Heavy-Duty Waterproofing for Internal Walls & Basements

The Cementone Waterproof Tanking Slurry – 25kg is a professional-grade, cementitious coating designed to provide long-lasting waterproof protection for internal brickwork, stone, and concrete surfaces. Suitable for both above and below ground use, this breathable grey slurry is ideal for protecting areas prone to moisture and water ingress.

With a simple 2-coat brush application, Cementone Tanking Slurry forms a highly durable barrier that resists both positive and negative water pressure—perfect for use on basement walls, retaining structures, tunnels, wet rooms, and showers. It also allows water vapour to pass through, helping prevent condensation and maintain structural health.

WRAS-approved and easy to mix, it’s a trusted choice for professionals seeking reliable waterproofing without compromising breathability.

Features & Benefits:

• Breathable Waterproofing – Blocks liquid water while allowing vapour to escape
• Dual Pressure Resistance – Effective against both positive and negative water pressure
• Flexible Application – Ideal for above and below ground use
• 2-Coat Brush System – Easy to mix and apply for long-lasting coverage
• Versatile Surface Compatibility – Use on concrete, stone, and brickwork
• Internal Use – Perfect for basements, tunnels, wet rooms, retaining walls, and more
• WRAS Approved – Safe for use in contact with potable water
• Colour: Grey
• Pack Size: 25kg bag

Perfect For:

• Waterproofing internal walls in basements or cellars

• Wet rooms, bathrooms, and showers

• Concrete and masonry retaining walls

• Tunnels and water-prone below-ground structures

• Builders, contractors, and renovators needing a breathable solution

Why Choose Cementone Waterproof Tanking Slurry?

When you need dependable waterproofing that won’t trap moisture, Cementone Tanking Slurry delivers. With professional-grade performance, WRAS approval, and straightforward application, it's ideal for critical damp protection across a range of construction projects.