Over three-quarters of all products sold by Thermoseal Group were manufactured in-house at its UK sites, in 2024.

Investment in the automation of Thermobar production has seen the Group’s annual production capacity more than double, with further investment in tooling, injection moulding, transport, recycling and testing at its Birmingham and Wigan facilities.

Thermoseal Group’s sales director, Mark Hickox, said: “As part of the Fenzi Group, we have access to Europe’s most comprehensive product range, but we’re also proud to have manufactured more than three quarters of what we sold last year, here in the UK.

“Producing the bulk of our offering in-house means we can guarantee they will meet the highest quality standards. Utilising our knowledgeable staff, extensive EN1279 lab testing facilities and decades of experience in our field, we can offer our customers, at home and overseas, the best products and service available.”

According to the latest test results from IFT Rosenheim, also approved by the British Fenestration Rating Council (BFRC) in the UK, Thermoseal Group’s Thermoflex product is now the best performing flexible silicone rubber spacer bar in the world, adding further testament to the quality of its warm edge products.

“The importance of the fact that we both manufacture the majority of our own products and test them in-house cannot be overstated,” added Mark.

“In our R&D phase, we have full control over the testing of our new products, to ensure that they not only perform well, but that they also work perfectly with other products in a complete unit. Once they have met our testing criteria, we are then able to manufacture them to our own rigorous quality standards to deliver high-performance products for our customers – guaranteed.”