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What are EasyFLEX PIB Roofing Membrane Rolls?
EasyFLEX PIB Roofing Membrane Rolls are flexible, flame-free roofing membranes based on polyisobutylene, or PIB. They are designed for professional flat and low-pitched roof projects where a durable, vapour-tight and flexible membrane system is required without the use of open flame.
PIB is central to the EasyFLEX approach to roofing and flashing. The membrane is PFAS-free and developed without substances that can leach into rainwater or the surrounding environment. This makes it suitable for projects where material selection, water quality and long service life are important considerations.
Installation is carried out without a gas torch or other hot works. Overlaps are sealed with SabetoFLEX Accelerator Glue, and the membrane forms part of the EasyFLEX system together with adhesives, corners and accessories. This supports a fast and controlled installation process, particularly around details, connections and penetrations.
Membrane width, system build-up, adhesive, fixing method and accessories must always be selected according to the roof substrate, slope, loading, details and project requirements.
Key product points
Areas of application
EasyFLEX PIB Roofing Membrane Rolls are designed for professional roofing projects requiring a flexible, vapour-tight and flame-free membrane solution supplied in rolls.
The system is especially relevant for flat and low-pitched roofs, renovation projects and applications where torch-free installation, PFAS-free material selection and long service life are important considerations.
Typical applications include:
- Flat and low-pitched roofs
- Renovation of existing roof surfaces
- New roof build-ups on suitable substrates
- Roofs with multiple details, penetrations or connections
- Underlays, roof details and flashings within the EasyFLEX system
- Projects where installation without hot works is an advantage
- Projects where roof-water quality, material selection and the risk of substance leaching are important considerations
The substrate, roof build-up, fixing method, membrane width, adhesive and accessories must always be assessed according to the specific application and project requirements.
| Product type | PIB-based roofing membrane supplied in rolls |
|---|---|
| Material | UV-resistant polyisobutylene, PIB |
| Application | Flat and low-pitched roofs, renovation, underlays, flashings and roof details |
| Thickness | 1.3 mm ± 0.18 mm |
| Standard widths | 140 mm, 280 mm, 560 mm and 1,120 mm |
| Temperature resistance | −60 °C to +80 °C when installed without tension |
| Water vapour resistance | μ top layer according to DS/EN 1931: 260,000 μ |
| Fire performance | DS/EN 13501-1 BROOF(t1) and BROOF(t2) |
| Environmental profile | PFAS-free, developed without leaching of harmful substances into roof water, and 100% recyclable |
The table shows selected key data. Consult the technical data sheet for full product specifications, installation conditions, storage requirements and documentation.
How to use the product
EasyFLEX PIB Roofing Membrane Rolls are installed as part of a complete roof build-up in which the vapour barrier, insulation, adhesive, optional reinforcement mesh and UV-resistant PIB roofing membrane are selected to suit the project requirements.
Installation notes
EasyFLEX PIB Roofing Membrane Rolls are installed without a gas torch or open flame.
EasyFLEX Adhesive Spray is typically used to install PIB membranes and any reinforcement mesh included in the build-up. Overlaps between PIB roofing membrane rolls are sealed with SabetoFLEX Accelerator Glue.
Products with a butyl backing and specialist detailing components may require different surface preparation or activation depending on the product, substrate and selected system build-up.
The installation method, adhesive selection, insulation build-up, fixing and detailing must always be adapted to the specific roof and documentation requirements.
A typical roof build-up includes:
- Substrate or existing roof surface
- Insulation build-up according to the project requirements
- EasyFLEX PIB vapour barrier installed with EasyFLEX Adhesive Spray
- Additional insulation or substrate layer according to the selected roof system
- Optional EasyFLEX reinforcement mesh installed with EasyFLEX Adhesive Spray for additional stability
- UV-resistant EasyFLEX PIB roofing membrane installed with EasyFLEX Adhesive Spray
- Overlaps between PIB roofing membrane rolls sealed with SabetoFLEX Accelerator Glue
Related system products
EasyFLEX PIB Roofing Membrane Rolls form part of a complete EasyFLEX roof system together with the adhesives, reinforcement and prefabricated details required for secure installation and reliable sealing.
Sprayable contact adhesive for installing PIB roofing membranes, PIB vapour barriers and EasyFLEX reinforcement mesh.
PIB-based glue for sealing overlaps between PIB roofing membrane rolls and relevant PIB details.
Reinforcing fibreglass mesh for roof build-ups where additional stability or support is required.
Prefabricated PIB corners for details, corners, terminations and difficult connections.
Need advice or have a question about the right solution? Contact EasyFLEX Roofing, and we'll help you move the project forward.
Documentation
Find the relevant documentation for EasyFLEX PIB Roofing Membrane Rolls. Technical data sheets, fire tests and material documentation are collected here, so you can quickly access the file you need.
Technical data sheet
EasyFLEX PIB Roofing Membrane Rolls – Technical Data Sheet
Product data, applications, dimensions, temperature resistance, vapour tightness, UV stability, fire classification and environmental product information.
Fire testing and classification
Fire test – CEN/TS 1187, test method 1
Test documentation for external fire exposure of the EasyFLEX/SabetoFLEX PIB roof build-up in accordance with CEN/TS 1187, test method 1.
Fire test – CEN/TS 1187, test method 2
Test documentation for external fire exposure of the EasyFLEX/SabetoFLEX PIB roof build-up in accordance with CEN/TS 1187, test method 2.
Ageing, UV and material documentation
Extended ageing – 18,000 hours
Documentation of extended ageing tests for the PIB material, including long-term exposure and evaluation of material properties following accelerated UV ageing.