draught proofing; air conditioning vent sealing services; building sealing; interior sealing and caulking services; draught proofing being insulation services; installation of thermal insulation for buildings; building insulating; pipe insulating; insulation of internal and external walls, ceilings and roofs; insulating services [construction]; thermal insulating of buildings; insulating of buildings

testing services for the certification of quality or standards; providing information in the field of energy efficiency; energy auditing; consultancy in the field of energy-saving; testing of sealing materials; technical testing; air flow measurement services