underlayment for ceramic tile and stone installations on wood and cement substrates and is suitable for both residential and commercial applications. Whatever it is called cement based backer board is what the name suggests. Fiber cement backer board hardiebacker and fiberock which is fiber reinforced for strength and durability. Uncoupling mats can also be easily cut with a utility knife with no dust while it s more difficult to cut backer board because it s made of cement.

A layer of cementitious material faced with fiberglass mesh to hold it together.

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