KÖSTER KB-Flex 200 - 530ml

In stock
£41.60 Ex VAT
£49.92 Inc VAT

Koster KB-Flex 200 is a permanent plastic waterproof sealing compound against pressurised water.

Koster KB-Flex 200

Koster KB-Flex 200 is a permanent plastic sealing compound for pipes and cable penetrations. KB-Flex 200 does not dry out and remains permanently mouldable, perfect for custom detail waterproofing solutions against moisture and pressurised water.

Uses of Koster KB Flex 200

  • Sealing inside pipes and cable penetrations
  • Sealing voids between structures and pipe penetrations

How KB-Flex works:

Before use, warm the Koster KB Flex 200 by placing it in warm water max 40 °C for approx 15 minutes. This allows the material to have the ideal consistency for application.

The application area flanks must be thoroughly cleaned internally so they are free of dust, sand and other loose particles.

Waterproofing must be dimensioned so the ratio of the depth to width of material is 1.5:1 (The minimum depth should not be below 8 cm. The maximum diameter of the waterproofing is 300 mm).

Insert a standard 2C PU foam into the penetration depth corresponding to the installation depth. The material is pressed into the penetration from back to front. The sealing compound is recessed 1-5 cm from the wall surface and smoothed with a metal spatula. As an additional safeguard and to hold pipe/cable centred, the exposed material is covered with Koster KB-Fix 5.

Waterproof & Dry - Trusted independent suppliers of Delta products

If you have any technical questions about Koster KB-Flex 200, call our expert team on 0203 947 2972. Find out more about Koster waterproofing systems or browse our full range of Koster Tanking products.



  • Excellent adhesion to multiple substrates
  • Easy, simple application
  • Moldable material allows easy replacement of pipes or cables
  • Horizontal and vertical application possible
  • Irregular shapes can be sealed
  • Resists water pressure
More Information
Model DMS 407
Manufacturer Delta Membranes
Packaging Individual item
Size 530ml
Dillution Ready to use
Colour Grey
Country of Manufacture Germany

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