Our Double Glazing Insulated Glass (IG) unit with 28mm Warm Edge Spacer Bars and argon filled achieves a Ug Value of just 1.2 W/m2k.

There is also a 32mm Triple Glazing option which achieves a Ug Value of just 0.8 W/m2k, making it one of the most energy-efficient systems on the market.

Of course, if you manufacture or supply your own glazing, we can provide you with unglazed bifold doors that will easily take your own glass units.