Hello, I have had an issue with my basement being damp for a while and was advised to have it tanked, i got a builder who has tanked it, though three months later it appears to be coming away from the walls (see attached) any ideas as to what has caused this please? thanks
Excessive damp, it appears not to have stuck to the wall very well, the dark patches look like they are wet, not just damp. How damp/wet was it before it was tanked, maybe a different system required, something with a sump pump???
Hi Phil, Thanks for replying, it was damp to the point you could smell it upstairs but there was no visible water. could it be caused just by the wall not being prepared properly prior to the tanking being added to the walls?
Not an expert on tanking, but from the pic, it does appear not to have stuck very well, the system used appears to be a slurry type, do you know what they used??
sorry i don't, though I saw them bring in two large bucket shaped containers of powder which they mixed and painted on with brushes?
Did they provide any sort of warranty for the work? In any case, they should really come back and sort this, 'cos it hasn't solved the problem. Lot's of tanking products out there, some of which are reckoned to be very effective (the cement-based ones, I think?). Let us know what they say.
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