A wet room is a completely waterproofed bathroom where the shower area is seamlessly integrated into the rest of the floor and sits at the same level. Water drains away efficiently through a drain in the shower area. The walls and floor are sealed with a waterproof membrane, eliminating the risk of water escaping and causing damage. Wet rooms are not only practical but also provide a sleek, modern aesthetic, maximizing space and enhancing accessibility.

Crucial Role of High-Quality Waterproofing in Bathrooms

Illustration of bathroom shower wet room wall floor build up with waterproofing

Ensuring that wet rooms are properly waterproofed is paramount to prevent
water ingress and subsequent damage, which can lead to structural deterioration and microbiological growth within the building fabric. Selecting and installing durable waterproofing and tile setting materials is crucial to maintaining the integrity and longevity of wet room areas, ensuring they remain safe and hygienic.

Using high-quality waterproofing mortar is of utmost importance. It not only prevents water damage but also significantly reduces the risk of mold and mildew growth, which can pose health risks and require costly repairs. A well-executed waterproofing system ensures the durability and functionality of wet rooms, safeguarding both the structure and the well-being of its occupants.

Tiling & Waterproofing Solutions

Sika provides a comprehensive, integrated system designed to meet the stringent requirements of wet room environments.

  • The process begins with the application of a one-component cementitious waterproofing mortar, renowned for its high flexibility and fiber reinforcement, to create a robust waterproof barrier.
  • Next, a flexible cementitious adhesive enriched with a high polymer content, is used for tile installation. This step is critical for ensuring secure, durable tile setting.
  • The tiles are then grouted with a two-component epoxy grout, chosen for its superior chemical and abrasion resistance, available in various color shades to match the aesthetic needs of the project
  • Finally, the system is completed with a high-performance, antifungal sealant for movement and connection joints, providing a long-lasting, watertight finish.
The craftsmen are trained by Sika in advance to apply its specialty and adhesive mortar safely and efficiently. Together with the high quality of the products, this approach helps to ensure the durability of the apartments.

How to Waterproof and Tile a Bathroom With Sika Solutions

6 Easy Steps to Waterproofing & Tiling a Bathroom

1. Check substrate condition

Substrate must be even, stable, dry and free of cracks and substances that may affect the adhesion.  

2. Surface preparation

Depending on substrate, you may use a primer or pre-wet substrate before repairing.
Use Sika patching and leveling products to level walls, build the slope for a walk-in shower and level the floors.

3. Waterproofing

Perhaps the most critical step, waterproof the joints, transitions and penetrations with Sika sealing tape and waterproofing mortars.

4. Tile setting

Draw a horizontal line for the first row of tiles.
Use Sika tile adhesives for all types of tiles. 

5. Tile grouting

Use Sika cementitious tile grout for joints between 1-8mm, for all types of tiles.

6. Joint sealing

Use Sika joint sealant for long-term fungus resistance and low odor.

Sika Solutions for Bathrooms

Sikafloor®-200 Level
Self levelling compound

Sikalastic®-1 K
One component cementitious mortar
Applied in two layers

Sika® SealTape
Elastic sealing tape

SikaCeram®-250 StarFix
Deformable tile adhesive

SikaCeram® StarGrout
Epoxy based grout for joints from 1 to 15 mm width

Sikasil® C
Neutral-curing silicone sealant

Many of our products for wet rooms can be purchased from our distributors. Find your nearest below