Siniat Watershield is a wet area plasterboard made from a core of gypsum sandwiched and lined with recycled blue paper. Watershield is commonly used as a water-resistant wall and ceiling plasterboard lining and as a substrate for tiles in internal wet areas such as bathrooms, showers, toilets and laundries.

Watershield may also be used as the wall lining for indoor swimming pools provided a waterproof membrane is applied over the wall.

Siniat Watershield has been independently certified by Global GreenTag to GreenRate Level A and is available under the Siniat Carbon Neutral Opt-in program.

Not all sizes listed in the table below are available in all locations - please refer to your supplier for all available sizes in your region. Special sizes and other edge types available, minimum order quantity and lead times may apply.

Further information


  • Used as a water-resistant wall lining in wet areas such as bathrooms, showers, toilets and laundries.
  • Good substrate for tiles


  • Protects framing members against water damage
  • Non-hazardous lining solution
  • Smooth finish, easy to paint
  • Easier to install and repair than fibre cement linings
  • Lower risk of cracking and fewer control joints required compared with alternatives
  • Certified for use in Green Star projects
  • Available under opt-in Carbon Neutral Program
  • Good substrate for tiles

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