Enquiry
Contact a licensed waterproofer
Submit your details and they'll be passed to a licensed waterproofing contractor who can assess the issue.
This site is a reference and does not carry out building work, so what follows is a hand-off rather than a booking. There is no price, no timeframe and no obligation attached to it, and the details go to one contractor rather than being distributed to a panel.
Enquiry details
A name and one way to make contact is the minimum. Everything else makes the first conversation more useful.