QA

Question: How To Cut Cement Backer 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.

What tool do you use to cut cement board?

First, you’ll want to choose a scoring tool. 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.

Do I need a special blade 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 hand saw?

While power saws make it a lot easier, it is possible to cut ​cement boards by hand.

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 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 use a circular saw to cut cement board?

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.

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.

Can you cut Hardie board with a wood blade?

There are a few different power tools that you can use to cut cement backer board. For straight cuts, use a circular saw fitted with a carbide-tipped wood-cutting blade, pushing the saw into the material with slow, even pressure. Here’s a little secret: Use a blade with the fewest number of teeth you can find.

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.

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.

What side of backer board goes up?

Screw the board in place 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.

How far apart are screws in durock?

Fasten panels to subfloor while the adhesive is wet with 32 mm (1-1/4″) CGC Durock Wood Screws or 38 mm (1-1/2″) hot-dipped galvanized roofing nails spaced 203 mm (8″) o.c. in both directions.

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.

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.

What kind of blade do you use to cut durock?

A circular saw with a carbide-tipped woodcutting blade is the best tool for the job. Opt for a blade with as few teeth as possible. Unlike cutting wood, the less teeth, the less dust when cutting Durock.

Is concrete board waterproof?

Cement board is not waterproof. In areas continually exposed to water spray (i.e., showers) a waterproofing material is usually recommended behind the boards (i.e., plastic barrier) or as a trowel-applied product to the face of the boards behind the finish system (i.e., liquid membrane).

Can I just screw down backer board?

Screw and Joints Do not use drywall screws as they are not recommended to be used to hold the backer board in place. All of your backer board pieces should be cut before they are placed on​ the floor. It is important to highlight that screws shall not be installed all the way down to the floor joists.