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What are PIB Corners with Butyl?
PIB Corners with Butyl are prefabricated internal and external corners with a two-layer construction: a UV- and weather-resistant PIB top layer combined with a self-adhesive butyl backing.
They are used in vapour barriers, radon barriers, underlays and wind barriers where difficult corners need to be sealed with a flexible, formable membrane solution. The butyl backing adheres to many common building materials, making the corners suitable for details where a self-adhesive solution is an advantage.
The corner type, dimensions, substrate and installation method must always be selected according to the specific system build-up and project requirements.
Product highlights
Areas of application
PIB Corners with Butyl are used for details requiring a flexible, self-adhesive corner solution with water- and vapour-tight properties.
The product is particularly suited to difficult corners, transitions and connections in vapour barriers, radon barriers, underlays and wind barriers.
Typical applications include:
- Internal corners
- External corners
- Vapour barrier details
- Radon barrier details
- Underlay details
- Wind barrier details
- Difficult corners, transitions and connections
The substrate, corner type, dimensions and installation method must always be assessed according to the specific system build-up and project requirements.
| Product type | Prefabricated PIB corners with self-adhesive butyl backing |
|---|---|
| Application | Vapour barriers, radon barriers, underlays, wind barriers and difficult corner details |
| Variants | Standard variant with butyl and reinforced variant with butyl and aluminium mesh |
| Corner types | Internal and external corners |
| Construction | UV- and weather-resistant PIB top layer with self-adhesive butyl-based backing |
| Jointing | Self-adhesive and self-vulcanising, typically with a minimum overlap of 20 mm |
| Accessories | SabetoFLEX Recycled Primer may be relevant on difficult or porous substrates. SabetoFLEX Activator Spray may be relevant when adjustment is required on smooth surfaces. |
| Environmental profile | PFAS-free and 100% recyclable |
The table shows shared key data for the product family. Consult the individual technical data sheets for variant-specific information on dimensions, thickness, weight, colours, UV stability and installation conditions.
How to use the product
PIB Corners with Butyl are used as prefabricated detailing components in systems incorporating vapour barriers, radon barriers, underlays or wind barriers.
Select either an internal or external corner according to the detail. Position the self-adhesive butyl backing against a suitable substrate so the corner becomes part of the complete seal around transitions, terminations and difficult corner areas.
The substrate, dimensions, overlap, temperature and detailing method must always be assessed according to the specific application and project requirements.
Application notes
PIB Corners with Butyl must be installed on suitable, clean and dry surfaces.
The corners are self-vulcanising, and joints should be formed with a minimum overlap of 20 mm. Where the corner transitions to other products, use a suitable installation adhesive according to the selected system build-up.
SabetoFLEX Activator Spray may be used when adjustment is required on smooth surfaces, allowing the product to be positioned correctly before final bonding. Installation conditions, substrate and temperature must always be assessed before use.
Always consult the technical data sheet before installation.
Related system products
SabetoFLEX Accelerator Glue is used within the EasyFLEX system for overlaps, PIB details and applications where secure adhesion and sealing are particularly important.
Activator spray for adjusting and installing SabetoFLEX membranes, corners and detailing products.
Prefabricated PIB corners without butyl backing for PIB details, corners and difficult connections.
PIB roofing membrane supplied in rolls for flat and low-pitched roofs with flame-free installation.
Sprayable contact adhesive for installing membranes, vapour barriers and reinforcement mesh in EasyFLEX roof build-ups.
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 PIB Corners with Butyl. Technical data sheets, fire-test documentation and material ageing data are collected here, so you can quickly access the file you need.
Technical data sheet
PIB Corners with Butyl – Technical Data Sheet
Product data, construction, applications, dimensions, installation conditions, jointing, vapour tightness, UV stability and environmental product information.
Open technical data sheet →
PIB Corners with Butyl and Aluminium Mesh – Technical Data Sheet
Product data, construction, applications, dimensions, installation conditions, jointing, vapour tightness, UV stability and environmental product information for the reinforced variant.
Open technical data sheet →
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.