The back wall was covered with black mold and flaking. Also, water was seeping behind the roof joint of a lean-to conservatory. Tony and his able crew did a really good job in less time than I expected - 3 days to remove flaking paint, fill holes and cracks, apply anti-fungal wash, jet-wash, stabilize coat and two top coats of paint. He had to work above the conservatory as well - which was quite awkward. Tony really paid attention to my request to cure the leaking problem into my conservatory. Great attention to detail - would definitely use again should the need arise.