I recently posted a question about our cardean flooring which is lifting. Since then the shop that fitted it has taken a damp meter test over a couple of days the reading is 75 which we are told is an indication that damp is present.
Is this a very bad reading , what could be causing this damp and what do we do about it? The flooring is in our hall and its laid onto a latex screed on concrete, the latex is lifting from the concrete. Thanks.