JHM Roofing LtdBased in Stevenage, Hertfordshire, JHM Roofing Ltd. provide a full commercial roofing & domestic roofing service in Hertfordshire, Bedfordshire, Buckinghamshire and North London.Father and Son team, Jeff & Paul Mott, have between them over 50 years experience in the roofing business have several single ply fitters they can call on when needed for larger roofing projects.Roofing works carried out include slating , tiling and lead work that are the traditional skills in the roofing trade. But core business in last few years has been the fitting of the latest in flat roofing membrane generically known as single ply.