HENSOMASTIK® K 2000 Class A Adhesive
What is this product?
Flexible fire resistant special adhesive
HENSOMASTIK K 2000 is a permanently flexible special adhesive, heat-resistant up to 750°C. It bonds fire protection boards with additional mechanical fixing, bonds and seals fire protection boards in ventilation duct construction, and is used as an installation aid for insulation materials.
Its high elasticity makes it suitable for joining materials with very different thermal expansion, such as fixing insulation between the outer and inner walls in railway carriage construction.
Where it is used
- Non-combustible adhesive joints
- Bonding fire protection boards to concrete or aerated concrete, with additional mechanical fixing
- Bonding and sealing fire protection boards in ventilation duct construction
- Joining materials with different expansion behaviour, for example in railway carriage construction
- Installation aid for insulation materials
Product characteristics
- Heat-resistant up to 750°C
- Meets R1 HL3 requirements according to EN 45545-2:2016
- Permanently elastic, does not become brittle
- Solvent-free, organic
- Colourless
Technical data
- Application rate: 0.1 to 1.5 kg/m² (100 to 1,500 g/m²), depending on surface and purpose
- Workability time: 15 minutes at 20°C and 65% relative humidity
- Flash-off before joining: 8 to 20 minutes, depending on application rate
- Drying time: approx. 24 hours at approx. 20°C and 60% relative humidity
- Apply with a notched trowel, short pile roller or brush, or directly from the pail or cartridge
- Ambient temperature above +5°C during application and drying
- Supplied in 350 g cartridges and 20 kg plastic pails
Documents
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Heat-resistant up to 750°C
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Permanently flexible, does not become brittle
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Meets R1 HL3 to EN 45545-2:2016
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Solvent-free
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Joins materials with different thermal expansion
Specifications & Documents
Full technical data and downloadable certification for compliance records.
| Finish | Colourless |
| Application Method | Notched trowel, short pile roller, brush, or directly from the pail or cartridge |
| Fire Classification | Meets R1 HL3 according to EN 45545-2:2016 |
| VOC Content | Solvent-free |
| Shelf Life | 12 months unopened |
How to Apply
Simple application with standard tools — no specialist equipment required.
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1Prepare surfaces for HENSOMASTIK K 2000Surfaces must be free of contamination. Ambient temperature above +5°C, substrate at least 3°C above dew point and above 0°C.
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2Apply HENSOMASTIK K 2000Stir thoroughly. Apply with a notched trowel, short pile roller or brush, or directly from the pail or cartridge, at 100 to 1,500 g/m². When bonding materials of different densities, apply to the denser material.
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3Join with HENSOMASTIK K 2000Allow 8 to 20 minutes flash-off depending on the amount applied, especially overhead or vertical, then join and press firmly. Workability time is 15 minutes at 20°C.
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4Clean up after HENSOMASTIK K 2000If work stops for more than 20 minutes, clean tools immediately with water.
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5Allow HENSOMASTIK K 2000 to dryApprox. 24 hours at approx. 20°C and 60% relative humidity.
Coverage Guide
Frequently Asked Questions
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HENSOMASTIK K 2000 bonds fire protection boards with additional mechanical fixing, bonds and seals fire protection boards in ventilation duct construction, and is used as an installation aid for insulation materials.
It is heat-resistant up to 750°C.
It meets R1 HL3 requirements according to EN 45545-2:2016.
Yes. It is permanently elastic and does not become brittle, so it suits joining materials with very different thermal expansion.
0.1 to 1.5 kg/m² (100 to 1,500 g/m²), depending on the surface and purpose.
15 minutes at 20°C and 65% relative humidity. Allow 8 to 20 minutes flash-off before joining, then press firmly.
Approx. 24 hours at approx. 20°C and 60% relative humidity, depending on temperature, humidity and surface structure.
350 g cartridges and 20 kg plastic pails.
What Our Customers Say
Verified reviews collected via eKomi — independently moderated and genuine.
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★★★★★
Gave them a ring to ask for some advice, was pointed to exactly what I needed and how much. Arrived promptly and has performed perfectly.
Verified purchase · 2 weeks ago -
★★★★★
Very quick response to query and fast delivery. Easy to use product with good instructions. Great company. Will use again.
Verified purchase · 1 month ago -
★★★★★
Excellent product with swift delivery. Easy to top up fire retardancy after the deck was cleaned. Looks completely untreated which was exactly what we wanted.
Verified purchase · 1 month ago
