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Meet Knauf PERMAROCK Interior Systems

Redefining Reliability in Wet and Humid Environments Worldwide

PERMAROCK ® Cement Board Indoor delivers significant reliability in the most challenging wet and humid environments where traditional materials fail. It transforms installation efficiency while reducing physical strain on contractors, making overhead applications significantly faster and easier.

 

Representing modern drylining technology, this innovative board is manufactured from aggregated Portland cement with coated glass fiber mesh embedded in both surfaces. The edges feature Easy Edge™ technology, ensuring clean installations with minimal effort.

From the high humidity of steam saunas to the intensive cleaning regimes of healthcare facilities, and from the constant moisture of swimming pools to the demanding conditions of industrial kitchens, this versatile solution performs flawlessly across diverse wet and humid space applications.

 

Trusted by professionals in over 90 countries worldwide, PERMAROCK ® Indoor has become the global standard where moisture resistance isn't just preferred—it's essential. One solution that addresses multiple construction challenges without compromising performance or design flexibility.

Learn More about PERMAROCK

One board. Many systems. Reliable performance.

Performance Features

Water-Resistant

Maintains stability under constant moisture, splash, and high humidity exposure.

Mould and Mildew Resistant

Inorganic material prevents microbial growth, ideal for hygiene-sensitive environments.

Non-Combustible

Ensures fire protection, certified to AS 1530.1-1994 safety standards.

Robust and Reliable

High impact resistance and strong sound insulation for durable performance.

Energy Efficient

Made of inorganic materials for safe, hygienic interiors.
Water-ResistantMould and Mildew ResistantNon-CombustibleRobust and ReliableEnergy Efficient
Water-Resistant
Water-Resistant
Mould and Mildew Resistant
Mould and Mildew Resistant
Non-Combustible
Non-Combustible
Robust and Reliable
Robust and Reliable
Energy Efficient
Energy Efficient

Processing and Installation Features

  • Significantly Lightweight (Only 11 kg/m²)
  • Easier handling, faster installation, even for overhead applications.
  • Simple Score-and-Snap Cutting
  • Fast, clean cutting — no complex tools or techniques required.
  • No Pre-Drilling Needed
  • Direct screw installation saves time and simplifies workflows.
  • Flexible Design Freedom
  • 1-(4)metre bending radius for seamless curved walls and ceilings.

Finishing Features

  • Ready-Keyed Surface for Tiling:
  • No extra layers needed; supports tiles up to 50 kg/m².
  • Premium Surface Quality:
  • Achieve seamless and high-end interior aesthetic finishes.
  • Versatile Finish Compatibility:
  • Suitable for tiles, stone, renders, and specialized surface coatings.
Ready-Keyed Surface for Tiling:Premium Surface Quality:Versatile Finish Compatibility:

Global Inspirations

PERMAROCK® in Action

Easy Installation That Moves Projects Faster

PERMAROCK® Cement Board Indoor is engineered for simplicity and speed across every stage of installation.

PERMAROCK® Cement Board Indoor is engineered for simplicity and speed across every stage of installation. Weighing only 11 kg/m², the board is exceptionally lightweight, making handling and overhead installation easier. Cutting is fast and clean using a simple score-and-snap technique, with no need for special tools. Boards are installed directly onto substructures without pre-drilling, except where metal thickness exceeds 2 mm.

 

Fastening is straightforward: screws are placed from the center outward, with a spacing of 250 mm maximum and at least 15 mm from edges. With a flexible bending radius of 1 metre, PERMAROCK® easily adapts to curved walls and ceilings without compromising board strength.

 

After installation, joints are prepared using PERMAROCK® Joint Adhesive or Joint Filler & Skim Coating, embedding reinforcement tape where necessary. Before tiling or finishing, PERMAROCK® Board Primer is applied to ensure optimal adhesion. Whether single or double-layer systems are needed, the board supports a wide range of project requirements efficiently and reliably.

 

Note: Please consult the local partner organization of Knauf for more information on country-specific building requirements and legislation. Technical advice on this website is based on standard criteria.

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