Bituminous Membranes
StressPly Flex
High-strength torch-on bitumen system with decades of proven performance across UK refurbishment projects. StressPly Flex delivers reliable waterproofing protection with high tensile and tear strength, suitable for both warm and cold roof applications. A heritage system that continues to protect buildings nationwide.
Why Choose StressPly Flex?
High Tensile Strength
1000N/50mm tensile strength delivers exceptional tear resistance and puncture protection.
Refurbishment Specialist
Proven track record across thousands of UK refurbishment projects over decades.
Application Versatility
Suitable for warm and cold roof specifications with reliable performance.
Aesthetic Choice
Available in charcoal and brown slate finishes to match building aesthetics.
System Components
Three-layer built-up membrane system combining high-strength protection with proven refurbishment performance.
StressPly Flex
Mineral Cap Sheet
4.6mm bituminous slate finished cap sheet providing longitudinal and tensile strength of 1000N/50mm. The mineral slate finish offers UV protection and weather resistance, with charcoal and brown colour options to suit building aesthetics. Composite reinforcement ensures exceptional tear strength and durability across demanding refurbishment applications.
Torch Flex Ultra-Vent
Reinforced Underlayment
High-performance torch-on base sheet utilising adhesive strips on the underside to allow trapped vapour dispersion throughout the roof system. This ventilation technology prevents membrane blistering and ensures long-term system integrity. Embedded reinforcement provides the strength foundation for the complete build-up, suitable for both warm and cold roof specifications.
Torch Flex Vapour Barrier
Air and Vapour Control Layer (AVCL)
SBS modified metal-lined vapour control layer for torch-on applications, preventing water vapour from entering the waterproofing system. This membrane stops the formation of condensation that can cause structural damage and insulation performance loss. Essential for maintaining the thermal efficiency and longevity of the complete roof build-up.
Quick Reference
| Layer | Tensile strength - L/T (N/5cm) | Thickness (mm) | Low Temp. Flex (°C) | Length (m) | Width (m) |
|---|---|---|---|---|---|
| StressPly Signature Cap | 1000/800 | 4.2 | -25 | 7.5 | 1.0 |
| Torch Flex Ultra Vent | 900/700 | 3.5 | -20 | 8 | 1.0 |
| Torch Flex Vapour Barrier | 1400/1400 | 3.0 | -20 | 10 | 1.0 |
Need specification advice?
Your local Garland UK Technical Manager can help assess your roof, develop the appropriate specification, and recommend the right StressPly system for your project.
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.
