HardieBacker™ cement board. Simple. Reliable. Durable. The water resistant tile backerboard. What are you tiling on when you are refurbishing or installing a. 3 | attach HardieBacker cement board to countertop. • Apply a supporting bed of dry-set mortar or modified thinset to plywood with a 1/4” square-notched trowel. If you’re preparing to do a ceramic floor or wall installation, it’s recommended that you install HardieBacker cement board on your subfloor or wall before you.

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HardieBacker Cement Boards Installation Instructions

Another important thing you need hardibadker know is that the HardieBacker boards hardibafker crystalline silica which is inert itself, but using power tools when cutting or drilling can cause particles to be released which could present danger for your health, if you would be overexposed or inhale larger quantities. The boards are available in two sizes, 6mm and 12mmand differ in application and installation process.

The boards are fixed to the subfloor surface with screws and nails installed every mm, 15mm apart from the edges of the board and 50mm from its corners.

Both 6mm and 12mm HardieBacker cement boards can be used on masonry walls whenever you are dealing with a confined space. The boards are fixed 15mm apart from the edges of the board and 50mm from its corners.

Namely, while traditional tiles and internal finishes substrates cannot fight the mould growth or moisture expansionthus causing cracking of the tiles, timber wrapping and only increasing maintenance costs, these boards are gypsum free, meaning that they will not disintegrate when exposed to high levels of moisture.


The 6mm boards are mainly used for floors, while the 12mm boards are meant for wall substrates. The chosen non-flexible tile adhesive should be applied to the subfloor when the 6mm HardieBacker floor board should be slowly embed into the wet adhesive. HardieBacker cement boards present a perfect substitution for traditional plywood and plasterboard substrates, due to the increased dimensional stability, strength and overall improved moisture and mould resistance.

Used fixings stainless steel screws should not be overdriven but flush with the face of the board.

Install the screws at least 50mm into the wall, 50mm from the right and left edges and mm from the top and bottom ones. If you are using timber studs, then 30mm galvanised nails or screws should be used as fixings. The boards should be installed onto a clean and smooth surface, so make sure to remove any debris or dust.

The boards can be installed both vertically and horizontally, so just score and snap the boards and make necessary cuts. Prior to moving on to the HardieBacker board installation instructionsit is important to keep a few important facts in mind:. Please consult the applicable regulation in order of determining whether a vapour control barrier is necessary.

Haddibacker boards can be easily cut with the carbide tipped scoring knife. In order of ensuring adequate protection, you should always carry the work outside or in a well-ventilated space, use adequate tools, wear protective equipment such as a face mask, and make sure to clean the space and your clothes from any intsallation debris once the job is done.

The boards are then evenly covered with adequate gap filling cartridge adhesive and pressed against the designated wall surface. Stud centres should be at maximum mm and all corners blocked installlation adequate timber. The boards should be installed at least 6mm above the floor and the joints filled with adequate moisture resistant sealant. If you need to make circular cuts, just score the hole, mark the weak point in the centre and tap it with a hammer.


The boards should be scored with a straight edge and pulled upwards. A 50mm alkaline-resistant Fibatape should be added over the joints and the tiles installed onto the boards.

Gaps of minimum 3mm between the wall edges and the floor should be filled with adequate moisture resistant sealant. The spacing between the joists should not exceed mm centres. The boards should be installed onto a clean and smooth surface and all remained dry installation removed prior to installation.

Both available board types are applicable to masonry walls, when the access is limited. In order of avoiding excessive flex which onstallation lead to tile cracks, make sure:.

The boards can be easily scored and snapped and necessary cuts implemented.

HardieBacker Cement Boards Installation Instructions

As upper mentioned, 6mm HardieBacker boards are usually used for internal floors, however the 12mm boards are also applicable in case additional height is necessary. Also remove and fix any floor damages such as uneven, warped or loose floorboards. They include a patented Mouldblock Technology which only ahrdibacker their application to even the wettest areas such as kitchens and bathrooms which is not the case with the available alternatives.