CrysoFlex SBS Modified Bitumen Waterproofing Membrane
CrysoFlex SBS Modified Bitumen Waterproofing Membrane is a premium-grade polymer-modified bitumen waterproofing solution engineered specifically for cold climate applications. The name “CrysoFlex” combines “cryo-” (cold) with “flex” (flexibility), reflecting its exceptional performance in low-temperature environments where conventional membranes become brittle and fail.
Formulated with styrene-butadiene-styrene (SBS) thermoplastic elastomers, this membrane maintains flexibility at temperatures as low as -25°C, ensuring reliable waterproofing protection throughout freeze-thaw cycles and extreme winter conditions. The special SBS modification transforms standard bitumen into a high-performance elastomeric material with rubber-like properties.
Reinforced with high-tenacity non-woven polyester fabric, CrysoFlex delivers outstanding tensile strength, puncture resistance, and dimensional stability, making it the preferred choice for infrastructure projects in cold regions, high-altitude constructions, and temperature-variable environments.
Key Advantages
1. Superior Low-Temperature Flexibility
CrysoFlex maintains flexibility down to -25°C (Type II) , preventing cracking and delamination during winter contraction and freeze-thaw cycles. Unlike conventional membranes that become stiff and brittle, CrysoFlex remains elastomeric, accommodating structural movements in cold conditions.
2. SBS Polymer Modification
The styrene-butadiene-styrene (SBS) thermoplastic elastomer modification creates a three-dimensional polymer network within the bitumen, imparting rubber-like elasticity, superior adhesion, and enhanced aging resistance.
3. High-Strength Polyester Reinforcement
Reinforced with non-woven continuous filament polyester fabric, providing:
High tensile strength (≥800 N/50mm for Type II)
Excellent elongation at break (≥40%)
Superior puncture and tear resistance
Dimensional stability under thermal stress
4. Proven Durability
Engineered for long-term performance with:
Heat resistance up to 90°C (no flow or slippage)
UV resistance for exposed installation periods
Fatigue resistance for dynamic structural movements
Chemical resistance to de-icing salts and soil chemicals
5. Multi-Application Versatility
Suitable for both new construction and refurbishment projects across roofing, underground, and civil engineering applications.
6. Quality Assured
Manufactured in compliance with GB 18242 (Type II), EN 13707, and EN 13969 standards. CE marked and third-party certified for performance and reliability.
7. Sustainable Solution
Contains no asbestos, tar, or hazardous substances. Recyclable at end of service life through bitumen recycling processes for road asphalt production.
Technical Specifications
| Property | Test Method | Type I Value | Type II Value |
|---|---|---|---|
| Thickness | GB/T 328.4 | 3.0mm / 4.0mm | 3.0mm / 4.0mm |
| Low Temperature Flexibility | GB/T 328.14 / EN 1109 | ≤ -20°C (no cracks) | ≤ -25°C (no cracks) |
| Heat Resistance | GB/T 328.11 | 85°C (no flow) | 90°C (no flow) |
| Tensile Strength (Longitudinal) | GB/T 328.8 | ≥500 N/50mm | ≥800 N/50mm |
| Elongation at Break | GB/T 328.8 | ≥30% | ≥40% |
| Tear Resistance | GB/T 328.19 | ≥250 N | ≥350 N |
| Impermeability | GB/T 328.10 | 0.3 MPa, 30 min (no leakage) | 0.3 MPa, 30 min (no leakage) |
| Softening Point | GB/T 4507 | ≥100°C | ≥105°C |
| SBS Content | Internal Method | ≥12% | ≥15% |
| Reinforcement Type | Visual | Polyester non-woven | Polyester non-woven |
| Top Surface Finish | – | Mineral granules / Sand / Film | Mineral granules / Sand / Film |
| Roll Dimensions | – | 1.0m x 7.5m / 10m | 1.0m x 7.5m / 10m |
Note: Specifications may vary by thickness and surface finish. Custom specifications available upon request.
Applications
Cold climate roofing (residential, commercial, industrial)
Bridge decks and highway structures
Underground parking and foundations
Tunnels and subway systems
Water treatment facilities
Ski resorts and mountain buildings
Refrigerated warehouses and cold storage
Infrastructure projects in freeze-thaw zones
Why Choose CrysoFlex for Cold Climate Projects?
Engineered for Winter Conditions
Standard waterproofing membranes become brittle and crack when temperatures drop below freezing. CrysoFlex is specifically formulated to maintain flexibility and adhesion in sub-zero environments, ensuring year-round protection.
Proven Performance in Freeze-Thaw Cycles
In regions where temperatures fluctuate above and below freezing daily, membranes must withstand repeated expansion and contraction. CrysoFlex’s elastomeric properties provide the necessary elongation and recovery to accommodate these stresses without failure.
Infrastructure-Grade Durability
From mountain tunnels to bridge decks exposed to de-icing salts, CrysoFlex delivers the mechanical strength and chemical resistance required for critical infrastructure projects.
Global Standards Compliance
GB 18242-2008 – Chinese national standard for SBS membranes (Type II)
EN 13707 – Flexible sheets for waterproofing
EN 13969 – Bitumen damp proof sheets
ISO 9001 – Quality management certification
FAQ – Frequently Asked Questions
Q: What makes CrysoFlex different from standard SBS membranes?
A: CrysoFlex is formulated with enhanced SBS polymer content and selected base bitumens to achieve superior low-temperature flexibility down to -25°C (Type II), exceeding standard requirements for cold climate applications.
Q: Can CrysoFlex be installed in winter conditions?
A: Yes, with proper precautions. The membrane itself remains flexible at low temperatures, but torch application requires careful technique in cold weather. We recommend storing membranes warm before installation and following our cold weather installation guidelines.
Q: What is the warranty period?
A: Standard warranty is 10 years, with extended warranties up to 20 years available for certified applicators and approved systems.
Q: Is CrysoFlex suitable for green roofing systems?
A: Yes, when protected with appropriate root barrier layers or when specified with our root-resistant formulation. Contact our technical team for green roof system recommendations.
Q: How does CrysoFlex perform against de-icing salts?
A: CrysoFlex exhibits excellent resistance to de-icing salts and road chemicals, making it ideal for bridge decks, parking structures, and infrastructure exposed to winter maintenance chemicals.
Q: Can CrysoFlex be recycled?
A: Yes. SBS-modified bitumen membranes can be recycled through bitumen recycling processes for road asphalt production, reducing environmental impact.
Q: What is the difference between Type I and Type II?
A: Type I offers low-temperature flexibility to -20°C, suitable for most temperate climates. Type II provides enhanced flexibility to -25°C, recommended for severe cold regions and critical infrastructure projects.
Request a Quote or Sample
Contact our technical sales team for:
Product samples and literature
Technical data sheets
Installation training
Project-specific recommendations
Cold climate design assistance