Thermoseal has declared Thermoflex the best performing flexible silicone rubber spacer bar in the world, following the latest test results from IFT Rosenheim and approved by BFRC in the UK confirming a thermal conductivity of 0.125W/(mK) for the UK’s preferred thickness of 4.8mm.
This means Thermoflex cannot be substituted with any other foam spacer system without putting the whole window through a recalculation, says the manufacturer, and failure to do so will result in a non-compliant window.
Thermoflex, on the other hand, can substitute other flexible silicone rubber spacer bars without recalculation.
Group Sales Director Mark Hickox said. “Thanks to 15 years of research and development right here in the UK, we have developed a premium product, as standard, which outperforms other similar products.
“One reason for this is that we make Thermoflex in the UK with 100% silicone, compounded by us at our impressive modern facility in Wigan.”
The new value achieved by Thermoflex is 0.125W/(mK) compared with the previous conductivity value of 0.175W/(mK), he added.
“A 0.05W/(mK) improvement may not sound a lot when you are comparing conductivity values as low as these, but when regulations, specifiers and building owners are demanding increasingly thermally efficient windows and doors, advances like this are absolutely crucial and help our customers remain competitive.”
Thermoflex is also extensively tested alongside other components supplied by Thermoseal Group – such as desiccant, sealant and injection moulded fittings – to ensure that the insulated units exceed the expected lifespan of the windows they are used in.
