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.

Mask Membrane Evo Header 1

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.

Stressply

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.

Stressply

Torch Flex Vapour Barrier

Vapour Control Layer (VCL)

Prevents condensation damage.

SBS modified metal-lined barrier stops water vapour infiltration that causes system failure.

Stressply

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.

Garland UK
Privacy Overview

This website uses cookies so that we can provide you with the best user experience possible. Cookie information is stored in your browser and performs functions such as recognising you when you return to our website and helping our team to understand which sections of the website you find most interesting and useful.