What Do You Need for a Wetroom Installation?

What Do You Need for a Wetroom Installation? (UK Guide 2026)

Wetrooms are becoming increasingly popular in UK homes thanks to their modern look, practicality, and accessibility.

But if you're planning one, the key question is:

👉 What do you actually need to install a wetroom properly?

This guide breaks down everything required — from floor preparation to waterproofing and heating.

1. Wetroom Former or Shower Tray

The foundation of any wetroom is the shower base. This is typically a pre-formed tray or former that creates the correct fall for water drainage.

• Ensures water flows toward the drain
• Creates a level finish with the floor
• Designed for tiled finishes

👉 This is essential — without it, water will not drain correctly.

2. Waterproofing (Tanking System)

A waterproofing system is critical in any wetroom installation.

This usually includes:

• Waterproof membrane or liquid tanking
• Sealing tape for joints and corners
• Internal and external corner pieces

These components work together to create a fully sealed, watertight space.

👉 Skipping proper tanking can lead to leaks and long-term damage.

3. Tile Backer / Insulation Boards

Tile backer boards provide a stable, waterproof base for tiling and underfloor heating.

• Water-resistant and durable
• Improve insulation and heat efficiency
• Suitable for walls and floors

👉 View insulation and tile backer boards

👉 These are strongly recommended in all wetroom installations.

4. Underfloor Heating (Optional but Recommended)

Underfloor heating is not essential — but it is one of the best upgrades you can add to a wetroom.

• Keeps tiles warm underfoot
• Helps dry the floor faster
• Improves overall comfort

👉 Electric underfloor heating is ideal for wetrooms.

View electric underfloor heating systems

5. Drainage System

Efficient drainage is essential for a wetroom to function properly.

• Linear drains or central drains
• Must be installed at the correct level
• Connected properly to waste pipes

👉 Poor drainage leads to standing water and long-term issues.

6. Tiles and Adhesives

Tiles provide the finished surface of your wetroom.

• Non-slip tiles are recommended for safety
• Flexible tile adhesive should be used
• Grout must be waterproof or suitable for wet areas

👉 Always use products suitable for wet environments.

Example Wetroom Setup

This combination ensures a fully waterproof, efficient, and long-lasting installation.

Common Wetroom Installation Mistakes

• Skipping waterproofing
• Incorrect floor fall or drainage
• Using the wrong boards or materials
• Not planning the layout properly

👉 These mistakes can lead to leaks and costly repairs.

Not Sure What You Need?

Ready to Start Your Wetroom Project?

Explore our range of underfloor heating systems, insulation boards, and installation products to build the perfect wetroom.