Tile Mountain
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6mm HardieBacker Board 1200x800

Size 800x1200mm
SKU: 445675
In Stock
£16.95 m2
How many do I need?
£16.27 inc VAT


Get the best protection against moisture damage when you use HardieBacker® tiling backer board; the floor tiling backerboard of choice wherever superior performance is required.

Key Features

  • 90% Portland cement and sand construction
  • No loose aggregate or filler
  • Highest flexural strength and up to three times the compressive strength of competitive cement board
  • Easy to cut to any size: just score and snap
  • Clean cuts allow edges to align tightly
  • Less dust and debris when cut
  • Unique formulation with MouldBlock Technology provides outstanding mould and moisture resistance
  • Excellent heavy tile adhesion

Have confidence that your job will last – resisting rot, swelling and warping when exposed to moisture – when you choose HardieBacker® 6 mm. It’s the water-resistant cement backerboard that works perfectly with all types of tile or natural stone flooring. HardieBacker® light, easy-to-cut, no-mesh board features our exclusive EZ Grid® recessed pattern, making installation even easier. Install it over an existing timber floor or in conjunction with underfloor heating to optimise heat efficiency. The slim-line 6 mm elevation prevents floor build up and minimizes the transition between floors. HardieBacker® 6 mm with MouldBlock Technology is the durable water and mould resistant alternative to plywood for tiling on floors. Just like HardieBacker® 12 mm, it has excellent adhesive properties, ensuring that whatever ceramic or stone tile you use, it will hold strong with applied weights of up to 100 kg/m².

Product Details
Product Guides
  • SKU 445675
  • Tiles Per Square Metre 1.04
  • Weight 8.50 KG
  • Height 1200
  • Width 800

Product Reviews

Sean Mcgrath 09/10/23

The lady in the shop was so helpful 10 out of 10

Verified Buyer

Mariatta Thomas 24/05/23


Good finishing

Verified Buyer

Casey 21/04/23

Easy to use and solid

Watched a few YouTube videos on how to install these properly as we are diy’ers but they were quite simple to put down over our chipboard floor

Verified Buyer

Anonymous 19/03/23

Great service and products

Easy to install and handy to have the lines on for setting the screws out

Verified Buyer

Anonymous 15/11/22

Hard backer

Love a good hard back board

Verified Buyer

Damian 16/09/22


Verified Buyer

Jim 25/06/22

Tile Mountain were efficient and extremely helpful, very easy to deal with and I would definitely use them again.

Verified Buyer

Michael Noble 10/04/22

Excellent value!.

Verified Buyer

Read More Reviews:

Larry 07/09/22

Can l use a sealant to it to attach a shower tray?


Our advice: We woudln't advise using a sealant as the only form of fixture.

JB 23/04/21

Hi, I have just purchased some 6mm backerboard and have read conflicting advice on how to install it. Do I need to use any form of adhesive (or mesh tape) to install on T&G 18mm floorboards? At present I am only planning to use the 25mm backerboard screws I also purchased.


Our advice: You can just use the screws; however, if you wished, you could use a small amount of adhesive as well.

Rob 11/03/20

Is it a good insulator, can I use it instead of thermal board for underfloor heating?


Our advice: HardieBacker boards are suitable for underfloor heating. They should always be placed between the structural timber floor and the heating element.

Tim 18/12/19

Does the hardie backer need priming before adding tile adhesive?


Our advice: No - these boards do not need priming.

Tim 16/12/19

Can these be used behind tiling a wall in a shower enclosure?


Our advice: Yes - these tiles will be suitable as they are water resistant.

Wazza 26/11/19

hi looking to install these on bathroom walls, all are brick (plastered) which adhesive is best to use and which size screws/washers are best to use? Thank You


Our advice: We wouldn't recommend using adhesive, we would only recommend using screws. We recommend a minimum of 2” x 4” wood studs or 20-gauge metal studs, which must be straight, properly aligned and spaced a maximum of 16” on center

Jon 08/11/19

What Adheisive would you reccomend for installing Hardie 6mm boards over tongue and groove pre-routed chipboard (with spreader plates and UFH pipes installed? (shorturl.at/nzMZ0 for ref)


Our advice: We would recommend the Granirapid Grey 2 Part Kit

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