Don’t Let Water Damage Destroy Your Bathroom – Start With Proper Waterproofing

Leaking showers are one of the most common causes of hidden water damage in homes and commercial buildings. Left untreated, they can lead to costly repairs, structural damage, and even health risks from mould and mildew. At Leaky Showers, we’ve seen it all—over 20 years of fixing poor waterproofing across Brisbane, Gold Coast, Logan, and Redland Bay.

The key to preventing these issues is a high-quality, professionally installed waterproofing system. Whether you’re renovating, building, or repairing, our guide explains how to waterproof a shower properly for lasting protection.

Why Proper Shower Waterproofing Is Essential

Bathrooms are wet areas by design, but water should never seep beneath tiles or into surrounding walls and floors. Poor waterproofing often results in:

  • Cracked tiles and grout lines
    • Water leaks into adjoining rooms
    • Swollen cabinetry and timber rot
    • Mould growth in hidden areas
    • Major structural repairs costing thousands

The solution? Installing a robust waterproof membrane that acts as a barrier to stop water penetration. This is not a step to cut corners on—it’s the foundation for a long-lasting, healthy bathroom.

Preparing the Shower Area: Getting It Right From the Start

Preparation is critical before applying any waterproofing product. Our process ensures the shower recess and surrounding areas are ready for a watertight seal:

1. Assess and Repair the Substrate

We start by inspecting the shower floor and walls for cracks, uneven surfaces, or existing damage. Repairs are made to ensure a stable base.

2. Install Cement Sheeting

Cement sheeting is the preferred substrate for tiling because it resists moisture better than plasterboard. All screw holes and seams are sealed to prevent leaks.

3. Slope the Shower Recess Correctly

Proper slope in the shower recess ensures water flows to the drain and doesn’t pool. Even slight misalignments can cause water buildup over time.

4. Clean and Dry Surfaces

The shower floor and walls must be completely clean and dry for the waterproofing membrane to adhere properly.

Choosing Between Liquid Membrane and Sheet Membrane Systems

When it comes to waterproofing, two main systems dominate: liquid membranes and sheet membranes. Both are effective when applied correctly.

Liquid Membranes

  • Applied with rollers, brushes, or sprayers
    • Flexible and ideal for complex areas like corners and niches
    • Forms a seamless, joint-free waterproof layer
    • Requires at least two coats for full effectiveness

Sheet Membranes

  • Large rolls applied with adhesives over walls and floors
    • Offers consistent thickness and durability
    • Best suited for large, flat surfaces
    • Excellent for commercial or high-traffic bathrooms

Our Approach

We often combine the two—using liquid membranes for tricky areas and sheet membranes for larger, open spaces. This hybrid method delivers maximum protection in wet areas like Brisbane’s high-humidity bathrooms or coastal Gold Coast homes.

Applying Multiple Coats for Long-Term Protection

One coat isn’t enough. Professional waterproofing involves a multi-layer process to ensure no weak spots:

  • ✔ First coat – penetrates and seals the substrate.
    • ✔ Second coat – builds up thickness and strength.
    • ✔ Optional third coat – applied in high-risk areas or commercial showers.

Each coat is allowed to cure fully before the next is applied. We also ensure overlaps at corners, joints, and shower recesses to prevent water ingress.

Cost-Effective Shower Waterproofing Solutions

We understand that homeowners and property managers are looking for value. That’s why we offer tailored waterproofing services across Logan, Redland Bay, Gold Coast, and Brisbane:

  • Liquid membranes – affordable, ideal for small bathrooms and renovations.
    • Sheet membranes – longer-lasting, perfect for commercial or large bathrooms.
    • Hybrid systems – maximum protection where needed most.

A well-installed system prevents costly repairs later. As we like to say: fixing it early saves you thousands later.

Maintaining a Waterproofed Shower

Even the best waterproofing needs occasional checks. Maintenance helps extend the life of your system:

  • Inspect grout and silicone joints annually.
    • Look for cracks or peeling in membranes.
    • Address mould or moisture immediately.
    • Hire professionals for regular inspections, especially in older properties.

Our team offers maintenance services to keep your bathroom in top condition, especially in humid climates like the Gold Coast.

Common Signs of Poor Waterproofing

  • Damp or discoloured walls near the shower
    • Crumbling grout or loose tiles
    • A musty smell in the bathroom
    • Water pooling outside the shower recess
    • Visible cracks in the floor or walls

If you notice any of these, call our team immediately. Early intervention prevents major structural damage.

DIY Waterproofing vs. Professional Services

DIY waterproofing kits might seem like a cost-saving option, but mistakes are common:

  • Incorrect thickness of coats
    • Missed edges or corners
    • Poor adhesion leading to leaks later

Our team brings:

  • Over 20 years of local experience
    • Compliance with Australian Standards (AS 3740)
    • High-grade tools and materials
    • Warranties on all work

For properties in Brisbane, Logan, Redland Bay, and Gold Coast, we recommend professional installation every time.

FAQs About Shower Waterproofing

What is the best way to waterproof a shower?

A combination of liquid and sheet membranes applied by a professional ensures a durable, watertight system.

What is the cheapest way to waterproof shower walls?

Liquid membranes are cost-effective and work well for most residential applications.

Can you waterproof a shower without removing tiles?

We use epoxy and advanced sealants to stop water from getting behind the tiles.

Do you waterproof under a shower base in Australia?

Yes. Australian Standards require full waterproofing under and around shower bases to protect subfloors.

Protect Your Bathroom Today – Serving Brisbane, Gold Coast, Logan & Redland Bay

Don’t wait for leaks to cause structural damage. Contact Leaky Showers for expert waterproofing services. We provide:

  • Fast, professional service for residential and commercial properties
    • Cost-effective solutions tailored to your needs
    • Local expertise in Brisbane, Gold Coast, Logan, and Redland Bay
    • Free assessments and quotes

Call us now on 0403 558 896 or book a free quote and take the first step toward a safe, leak-free bathroom.l.