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Swelling tapes
Swelling tapes ensure watertight sealing of joints in concrete structures. They swell on contact with water and effectively prevent the penetration of moisture. Perfect for basements, foundations, underground garages and water-bearing structures such as sewage treatment plants or tunnels, it is also easy to install and has a long-lasting effect, which is ideal for permanently watertight structures.
MASTERTEC Mastertstop self-adhesive bentonite swelling tape
Designation | Packaging | Art. Nr. | Unit |
---|---|---|---|
Masterstop SK self-adhesive bentonite swelling tape | 20 x 5 mm (roll of 18 m) | 48066 | meter |
This bentonite swelling tape is self-adhesive. It is a technically mature and tested swelling tape based on sodium bentonite and is used to seal construction joints in reinforced concrete construction. On contact with water, it changes its solid structure and becomes a plastic mass that can penetrate the finest cracks and cavities. The bentonite swelling tape is REACH-compliant and suitable for water change zones.
MASTERTEC Masterstop bentonite swelling tape
Designation | Packaging | Art. Nr. | Unit |
---|---|---|---|
Masterstop Betonit swelling tape | 25 x 20 mm, 30 m (6 rolls of 5 m each) | 101493 | meter |
This bentonite swelling tape 25 x 20 mm (6 rolls of 5 m each) is a technically mature and tested sodium bentonite-based swelling tape. The surface is smooth and the consistency is plastic.
- Leak test up to max. 8 bar (80 m water column)
- AbP up to max. 2 bar (20 m water column) with smooth joint
- AbP up to max. 1.6 bar (16 m water column) with rough joint
Service class A for load class 1 and 2 corresponding to of the WU Directive
MASTERTEC swelling tape adhesive
Designation | Packaging | Art. Nr. | Unit |
---|---|---|---|
MASTERTEC swelling tape adhesive | cartridge 310 ml | 118193 | ML |
The cartridge adhesive is used to securely fix bentonite swelling profiles. The MASTERTEC swelling tape adhesive cartridge with a capacity of 310 ml is a high-quality acrylic sealant that has been specially developed for bonding MASTERTOP bentonite swelling tapes.
With a paste-like consistency, the adhesive enables easy and precise application to firmly fix the swelling tapes in place. The density of the adhesive is around 1.65 g/ml, which gives it high viscosity and stability. These properties help to ensure a long-term and reliable seal.
MASTERTEC MasterMastic PU swelling paste
Designation | Packaging | Art. Nr. | Unit |
---|---|---|---|
MASTERTEC swelling tape adhesive | cartridge 310 ml | 120142 | ML |
MasterMastic PU swelling paste 310 ml is a highly elastic, water-swellable 1-component PUR-based sealing compound that acts as a hydroactive setting sealant. After curing to form an elastic product, the paste swells on contact with water and thus provides a permanent seal for construction joints. It can be used both as a surface leveler on rough substrates and as a swelling tape substitute. The paste’s ability to swell on contact with water ensures that joints remain permanently sealed, underlining its versatility and reliability in a wide range of applications.
Fastening grid for swelling tapes
Designation | Packaging | Art. Nr. | Unit |
---|---|---|---|
Fastening grid for swelling tape | 1 meter | 34372 | meter |
The fastening grid for swelling tapes is used to securely fix the swelling tape and prevent it from slipping or shifting during use. The silver swelling tape grid is made of robust, galvanized steel and is 1 m long. Thanks to its sturdy material and precise construction, it ensures reliable fixation of the swelling tape, providing an optimum seal and a permanent solution for protection against water infiltration.
MAstertec nails for manual fastening

Designation | details | Item number | Unit |
---|---|---|---|
Nails for manual fastening - Swelling band accessories | Length 40 mm with washer | 010090 | 1 box / 250 pcs. |
High-quality nails with washer 40 mm from mastertec – swelling tape accessories made of galvanized steel for manually fastening swelling tapes. The nails are 40 mm long and fitted with a washer, which ensures secure fastening. Packed in a cardboard unit (1 box). Ideal for professional applications. Color: silver.