Liquid Roof

Professional-grade liquid waterproofing membrane from Sika. SikaRoof in Grey is a fast-curing, single-component polyurethane coating designed to create a seamless, flexible and durable waterproof layer on both flat and pitched roofs.

Moisture-triggered for reliable curing, it becomes rain-resistant in as little as 10 minutes and forms a tough, elastic membrane that adheres well to a wide range of substrates. Ideal for new roofs, extensions, repairs and refurbishment of leaking or ageing roof surfaces. Available in various tub sizes to suit different project scales.

Key Benefits

• Seamless waterproof membrane – Creates a continuous, flexible barrier against water ingress.
• Fast rain resistance – Becomes water-resistant in approximately 10 minutes.
• Moisture-curing formula – No separate catalyst required; cures using atmospheric moisture.
• Excellent adhesion – Suitable for concrete, metals, felt, asphalt, brick, tiles and many other common roofing substrates.
• Flexible & durable – Retains elasticity even at low temperatures and accommodates structural movement.
• Easy to apply – Can be applied by brush, roller or airless spray.
• Recoatable – Simple to maintain or extend service life without full strip-back.
• Multiple tub sizes available – Convenient options for small repairs through to larger areas.

Typical Applications

• Flat and pitched roof waterproofing
• Roof repairs and refurbishment
• Balconies, gutters and detailing
• New build and extension projects

Ideal for roofers and contractors seeking a high-performance, easy-to-use liquid roof membrane with a professional grey finish. A reliable choice for both emergency repairs and long-term waterproofing solutions.

Always prepare the substrate correctly and follow Sika’s application guidelines. Coverage rates vary depending on surface condition and porosity. Ensure suitable weather conditions during application and curing.