Mark was excellent and I would both hire and recommend him. Mark arrived on time and thoroughly investigated the source of the damp patches, looking at areas in and outside theproperty explaining as he went along what he was looking for and why. He suggested that the damp was coming in through an almost decomposed and rotten sill in the bathroom and travelling down the wall behind the tiling into the ceilings and walls of the rooms below. This seems feasible as there is no evidence of damp under the floorboards of the bathroom and adjoining room. He also checked the boiler to see whether this was in anyway responsible and gave me free advice on how to manage low pressure situations. Mark charged me a fee that was less than his quote because the remedy was a building job. He cleared up thoroughly after his work and was very courteous and professional throughout.