Our warmest welcome to the website of Sterling Thermal - installers and designers of thermal insulation, trace heating and KoolDuct solutions in the UK and Overseas. We offer a full range of services, including: - design and installation of all forms of thermal insulation - trace heating - pre-insulated air movement - traditional ductwork systems - sheet metal cladding - acoustic insulation - passive fire protection Quality and reliability remain the foundation of Sterling Thermal's success, with a commitment to provide an unparalleled level of service on all projects, whether large or small.