Vandex BB75 Tanking Slurry - BBA Approved Waterproofing Cement for Basements, Ponds, Reservoirs (12.5Kg)

Found it easier to mix by adding slurry to water A little more water (very small amount) allows you to “paint” on the mix with a brush - then anyone can apply it to a wall. We used ours to waterproof our outhouse shed to accommodate a freezer.

I'm strictly DIY, building a pond that is partly below ground, used this in a just incase capacity so can't comment on it's effectiveness. The instructions are clear and easy, I did buy a plaster mixing attachment for drill and measuring out the water to it's guide, then add the powder to the water it was easy to prepare and apply.

This was recommended to me by the builder who fitted my kitchen. My son in law has used it on a wall where I’d had a leak, excellent stuff and it’s in powder form so easy to use just what you want. I suppose time will tell if it’s done it’s job! So far so good and not expensive either.

Like the packaging, however 12.5 kg is not much. I liked so much I ordered more to fix my garden water feature.

I have used this product many times - and in Professional Architectural Practice and it proves to be an extremely effective way of arresting damp and water penetration both above and below DPC levels

Hard to mix properly without mixer but spreads and goes on well and does the job

Might work for you, but unfortunately I have the same problem post application, just slightly less ingress

adhesion excellent and it does the job