Bituminous Membranes
StressPly Evolution
High-performance elastomeric SBS modified bitumen membrane that delivers exceptional flexibility and strength across diverse waterproofing applications. Advanced formulation provides superior thermal stability, mechanical resilience, and anti-aging properties for long-term building protection.
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Why Choose StressPly Evolution?
20 year Single-Point Guarantee
Complete project protection and peace of mind for your project.
BBA
Certified
Independently verified performance standards with certifications.
Recycled Content
Sustainable specification choice to align with your net zero goals.
Thermal and mechanical properties
Flexibility and strength across temperature extremes.
System Components
Three-layer engineered protection system
StressPly Evolution
Mineral Cap Sheet
UV protection and weatherproofing.
Mineral slate granule finish with thermo-fusible installation film. Suitable for warm and cold roof applications.
Torch Flex Evolution Base
Reinforced Underlayment
Superior strength foundation.
Polyester reinforcement with SBS modifiers delivers exceptional tear and puncture resistance. Temperature-indicator film ensures optimal application.
Torch Flex Vapour Barrier
Vapour Control Layer (VCL)
Prevents condensation damage.
SBS modified metal-lined barrier stops water vapour infiltration that causes system failure.
Quick Reference
| Layer | Tensile strength - L/T (N/5cm) | Thickness (mm) | Low Temp. Flex (°C) | Length (m) | Width (m) |
|---|---|---|---|---|---|
| StressPly Evolution Cap | 1000/800 | 4.2 | -25 | 6 | 1.0 |
| Torch Evolution Base | 850/650 | 4.0 | -15 | 8 | 1.0 |
| Torch Evolution VCL | 600/400 | 3.0 | -20 | 10 | 1.0 |
Found the right system for you?
Your local Garland UK Technical Manager is here to help you choose the right solution and
ensure your roof is protected for the future.
Read about our
systems in action.
Discover how we’ve transformed buildings across every sector, delivering lasting protection and peace of mind to our clients.
