Sika -4a is a ready to use ,liquid waterproofing compound .When mixed with cement, it sets rapidly to seal areas of severe water infiltration
It is used for preliminary waterproofing work on wet surfaces, prior to the installation of Sika-1 render.It can also be used for fixing bolts and anchors in rock or concrete
It is a part of a range of internationally, used normal and quick setting waterproofing admixture