Manufacturing expansion

Thermoseal Group, the UK manufacturer of warm edge spacer systems and bespoke accessories, reports further manufacturing expansion following a continued increase in demand for Thermobar and Thermoflex warm edge spacers and accessories.

The Group’s sales director, Mark Hickox, said: “We now supply over 50% of the UK spacer market and this percentage is increasing on a continual basis now that Thermobar is proven as the most thermally efficient spacer system with a Bundesverband Flachglass (BF) data sheet value of 0.14W/mK. 

“Thermobar has also proven to be the preferred product for our customers to manufacture with, due to its many advantages in production of insulated glass (IG) sealed units.

“Thermoflex sales are up by over a thousand percent and demand for this product is seeing continual growth as customers try the product and see its advantages. We also have an IFT Rosenheim thermal conductivity report issued stating that Thermoflex has been tested and proven with a thermal efficiency of 0.14W/mK. A BF data sheet will follow shortly.

“This now means that it is proven that we supply the most thermally efficient warm edge spacer tube and foam system which, according to BFRC substitution rules, can be substituted within existing Window Energy Rating simulations for any other spacer tube system or any other foam system.

“Thermobar and Thermoflex warm edge spacers have been subject to our rigorous in-house testing facilities before they are submitted for external testing. Both products have passed relevant EN1279 tests and have also been tested to many other international standards. They are now both proving to be of interest to the international market, which has compounded the growth in demand for the products and contributed towards the growth of our manufacturing facilities.

“We have invested massively in our innovation centre and EN1279 test facilities to ensure that we understand the conditions within a glazing unit and how each component performs within the lifetime of the unit.

“Our recent investment in three additional Thermobar production lines and an additional Thermoflex line is testament to our confidence in our products.

“We have just booked to exhibit at the Vitrum exhibition in Milan and Glass Build Atlanta later this year. We also have new warm edge products in the pipeline that we look forward to introducing to the market.”

To download the latest BF data sheet, visit  The link to the Thermoseal data sheet is

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