Damp-proofing failure?

[Bloodybridget]

We had our lower ground floor damp-proofed 4 years ago with a 30 year guarantee, and now there are patches coming through again. The company charges £150 to send a surveyor to inspect the problem, which is only refundable if they accept responsibility! Has anyone had this situation; what did you do? We weren't impressed with them at the time - they drilled through a pipe and tried to deny there was a leak! - and I feel they'll be very likely to say the damp is a new problem. I don't want to throw away the money but if I don't get them back in it kind of makes the guarantee worthless.

Plumber failed to turn up, but two lots of builders arrived. Both lots say the gutter is leaking onto the wall by the door and the door itself is not sealed properly, so water is coming in. That explains the wet wall by the door in the dining room (which opens directly onto the little front garden). Waiting for a quote now.

Very cheering, really. Have a feeling of being able to do something useful to protect the fabric of the house.

Damp in the kitchen to be looked at next. Might be a bit trickier...

@wowfudge, btw, you were right ...

I've learned a lot from PigletJohn.... and I used to work in property management and maintenance.

mtf, glad you seem to have a diagnosis and possible solution!