What is Tanking?

In the world of construction and home improvement, there are many technical terms and concepts that might sound unfamiliar to the average homeowner. One such term is "bathroom tanking." If you're planning a bathroom renovation or have encountered this term while discussing your project, it's crucial to understand what it means and why it's essential. In this article, we will delve into bathroom tanking, explaining its purpose, methods, benefits and if you need it.

What Is Bathroom Tanking?

Tanking is the term used for the waterproofing procedure carried bathroom prior to tiling. The same or similar tanking process can also be used in wetrooms and steam rooms which protects the building against moisture migration, leaks and mould buildup.

Bathroom tanking is a specialized waterproofing technique which involves creating a waterproof barrier within the bathroom structure to ensure that water from showers does not seep into the building's structural elements, such as walls and floors.

The Importance of Bathroom Tanking

Bathroom tanking is a crucial step in any tiled bathroom renovation or construction project. Here's why it's essential:

Prevents Water Damage

Bathroom tanking safeguards your home against water damage. Without proper waterproofing, water can infiltrate your walls and floors, leading to structural problems and mold growth.

Contrary to popular belief, tiles, adhesives and grouts are permeable and can allow moisture to migrate into the structure over time causing mould growth, rot, and in some cases resulting in structural damage.

Enhances Longevity

By preventing water damage, bathroom tanking extends the lifespan of your bathroom. It ensures that your newly renovated space remains in top condition for years to come.

Conform Building Regulations

Latest codes of practice released in July 2018 by the British Standards Institute (BSI) for BS 5385-1 (wall and floor tiling in normal internal conditions) states that ‘In wet areas … substrates should be protected with a suitable proprietary tanking membrane system’.

Should your new installation or remodel be found to not conform to the building regulations, you may find that should you require to claim from your home insurance for water damage, your insurance may be void.

Read more on the UK regulations on tanking a bathroom here

Methods of Bathroom Tanking

There are several methods of bathroom tanking, each with its own advantages and suitable applications. Here are the most common approaches:

Tilebacker boards

Tilebacker boards are waterproof sheets (commonly constructed from cement-based materials with a foam core) that are attached to walls and floors to form a sturdy base onto which tiles can be laid. Using tanking tape to seal the joins between board, they provide a waterproof and strong surface for tiles to bond to. Tileback board often replace plasterboard making them a popular choice.

Liquid Waterproofing Membrane

This method involves applying a liquid membrane over bathroom surfaces, such as walls and floors. It forms a seamless, waterproof barrier when dried, ensuring comprehensive protection.

There is also Cementitious coatings which are a cost-effective option for tanking. They consist of a cement-based mix that is applied as a slurry. Once cured, it provides excellent waterproofing.

Sheet Membrane

Sheet membranes are waterproofing sheets, often available in rools, that can be adhered to bathroom surfaces. They are durable and easy to install, making them a popular choice.

DIY vs. Professional Bathroom Tanking

When it comes to bathroom tanking, you may wonder whether to tackle it as a DIY project or hire a professional. Let's explore both options:

DIY Bathroom Tanking

If you have experience with waterproofing and construction, you might consider DIY bathroom tanking. However, it's crucial to follow manufacturer guidelines and use the right materials.

Professional Bathroom Tanking

Hiring a professional ensures that the job is done correctly and meets industry standards. Professionals have the expertise and equipment to handle complex waterproofing tasks.

Frequently Asked Questions (FAQs)

1. Is bathroom tanking necessary for all bathrooms? If you are tiling your bathroom then Yes. In the UK, bathroom tanking is necessary for all bathrooms, especially those in wet areas where water exposure is high. If you choose to use bathroom wall boards instead of tiles, then tanking is not required but advisable.
2. Can I apply bathroom tanking over existing tiles? Yes, some tanking solutions can be apply existing tiles, but it's crucial to ensure that the surface is clean, dry, and properly prepared.
3. How long does bathroom tanking last? Properly installed bathroom tanking can last for the lifetime of your bathroom, providing long-term protection for your bathroom and home.
4. What are the signs of inadequate bathroom tanking? Signs of inadequate bathroom tanking include water stains on walls or ceilings, peeling paint or wallpaper, and a musty odor.
5. Is bathroom tanking a DIY-friendly project? While some DIY enthusiasts can handle bathroom tanking, it's generally recommended to hire a professional to ensure effective waterproofing.

Conclusion

In conclusion, bathroom tanking is a required and critical component of any tiled bathroom renovation or construction project. It protects your home from water damage and extends the life of your bathroom. Whether you choose a liquid membrane, sheet membrane, or cementitious coating, ensuring proper waterproofing is essential for a successful bathroom project.

Now that you have a better understanding of bathroom tanking, you can make informed decisions about your bathroom renovation and the tanking kit you may require. For more information and expert assistance, feel free to contact us.