When installing windows, curtain wall systems, gutters, or façade joints, choosing the right EPDM perimeter sealing membrane is essential for long-term weatherproofing and structural movement protection.
The ARBO Easy Stick GS EPDM membrane is designed specifically for high-performance sealing applications where durability, flexibility and UV resistance are required.
Unlike basic flashing tapes or bitumen membranes, this reinforced EPDM membrane provides a long service life, excellent movement accommodation, and reliable waterproof sealing even in exposed external conditions.
In this guide, we explain what makes ARBO Easy Stick GS different, how to apply it correctly, and why EPDM membranes are preferred for perimeter sealing in modern construction.
What is an EPDM perimeter sealing membrane?
An EPDM perimeter sealing membrane is a flexible waterproof barrier used around structural openings to prevent water, air and wind penetration.
They are commonly used around:
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Windows and doors
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Curtain wall facades
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Roof gutters
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Cavity wall openings
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Structural joints
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Expansion gaps
EPDM membranes are preferred over standard flashing tapes because they offer:
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Much longer lifespan
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Higher flexibility
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Better UV resistance
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Superior waterproof performance
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Strong adhesion to multiple substrates
The ARBO Easy Stick GS EPDM membrane is designed for these demanding applications where standard sealing tapes may fail over time.
What makes ARBO Easy Stick GS different from other membranes?
Durability and long lifespan
ARBO Easy Stick GS is a 1.3 mm thick fibreglass-reinforced EPDM membrane with a butyl adhesive backing.
This combination provides excellent tensile strength, elongation and long-term stability.
Typical performance values include:
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Elongation ≥ 450% (EN 12311-2)
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Joint shear resistance ≥ 250 N / 50 mm (EN 12317-2)
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Expected lifespan up to 50 years under normal conditions
Many basic flashing tapes or bitumen membranes cannot match this level of durability or movement tolerance.
Because EPDM is naturally resistant to UV, ozone and temperature changes, the membrane remains flexible for decades without cracking.
High movement accommodation
Buildings expand and contract due to temperature, structural load and settlement.
A standard tape may split or lose adhesion, allowing water ingress.
The fibreglass-reinforced EPDM + butyl adhesive system used in Easy Stick GS allows the membrane to move with the structure while maintaining a watertight seal.
This makes it ideal for:
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Window perimeter sealing
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Curtain wall systems
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Steel frame construction
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Concrete openings
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Large structural joints
Compared to basic polymer tapes, EPDM membranes provide far greater reliability in long-term applications.
Wide application versatility
ARBO Easy Stick GS is available in widths up to 1 metre and supplied in 20-metre rolls, making it suitable for both small and large sealing areas.
Typical uses include:
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Window frame sealing
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Door perimeter sealing
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Roof gutter lining
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Facade sealing
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Cavity wall sealing
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Industrial building joints
Because the membrane is UV resistant, it can be used externally as well as internally, unlike many sealing tapes which must be covered.
Fast and simple installation
The membrane features a self-adhesive butyl backing with split release liner, allowing quick and accurate positioning during installation.
Benefits of self-adhesive EPDM membrane:
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No heat welding required
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No liquid adhesive needed in most cases
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Clean installation
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Reduced labour time
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Immediate adhesion
This makes Easy Stick GS ideal for contractors who need reliable sealing with minimal installation time.
EPDM membrane vs flashing tape vs bitumen membrane
EPDM membranes are widely used in construction because they outperform traditional sealing materials.
| Material | Lifespan | Movement | UV resistance | Typical use |
|---|---|---|---|---|
| EPDM membrane | 40–50 years | Excellent | Excellent | Windows, facades, gutters |
| Bitumen tape | 5–15 years | Limited | Poor | Temporary sealing |
| Polymer flashing tape | 10–20 years | Moderate | Moderate | Light duty sealing |
| ARBO Easy Stick GS EPDM | Up to 50 years | Very high | Excellent | Structural sealing |
Because of this, EPDM perimeter membranes are now the preferred solution in modern building envelopes. EPDM membranes are widely used for sealing windows, facades, gutters and structural openings. In some applications a self-adhesive EPDM membrane such as ARBO Easy Stick GS is preferred, while in others a non-adhesive EPDM membrane may be used together with a separate membrane adhesive depending on the installation method. None adhesive membranes can be bonded using Arbo EPDM membrane adhesive in 600ml foil sausages.
