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

Used for
structural screeds to resist water pressure below ground when used in
conjunction with Sika-1 pre-batched mortars; waterproof renders to resist
moisture above ground; internal below ground basement waterproofing; general
waterproofing admixture for mortar

• Proven track
  record for over 100 years
• Suitable for
  brick, concrete and stone substrates
• Can be applied
  against live water infiltration, in conjunction with Sika 2 and Sika 4a
• Wall render and
  floor screed application
• Can be used
  internally and externally
• Excellent
  resistance to backwater pressure
• Approximate
  coverage 0.75 litres