QA

Quick Answer: How To Cut Concrete Backerboard

What is the easiest way to cut cement board?

The simplest way to cut cement backer board is to score the surface and snap the sheet along the scored line, similar to the way you’d cut drywall. In fact, you can use a drywall utility knife to score backer board, but a better option is a carbide-tipped scoring tool.

Can cement backer board be cut?

Cement backer board can be cut with a carbide-tipped scoring tool, just score and snap the sheet, similar to cutting drywall. For straight cuts, use a circular saw fitted with a carbide-tipped woodcutting blade, but here’s a little secret: use a blade with the fewest number of teeth you can find.

What kind of blade Do I need to cut cement board?

Use a carbide-tipped wood-cutting blade to minimize dust. Cement is a very hard material, so you’ll need to use a blade that can handle the material. Carbide-tipped wood-cutting blades have fewer teeth than other circular saw blades and the carbide can withstand the strain of the cement.

Can you cut cement board with a utility knife?

A carbide-tipped scoring knife is recommended, but you can also use a utility knife or shears. Never use a high-speed grinder to cut cement board indoors, since this can create a dust hazard.

Can you cut cement board with a Sawzall?

A: You can cut cement backer board with a circular saw or grinder equipped with an abrasive or diamond blade. A reciprocating saw with an abrasive blade will also do the trick, and so will a backerboard scoring knife, which works like a standard razor knife but with a carbide cutting edge.

What side of cement board faces out?

Cement board has a smooth side and a rough side. Face the rough side out if you will be using thin-set mortar adhesive to install the tile but the smooth side out if you will be using latex mastic.

What is the best way to cut durock?

To cut DUROCK Brand Cement Board, mark desired size on the board with a rule and pencil. Score both sides and edges with a utility knife through the glass-fiber mesh, and snap the board to size. Smooth cut edges with wood rasp.

Can you cut Hardie board with a regular saw blade?

You can use a jigsaw, table saw or circular saw, or another tool, as long as it’s equipped with the right kind of blade. Once prepared, cut the Hardie board as you would any other material. Mark your line; align the board against the guard as needed and slowly but firmly make the cut.

Can I use drywall screws on cement board?

You don’t want to use regular drywall screws for cement boards. They can corrode, they can break down the edges of the boards, and they won’t drive in flush properly. Use ITW’s ROCK-ON and BACKER-ON screws instead.

Do you have to pre drill cement board?

Fiberboard cement siding can be hand-nailed, but because it’s so much harder and more brittle than wood, you have to predrill holes near any edge. You can save yourself a bunch of time by using a pneumatic coil siding nail gun.

Can you cut durock with a circular saw?

Use power tools on large projects or thick Durock to muscle through the process with ease. A circular saw with a carbide-tipped woodcutting blade is the best tool for the job. While a jigsaw or an angle grinder fitted with a cutting wheel can also cut Durock, these options result in more mess and less accuracy.

How do you attach cement board to plywood?

Position each piece of backer board in the thin-set, press in place, and attach using special backer board screws on the spacing recommended by the backer board manufacturer. Cover the joints in the backer board with fiberglass tape embedded in thin-set adhesive and allow to set before tiling.

How do you drill into cement sheets?

How to Drill Holes Through Cement Fiber Siding Mark the position where the hole should be drilled. Put on safety goggles whenever drilling, sawing or nailing cement fiber siding. Drill a small hole using an electric drill and drill bit. Drill larger holes with a circular attachment on the drill or use a RotoZip tool.

Can you tile directly on 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.

Do you have to tape cement board before tiling?

If you are going to tile over the cement board, you should tape the seams. This should not be that difficult. Pack in thinset, lay on the tape, and flat-knife to get it set in. In the corners, use a corner knife.

Do you need thinset under cement board?

Using thinset under cement board is a commonly skipped step amongst many contractors. However, many manufacturers including, both Durock and Hardiebacker not only recommend that you use thinset under their backerboard, but they specify it and will void the warranty on their product if it’s not used.

Can you cut durock with a knife?

To cut DUROCK Next Gen Cement Board, measure the desired size on the board and mark on the front and back with a pencil. Score with a utility knife, cut through the glass-fiber mesh then snap the board to size. Smooth edges with wood rasp. Wear a dust mask and eye protection.