normanwisdom wrote:
I bought my house in October 1998 and it came with a 20 Year damp-course
guarantee

20 Year damp-course guarantee? Ho ho ho. Sorry can't help. Has anybody,
anywhere, ever successfully claimed on the like?

cheers
Jacob

PS sorry just read the thread and someone made the same point earlier.
But don't get depressed there will certainly be simple remedies - but
don't ask a damp-proofing firm.

cheers
Jacob