Twinfix, when they were known as Thermoclear UK Ltd, were the first company in Europe to offer glazing bars that were specifically designed for installing multiwall polycarbonate glazing sheet. (A traditional bar used to fit glass is not wide enough to securely hold polycarbonate in place.) Since then Twinfix have continued to develop the range and now offer an extremely wide selection of glazing bar systems, some of which have also found favour for installing glass and double-glazed glass units.

Most of our glazing bar systems and complementary fixing accessories are manufactured from powder coated aluminium, and are available as standard in either white or brown, altough for a minimum quantity order you can select other colours. 

We have divided the bars into two sections, Structural Glazing Bar Systems or Rafter Gasket Systems, so you can select the relevant section below that fits your requirements: