Waterproofing bathrooms

Waterproof tiling in a bathroom is important to prevent water damage and leakage to the underlying structure and to ensure a durable finish. Especially in wet areas, such as showers or bathrooms, it is very important to apply a waterproof layer before tiling. Discover how to make your bathroom, shower or walk-in shower completely waterproof using sealing tape and the right products from the Bostik Seal & Block range.

How can you waterproof a bathroom?

To waterproof a bathroom, you need a combination of:

a waterproof membrane such as the BLOCK X911 TERRA TURBO LIGHT 2K
sealing tape for the joints and corners

This combination forms a waterproof base for the tiling. The joints between walls and floors are particularly susceptible to leaks, so it is crucial to apply the sealing tape correctly.

What do you use to waterproof a bathroom?

For a waterproof bathroom, use products from the Bostik Seal & Block range:

BLOCK X911 TERRA TURBO LIGHT 2K: a flexible, crack-bridging membrane.
Sealing tape: specially designed for corners and joints.

These products are easy to apply, quick-drying and provide a perfect waterproof finish. Even with intensive use, the system remains reliable.

Where do you place sealing tape in a bathroom?

Apply sealing tape to:

Joints between walls and floors,
Corners of the walk-in shower,
Transitions around the shower tray

Thanks to the flexible nature of the tape and the membrane, movement in the substrate is absorbed without affecting the waterproofing.

Applying sealing tape? Here's how!

Applying sealing tape is easy with this step-by-step plan:

Ensure that the substrate is clean, dry and dust-free.
Apply a layer of BLOCK X911 TERRA TURBO LIGHT 2K using a trowel.
Press the sealing tape directly into the wet paste, without creases or air bubbles.
Apply a second layer of paste over the sealing tape.

For the rest of the bathroom, apply BLOCK X911 TERRA TURBO LIGHT 2K in two layers for a completely sealed finish.

Can I waterproof my bathroom myself?

Yes, with the right materials, it is perfectly possible to waterproof a bathroom yourself. Thanks to Bostik's user-friendly Seal & Block products, the system is easy to apply. To ensure a lasting waterproof result, make sure you follow each step carefully.

Is a drip edge strip mandatory in the bathroom?

Although not legally required, most manufacturer guidelines strongly recommend using waterproof tape in the bathroom. The risk of leakage is particularly high in corners and transitions. Waterproof tape provides extra security and, together with the membrane, forms an ideal combination for a guaranteed waterproof finish.

How can I waterproof my existing bathroom?

When renovating or replacing tiles on the shower floor or wall, it is advisable to completely re-treat the substrate:

Remove old sealant and grout residue.
Clean the surface thoroughly.
Apply sealing tape where necessary.
Finish with BLOCK X911 TERRA TURBO LIGHT 2K for full protection.
Then install the new tile finish.

Building a walk-in shower? Don't forget the edges

When installing a walk-in shower, a waterproof floor is essential. Use sealing tape in all corners of the shower floor, the wall joints and at transition to the rest of the bathroom. Combine this with a double layer of BLOCK X911 TERRA TURBO LIGHT 2K for a guaranteed waterproof shower floor.

Waterproofing a shower? Here's how it works

A shower is the place where leaks often occur. Waterproofing the shower prevents moisture problems in the floor and walls. Keep these points in mind:

Apply a sealing tape to all joints in the bathroom.
Finish with BLOCK X911 TERRA TURBO LIGHT 2K.
Use a flexible and waterproof grout, such as ARDACOLOR FLEX, to finish the tile joints.

This will prevent water from seeping under the tiles in the bathroom.

Waterproof bathroom without tiles?

Want a sleek concrete look or other finish without tiles? Then a waterproof membrane is essential. Apply it over the entire floor and walls and finish with a suitable topcoat.

Conclusion

A well waterproofed bathroom starts with careful preparation and the right materials. With Bostik's Seal & Block products, such as sealing tape and BLOCK X911 TERRA TURBO LIGHT 2K, you can create durable protection against moisture, leaks and mould.

Whether you are building a new walk-in shower or renovating an existing bathroom, the Seal & Block solution makes it possible. Make sure you follow the correct order and enjoy a waterproof bathroom for years to come.