CHEMFLEX RBE — PU-Modified Rubberized Bitumen Emulsion
CHEMFLEX RBE is a single-component, high-build, thixotropic emulsified bitumen coating engineered for demanding waterproofing applications. What sets it apart from conventional bitumen coatings is its modification with polyurethane (PU) pre-polymers and a neoprene-type synthetic rubber copolymer — a formulation designed to overcome the brittleness and limited flexibility that standard bitumen products often struggle with over time.
How it works
The fusion of PU pre-polymer and neoprene rubber into the bitumen emulsion fundamentally changes how the cured coating behaves. Rather than a rigid, purely bituminous film, CHEMFLEX RBE cures into a coating with significantly better elongation, faster recovery after stretching, and improved flexibility even in cold conditions — properties that matter most exactly when a waterproofing layer is under the most stress, such as during structural movement or temperature swings.
Key benefits
- Single-component formulation — ready to use without complex on-site mixing
- High-build, thixotropic consistency for controlled, even application without excessive sagging on vertical surfaces
- Superior elongation and recovery compared to standard bitumen coatings
- Cold flexibility, reducing the risk of cracking in lower-temperature conditions
- PU and neoprene rubber modification for enhanced long-term durability
Where it’s used
CHEMFLEX RBE is well suited for waterproofing applications where flexibility and elongation are critical — foundations, retaining walls, planter boxes, below-grade structures, and other surfaces exposed to structural movement or fluctuating temperatures. Its high-build, thixotropic nature also makes it practical for vertical surface applications where a coating needs to stay in place without running.
Why it matters for your project
Standard bitumen coatings can become brittle and crack under movement or cold exposure, creating new points of water ingress right where flexibility is needed most. CHEMFLEX RBE’s PU and rubber-modified formulation is built to flex and recover rather than fail, making it a dependable choice for contractors seeking a durable rubberized bitumen waterproofing coating in Malaysia.
