The store will not work correctly in the case when cookies are disabled.
Cookie Policy
We use cookies to give you the best experience on our website. These cookies are safe, secure and
do not contain any sensitive personal information. They are used only by Carboclass Ltd or our
trusted partners. If you continue to use this site, we will assume that you are happy with our
use of these cookies. More details are held in our Privacy Policy.
Sika 4A Waterstop is a rapid setting, ready to use preliminary waterproofing admixture that seals concrete, rock or masonry from severe water ingress before you apply render or gunite. You can use it for quick leak plugging or for fixing anchors, bolts or other fixings in tunnels and culverts, mine galleries, water reservoirs, concrete pipes and manholes.
• Mix with ordinary Portland cement and water
• Sets rapidly
• For use on wet surfaces
• Suitable for use in quick-setting mortar for assembly work