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A flexible nitrile butadiene rubber (NBR) waterproof joint tape for perimeter and fractionizing joints in waterproofing systems. It bonds directly on application and ensures continuous waterproofing even at expansion joints.

Features and benefits:

  • High elasticity and UV light resistance.
  • For internal and external use.
  • Suitable for bonding with eco-friendly Aquastop Nanoflex® and Nanodefense® Eco membranes.
  • Guaranteed waterproofing of all types of non-structural fractionizing and connection joints.
  • Alkali-resistant.


  • For use under ceramic and porcelain tiles and natural stone on cement-based substrates, plasterboard, metal for wall-floor connection joints and fractionizing joints.
  • External surfaces (balconies and terraces).
  • Standard sanitary environments (kitchens, shower cabinets, bathrooms, saunas).

Consult manufacturer for recommended substrate preparation.

Standard product features




0.6 mm.

Roll size:

  • Width: 120 mm (20 mm mesh/ 80 mm nitrile butadiene rubber (NBR)/ 20 mm mesh).
  • Length: 50 m.


≈60 g/m.

Technical properties (23°C, 50% R.H):

  • Ultimate elongation: Longitudinal: ≈25%; transversal: ≈230%.
  • Resistance to the pressure of water: ≤3 bar.
  • Maximum tensile strength: Longitudinal: >4.11 N/mm²; transversal: >9.4 N/mm².
  • Vapour permeability: 8400 μ.
  • Tensile strength (after 28 days, with Aquastop Nanoflex®, to BS EN 1348): Joint substrate: >1 N/mm²; joint on joint: >1 N/mm².

NBS Specification

NBS Create logo
This product is associated with the following NBS Create clause:
45-75-90/330 Butyl rubber adhesive tape

NBS Specification

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This product is associated with the following NBS clauses:

Product specification

An important note about specifying



Kerakoll UK Ltd


+44 (0)1527 578000

Product reference

Aquastop 120

Manufacturer details

Unit 4,
The Croft,
Buntsford Gate Business Park,
Worcestershire, B60 4JE
Tel +44 (0)1527 578000
Fax +44 (0)1527 578170
NBS Plus
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