Cleartherm Glass Sealed Units

Cleartherm Glass Sealed Units Ltd is a UK-based insulated glass unit (IGU) manufacturer with more than 35 years of experience. Founded in 1988 and operating from a 15,000 sq ft facility in Leicestershire, we have grown from manually producing a few hundred units per week into one of the industry’s most forward-thinking producers. We specialise in the design and manufacture of high-quality sealed glass units for windows and doors, balancing exceptional performance, consistency and efficiency.