Introduction
Lifetime economies, environmentally sound
The Duoflex® Structural Waterproofing System is a hot-melt system, which provides a strong, durable, flexible, lightweight and self-healing monolithic barrier to the transmission of water and water vapour. Designed to last the lifetime of the structure to which it is applied, it eliminates future maintenance and gives rise to particularly low life cycle costs.
Duoflex is an environmentally friendly formulation of rubberised bitumen, modified with SBS styrene butadiene polymer resins, supplied in solid blocks ready for on site melting.
With superior mechanical properties and minimal environmental impact, Duoflex offers a substantial material saving compared with alternative hot-melt waterproofing systems.
Duoflex is designed to retain its durability and elasticity, absorbing repeated movements and stress within concrete or plywood structural decks.
The Duoflex® system in principle
The system consists of a primer coat applied to the structural deck, followed by two coats of Duoflex liquid waterproofing with a reinforcing fabric embedded between the two coats and, finally, an access protection sheet. Once the Duoflex system is in place, other finishing layers are added, eg, for pedestrian/vehicular traffic, or other roof features.
Agrément Certificate 10/4745 - Part 1 Roofing & Part 2 Waterproofing
Applications
The Duoflex system is typically used to waterproof:
- Protected/inverted roofs
- Green roofs (eg, the Flag-Soprema Optigreen® system)
- Plaza decks and podiums
- Bridges, roadways and car parks
- Water features
- Plant and equipment bases
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