Business Details
38 Years
experience
Trusted Glass Sealed Units Manufacturer in Leicester
Established in 1988, Cleartherm has evolved from a small operation producing 400 sealed units weekly to a modern facility manufacturing over 4,000 units weekly. Our Leicestershire headquarters utilise state-of-the-art technology, including automated IGU lines and computerised cutting tables, to ensure precision and efficiency. We prioritise compliance with current legislation, offering products that meet or exceed Window Energy Rating C standards. Our partnership with Pilkington ensures access to premium glass materials, while our ISO 9001:2015 certification underscores our commitment to quality management. Over 2.5 million has been invested in advanced manufacturing systems to maintain our competitive edge.Our team combines technical expertise with a customer-centric approach, delivering tailored solutions for diverse projects. We provide comprehensive support through our experienced office staff, available Monday to Friday from 7:30 AM to 4:30 PM. Our facility is equipped to handle both small-scale and large-volume orders with rapid turnaround times. We actively pursue continuous improvement, ensuring our products align with evolving environmental and energy efficiency demands. Our extensive certifications, including BSI Kitemark and Fire Glass CE Marking, attest to our adherence to rigorous industry standards.
Services
Glass Sealed Units
Toughened Glass
Fire Resistant Glass
Leaded Glass
Obscured Glass
Stained Glass
Georgian Bars
Details
- Year established: 1988
Highlights and features
- 35+ years of specialist glass manufacturing experience
- ISO 9001:2015 certified quality management systems
- Over 2.5 million invested in advanced production technology
- Compliant with Window Energy Rating C and higher standards
- Partnership with leading glass supplier Pilkington
Associations and certifications
- ISO 9001:2015
- BSI Kitemark
- Fire Glass CE Marking
- Fire Glass UKCA Marking
- Super Spacer Dealership
Services
Glass Sealed Units
Our high-performance glass sealed units combine thermal efficiency with durability. Manufactured to meet Window Energy Rating C standards, they reduce heat loss while maintaining acoustic insulation. Ideal for residential and commercial properties seeking energy savings.
Toughened Glass
Safety-focused toughened glass with enhanced strength. Compliant with BSI Kitemark standards, it fractures into small granules when broken, minimising injury risk. Suitable for doors, partitions, and safety-critical applications.
Fire Resistant Glass
Certified fire-resistant units meeting CE and UKCA marking requirements. Designed to maintain structural integrity during fires, providing critical escape time. Commonly used in commercial buildings and escape routes.
Leaded Glass
Decorative leaded glass panels combining aesthetic appeal with modern performance standards. Available in various designs for heritage properties or contemporary spaces requiring visual distinction.
Obscured Glass
Frosted and patterned glass solutions offering light transmission with visual privacy. Compliant with building regulations for bathrooms, offices, and public facilities requiring discretion.
Questions
What glass products do you manufacture?
We produce sealed units, toughened glass, fire-resistant glass, leaded glass, and obscured glass to meet residential and commercial needs.
Are your products energy efficient?
All products meet or exceed Window Energy Rating C standards, with options available for A and A+ ratings to enhance thermal performance.
Do you comply with industry standards?
We hold ISO 9001:2015 certification and BSI Kitemark accreditation, with CE and UKCA marked fire-resistant glass products.
What is your production capacity?
Our Leicester facility produces over 4,000 sealed units weekly using automated systems for consistent quality and efficiency.
