UNIVERSAL HIGH-ADHESION SELF-ADHESIVE TAPE FLEXI BAND
The sealant tape for membranes, CLT joints and airtightness
FLEXI BAND is a single-sided self-adhesive tape for sealing breathable membranes, vapour control layers, CLT joints and any linear joint requiring durable airtightness. Its composition — PE film, a double layer of solvent-free acrylic adhesive and polyester mesh reinforcement — ensures adhesion to timber, OSB, concrete, steel and masonry. As a sealant tape, it also performs on dusty, porous or damp surfaces and can be applied at temperatures down to -18 °C.
Certified by the Passive House Institute for airtightness
Technical data for FLEXI BAND sealant tape: adhesion, durability and fire resistance
FLEXI BAND is a PE film sealant tape with polyester reinforcement, 0.32 mm thick and solvent-free. After 6 months of exposure in Florida — high temperatures, high humidity and intense UV radiation — its tensile strength and adhesive strength remained unchanged.
Key technical specifications:
— Adhesion strength on OSB at 90°: 6.5 N/10 mm · at 180°: 12 N/10 mm (EN 29862)
— Tensile strength: ≥ 50 N/25 mm (EN ISO 29864)
— Water vapour permeability Sd: approx. 45 m (EN 1931)
— Fire resistance on 100 mm CLT joint with FIRE STRIPE GRAPHITE: EI 90 (EN 1363-4)
— Application temperature: -18/+40 °C · Temperature resistance: -40/+80 °C
— EMICODE EC1 Plus · French VOC A+ (ISO 16000)
Self-adhesive tape for membranes and airtightness: how is it applied?
FLEXI BAND is applied to dry, grease-free surfaces. No primer is required on timber or OSB; on masonry or concrete, PRIMER SPRAY is recommended. The liner is pre-cut to make installation easier on corners and flush surfaces. After application, roll the tape to ensure full contact with the substrate.
Sealant tape for CLT joints: what fire resistance does it provide?
When used in combination with FIRE STRIPE GRAPHITE, FLEXI BAND on a simple CLT joint with a 5 mm gap exceeds 106 minutes for both integrity and insulation. On a joint with a 2 mm gap, both integrity and insulation exceed 100 minutes (EN 1363-4, CSI laboratory). Details of the tested configurations are available in the fire test report.
Sealant tape for dusty, damp and low-temperature surfaces: why does it work?
FLEXI BAND's acrylic compound is engineered to maintain initial tack and adhesion strength on less-than-ideal surfaces. In the company's internal test campaign on the acrylic sealant tapes in the range, FLEXI BAND achieved the highest values on OSB at both 90° and 180°. The polyester mesh reinforcement maintains a tensile strength of ≥ 50 N/25 mm even after prolonged exposure to weathering.
Documents
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Technical data sheets
- Technical data sheets Croatian
- Technical data sheets Czech
- Technical data sheets English
- Technical data sheets French
- Technical data sheets German
- Technical data sheets Greek
- Technical data sheets Hungarian
- Technical data sheets Italian
- Technical data sheets Polish
- Technical data sheets Portuguese
- Technical data sheets Romanian
- Technical data sheets Russian
- Technical data sheets Slovenian
- Technical data sheets Spanish
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Passive House Certificate
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File BIM.rfa
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Fire test report
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EMICODE Certificate
FLEXI BAND
| CODE | liner | B
[mm]
|
L
[m]
|
liner
[in]
|
B
[in]
|
L
[ft]
|
pcs. |
|---|---|---|---|---|---|---|---|
| FLEXI60 | 60 | 60 | 25 | 2.4 | 2.4 | 82 | 10 |
| FLEXI100 | 100 | 100 | 25 | 3.9 | 3.9 | 82 | 6 |
| FLEXI5050 | 50/50 | 100 | 25 | 2/2 | 3.9 | 82 | 6 |
