triple strength medusa

triple strength medusa - admixture for increasing water-repellence of render finishes

Admixture in white powder form — addition to a mortar mix will improve the water repellence of finished work.


  • 330g (20 per carton)
  • 5kg

About this product

triple strength medusa provides economical and durable renders and mortars with increased water repellence and reduces surface water absorption, therefore reducing the amount of staining.

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Unfortunately there is no consumption calculator currently available for this product, this may be due to complexities estimating how much product you may need. Please consult the Technical Datasheet which can be downloaded below or contact

Features and benefits

  • Provides increased water repellence  
  • Assists in providing even suction in undercoats
  • Reduces water permeability
  • Reduces surface water absorption

Things to consider

  • Not suitable for use with high alumina or calcium aluminate cements
  • Shelf life of unopened sachet is at least 12 months when stored in dry conditions 

Technical & Safety Data Sheets and Certification

This product can be used as part of these projects

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