Sika 4A Waterstop Clear 5L

Product code: SK4A5 | Barcode: 5055047200109

 (Inc VAT) Each pack £64.49 (Inc VAT)  each pack

Sika-4a is a rapid setting waterproofing admixture. When mixed with ordinary Portland cement and water, it sets rapidly to seal areas of severe water infiltration through concrete, rock or masonry.

50 in stock



Sika-4a is used as preliminary waterproofing work on wet surfaces or where there is general infiltration of water, prior to the application of subsequent cementitious render or gunite. Typical applications are tunnels and culverts, mine galleries, water reservoirs, concrete pipes and manholes. It can also be used in quick setting mortar for assembly work, e.g. for fixing anchors, bolts and other fitting subject to early loading in rock or concrete.

  • Rapid setting for rapid leak plugging and/or fixing.
  • Ready to use, just add clean water and ordinary Portland cement.
  • Does not contain chlorides.
  • Only use with fresh ordinary Portland cement Setting times will be affected by ambient temperature, water and Sika-4a temperature, supplier and age of ordinary Portland cement.
  • Trials are recommended varying the Sika-4a water dosage, temperature and type of ordinary Portland cement until the required performance is achieved.
  • Provides the immediate sealing of low to moderate pressure water leaks in concrete, rock or brickwork.
  • Ideal for use in basements, tunnels, cellars, pools and more.
  • Rapid setting time.
  • Chloride and solvent free.
  • Seals water leaks.
  • Just Add Water and Ordinary Portland Cement.
  • For basement,pits,pools and subways.


Delivery Information
We aim to process all orders placed by 12 PM on Mon-Fri (working days) on the same day.
Standard UK Delivery 3 to 5 working days £3.99 + VAT
Next Day Delivery Orders placed before 12 PM (Mon - Thu). £6.65 + VAT
Standard UK Delivery - 3 to 5 working days £3.99
Next Day Delivery - Next working day if ordered before midday. Orders placed before 1pm (Mon - Fri) £5.99
Saturday Delivery - Orders placed before 1pm (Fri). Next working day if ordered before midday. £25
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  • Simply inform us of any return within 30 days of the original order date.
  • Please provide the return order number for quick refund process.
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