How do you remove cement board from wood subfloor?

Insert the tip of a pry bar into any crack or seam under the backer board. Pry up enough to get a grasp on it with both hands. Pull the backer board up and off the floor. Don’t worry if it breaks into pieces.

How do you break up cement board?





You can try driving a wide (4″ or so) flat chisel under the edge to pop sections off, but straight sledgehammering will probably be faster.

How do you remove old cement board from a wall?

Grasp the backer board firmly with both hands and apply outward pressure to remove the board. If you removed all of the screws that secured the piece, it should detach from the wall easily. If the material fails to detach from the wall, locate the remaining screws and remove them.

How do you remove fiber cement board?

Quote from the video:
Quote from Youtube video: Find all the other nails pop em out and then at some point the board's gonna get really loose and you're just gonna be able to pull it right off the wall. Be careful they're heavy.

How do you remove cement from a subfloor?

Using a hammer, and a chisel if necessary, repeatedly strike the thinset in an effort to loosen its bond with the subfloor. Take care not to hit the floor too hard, as damage to the subfloor could occur. As you loosen the thinset, use a metal scraper to remove it from the floor.

Can I just screw down cement board?





Doing this will require that you remove the existing surface material before installing backer board over the studs. Cement board can also be used on countertops when laying tile. However, the process will involve using an extra sheet of backer board. Never use standard screws when installing cement board.

How do you remove thinset?

To remove thinset, start by pouring boiling water over the thinset to weaken the material. Leave it for an hour, then hold a sharp putty knife at a 45-degree angle and hammer the back with a hand maul to break up the thinset.

Can you tile over old cement board?

Cement board forms a durable, stable base for tile, and it has no organic materials (unlike drywall, greenboard, or plywood) so it is not prone to mold, rot, shrinkage, or decomposition due to moisture. Ceramic tile laid over cement board is one of the most durable floor or wall surfaces you can install.

How do you remove thinset from durock?

Quote from the video:
Quote from Youtube video: And what you want to do is find a point and then just your hammer. And just. Get behind it. And just easily get at it and you can see right there that it comes off in a pretty big sized chunk.

How do you remove Hardie board without breaking it?



Slide the thin edge of a flat pry bar carefully under the lower edge of the first piece of HardiePlank siding to be removed. Use a mallet or hammer to gently drive the tip of the bar up behind the siding if necessary.

How do you remove Thinset from concrete backer board?

Scrape thinset off the floor or wall after removing the backer board with a metal scraper, or use a handheld oscillating power tool with a mortar grinding attachment.

How do you remove tile without damaging cement board?

How to Remove Tile From Hardie Board

  1. Position a cold chisel on the grout between one the tiles. …
  2. Place a point punch in the middle of the tile. …
  3. Position the cold chisel along the edge of the one of the tiles next to the tile you removed. …
  4. Remove the tiles from the board and discard.



How do you remove old cement from tiles?

Use a scraper, metal scrubber or flat head screwdriver to remove as much of the cement as possible. For the remaining cement, apply the phosphoric acid following the manufacturer’s instructions. Once the cement loosens, scrub the area with a scrubber until it is all removed from the surface.

Can you reuse cement board after removing tile?

Undamaged cement backer board does not need to be replaced. If tile has not been attached directly to the backer board, and it has not been dented or punctured, it can be reused without any special preparation.

How do you remove tile from backer board?

Hold a narrow chisel, about the same width as the grout lines or slightly smaller, against the grout. Hammer the chisel until it breaks through the grout. Tilt the chisel to a 60-degree angle once you reach the cement backer board below the tiles. Continue hammering the chisel to remove the grout along the joint.

Do you have to remove old backer board?



Preperation. If the boards appear to be in good shape and firmly adhered to the floor, you can re-use the old backer boards for your new tile installation. However, you still need to prepare the boards for installation, taking them back down to the bare cement board.