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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The boards should be installed onto a clean and smooth surface, so make sure to remove hardjbacker debris or dust. HardieBacker boards can be easily cut with the carbide tipped scoring knife.

The boards are then evenly covered with adequate gap filling cartridge adhesive and pressed against the designated wall surface.

HardieBacker Cement Boards Installation Instructions

If you need to make circular cuts, just score the hole, mark the weak point in the centre and tap it with a hammer. If you are using timber studs, then 30mm galvanised nails or screws should be used as fixings. Also remove and fix any floor damages such as uneven, warped or loose floorboards.

A 50mm alkaline-resistant Fibatape should be added over the joints and the tiles installed installtion the boards. 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. The 6mm boards are mainly used for floors, while the 12mm boards are meant for wall substrates.

Both 6mm and 12mm HardieBacker cement boards can be used on masonry walls whenever you are dealing with a confined space. 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.


The boards should be installed at least 6mm above the floor and the joints filled with adequate moisture resistant sealant. The boards should be installed onto a clean and smooth surface and all remained dry lining removed prior to installation. Used fixings stainless steel screws should not be overdriven but flush with the face of the board.

The boards are available in two sizes, 6mm and 12mmand differ in application and installation process.

HardieBacker Cement Boards Installation Instructions

The boards are fixed 15mm apart from the edges of the board and 50mm from its corners. 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 settled debris once the job is done.

Instaloation boards should be scored inatallation a straight edge and pulled upwards. Both available board types are applicable to masonry walls, when the access is limited. They include a patented Mouldblock Technology which only expands their application to even the wettest areas such as kitchens and bathrooms which is not the case with the available alternatives. In order of avoiding hardlbacker flex which can lead to tile cracks, make sure:.

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

The spacing between the joists should not exceed mm centres. Please consult the applicable regulation in order of determining whether a vapour control barrier is necessary. Gaps of minimum 3mm between the wall edges and the floor should be filled with adequate moisture resistant sealant. The boards are fixed to the subfloor surface with screws and nails installed every mm, 15mm apart from the edges of the board hardibacksr 50mm from its corners.


Stud centres should be at maximum mm and all corners blocked with adequate timber. HardieBacker cement boards present a perfect substitution for traditional plywood and plasterboard substrates, due to the increased dimensional stability, strength and overall improved hardibackrr and mould resistance. The boards can be installed both vertically and horizontally, so just score and snap the boards and make necessary cuts.

Install the screws at least 50mm into the wall, 50mm from the right and left edges and mm from the top and bottom ones. Prior to moving on to the HardieBacker board hardibackker instructionsit is important to keep a few important facts in mind:.

Another important thing you need to hardibacked is that the HardieBacker boards contain 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.

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.