Professional Roofing & Waterproofing Products

The Sika Index Waterproofing Membrane Black 4mm (1000mm x 10m) is a premium torch-on waterproofing membrane engineered to deliver long-lasting protection against water penetration in demanding construction environments. Manufactured by Sika, one of the world’s leading construction chemical companies, this membrane combines excellent waterproof performance with superior mechanical strength and flexibility.

Designed for professional waterproofing systems, the membrane is suitable for flat concrete roofs, roof slabs, balconies, terraces, retaining walls, foundations and underground structures. Its reinforced construction provides excellent puncture resistance, tear resistance and dimensional stability while maintaining flexibility to accommodate normal building movement.

The 4mm membrane forms a seamless waterproof barrier when professionally installed using the torch-on method. Its outstanding adhesion, watertight performance and durability make it suitable for both new construction projects and refurbishment of existing waterproofing systems.