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KalsiWAB fibre cement board is a great wet area and high traffic lining for dry construction applications.

Immune to long-term moisture exposure, KalsiWAB fibre cement boards do not feed or promote mould growth in humid areas.

The board will also not bow or deform during service which makes it a very stable and robust substrate for ceramic and stone tiling, painting or wall finish.

Key Features
  • Durable and impact resistant
  • Excellent strength and toughness
  • Waterproofing and fireproofing
  • Not prone to warping or cracking
Scope of Use

KalsiWAB is a 9mm thick autoclaved cellulose fibre-reinforced cement sheet available in the following sizes: 1200mm (w) x 2400mm, 2700mm, and 3000mm (l).

IBS supplies KalsiWAB fibre cement board (KalsiWAB) for use as

  • Internal dry wall
  • Internal and external ceiling panel
  • Floor and wall substrate lining (over an existing structural floor) and wall framing for wet areas
Limitations on Use

KalsiWAB is an internal wall and ceiling lining in wet and dry areas, and a base for laying ceramic tiles over a timber floor or reconstituted wood-based substrate.

  • In applications where a Material Group Number is required (clause C3.4(a)), the Kalsi fibre-cement board is at least 6mm thick and any waterborne or solvent borne paint coating is not greater than 0.4mm thick
  • In wet areas the Kalsi fibre-cement board is at least 9mm thick and coated with water resistant paint or tiles (KalsiWAB, or KalsiFlex)
  • In areas adjacent to food preparation the Kalsi fibre-cement board is at least 9mm thick and coated with water resistant paint or tiles (KalsiWAB, KalsiGroove or KalsiFlex)

Kalsi fibre-cement boards shall be installed in accordance with the installation instructions provided by IBS in its Installation Guide

Statement of Building Code Compliance

If designed, installed and maintained in accordance with all IBS requirements, the KalsiFloor product will meet the following provisions of the NZBC:

  • Clause B1 Structure — B1.3.1; B1.3.2; B1.3.3(b) when used as tile floor underlay, B1.3.3(j) when used as wall lining); B1.3.4
  • Clause B2 Durability — B2.3.1(b) when used as a substrate for tile; B2.3.1(c)
  • Clause C3 Fire affecting areas beyond the fire source — C3.4(a)
  • Clause E3 Internal moisture — E3.3.3 (contributes to); E3.3.4 (contributes to); E3.3.5 (contributes to); E3.3.6 (contributes to)
  • Clause F2 Hazardous Building materials — F2.3.1
  • Clause G3 Food preparation and prevention of contamination — G3.3.2(a) (Contributes to)
B1 Structure compliant
B2 Durability compliant
C Protection from Fire compliant
Protection from Fire
E3 Internal Moisture compliant
Internal Moisture
F2 Hazardous Building Materials compliant
Hazardous Building Materials
G3 Food Preparation and Prevention of Contamination compliant
Food Preparation and Prevention of Contamination
Technical Data Sheet
CodeMark CM70106

CM70106 2022

Installation Guide

Since 1993, IBS has been working with the top building products producers from around the world to bring New Zealand a panel product range to help Kiwis build better.

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