Sim Flex

Extreme Elastic SBS Waterproofing Membrane

–25°C Cold Flexibility | 100°C Heat Resistance (Minimum)

Sim Flex is a highly elastic SBS-modified bituminous waterproofing membrane designed for structures exposed to extreme temperature variations and structural movements.

Manufactured with advanced elastomeric bitumen technology, it provides outstanding flexibility and mechanical durability.

PRODUCT STRUCTURE

Sim Flex is produced with:

• SBS-modified bitumen
• Special fine mineral granule–coated upper surface
• Polyethylene film–coated lower surface
• High-strength polyester felt reinforcement

With a bitumen elongation rate of 1800% and a –25°C cold flexibility performance, it delivers exceptional crack-bridging capability and resistance to thermal stress.

EXTREME FLEXIBILITY PERFORMANCE

Sim Flex is engineered for environments where:

• Temperatures drop far below freezing
• Structural movements are significant
• Expansion joint performance is critical

Its superior elasticity allows the membrane to absorb structural stresses without cracking or losing waterproofing integrity.

APPLICATION AREAS

Sim Flex can be safely used in:

• Soil-contacting walls
• Curtain walls
• Expansion joint details
• Terraces (vertical and horizontal surfaces)
• Reinforced concrete structures
• Wood and metal substrates

It adapts easily to different substrates and complex detailing areas.

KEY FEATURES

• 1800% Bitumen Elongation
• –25°C Cold Flexibility
• Single-layer application (5 mm thickness)
• Superior crack-bridging capacity
• Self-healing property
• Extra resistance to impact, tearing, and puncture
• Suitable for complex waterproofing details
• Economical high-performance solution

WHY CHOOSE SIM FLEX?

• Ideal for cold climate zones
• Excellent performance in expansion joint applications
• Long-term durability under structural movement
• Reliable solution for demanding construction projects