Why Waterproofing Your Shower Area Matters More Than You Think
Many of our clients are asking us, “Shall I get my Shower Area Waterproofed? “
When it comes to bathroom renovations, one of the most important steps homeowners often overlook is bathroom waterproofing. It might not be the most exciting part of your project, but it’s what keeps your bathroom safe from leaks, damp, and mould for years to come.
At Billy the Tiler, we’ve helped many clients across Cheltenham, Stroud, Winchcombe, and the Cotswolds repair water damage caused by poor preparation or missing waterproofing. With the right method and materials, you can prevent these problems completely.
Why Bathroom Waterproofing Matters
Tiles and grout may look waterproof, but they’re not. Over time, small amounts of moisture can pass through and soak into the wall or floor beneath. Without a proper waterproof layer, that moisture can lead to swelling, mould, or even structural damage.
By applying a waterproofing membrane (often called tanking), you create a barrier that stops water from getting through. This extra step protects your home, saves money on repairs, and keeps your bathroom looking new for much longer.
Learn more about UK waterproofing standards on the British Standards Institution website.
Shall I Get my Shower Area Waterproofed? How to do it?
Our Waterproofing Process at Billy the Tiler
Every bathroom is different, but the goal is the same: create a strong, watertight seal before the first tile goes on. Here’s how our team handles bathroom waterproofing in Cheltenham and surrounding areas:
1. Preparing the Surface
We start by cleaning the walls and floors to remove dust, grease, or debris. Any gaps or cracks are filled, and we make sure everything is level before waterproofing begins.
2. Applying the Membrane
We apply a liquid waterproofing membrane or use sheet membranes depending on the design. Liquid systems are brushed or rolled onto the surface, forming a flexible seal when dry. Sheet membranes offer extra strength in high-moisture areas like showers or wet rooms.
3. Reinforcing Corners and Joints
Corners, screw holes, and seams are common leak points. Our team seals these areas using tape or corner pieces before adding extra layers of membrane for long-lasting protection.
4. Allowing Proper Drying Time
We never rush the drying process. Allowing the membrane to fully cure ensures maximum strength and durability before tiling starts.
Common Waterproofing Mistakes
Many bathroom leaks we repair started with small mistakes that could have been avoided. Here are the most common issues we see:
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Skipping waterproofing completely
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Leaving corners or joints unsealed
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Using unsuitable materials
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Tiling before the membrane dries
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Waterproofing is only part of the shower area
Each of these shortcuts can cause serious problems later. Proper waterproofing might seem like an extra step, but it saves homeowners time, stress, and money.
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How to Check if Your Bathroom Is Properly Waterproofed
If you’re managing your own renovation or hiring someone else, here’s what you can do to make sure your shower is waterproofed correctly:
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Ask what waterproofing system your tiler uses.
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Make sure the waterproofing covers all wet areas, not just around the shower tray.
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Check that the walls, corners, and any built-in shower niches are sealed.
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Never let anyone tile directly onto plasterboard or bare cement without waterproofing first.
For more tips on getting your bathroom ready for tiling, visit our article on How to Prepare Your Area Before Tiling.
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Take a look at the example photos of badly done waterproofing.
This is an example of a membrane applied directly to the paint without preparing the wall. The tape has peeled off the wall with ease. Do not let this happen in your bathroom!
Final Thoughts
Waterproofing isn’t just a background step — it’s the foundation of a long-lasting, beautiful bathroom. At Billy the Tiler, we take every detail seriously, from preparation to the final grout line.
If you’re planning a bathroom renovation in Cheltenham or the Cotswolds, we’d love to help you get it right from the start.
👉 Book a consultation or visit our Tiling Services page to learn more about how we can make your next project last a lifetime.
