Durable and flexible vapor barriers for long-term, airtight sealing in roof, wall, and ceiling constructions
- Variable humidity regulation
- With laying and bonding lines
- Tearproof and dimensionally stable
Content: 75 m² (€1.56 / 1 m²)
- Variable humidity regulation
- With laying and bonding lines
- Tearproof and dimensionally stable
Product advantages
Variable moisture regulation
Stretchable and flexible
Adaptable & robust
Laying lines
Easy alignment & time saving
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✓HIGH FUNCTIONALITY AND SAFETY - The ALMO vapor barrier is tear-resistant, dimensionally stable and meets the strict requirements of fire class B as well as the ZVDH and EnEV standards, making it ideal for new builds, conversions and renovations. Provides the best protection against structural damage and mold.
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✓OPTIMUM MOISTURE REGULATION - Thanks to the variable sd value of 0.4 to 3.2 m, our vapor barrier film adapts to seasonal conditions to effectively regulate moisture and prevent the formation of condensation.
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✓BREATHABLE - The high-quality vapor barrier is breathable and helps to create an airtight building envelope that improves the indoor climate and increases energy efficiency.
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✓UNIVERSALLY APPLICABLE & SUSTAINABLE - Our ALMO vapor retarder combines moisture-regulating properties with outstanding re-drying potential to promote sustainable, robust and healthy construction. Particularly suitable for internal and external insulation between rafters and for insulation on top of rafters with mineral insulation.
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✓EASY INSTALLATION - The vapor barrier foil is easy to install and supports fast and error-free installation thanks to the gluing and laying lines.
Technical Data
| Execution | 1.5m x 25m |
|---|---|
| Features | Fire classification B |
| Diffusion-equivalent air layer thickness (sd value) | 0,4m - 3m variable |
| Roll length | 25m |
| Width | 1,5m |
| m² per roll | 37,5 |
| Processing temperature | -5 °C to +40 °C |
| Fire classification | Class B - s2 - d0 |
| Resistance to water passage | W1 (according to DIN 1928) |
Airtight Vapor Barrier for Optimal Protection
The ALMO Vapora Vario SD vapor barrier provides a flexible and durable solution for protecting your building structure. With a variable SD value from 0.4 to 6m, it effectively regulates moisture, prevents condensation, and protects the insulation from damage. Thanks to its variable vapor permeability, it ensures controlled indoor humidity.
Our ALMO Vapora Vario SD vapor barrier offers the following advantages:
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High functionality & safety: The vapor barrier is tear-resistant, dimensionally stable, and meets fire class B requirements.
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Optimal moisture regulation: The variable SD value from 0.4 to 6m prevents condensation and adapts to seasonal conditions.
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Breathable: The vapor control membrane helps create an airtight building envelope, improves indoor climate, and increases energy efficiency.
System Structure & Application Areas
This shows how the vapor barrier integrates into the system — clearly visualized for quick and easy decision-making.
Cross-section (outside → inside)
Application Areas
Roof interior
Between-rafter and above-rafter insulation
Drywall
Partition walls, wood and metal stud framing
Interior renovation
Improves airtightness in existing roofs
Timber construction
Prefabricated elements, modular builds, extensions
System Components
Important Notes
- ✓Install along the guide lines with approx. 10 cm overlap
- ✓Seal joints and connections permanently airtight
- ✓Seal penetrations such as pipes or cables all around
Installation Guide for Vapor Barriers
How should a vapor barrier be properly installed? Our guide shows you the key steps for professional installation, ensuring your facade remains permanently protected from moisture and other weather influences.
Download installation guideWhy shop at ALMO?
Made in Germany
Tested quality with long service life. We guarantee the highest quality standards and reliability for every product.
Free delivery from €150
Free shipping on every order over €150. Fast delivery so your projects can start on time.
Custom sizes available online
Easily customize your products online to meet your requirements. The perfect solution for your project – simple and convenient.
What Our Customers Say
The product arrived after 2 days and is easy to work with. A fair price for a variable vapor barrier.
Good quality at a great price. Easy to install thanks to the printed guide lines. Very durable.