| FLEXI7575 | 75/75 | 150 | 25 | 3/3 | 5.9 | 82 | 4 |
Technical Data
| Property | Standard | Tested Values | USC Conversion |
|---|---|---|---|
| Thickness | EN 1942 | 0,32 mm | 13 mil |
| Tensile strength | EN 14410 | ≥ 50 N/25mm | ≥ 11.42 lbf/in |
| Water vapour transmission (Sd) | EN 1931 / EN ISO 12572 | ca. 45 m | ca. 0.078 US perm |
| Water vapour transmission (dry cup) | ASTM E96/ E96M | 0.11 US perm | - |
| Water vapour transmission (dry cup) | ASTM E96/ E96M | 6.27 ng/(s·m²·Pa) | - |
| Exposure to weather | - | > 6 month | - |
| Emicode | procedura di prova GEV | EC1 plus | - |
| Resistance to temperature | - | 40 / 80 °C | 104 / 176 °F |
| Application temperature | - | -18 / 40 °C | 0 / 104 °F |
| Storage temperature | - | 5 / 25 °C | 41 / 77 °F |
| Adhesion strength on steel at 90° | EN ISO 29862 | ≥ 30 N/25mm | ≥ 6.85 lbf/in |
| Adhesion strength on OSB at 180° after 10 minutes | EN ISO 29862 | 12 N/10mm | 6.9 lbf/in |
| Adhesion strength on OSB at 90° after 10 minutes | EN ISO 29862 | 6,5 N/10mm | 3.7 lbf/in |
| Adhesion strength (average) on membrane in PP after 24 hours | EN 12316-2 | 30 N/50mm | 3.4 lbf/in |
| Shear adhesion strength of the joint on membrane in PP after 24 hours (1 ) | EN 12317-2 | 70 N/50mm | 8 lbf/in |
| Solvents | - | no | - |
| VOC emissions | EN 16516 | very low | - |
| French VOC classification | ISO 16000 | A+ | - |
| Resistance to water penetration at 300Pa on wall | ASTM E331 | - | - |
| Fire resistance rating on CLT joint* (2 ) | en 1366-4 | EI90 | - |
Composition
| SUPPORT | PE film |
|---|---|
| GLUE | acrylic dispersion without solvents |
| REINFORCING LAYER | polyester reinforcing grid |
| GLUE | acrylic dispersion without solvents |
| RELEASE LINER | silicone coated paper |
Product specifications
FLEXI BAND
Supply and installation of universal single-sided high-adhesion tape, Type FLEXI BAND.
Composition
From top layer to bottom layer:
PE film;
acrylic dispersion without solvents;
reinforcing polyester grid;
acrylic dispersion without solvents;
silicone coated paper.
Properties
Thickness [mm]: 0,32
Adhesion strength on OSB at 90° after 10 minutes [N/10 mm]: 6,5
Adhesion strength on OSB at 180° after 10 minutes [N/10 mm]: 12
Adhesion strength (average) on membrane in PP after 24 hours [N/50 mm]: 30
Shear adhesion strength of the joint on membrane in PP after 24 hours [N/50 mm]: 70
Tensile strength [N/25 mm]: ≥ 50
Water vapour transmission (Sd) [m] approx. 45
Exposure to weather: > 6 months
Application temperature [°C]: -18/+40
Resistance to temperature [C°]: -40/+80
Storage temperature [C°]: +5/+25
French VOC classification: A+
VOC emissions: very low
Solvents: no
Description
The application surface must be dry, free of dust and grease, and not be anti-adhesive. Surface elements must be removed so that the membrane is not damaged during application.
Recommended use: Suitable for application on various smooth building substrates, such as timber or OSB panels, without the need for additional surface treatment. If the tape is applied to brick or concrete surfaces, the use of a primer such as PRIMER SPRAY is recommended.
The complete list of approved application surfaces can be found in the specific instructions provided by the manufacturer.
The tape ensures excellent initial tack and superior adhesion strength even on dusty, porous or damp surfaces.
Installation: If applicable, the protective release film may be partially removed from the adhesive side to facilitate installation on both sharp-edged and flat surfaces. The sealing is completed by removing the remaining film and adhering the tape to the support.
Once tape installation is complete, a pressure roller must be used to ensure perfect adhesion.