For a technical overview of EPDM weatherproofing, see
https://www.constructionspecifier.com/epdm-membranes-weatherproofing/
How to apply ARBO Easy Stick GS EPDM membrane correctly
Correct installation is essential to achieve full performance.
1. Prepare the substrate
All surfaces must be:
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Clean
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Dry
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Free from dust, oil and grease
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Smooth with no sharp edges
Porous surfaces such as concrete or cement board may require primer.
Use ARBO AG2 Porous Primer where required to improve adhesion.
2. Measure and cut the membrane
Select the required width.
Easy Stick GS can be cut to suit the opening, allowing accurate fitting around frames, gutters or structural joints.
3. Peel and stick
Remove part of the liner and press the adhesive side firmly onto the surface.
Work gradually to avoid trapping air.
The split liner allows accurate positioning.
4. Form the seal
Extend the membrane around the opening or joint.
Ensure overlaps are correctly formed and connected to adjacent membranes.
Pay extra attention to corners and movement joints.
5. Inspect the installation
Check for:
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Wrinkles
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Voids
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Poor adhesion
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Contamination
Smooth the membrane to ensure full contact.
Edges can be finished with compatible sealant if required.
Key benefits of ARBO Easy Stick GS EPDM membrane
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Long-life EPDM perimeter sealing membrane
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Self-adhesive butyl backing for fast installation
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High flexibility and movement tolerance
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UV resistant and suitable for external use
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Strong adhesion to concrete, metal, timber and PVC
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Available in wide rolls up to 1 metre
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Suitable for windows, facades, gutters and structural joints
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Expected lifespan up to 50 years
These features make it one of the most reliable sealing membranes available for construction applications.
Why choose EPDM membrane instead of standard flashing tape?
Standard flashing tapes may be suitable for light duty sealing, but they often fail in long-term or exposed conditions.
EPDM membranes provide:
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Better weather resistance
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Longer lifespan
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Higher movement capability
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Stronger adhesion
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Improved waterproofing
For projects where failure is not acceptable, EPDM perimeter sealing membranes are the preferred solution.
Non-adhesive EPDM membrane and when it should be used
In some installations a self-adhesive EPDM membrane is not suitable, particularly where the substrate is uneven, heavily textured, or where a stronger bonded joint is required.
In these situations a non-adhesive EPDM membrane can be used together with a dedicated membrane adhesive.
Non-adhesive EPDM membranes are commonly installed using a butyl or synthetic rubber adhesive applied separately to the substrate before the membrane is positioned.
This method provides improved bonding strength and allows the installer to control the amount of adhesive applied, which is useful on porous or irregular surfaces.
Typical situations where non-adhesive EPDM membrane is preferred include:
Concrete openings and rough masonry
Steel frame construction
Large façade joints
Roof perimeter details
Gutter lining installations
Areas exposed to high movement or vibration
For these applications, a specialist membrane adhesive such as ARBO EPDM Membrane Adhesive is often used to achieve a strong and durable bond.
Unlike general construction adhesives, EPDM membrane adhesive is formulated to remain flexible while maintaining long-term waterproof sealing, allowing the membrane to move with the structure without losing adhesion.
Non-adhesive EPDM membranes combined with the correct adhesive system can provide the same long service life and weather resistance as self-adhesive membranes, while offering greater flexibility during installation.
Buy ARBO Easy Stick GS EPDM membrane
You can buy ARBO Easy Stick GS EPDM perimeter sealing membrane in multiple widths and roll sizes from Adhesive Supply Company.
Suitable for:
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Window sealing
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Door sealing
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Curtain wall systems
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Gutter lining
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Facade joints
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Structural openings
View the full range of EPDM sealing membranes on our website to see available sizes and trade pricing.
FAQ – EPDM perimeter sealing membranes
What is an EPDM perimeter sealing membrane used for?
It is used to seal around windows, doors, gutters and structural openings to prevent water and air ingress.
Is EPDM better than flashing tape?
Yes, EPDM membranes last longer, remain flexible and perform better in outdoor conditions.
Can EPDM membrane be used externally?
Yes, ARBO Easy Stick GS is UV resistant and suitable for exposed installations.
Do I need primer before applying EPDM membrane?
Porous surfaces such as concrete may require primer to achieve full adhesion.
How long does EPDM membrane last?
High-quality EPDM membranes can last up to 50 years when installed correctly.
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