The Sika®-1 Pre-Bagged Structural Waterproofing System has been used to control water ingress on new build, and repair and refurbishment projects worldwide.

Originally invented by Kaspar Winkler, the founder of Sika in 1910, Sika®-1 was a quick setting waterproofing admixture for mortar, which was used to waterproof the Gotthard Tunnel, enabling the Swiss railway company to electrify this important connection between Northern and Southern Europe.

Now available as a BBA approved structural waterproofing system the Sika®-1 Pre-Bagged Waterproofing System consists of watertight renders and screeds produced using the Sika®-1 Waterproofing Liquid and Sika®-1 Pre-Batched Mortars. The mortars consist of a blend of special cement and kiln dried graded aggregates. Packaged in 4 grades, each specifically designed for optimum application performance and durability.

The Sika®-1 Pre-bagged waterproofing system consists of a render system for use on walls and overhead surfaces, and a screed system for use on the floor.

When mixed with the diluted Sika®-1 Liquid Waterproofing Admixture they provide the multicoat components for the structural waterproofing systems.

No ongoing maintenance

Once applied there is no requirement for drainage products or equipment such as water pumps.

Other benefits

  • Withstand high water pressures
  • Bonds to the substrate
  • Hard-wearing surface
  • Follow contours of structures
  • 100-year track record
  • Can be used to achieve Grades 1-3 according BS 8102-2009
  • Suitable for high water table according to BS 8102-2009
  • Drinking water inspectorate approved ref no. 56.4.94
  • BBA approved
  • Sika offers a guarantee when the product is installed by a registered contractor.

Sika®-1 Render 3-Coat System

1

Sika®-1 Spritz & Bonding Coat Mortar

2

Sika®-1 Render Mortar

3

Sika®-1 Finishing Mortar

Sika®-1 Waterproofer

Sika®-1 Screed 3-Coat System

1

Sika®-1 Spritz & Bonding Coat Mortar

2

Sika®-1 Screed Mortar

Sika®-1 Waterproofer

Complementary products

Sikadur® Combiflex®