Instead first remove the existing surface material then install the cement board over the studs and membrane as applicable.
How to attach cement board to concrete wall.
The extra mortar will make it easier to.
Screws are the only logical way to do this but it would entail an extremely tedious and time consuming process of drilling pilot holes before sinking the screws.
Use a wood bit to drill pilot holes through the ledger board.
Locate a brand for.
Thin set alone will not help the cement board stick to the concrete slab.
Temporarily secure the ledger board to the correct location against the concrete wall using concrete screws or temporary supports.
Use the flat side of your notched trowel to fill the joints between the backerboard sheets.
The strips should be about 16 to 24 inches apart and fall in the center.
Smooth the mortar so it extends about 1 1 2 inches on each side of the joint.
Mix the thinset and water combination with either a paint stir stick or a paint mixing paddle attached to a power.
Measure the height of the wall from floor to ceiling.
Next use a concrete bit to drill into the concrete wall.
Add the correct ratio of dry thinset mortar and water in a bucket following the manufacturer s mixing instructions.
Determine where you will install furring strips along your block walls.
Anyone can enjoy the benefits of a cement board shower system if you follow these 3 easy steps.
How to secure concrete boards to a concrete wall 1.
Install your sleve anchors.