Soudal Vapourseal
£7.82 inc. VAT
£6.52 ex. VAT
- Product ID: 122391
- Suitable For: Internal
- Application Method: Sealant gun
- Container Type: Tube
- Type: Sealant
- Colour: Blue
- Brand: Soudal
- Manufactuer: Soudal
Features & Benefits
Air- and Vapor-Tight
Prevents unwanted airflow and moisture transfer, supporting energy-efficient and airtight construction.Excellent Adhesion
Bonds strongly to all common vapor barrier membranes (e.g., PE, PA, PP, aluminum, EPDM, PVC) and construction materials like brick, plaster, wood, and concrete.Permanently Flexible
Remains elastic over time, absorbing structural movement without cracking or losing seal integrity.Safe and Clean Application
Free from solvents, isocyanates, and plasticizers—making it safer for indoor use and better for the environment.UV-Resistant and Durable
Offers long-term performance even in areas exposed to light and variable indoor conditions.Applies on Slightly Moist Surfaces
Ideal for real-world job sites where perfect dryness can’t always be guaranteed.
Data Sheets
Vapourseal is a ready-to-use, plasto-elastic, one-component sealant and adhesive based on acrylic dispersion. Specially designed for creating air- and vapor-tight indoor connections, it ensures reliable bonding of all types of vapor barrier membranes to various building surfaces. Its high flexibility, strong adhesion (even on slightly moist surfaces), and compliance with airtight construction standards make it a trusted choice for energy-efficient and sustainable building solutions.
Key Features:
Air- and Vapor-Tight: Provides long-lasting, sealed connections in line with EN13829, DIN4108-7, and NBN standards.
Strong Adhesion: Bonds securely to all types of vapor foils and a wide range of construction materials.
Flexible and Durable: Maintains elasticity to accommodate structural movement without cracking.
Safe and Eco-Friendly: Free from solvents, isocyanates, and plasticizers, with excellent UV resistance.
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For more information, please visit the Soudal website.
Sealing Vapor Barrier Membranes – Creates airtight and vapor-tight connections between membranes and building surfaces.
Connecting Structural Components – Ensures air-sealed joints between walls, floors, ceilings, and other structural elements.
Air Leakage Prevention – Helps meet airtight construction standards by sealing gaps that could lead to energy loss.
Indoor Insulation Projects – Enhances the performance of thermal insulation by maintaining a sealed building envelope.
Application on Moist Substrates – Ideal for use on slightly damp surfaces such as plaster, concrete, or brick, where typical sealants may fail.
✅ Applications
Sealing Vapor Barrier Membranes
For airtight and vapor-tight bonding of all types of vapor foils to various construction surfaces.Airtight Construction Joints
Ideal for connecting adjacent structural parts—walls, ceilings, floors—ensuring airtight seals as required by EN13829, DIN4108-7, and NBN standards.Energy-Efficient Building Projects
Helps meet passive house and low-energy building standards by minimizing air leakage.Interior Insulation Systems
Supports effective insulation by maintaining an uninterrupted vapor barrier layer across the structure.Application on Various Substrates
Suitable for materials like plaster, concrete, wood, fiber cement, brick, insulation, and more.
⚠️ Limitations
Indoor Use Only
Not intended for exterior applications or long-term exposure to direct weather conditions.Not for EPDM Membranes (without testing)
Although good adhesion is possible, a preliminary adhesion test is strongly recommended.Limited Movement Absorption
While flexible, it should not be used for joints requiring high dynamic movement or expansion.Temperature-Sensitive Storage
Must be stored between +5°C and +25°C and protected from frost to maintain performance.Surface Preparation Still Important
Although it can be applied to slightly moist surfaces, substrates must still be clean, dust- and grease-free for optimal adhesion.
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| Elementlength | |||||||
| up to 1,5 m | up to 2,5 m | up to 3,5 m | up to 4,5 m | up to 2,5 m | up to 3,5 m | up to 4,5 m | |
| Type of window frame material |
Minimum witdth of joints for a butled mounting b in mm | Minimum witdth of joints for a inner mounting b in mm | |||||
| Hard PVC (white) | 10 | 15 | 20 | 25 | 10 | 10 | 15 |
| Hard PVC and PMMA (dark) (colour extruded) | 15 | 20 | 25 | 30 | 10 | 15 | 20 |
| Hard PUR integral foam | 10 | 10 | 15 | 20 | 10 | 10 | 15 |
| Wood-aluminium-window | 10 | 10 | 15 | 20 | 10 | 10 | 15 |
| Aluminium-plastic sandwich frame (bright) | 10 | 10 | 15 | 20 | 10 | 10 | 15 |
| Aluminium-plastic sandwich frame (dark) | 10 | 15 | 20 | 25 | 10 | 10 | 15 |
| Wooden window frame | 10 | 10 | 10 | 10 | 10 | 10 | 10 |
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