- Extreme adhesive strength
- Stretchable
- For inside and outside
Product advantages
For inside and outside
Versatile application
Tear-resistant liner
Time saving
High adhesive strength in cold & heat
High quality
EXTREME ADHESIVE STRENGTH AND FLEXIBILITY
Durable airtight and windproof sealing of vapor retarders, roof and façade membranes for interior and exterior use. Ideal for overlaps, connections and repairs.
EASY INSTALLATION
The unique tear-resistant cover liner enables effortless, fast application, especially for long overlaps and overhead work.
HIGH AGEING RESISTANCE
The high-quality acrylic adhesive ensures that the high-performance tape is securely anchored over a long service life. Moisture-resistant and durable.
FREE FROM RESIDENTIAL TOXINS
ALMO Versa is free of solvents, chlorine and formaldehyde.
Technical data
| Application | Adheres to wood materials, plasterboard materials, vapor retarders, metal, roof and façade membranes |
|---|---|
| Features | Tear-resistant liner |
| Carrier system | Grid-reinforced LDPE film |
| Adhesive | Modified dispersion acrylate |
| Coverage | Tear-resistant plastic line |
| Roll length | 40m |
| Width | 60mm |
| Temperature resistance | -40 °C to +100 °C |
| Processing temperature | -5 °C to +40 °C |
Content: 2 RL (€15.77 / 1 RL)
- Airtight installation without stapling
- Double-sided strong adhesive
- Tear-resistant liner
Product advantages
Gluing instead of stapling
Airtight installation without staple cracks
Tear-resistant liner
Time saving
Double-sided extreme adhesive strength
Quick & easy installation
THE PERFECT ALTERNATIVE TO STAPLING
Thanks to its double-sided adhesive surface, ALMO TwinTape provides a strong, airtight seal that replaces conventional stapling and ensures even, clean installation without damaging the vapor barriers or connections.
HIGH ADHESIVE STRENGTH FOR RELIABLE SEALING
Thanks to the high-performance adhesive, the double-sided adhesive tape guarantees permanent and secure fixing of vapor retarders and connections.
EASY HANDLING THANKS TO TIGHT LINER
The tear-resistant plastic liner enables uncomplicated and precise processing of the tape, even with difficult joints.
EXTREMELY RESISTANT TO AGEING
The high-performance adhesive does not dry out and remains stable for a long time without becoming brittle.
TEMPERATURE-RESISTANT AND DURABLE
The double-sided adhesive tape is designed for extreme conditions - it remains fully functional even at temperatures from -40°C to +100°C and retains its adhesive strength permanently.
Technical data
| Adhesive | Modified dispersion acrylate |
|---|---|
| Carrier system | Grid-reinforced LDPE foil |
| Coverage | Tear-resistant plastic liner |
| Roll length | 50m |
| Width | 20mm |
| Temperature resistance | -40 °C to +100 °C |
| Processing temperature | -5 °C to +40 °C |
Content: 2 RL (€15.77 / 1 RL)
ALMO Vapor Barrier – Reliable Protection for Ceiling, Wall, and Roof Structures
In wall, roof, and ceiling constructions, a vapor barrier essentially performs two important functions. Depending on its SD value, it limits the diffusion of water vapor that develops within the structure. It also prevents convection through the building component itself. To achieve this, the membrane must be installed completely airtight. These two functions ensure that the vapor barrier makes a significant contribution to moisture protection in any building. If you are looking for a high-quality vapor barrier you can fully rely on, ALMO is the right choice.
Rely on the Functional Properties of the ALMO Vapor Barrier
The ALMO vapor barrier is made of tear-resistant specialty fleece with a moisture-adaptive surface. It features adhesive guide lines for precise and secure sealing. The installation aid makes handling easier and ensures the membrane is properly installed airtight. Our vapor barrier meets fire class B requirements. The variable SD value, ranging from 0.4 to 6m, provides optimal moisture regulation. By effectively preventing condensation, it protects the insulation from potential damage and supports long-term durability. At the same time, it helps maintain balanced indoor humidity levels.
Rely on ALMO’s Service and Expertise
In the ALMO online shop, you can order your products made to measure. We offer vapor barriers in different specifications, which you can select with just a few clicks. You will receive a vapor barrier of tested quality and long service life. We place great importance on consistent, high quality to guarantee the reliability of our products.