Air conditioning vent sealing services; Installation of rain gutters; Installation of roof gutters; Installation of ventilating apparatus; Roofing contracting; Roofing repair; Roofing services; Environmental containment, namely, localization, drying and cleaning of particulate and moisture contaminants for buildings and contents therein; Installation and replacement service for heating, ventilating and air conditioning systems; Installation of cavity wall insulation; Installation of heating, ventilation and air-conditioning systems; Installation of heating, refrigerating, air-conditioning, drying, ventilating and dust extraction apparatus; Installation of thermal insulation for buildings; Installation, maintenance and repair of ventilating apparatus; Installation, maintenance and repair of ventilating systems; Installation, maintenance and repair of automatic apparatus for opening and closing ventilation flaps; Installation, maintenance and repair of automatic apparatus for opening and closing windows, fanlights, skylights and ventilation flaps; Installation, maintenance and repair of mechanically operated apparatus for opening and closing ventilation flaps; Installation, maintenance and repair of mechanically operated apparatus for opening and closing windows, fanlights, skylights and ventilation flaps; Providing information in the field of home renovations and repairs; Repair and maintenance of heating, refrigerating, air-conditioning, drying, ventilating and dust extraction apparatus; Roofing installation