Business Details
47 Years
experience
Your Trusted Partner for Insulated Glass Components
Thermoseal Group is a multiple award-winning organisation with over 40 years of experience in manufacturing high-performance components for insulated glass (IG) units. Founded in 1979, we are the UK's largest specialist IG component manufacturer and distributor, supplying over 2,500 products globally. Our focus on innovation has led to the development of energy-efficient solutions like Thermobar and Thermoflex Warm Edge Spacers, which achieve Passive House approval for Arctic climates. We manufacture over 50% of the products we supply, including decorative glass components and machinery for IG production.With operations across four UK sites and exports to 40 countries, we combine private funding with reinvested profits to maintain growth. Our commitment to quality is reflected in ISO 9001:2015 certification and partnerships with industry bodies like the Glass and Glazing Federation. In 2024, we became part of the Fenzi Group, enhancing our global reach while retaining our dedication to thermal efficiency and customer-centric service.
Services
Warm Edge Spacers
Desiccants
Sealants
Decorative Glass
Glass Machinery
Details
- Year established: 1979
Highlights and features
- We have over 40 years of experience in insulated glass component manufacturing
- We manufacture over 50% of the products we supply
- Our Thermobar and Thermoflex spacers are Passive House approved
- We operate from 4 rapidly-expanding sites in the UK
- We deliver to 40 countries worldwide
Associations and certifications
- ISO 9001:2015
Services
Warm Edge Spacers
Our Thermobar and Thermoflex warm edge spacers reduce heat loss by up to 94% at window edges. These Passive House-approved components improve thermal efficiency and reduce condensation risk by up to 70%, supporting energy savings and healthier indoor environments. Compatible with double, triple, and quadruple glazing systems.
Desiccants
Eurosiv desiccants adsorb moisture within insulated glass units, maintaining clarity and longevity. Our 3A-grade desiccants are specifically designed to meet EN1279 standards, ensuring optimal performance in gas-filled and standard IG units.
Sealants
We supply dual-seal systems including primary (PIB) and secondary (hot melt, polyurethane) sealants. These products ensure structural integrity and gas retention in insulated glass units, complying with European EN1279 certification requirements.
Decorative Glass
DecraLed decorative systems include adhesive lead strips, bevels, and colour films for stained-glass effects. Our state-of-the-art design studio enables bespoke patterns, compatible with single and double-glazing applications.
Glass Machinery
We offer machinery for IG production, including hot melt extruders, gas fillers, and automated desiccant dispensers. Our equipment supports efficient manufacturing of high-performance sealed units, compliant with EN1279 standards.
Questions
What does Thermoseal Group specialise in?
We specialise in manufacturing components and machinery for insulated glass units, including warm edge spacers, desiccants, sealants, and decorative glass systems.
Where is Thermoseal Group based?
Our headquarters are in Birmingham, UK, with additional sites in Wigan, Kent, and Belfast.
Are Thermoseal Group's products certified?
Yes, our Thermobar and Thermoflex spacers are certified to ISO 9001:2015 and Passive House standards.
Which markets does Thermoseal Group serve?
We export to 40 countries across Asia, Oceania, Europe, North America, and South America.
What machinery does Thermoseal Group supply?
We provide equipment for IG unit production, including hot melt extruders, gas fillers, and desiccant dispensers.
