AT System


High security PVC waterstop system with coextruded hydrophilic bulbs to provide a unique combination of active and passive protection for joints in concrete.

AT System waterstops are specially developed for water excluding and retaining structures such as basements, reservoirs, sewage treatment works, etc. The AT System is an important advance in concrete joint protection which combines Active Technology with the conventional mechanical properties of PVC waterstops.

Serviseal® AT 240:

Can be cast on the external face for water excluding structures such as basements and sub structures or ground bearing slabs only of water retaining structures.

Servitite® AT 200:

An internally placed waterstop which is cast centrally in the concrete to resist internal and external water pressure.

The two profiles can be combined, using factory produced transition junctions where Serviseal® AT 240 is used on the base slab and Servitite AT 200 is used within walls.

Features/ Benefits:

  • Increased security.
  • Continuously active sealing.
  • Prevents water tracking.
  • Engineered profile.
  • Co-extruded section.
  • Protective coating.
  • Simple installation.
  • Comprehensive system.

General information

Specification data - Centrally placed unplasticized polyvinyl chloride (PVC-U) flexible waterstops

Product Reference

Serviseal® AT 240

Servitite AT 200 – 200

Servitite® AT 200

200 mm wide.

Secura clips

Not required

Small (20 mm)

To tie Servitite® AT 200 reinforcement.

Standard product features

Technical properties:

  • Tensile strength: >14 N/mm².
  • Elongation at break: 250%.
  • BS Softness: 42.
  • Specific gravity: 1.42.

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