When it comes to surface protection, homeowners and builders are increasingly looking for smart solutions that combine performance, aesthetics, and ease of application. One such solution is a liquid-applied waterproofing membrane that can be used as a top coat — ideal for protecting existing substrates without the need for removal or re-tiling. Better still? These membranes are now available in a wide range of colours, including semi-clear options.

Here’s why this approach is gaining popularity, and how to know if it’s right for your project.

Apply Directly Over Existing Surfaces

One of the biggest advantages of using a liquid waterproofing membrane is that it can be installed directly over an existing surface. Every formula has different compatibility, but the SEMCOWorks AU membrane is suitable for use on materials such as

• Concrete
• Tiled surfaces
• Wood
• Cladding
• Metal
• Asphalt
• Masonry (bricks)

The key is to ensure the existing substrate is stable, clean, and properly prepared. Once prepped, our liquid membrane is simply applied with a roller, brush, or spray gun, creating a fully bonded, seamless barrier.

Colour Options to Suit Any Design

Traditional waterproofing products often require you to hide them beneath tiles or coatings. But with modern systems, the membrane is the finish.

That means you can choose from:

• Solid Colours: Our range includes classic options like black, white, and beige — ideal for blending with existing palettes. We also offer high-visibility colours like orange and blue, for use before resurfacing.
• Semi-clear: This allows the texture and character of the original surface to subtly through — ideal for concrete, stone, timber or other decorative substrates you want to protect without covering completely.

This opens up creative freedom while still delivering professional-grade protection.

Waterproofing + Sealing in One Step

These membranes don’t just look good — they perform. Once cured, they form a flexible, UV-resistant, and water-tight seal that:

• Prevents water ingress
• Resists mould and mildew
• Tolerates foot traffic and weather exposure
• Can be used in wet areas, balconies, planter boxes, and more

Because the membrane is both decorative and functional, it eliminates the need for additional topcoats or sealers, streamlining the process and reducing future maintenance.

Ideal for Renovations, Upgrades, and Surface Protection

Whether you're freshening up a tired deck, sealing an al fresco tabletop, or protecting outdoor steps, this kind of membrane is a smart choice for:

• Waterproofing over existing materials without removal
• Colour-matching to your architectural palette
• Highlighting original textures with a semi-clear finish
• Saving time on site with a single product solution

Things to Keep in Mind

• Surface preparation is key: Even the best membrane won’t adhere to a dirty or loose surface. Always follow the manufacturer’s prep instructions.
• Choose the right membrane for your use case: Some are suitable for trafficable surfaces, while others are best for vertical or decorative use.
• Ensure compliance for wet areas: For bathrooms and other internal wet zones, use membranes that meet AS 3740 and consult a licensed applicator if needed (some Australian states require a certified professional to undertake works).

Ready to Protect and Transform?

Our liquid membrane system is available in a curated colour range — including semi-clear — to suit both design and performance needs. Shop Now.