Often asked: How To Cut Cement Board Siding?

Often asked: How To Cut Cement Board Siding?

What do you use to cut cement siding?

For cutting fiber- cement siding, it’s best to use a 4- to 6-tooth polycrystalline diamond-tipped (PCD) blade made specifically for fiber- cement. Regular carbide blades will cut fiber cement, but they dull relatively quickly, and if you attempt a gang cut, the blades overheat and can warp.

What is the best tool 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.

What kind of saw blade do you need to cut Hardie board?

x 4-Teeth Polycrystalline Diamond (PCD) Tipped James Hardie /Fiber Cement Saw Blade.

Can you cut cement board with a jigsaw?

A jigsaw can cut straight cuts, rounded cuts, and is the best choice if you need to cut a circular piece or an irregular shape out of the cement board. Fit the jigsaw with a metal- cutting blade or a carbide-grit blade.

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Can you cut Hardie 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. Here’s how to perform a straight cut on your HardieBacker Cement Board: 1.

Can you cut Hardie board with a circular saw?

Straight cuts in cement backer board can be made using a circular saw. Cement backer board can be cut with a carbide-tipped scoring tool, just score and snap the sheet, similar to cutting drywall.

Do you caulk Hardie board siding?

Wherever Hardie siding meets a trim board, the company recommends you leave a 1/8” gap between the siding and the trim and apply a 3/8” bead of approved caulking to protect and seal the edge of the siding. This means that Hardie contractors are used to overapplying their caulking and letting it shrink over time.

Do you nail or screw cement board?

3. Using the screw pattern as a guide, fasten your HardieBacker Cement Board with nails or screws every 8” on center over the entire surface. 4. Keep screws between ⅜” and ¾” from board edges and 2” from board corners.

Can you use drywall screws for 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.

What kind of screws do you use for Hardie board?

What type of fastener do you recommend for floor and wall applications of HardieBacker® cement board? In compliance with the tile industry, James Hardie recommends 1-1/4” long galvanized or stainless steel roofing nails (0.121” shank x 3/8” HD) or 1-1/4” long corrosion resistant ribbed waferhead screws (No.

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Is Hardie board dust dangerous?

Breathing dust that contains respirable crystalline silica can lead to silicosis, a deadly lung disease. Respirable dust is that fraction of the aerosol that is small enough to reach the deeper, gas-exchange regions of the lungs.

Can I use a diamond blade to cut Hardie board?

For a larger project, use a fiber cement saw blade with polycrystalline diamond tips; if you’re installing Hardie siding on a shed or other small building you can use a fiber cement saw blade with carbide tips. For installations with more or longer cuts, the carbide blade will burn out much more quickly.


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