For the tightest, water-resistant fit

Make sure your sustrate  fits perfectly and stays fixed – with clean-cut edges that align tightly  when you use our purpose-made tools and accessories. The HardieBacker® Score-and-Snap Knife not only guarantees you cut HardieBacker backerboard precisely,  but in record time as well. Extra strength screws ensure our impervious and strongest-on-the-market cement board stays fixed, with the power to hold up to 100 kg/m².

Better cuts with HardieBacker cement board

Simple score and snap

Make 2-3 passes with a HardieBacker Score and Snap Knife or any utility knife. Place one hand and knee firmly along the score line and use the opposite hand to pull the board up toward yourself.

A strong foundation

Tighter seam lines make for a stronger underlay.

Less mess

Less mess and cleaning up than other cement boards.

Non-abrasive

No abrasive debris to scratch floors.

Less dust

No other cement board cuts cleaner.

Get the looks

Our cladding comes in colours inspired by nature. Whatever the environment, James Hardie houses always look at home. Warm or cold, fresh or neutral, light or dark? Pick your favourite hues and start living colourfully.


Discover ideas & inspiration

Product faq

In which sizes is the James Hardie saw blade available?

James Hardie saw blade is available in 160, 190, 254 and 305 mm.

The 160 blades have 20 mm bore with a reducer taking it to 16 mm.
The 190 blades have 30 mm bore with a reducer taking it to 20 mm.
On the 254 and 305 mm blades they have a 30 mm bore and no reducer.

Where can I get a HardieBacker® score and snap knife?

Your local HardieBacker® cement backerboard stockist can provide you with a HardieBacker® score and snap knife. Please check the find your supplier tool on our website to find the supplier nearest to you.

How do I cut HardieBacker® cement backerboard?

HardieBacker® cement backerboard should be cut using HardieBacker® score and snap knife, available from your HardieBacker® cement backerboard stockist.