EXPA
IZOTEX® EXPA is a pre-compressed, self-expanding PU joint sealing tape for window, door and construction joints. The tape is resistant to driving rain, windtight, vapour-permeable and UV-resistant. After installation the impregnated PU foam expands independently, reliably fills irregular joints and supports moisture release from the joint to the outside.
- Exposure group BG1
- Driving-rain resistant up to 600 Pa
- Windtight and vapour-permeable
- Pre-compressed and self-expanding
- Reliably fills irregular joints
Technical information
All technical values and test results according to European standards. Custom sizes are produced on request.
| Product Name | IZOTEX® EXPA / Expanding Joint Sealing Tape |
| Composition | Polymer-impregnated polyurethane foam |
| Reaction to Fire | B1 |
| Driving-Rain Resistance | ≥ 600 Pa |
| Air Permeability | < 0.1 m³/(h·m·daPaⁿ) |
| Application Temperature | +10 °C / +50 °C |
| Storage | Can be stored for 12 months at +15 °C to +25 °C in a dry environment, away from direct sunlight. |
| Product | Suitable joint width | Free expansion | Roll length |
|---|---|---|---|
| EXPA 10 | 3–5 mm | 10 mm | 10 m |
| EXPA 25 | 6–12 mm | 25 mm | 5.6 m |
What we offer
Technical precision and easy application – for lasting, reliable sealing.
Pre-Compressed
Space-saving, pre-compressed and easy to install.
Self-Expanding
Expands after installation and fills the joint.
Driving-Rain Resistant ≥ 600 Pa
Tested resistance to driving rain from 600 Pa.
Windtight
Supports reliable sealing of the connection joint.
For Irregular Joints
Reliably adapts to uneven and irregular joint widths.
Flame-Retardant
Flame-retardant – class B1.
Easy & Clean Installation
Pre-compressed on the roll for fast, clean installation without mess.
Two Variants
Available as EXPA 10 and EXPA 25.
Frequently asked questions
Everything you need to know about IZOTEX EXPA – quickly and clearly.