Just had to say how professional, informative and thorough Gareth was.

Just had to say how professional, informative and thorough Gareth was. He came to look at my damp wall but let me know what he was doing, why he was doing it, what he was looking for and showed me the results so that I understood what he had found. Because of him, we got a thorough diagnosis of the root cause rather than a series of holes in the wall looking for a non-existent pipe.