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Kerakoll Aquastop 120 Waterproofing EXTERNAL Corner - LAST FEW AVAILABLE

Kerakoll Aquastop 120 Waterproofing EXTERNAL Corner

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Price: £4.50 ex VAT.  £5.4 inc VAT

In stock

Kerakoll Aquastop 120 Waterproofing INTERNAL Corner

For use in conjunction with Kerakoll Aquastop 120 tape and, Kerakoll nanodefense ECO

Flexible NBR waterproof joint for perimeter and fractionizing joints in waterproofing systems. For use under ceramic and porcelain tiles and natural stone. Bonds directly on application.

Aquastop 120 ensures continuous waterproofing even at expansion joints.

Product Strengths

  • High elasticity and UV light resistance
  • For internal and external use 
  • Ideal 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

Areas of Use Use

For internal and external use on cement-based substrates, plasterboard and metal for wall-floor connection joints and fractionising joints.

Waterproofing of joints in:

  • external surfaces (balconies, terraces)
  • standard sanitary environments (kitchens, shower cabinets, bathrooms, saunas

Do not use To contain, or in contact with strong solvents (ketone, ester, hydrocarbons).

Instructions for use

Preparation of substrates

The substrate must be cured, clean, solid and dry. For this purpose, oil, grease, loose parts, previous paint coats, cement slurries or coverings of any type must be removed.

The method used to clean the substrate will depend on the type of surface, sandblasting being the ideal technique.

The edges of concrete joints must be smoothed with a sander to remove any sharp ribbing.


The joint is ready-to-use. Bond overlapping sections on site using elastic waterproofing product Aquastop Nanoflex® or Nanodefense® Eco.


Aquastop 120 can be applied to horizontal and vertical joints. Laying is performed by bonding the mesh edges. To bond Aquastop 120, apply the waterproofing product to the already prepared substrate with a spreader.

Lay the joint tape with the mesh side printed with the words Kerakoll facing upwards. Apply the second coat of waterproofing product to the fabric. Both the fabric edge and 5-10 mm of the tape must be covered.

Where jointing operations involve corners, edges, pipes and drains, use special connection sections (internal corner, external corner, flanges).

The different elements must be connected using the waterproof membrane, overlapping the edges by at least 20 mm.

Cleaning Tools used for bonding operations can be cleaned with water while the waterproofing product is still fresh. Once hardened, the product can only be removed mechanically.

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