Question 1

1. How do you cut Hardiebacker board?

Accepted Answer

The simplest way is to score the surface with a carbide-tipped knife along a straight edge, then snap the board. James Hardie sell a scoring tool specifically for this, if you don’t have anything appropriate. Power tools can also be used, but they’ll kick out a lot of dust, so you’ll need some sort of particle control in place.

Question 2

2. How do you install Hardiebacker board on walls?

Accepted Answer

Boards can be fixed directly to timber, metal studs, or masonry using corrosion-resistant roofing nails, specialized HardieBacker screws or similar cement board screws. You can find detailed instructions here on the James Hardie website.

Question 3

3. Can I use Hardiebacker board as a fireplace facing?

Accepted Answer

Hardiebacker board is non-combustible and has an A1 fire rating, making it suitable as a substrate or lining for a fireplace. It’s not designed to be used as a decorative fireplace finish on its own though, and should be installed as part of a compliant system.

Question 4

4. Can you plaster Hardiebacker board?

Accepted Answer

Hardiebacker boards are not really designed for gypsum plastering or skimming. They’re mainly used as a tile backing surface, though some finishes may be applied with suitable preparation.

Question 5

5. Can you use Hardiebacker board outside?

Accepted Answer

12mm Hardiebacker board can be used externally as a substrate for systems such as render, brick slips, tiles, or external-grade paint finishes. It should not be used as a finished surface though, and should be protected with suitable external materials.

The 6mm board isn’t suitable for external use. External installations are limited to vertical applications and must follow manufacturer guidance, including fixings, clearances, and exposure restrictions.

Question 6

6. Is Hardiebacker cement board waterproof?

Accepted Answer

Hardiebacker boards are water-resistant rather than fully waterproof. In wet areas, a tanking or waterproofing system is normally applied over the surface.

Hardiebacker board

12mm Hardiebacker Board 1200mm X 800mm

6mm Hardiebacker Board 1200mm X 800mm

6mm Hardiebacker 500 Tile Backing Board800mm x 1200mm (90 Per Pallet)

Hardiebacker 500 Tile Backing Board 12mm x 800mm x 1200mm (50 Per Pallet)