HardiePlank Installation

Preparation considerations

  • Storage & handling are vital
  • All boards and environment must be dry
  • Battens, EPDM and fixings organised?
  • Consider cutting requirements
  • Touch-up paint vital for success

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01803 813 803

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Product Details

James Hardie have more detailed instructions and drawings on preparation and installation in their HardiePlank Cladding Installation Manual, the following paragraphs are meant as an introduction to what is involved.

HardiePlank® Cladding is a nominally 8 mm thick plank for external cladding on residential and commercial buildings.  These cement-fibre boards, and associated trims, are durable but they do require proper handling, storage and installation to maximize the benefits of this quality product.

HardiePlank® cladding and HardieTrim® cladding profiles are made of Portland cement, milled sand, cellulose fibres, water and selected additives. They must be kept dry before installation, wet products must not be installed as it may result in shrinkage at butt joints. Neither James Hardie or Southern Timber can be held responsible for damage caused by improper storage and handling of the product. Carry planks on edge.

James Hardie does not specify the fastening requirements for the framing to the building and will not take the liability of such structural elements. The attachment of the framing should be incorporated into the overall building design and should be approved by the responsible parties. Waterproof membranes, timber battening and the installation of the EPDM gasket must also be considered as part of the design.

Preparation should include making certain that once installation begins that any JamesHardie products will not be in contact with standing water.  Safety precautions must be considered, cutting and drilling will generate dust, some provisions must be made for where cutting is due to take place.

For cutting cement fibre boards  a diamond tipped HardieBlade® saw blade and/or a HardieGuillotine™ manual cutting tool should be used for a clean-cut finish.  All cut ends must be sealed with Touch-up paint immediately prior to installation with a small artist brush.

ColorPlus® touch up paint may be used to deal with small scratches and marks less than 6mm . The HardiePlank Cladding can be nailed by hand or with a gun but the nails must be flush installed. Boards can be installed horizontally or vertically, but correct spacing, battening and use of EPDM is vital to the successful installation.