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For concrete waterproofing, durability and protection, Xypex revolutionary crystalline technology has no equivalent.

For over 40 years, Xypex has set an international standard of excellence in concrete waterproofing. Continued worldwide research shows that no other ‘comparative’ product even comes close.

Benefits of Xypex

  • Permanent Crystalline waterproofing – Impermeable

  • Increases concrete durability & service life

  • Self-Healing cracks up to 0.4mm in width

  • Permanent – Xypex is present and active for the life of the concrete

  • Resists extreme Hydrostatic pressure

  • Resistant to aggressive chemicals

  • Protection in Marine Environments

  • Very cost effective compared to membrane systems

Xypex Product Range includes:

  • Admixtures for permanent waterproofing and improved durability

  • Coatings for new and existing structures

  • Concrete Repair Products   

How Xypex Works:

Xypex produces non-soluble crystalline structures deep within the pores and capillary tracts of the concrete – permanently waterproofing it. Take a look…

Xypex Applications

Xypex products are suited to both new and remedial projects:

  • Underground Structures

  • Parking Decks

  • Tunnels

  • Foundations

  • Marine structures

  • Sewage and Water Treatment Tanks

  • Reservoirs


Code of Practice for Weathertight Concrete and Concrete Masonry Construction


Customer Testimonials


Demden are New Zealand’s exclusive suppliers of Xypex.

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