Sika® ViscoTight®

New generation waterproofing and superplasticizing admixture for water tight concrete construction

Sika® ViscoTight® is a concentrated liquid admixture used as a waterproofing fortifier with cement based products especially concrete or mortars. The power of Sika® ViscoTight® is its ability to create a concrete/mortar mix with improved strengths and greatly improved waterproofing properties

Sika® ViscoTight® acts by different mechanisms. Through surface absorption and sterical separation effect on the cement particles, in parallel to the hydration on process, the following properties are obtained:
  • High water reduction (resulting in high density and strength)
  • Excellent flowability
  • Improved waterproofing characteristics of concrete and mortar
  • Reduced rate of carbonation of the concrete
Sika® ViscoTight® does not contain chloride or other steel corrosion promoting ingredients. It may therefore be used without any restriction for reinforced and prestressed concrete construction.