Bathroom and shower solutions

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Choices for your bathroom, wet-room and shower

Bathrooms and wet rooms are subject to extreme conditions: wet, cold, heat, humidity and moisture. Standard plasterboard will soak up water and start to break down the integrity of the wall and will lead to mould and fungal growth.

Solutions for bathrooms

Show more Show less Repel water


Siniat's Aqua Board is a performance board with high water resistance. It’s up to 30% lighter than other tile backing boards and offers a smooth finish which means you can paint or tile directly on to it.

Can be used in bathrooms, showers,  wet-rooms and even around swimming pool areas. Aqua Board also has high sound and fire resistance properties. 


  • Drylining
  • Metal stud or timber partition


  • Repels water, fully mould and fungus resistant.
  • Additional benefits of high sound and fire resistance.
  • Fast to install – Installed in the same way as standard board.
  • A much lighter easy to install solution compared to cement particle board solutions.
  • Offers a smooth finish enabling direct painting and tiling.

Key Specifications
Available in either 12.5 mm and 15 mm
Suitable for linings, floors and ceilings and external sheathing.

Our product
Show more Show less Control Moisture 


Moisture board has a less than 10% water absorption so is perfect for walls and ceilings in high humidity areas such as kitchens and utility rooms.

By resisting moisture, the board helps prolong the life and durability of walls and partitions and maintenance.

It is suitable for a range of decorative finishings such as painting, tiling, splash blacks and more.

  • Dot & Dab
  • Drylining
  • Metal stud or timber partition


  • Beats humidity making it perfect for humid areas.
  • Easy to cut, fix and finish – simply score and snap.
  • Suitable for stud partitions, wall lining and ceilings.
  • Less than 10% water absorption.
  • Complies with BS1230 Type 3 and 4, BS EN 520 Type H2.

Key Specifications
  • Available in either 12.5 mm or 15 mm.
  • Can be jointed and finished with Siniat compounds.
  • Requires priming with GTEC Universal Sealer prior to decorating and treating with PVA bonding agent before plastering.
Our product

Case study: Bathroom

We recognise the importance of quality and comfort in your home – and this is where our products can make a real difference. Our specialist products are an investment for the future, what’s on the inside of your property is as important as what’s on the outside.

Bathroom case study 1
Bathroom case study 2
Siniat Solutions Residential Bathroom Development
Siniat Solutions Residential Bathroom Ollie Thompson Builder

Ollie Thompson,
Builder and homeowner, Bristol, UK

“I’m a builder and am currently renovating my bathroom at home.

It’s going to have a new walk-in shower and full bathroom suite.

I’ve taken out the old plasterboard and replaced it with Aqua board because it won’t absorb moisture. I can tile directly onto it and the grouting isn’t going to get mouldy."

Supporting Tools, Tips and Information

HOW To - Board a bathroom or wet-room
Aqua Board How To Video image
HOW TO - Cover an uneven wall
How To - Cover an uneven wall video
Aqua Board on-line Brochure
Aqua Board Brochure

Download the brochure

Technical Services
Technical image

The Siniat highly trained Technical Services is available to answer any technical queries you have and advise on installation details to system specifications to improve Fire, Sound and Thermal performance. Call: 01275 377 789 Email:

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