Creating a well-waterproofed shower area is essential for maintaining the integrity and longevity of your bathroom. Water damage can lead to significant structural issues, mold growth, and costly repairs.
Whether you’re a homeowner or a renter, I’m sure you’ll agree that you really don’t want water damage at your property. Mold growth has been linked with loads of health problems, and structural issues are a huge danger for both your family and your neighbours.
If you’re a bit a of DIY-lover and like to have a crack at things yourself, you’ll need to read this guide to give you a thorough step-by-step talk through of how to tank your shower.
What Does It Mean to Tank a Shower?
Tanking a shower refers to the process of making the shower area completely waterproof. This involves applying a waterproof barrier to the walls and floor of the shower space to prevent water from penetrating through to the underlying structure.
The term “tanking” comes from the idea of creating a watertight “tank” that ensures no moisture can escape, thereby protecting the rest of the bathroom and the house from potential water damage. In my opinion, tanking is what the experts call it, so if you want to sound like you know what you’re doing, telling people you’re “tanking the shower” will definitely have that effect.
Why Tanking a Shower is Important
- Prevent Water Damage: Water can seep into walls and floors, causing structural damage over time.
- Avoid Mold and Mildew: Moist environments are breeding grounds for mold and mildew, which can lead to health issues.
- Increase Durability: Proper waterproofing extends the life of your shower area and the bathroom as a whole.
- Maintain Aesthetics: Preventing water damage helps keep the bathroom looking clean and new.
Is Tanking a Shower a Legal Requirement?
The legal requirements for tanking a shower can vary depending on your location and local building codes. In many areas, building codes mandate that wet areas, such as showers, must be waterproofed to prevent water damage. It’s essential to check your local regulations to ensure compliance.
In the UK, for example, the Building Regulations (Part C) stipulate that adequate measures must be taken to prevent moisture from penetrating the structure of the building. Similar regulations exist in other countries, often with specific guidelines on the materials and methods to be used.
Best Methods for Waterproofing a Shower
There are several methods to tank a shower, each with its own advantages. Here are the most common and effective methods:
- Liquid Waterproof Membrane: This involves applying a liquid membrane with a brush or roller to create a seamless, flexible waterproof barrier. It’s suitable for complex shapes and provides excellent coverage.
- Sheet Membranes: These are pre-formed sheets of waterproof material that are applied to the shower area. They are durable and provide a robust barrier against water ingress.
- Cementitious Waterproofing: This method uses a mixture of cement-based products that are applied to the walls and floor of the shower. It’s highly effective but requires more skill and preparation.
- Waterproofing Paint: This is a simpler method where a waterproof paint is applied to the surface. It’s not as durable as other methods but can be suitable for small areas or as an additional layer of protection.
For more methods on waterproofing a shower check wetroomsdesign.co.uk/waterproofing-a-shower-diy-insulation-guide.
Step-by-Step Guide to Tanking a Shower
Materials and Tools Needed
- Liquid waterproof membrane or sheet membrane
- Waterproof tape
- Primer (if required by the product)
- Brush or roller
- Utility knife
- Trowel
- Measuring tape
- Bucket and mixer (for cementitious waterproofing)
- Sealant
Step 1: Prepare the Surface
Before you start the tanking process, ensure the shower area is clean and dry. Remove any existing fixtures, fittings, and debris. Repair any cracks or holes in the walls and floor, and make sure the surface is smooth and even.
Step 2: Apply Primer
If the waterproofing product you are using requires a primer, apply it to the entire shower area according to the manufacturer’s instructions. The primer helps the waterproof membrane adhere better to the surface.
Step 3: Seal Joints and Corners
Use waterproof tape to seal all joints and corners in the shower area. This includes the junctions between walls and floors, and any corners where water is likely to accumulate. Press the tape firmly to ensure a good seal. For information on sealing chemicals check wetroomsdesign.co.uk/sealing-chemicals.
Step 4: Apply the Waterproof Membrane
For Liquid Waterproof Membrane
- First Coat: Using a brush or roller, apply the first coat of the liquid membrane evenly across the entire surface. Ensure thorough coverage, especially around joints and corners.
- Allow to Dry: Let the first coat dry completely as per the manufacturer’s instructions.
- Second Coat: Apply a second coat in the opposite direction to the first. This ensures complete coverage and adds an extra layer of protection.
- Drying Time: Allow the second coat to dry thoroughly before proceeding.
For Sheet Membrane
- Cut Sheets to Size: Measure the shower area and cut the sheet membrane to fit. Ensure you have enough material to cover all surfaces with some overlap.
- Apply Adhesive: If the membrane requires adhesive, apply it to the surface using a trowel.
- Lay the Membrane: Carefully place the sheet membrane onto the adhesive, smoothing out any air bubbles or wrinkles as you go.
- Seal Edges: Use waterproof tape to seal the edges and overlaps of the membrane to ensure a watertight seal.
Step 5: Reinforce Critical Areas
For areas that are prone to higher water exposure, such as around the shower drain, reinforce with an additional layer of membrane or waterproof tape. Ensure these areas are particularly well-sealed.
Step 6: Check for Gaps and Coverage
Inspect the entire shower area for any gaps or missed spots. Apply additional waterproof membrane or tape as necessary to ensure complete coverage.
Step 7: Allow to Cure
Allow the waterproofing membrane to cure fully. This curing period can vary depending on the product used, so follow the manufacturer’s recommendations. It’s crucial not to rush this step, as the effectiveness of the waterproofing depends on proper curing.
Step 8: Test the Waterproofing
Before proceeding with tiling or other finishes, test the waterproofing by lightly spraying water over the surface. Check for any signs of water penetration. If any leaks are found, address them immediately by applying additional waterproofing material.
Step 9: Finish the Shower
Once you are confident that the shower area is fully waterproofed, proceed with tiling or applying other finishes. Use a high-quality, waterproof tile adhesive and grout to ensure continued protection against water ingress.
Maintenance Tips
To maintain the effectiveness of your tanked shower, regularly inspect the grout and seals for any signs of wear or damage. Address any issues promptly to prevent water from penetrating the waterproof barrier.
Conclusion
Tanking a shower is an essential process for ensuring the longevity and integrity of your bathroom. By creating a watertight barrier, you prevent water damage, mold growth, and other potential issues. Whether it’s a legal requirement or not, waterproofing your shower is a wise investment in the health and safety of your home.
By following the step-by-step guide outlined above, you can achieve a perfectly tanked shower that will stand the test of time. Remember to choose the right waterproofing method for your needs, prepare the surface properly, and apply the membrane carefully for the best results.