Vandex BB75 Tanking Slurry (25 kg) Water Resistant Cement Concrete, Masonry (Basements, Ponds, tanks, Water and Sewage Treatment)

I have used this product for years. Its never failed. Gives good waterproofing for basements and cellars.

We are not DIY experts but managed to add to a conservatory wall and resolve a problem, quite easily, with a brush.

Worked well. Spread easily and did not crack as it dried even in slightly warmer weather.

Perfect

I have applied this product to old stone house basement wall to stop water penetration under pressure , it hasn't made any difference at all. From my experience of these type problems the best way by far is to excavate externally and put a waterproof membrane against the wall and then back fill with gravel.