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Sika -1 Waterproofer

Availability: In Stock

Sika 1 is an aqueous solution containing complex colloidal silicates

Sika®-1 Waterproofer

Sika 1 is an aqueous solution containing complex colloidal silicates. In the presence of water these swell and block the capillaries and pores in the applied sand/cement renders, screeds and mortar to provide an effective barrier against the transmission of liquid water.


  • Structural waterproof renders to resist water pressure below ground

  • Structural waterproof screeds to resist water pressure below ground

  • Waterproof renders to resist moisture and dampness above ground level Internal waterproof tanking

  • General waterproofing admixture for mortar

  • Part of the Sika Watertight Concrete system (See separate BBA certificate and data sheet)

Characteristics and Advantages

  • Proven for more than 90 years

  • Pre batched system mortars available

  • For brick, concrete and stone substrates

  • Compatible with OPC and SRC

  • Can be applied against live water infiltration

  • Wall render and screed application

  • Can be used internally and externally

Colour: Yellow

Size: 5L

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