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Technical Datasheet
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Sikadur®-31 DW is a 2-part epoxy based moisture tolerant, thixotropic, structural adhesive which bonds most construction materials. It has high mechanical strengths and can also be used for minor concrete repairs, joint filling and crack sealing. Temperature range +10 °C to +30 °C. Internal and external use. It has been specially formulated to meet the requirements for use in contact with drinking water.


Sikadur®-31 DW may only be used by experienced professionals.
As a structural adhesive for bonding:

  • Concrete elements
  • Hard natural stone
  • Ceramics, fibre Cement
  • Mortar, Bricks, Masonry
  • Steel, Iron, Aluminium
  • Wood
  • Polyester, Epoxy
  • Glass
  • Sikadur Combiflex System for drinking water applications

Repair and adhesive for:

  • Corners and edges
  • Holes and void filling
  • Metal profiles
  • Bonding slip bricks

Joint filling and crack sealing:

  • Joint and crack arris / edge repair
  • Sealing non-structural static cracks


  • Can be used in drinking water areas
  • Easy to mix and apply
  • Very good adhesion to most of the construction materials
  • Thixotropic: non-sag and suitable for vertical and overhead application
  • Hardens without shrinkage
  • Different coloured components (for mixing control)
  • No primer needed
  • High initial and ultimate strengths
  • Good abrasion resistance
  • Impermeable to most liquids and water vapour
  • Good chemical resistance