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

Mariatta Thomas 24/05/23


Good finishing

Verified Buyer

Faisal Ali 06/05/23

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

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

Ross M. 06/09/21

Hardie backer

.Floor was fantastic exactly what I was looking for .Quality great boards easy to work with weatherproof and strong .Shipping didn’t come on the selected day due to courier but was refund delivery for my trouble so all and all good experience with tile mountain would use again

Verified Buyer

Matthew M. 27/03/21


Ordered 20 of these, all arrived on a pallet delivery well wrapped up no damages. Prices easily better than diy stores

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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