of the times it could be due to faulty or inefficient piping and drainage in
building while construction, this problem takes time to completely go away. Use
Roff Hyseal, it is a waterproof coating.
1. Clean the
2. 2. get rid
of all the flaking and everything
3. 3. Apply
Hyseal on a clean wet surface
Keep curing it with water for a
week this is what helps for lasting effect. I followed this and it has been
comparatively better than the other waterproofing products I used. Hope this
help you too.