Roof underlays for windproof and rainproof roof constructions
- Driving rain proof
- Open to diffusion
- Integrated self-adhesive seam
Content: 75 m² (€1.19 / 1 m²)
- Driving rain proof
- Open to diffusion
- Integrated self-adhesive seam
Content: 75 m² (€1.56 / 1 m²)
- Grid reinforced
- Open to diffusion
- Integrated self-adhesive seam
Content: 75 m² (€2.00 / 1 m²)
ProLine 220G: Robust, vapor-permeable roof underlay
The ALMO ProLine 220G roof underlay is a high-quality, vapor-permeable underlay membrane for demanding roof constructions. With its four-layer, mesh-reinforced structure and particularly high surface weight, it combines extreme tear resistance with high vapor permeability. Thanks to its UV resistance, protection against driving rain, and suitability as temporary roof covering for up to 4 weeks, it is the ideal choice for pitched roofs.
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ZVDH-approved and 10-year warranty for maximum reliability and safety.
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Four-layer, mesh-reinforced structure: Provides extreme tear resistance and long service life.
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Vapor-permeable (sd-value 0.02 m): Ensures optimal moisture regulation and prevents mold growth.
Which roof underlay is right for my project?
Our comparison table helps you find the right underlay membrane for your construction project
| Roof underlay (roof) | ✔ | ✔ | ✔ | ✔ |
| Façade membrane (wall) | ✔ | ✔ | – | – |
| Surface weight | 130 g/m² | 150 g/m² | 220 g/m² | 240 g/m² |
| Self-adhesive seam | ✔ | ✔ | ✔ | ✔ |
| Roll length | 25 m / 50 m | 25 m / 50 m | 25 m / 50 m | 40 m |
| UV resistance | 1 month | 3 months | 3 months | 3 months |
| Heat resistance | up to +80 °C | up to +80 °C | up to +80 °C | up to +100 °C |
| Outdoor exposure | 4 weeks | 4 weeks | 4 weeks | 12 weeks |
| Closed façades | ✔ | ✔ | – | – |
| For PV systems | – | – | – | ✔ |
| Special features | Vapor-permeable | Vapor-permeable | Walkable Extremely robust |
Weldable |
Installation guide for roof underlays
How should a roof underlay be installed correctly? Our guide shows you the key steps for professional installation, ensuring that your roof is permanently protected against moisture and 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
Orders are always processed quickly and correctly… I’m slowly becoming a regular customer.
Great service and very good quality. If there are any issues or questions, the company responds immediately to help. Highly recommended!
Suitable adhesive tapes
- Extremely UV-resistant
- Tear-resistant liner
- Open to diffusion
Product advantages
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UV-resistant
Long-term protection
Tear-resistant liner
Time saving
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Open to diffusion
Breathable
Volcano® UV Facade adhesive tape
The UV-stable, single-sided adhesive tape is ideal for sealing visible façade membranes outdoors. It is ideal for bonding overlaps and connections.
UV-RESISTANT AND OPEN TO DIFFUSION
The ALMO façade adhesive tape is specially UV-stabilized to guarantee a long-lasting effect. It is open to diffusion with an sd value of less than 2m to effectively prevent condensation from building up.
STRONG HOLD AT EXTREME TEMPERATURES
Developed for high adhesive strength both at low temperatures down to -40°C and in heat up to +80°C. Perfect for reliable sealing all year round.
DURABLE PROTECTIVE COATING
ALMO façade adhesive tape contributes to a durable and protective seal. It is waterproof and therefore protects against driving rain and other weather influences. Ideal for windproof sealing of long overlaps.
STRESS-FREE PROCESSING
With a roll length of 25m and a width of 60mm, our façade adhesive tape is ideal for long-lasting overlaps, guaranteed by a tear-resistant plastic liner for stress-free work on the construction site.
Technical Data
| Features | Open to diffusion, tear-resistant liner |
|---|---|
| Carrier system | Polypropylene fleece |
| Adhesive | Modified dispersion acrylate |
| Coverage | Tear-resistant plastic liner |
| Diffusion-equivalent air layer thickness (sd value) | 2m |
| UV resistance | 12 months |
| Roll length | 25m |
| Width | 60mm |
| Temperature resistance | -40 °C to +80 °C |
| Processing temperature | -5 °C to +40 °C |
Content: 2 RL (€19.02 / 1 RL)
- 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)
- Extreme adhesive strength
- Extremely UV-stable
- Flexible and stretchable
Product advantages
UV-resistant
Long-term protection
Tear-resistant liner
Time saving
High adhesive strength in cold & heat
High quality
EXTREMELY UV-STABLE AND WATERPROOF
Our ALMO adhesive tape is specially UV-stabilized to provide long-lasting protection and remains completely waterproof even under extreme weather conditions.
STRETCHABLE AND STRONG ADHESION
Developed to adhere strongly even at temperatures from -40°C to +100°C. The high elongation and flexibility enable a windtight seal outdoors, ideal for all climatic conditions.
QUICK AND EASY INSTALLATION
Thanks to the unique, tear-resistant cover liner, the tape is easy to work with, perfect for demanding overlaps and overhead work.
HIGH PERFORMANCE WITH A LONG SERVICE LIFE
The high-quality acrylic adhesive guarantees permanent anchoring and resistance to ageing, ensuring reliable use for years to come. The adhesive tape is also moisture-resistant.
MADE IN GERMANY – QUALITY GUARANTEE
Manufactured to the strictest German quality standards, our ALMO Versa Black UV adhesive tape comes with a 10-year guarantee that promises the highest quality and reliability.
Technical Data
| Application | Adheres to wood materials, plasterboard materials, metal, roof and façade membranes |
|---|---|
| Features | Tear-resistant liner |
| Carrier system | Grid-reinforced LDPE film |
| Adhesive | Modified dispersion acrylate |
| Coverage | Tear-resistant plastic liner |
| Roll length | 40m |
| Width | 60mm |
| Temperature resistance | -40 °C to +100 °C |
| Processing temperature | -5 °C to +40 °C |
Content: 2 RL (€20.59 / 1 RL)
More safety for your roof – ALMO roof underlay with technical highlights
To protect the roof as well as the underlying structure and insulation from various weather conditions, a roof underlay is essential. It withstands driving rain and hail as well as wind and condensation. To cope with these high stresses in the long term, innovative materials and functional properties are required. Rely on the ProLine 220G roof underlay from ALMO. We offer a high-quality roofing membrane that simplifies installation with its integrated laying aid and self-adhesive seam. This allows windproof and rainproof overlaps to be easily achieved during installation on the roof.
Optimal protection for your roof with our roof underlay
Our roof underlay is equipped with innovative features to ensure maximum functionality. To guarantee optimal moisture regulation on the roof, it is vapor-permeable. This prevents potential mold growth. The roof underlay is made of nail-sealed material, providing reliable protection against water ingress and significantly increasing the service life of the roof.
Everything from a single source
If you want to buy a roof underlay, you can rely on us. In our online shop you will not only find our underlay membrane but also the necessary accessories for installation. Both the membrane and the accessories are offered at an attractive price-performance ratio. We also ensure fast shipping, so you will quickly receive your order. You can also order your roof underlay cut to size, and delivery within the EU is free of charge.
