Installing Backer Board On Concrete Slab

Smooth the mortar so it extends about 1 1 2 inches on each side of the joint.

Installing backer board on concrete slab.

The kitchen that i m working on has concrete slab i m putting a 3 8 porcelain tile in the kitchen floor. All i have a question regarding the hardie cement backer board apply on concrete slab. Anyone can enjoy the benefits of a cement board shower system if you follow these 3 easy steps. The other is foam backer board which is ok to install over concrete.

Using cement boards over concrete floors for ceramic tile installation. To install cbus they must be attached to the substrate with nails screws or staples every four to eight inches in both directions. There is no need to install backer board on a concrete substrate ceramic tile can be applied right over concrete provided the surface is flat smooth and free of significant cracks. But because the rest of the concrete slab was not at the same height as the new tile throughout the house the licensed tile contractor installed hardiebacker cement board with thinset to raise the slab in prep for tiling.

The tub was removed the old concrete jackhammered out and the new pan was poured for a curbless shower. Replace any loose warped uneven or damaged sections of floor. Technically cement board can be laid over a concrete slab as the base for a tile installation. But doing so is a very laborious time consuming process that is likely more trouble than it is worth.

Make sure subfloor is dry level and fastened correctly. If installing hardiebacker cement board over existing floor ensure the floor is flat and floor covering is thoroughly adhered to the subfloor. Measure the floor and determine if and where you can use whole sheets of the cement board. Use the flat side of your notched trowel to fill the joints between the backerboard sheets.

This can be beneficial if you are wanting to insulate concrete from an electric floor heating system above it. Ensure subfloor is not damaged. Check with wedi schluter laticrete goboard or whichever manufacturer to see how they want their product installed over a concrete subfloor. The extra mortar will make it easier to.

A better solution is to prepare and resurface the concrete slab so that it can accept thin set adhesive or a mortar base onto which to lay tile. They typically come in 3 foot by 5 foot sheets. I want to raise the floor as much as possible to match the adjacent living room floor level about 1 1 8.