Bituminous Membranes
StressPly Flex
This SBS modified bitumen membrane flat roof system delivers waterproofing across refurbishment and new build projects. StressPly Flex provides reliable protection with a tensile strength of 1000/800 N/50mm (BS 8747), and is suitable for both warm and cold roof applications.
High tensile & tear strength
1000/800 N/50mm
BS 8747 · high tensile
Reliable
waterproofing
Watertight at 100 kPa
EN 1928
Fire
performance
BROOF(t4) · CEN/TS 1187 Test 4
EN 13501-5
Low-temperature flexibility
−25°C
EN 1109
Durable, long-term performance
BBA
durability certified
Why Choose StressPly Flex?
High Tensile Strength
1000N/50mm tensile strength (BS 8747), supporting tear resistance and puncture protection.
Refurbishment Specialist
Specified for warm and cold roof refurbishment across the UK.
Application Versatility
Suitable for warm and inverted roof specifications with reliable performance.
Aesthetic Choice
Available in charcoal and brown slate finishes to match building aesthetics.
System Components
Multi-layer built-up membrane system with a tensile strength of 1000/800 N/50mm (BS 8747), specified for refurbishment and new-build applications.
StressPly Flex
Mineral Cap Sheet
4.6mm bituminous slate finished cap sheet providing longitudinal tensile strength of 1000N/50mm. The mineral slate finish offers UV protection, with charcoal and brown colour options to suit building aesthetics. Composite reinforcement supports tear strength across refurbishment applications.
Torch Flex Ultra-Vent
Reinforced Underlayment
Torch-on base sheet with low-melt strips that allow trapped vapour to disperse throughout the system, preventing blistering and ensuring system longevity.
Torch Flex Vapour Barrier
Air and Vapour Control Layer (AVCL)
SBS modified metal-lined vapour control layer preventing water vapour infiltration that can cause condensation damage and system failure.
Quick Reference
| Layer | Tensile strength - L/T (N/5cm) | Thickness (mm) | Low Temp. Flex (°C) | Length (m) | Width (m) |
|---|---|---|---|---|---|
| StressPly Flex | 1000/800 | 4.6 | -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.
