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Innovation In Energy Efficient Components for Glazing Units

A superior technology designed to minimise energy loss through your windows

Our British Brands are now Globally Recognised

From inception to perfection, we manufacture over 50% of the products we supply

Supplying the largest volume of Spacer Bars to the UK market

Warm Edge, Aluminium and Steel Spacers for Manufacturing Superior Glazing Units

DecraLed®, DecraGlow® and DecraBevels®

Are famous worldwide to bring windows, doors and conservatories to life

Offering everything for High Performance Glazing except for the glass

From inception to perfection, we manufacture over 50% of the products we supply

Welcome to Thermoseal Group

Thermoseal Group Limited is the largest UK specialist insulated glass (IG) component manufacturer and distributor supplying over 2,500 components and a wide range of Thermoseal Group Equipment (TGE) for manufacturing IG sealed units (IG sealed units are sometimes referred to as ‘Dual Pane Glass’ – double glazing, triple glazing or quadruple glazing). We manufacture over 50% of the components we supply to a worldwide customer base.

Our Products

Our Products

Thermoseal Group is the one-stop-shop for IG sealed unit components including some of our own highest performance industry-leading brands:

Glass Components

Offering one the widest range of components and equipment used in the manufacture of IG sealed units


Help to achieve a truly authentic stained glass effect at a fraction of the time and cost

Warm Edge

A superior technology warm edge range designed to help minimise energy loss through your windows

Our Product Range

Thermoseal Group is the one-stop-shop for insulated glass (IG) sealed unit components. We sell a variety of our own industry-leading brands including:

Thermoseal Group

Our business is dedicated to the manufacture and supply of highest performance components and machinery used in the manufacture of insulated glass. Our particular focus Is on the development of components designed to help meet the changing requirements for more thermally efficient windows. We are a multiple award-winning organisation with almost 40 years in the industry.

Latest News

Thermoseal Group nominated as G23 'Component Supplier of the Year' Finalist
Date Added 03/10/23

Thermoseal Group is a finalist in the Component Supplier of the Year category in the G23 Awards, in recognition of its investment in infrastructure,... > More


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