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EPAM – External Perimeter Class A Membrane
The new and unique ARBOSHIELD Pro® External Perimeter Class A Membrane (EPAM®) combines an industry leading self-adhesive, Class A2-s1,d0 reaction to fire along with a completely waterproof, airtight window and façade seal all in one easy to install product.
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Specify External Perimeter Class A Membrane (EPAM)
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Unique properties of EPAM
EPAM® eliminates the additional cost and on-site waste of traditional pasted systems ensuring a neat, fire safe, compliant, and trusted installation.
Industry leading Class A2-s1,d0 reaction to fire
Class W1 Rating for water penetration
Self-adhesive backing bonds in temperatures as low as -40°C
Exceeds current Building Regulation and Approved Document B requirements
Eliminates the additional cost and on-site waste of traditional pasted systems
Available in any size up to 1m wide (with a small additional lead time)
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Main Applications
EPAM delivers reliable performance across a wide range of façade and perimeter sealing applications.
Window Frames
Creates a fire-retardant, airtight and weathertight perimeter seal around window frames.
Weather Sealing
Can be used for weather sealing of parapet walls and weather proofing balcony details.
High-Rise Buildings
Ideal solution for buildings over 18m (11m in Scotland) where fire performance is critical.
Structural Connections
Creates watertight and airtight seals connecting a concrete structural frame or steel frame to SFS sections.
Technical Specifications & Downloads
| Description/Standard | Performance | |
|---|---|---|
| Reaction to Fire (EN 13501) | A2-s1,d0 | |
| Resistance to Water Penetration (EN 13859-1) | Class W1 | |
| Tensile Strength MD (EN 13859-1) | 4540 N/50mm BS EN 12311-1 | |
| Tensile Strength CD (EN 13859-1) | 2975 N/50mm BS EN 12311-1 | |
| Flexibility at Low Temperature (EN 13859-1) | -40 °C | |
| Water Vapour Transmission (ISO 12572) | 0.06sd | |
| Resistance to Nail Tearing MD (EN 13859-1) | 286N BS EN 12310-1 | |
| Resistance to Nail Tearing CD (EN 13859-1) | 321N BS EN 12310-1 |
Associated Products
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Class A Air & Vapour Control Layer - ARBOSHIELD Pro®
ARBOSHIELD Pro® Class A Air & Vapour Control Layer is a high performance air and vapour control layer featuring a low-emissivity reflective surface designed to combine Class A2-s1,d0 fire classification with high tensile strength, enhanced thermal performance and air tightness.
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Frequently Asked Questions
ARBOSHIELD Pro’s EPAM is the perfect solution for waterproofing, airtightness and top-tier Class A fire performance.It can provide watertight and airtight seals between a concrete structural frame and SFS sections, weatherproofing parapet walls, balcony details, and more.EPAM has a self-adhesive backing that bonds securely, even in temperatures as low as -40°C helping project timelines remain uninterrupted and ensures on-time delivery irrespective of climatic challenges.For buildings taller than 18 metres where fire performance is crucial, EPAM is the ideal choice as it exceeds current Building Regulation and Approved Document B requirements, future-proofing buildings with a premium fire and weather seal.
Some of the standout features of EPAM that make it ground-breaking in the industry:
It is a complete, innovative solution for façade and apertures that brings together a ground-breaking group of products into one cohesive range. The system combines industry-leading fire safety (with up to Class A2-s1,d0 reaction to fire) with W1-rated resistance to water penetration and airtightness.
Alongside the innovative self-adhesive EPAM® perimeter seal, the complete system includes a Class A W1 Breather Membrane, a Class A Air & Vapour Control Layer, Class A High-Tack Sealing Tapes, and a Class B W1 Breather Membrane.
The system is ideal for both new build and refurbishment projects across commercial, industrial, residential, and retail buildings. Because of its consistency and ease of installation, it is also an excellent choice for modular and off-site factory-built construction projects.
The range has been developed to answer specifiers’ requirements for the highest verifiable fire safety while providing significant time and cost savings. The system avoids the mess, waste, and labour-intensive installation times associated with traditional pasted methods.
Complete solutions for your façade challenges
The ARBOShield Pro® fire-resistant systems range offers a fully compatible suite of membranes, seals, and adhesives. Whether for new builds, refurbishments, high-rise residential developments, or modular construction – our cohesive product family provides the highest level of safety, weatherproofing, and compliance for your projects.
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Explore the ARBO® Product Family
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Find your contacts
Regardless of whether you are an architect and planner, property developer, industry specialist, distributor, applicator or specifier – if you have any questions about our products, services or specific construction projects, please feel free to contact the CARLISLE® contact person in your area with your technical questions. Our experts will be happy to advise you.
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