Secondary Glazing

Vertical Sliders

Due to the characteristics of the existing primary window, the Balanced Vertical Slider is the most complex type of secondary glazing system. It is applied generally to older properties. It is particularly suited to the refurbishment and upgrade of the nations architectural heritage. Individually pre-tensioned spiral spring balances control the motion of the sash, enabling infinite vertical positioning. This design has been developed to withstand decades of wear and tear. Tilt in versions can be pivoted through almost 180 degrees. This is useful for cleaning and can be crucial when considering fire escape requirements.

Horizontal Sliders

Generally available in two, three or four panelled versions, the sashes are fitted with brass rollers, ensuring the smoothest sliding action. Twin brush seals provide excellent high sealing efficiency. This has been scientifically proven to eliminate draughts, increase thermal insulation and give greater improvements to the security of the primary windows.

Lift Outs

This is the most cost effective type of secondary glazing available. It’s most commonly used where limited access to the primary window is required. The Lift Out is also the most basic form of secondary glazing. As its name implies, it simply lifts out of a secured channel. Each sash is manufactured with a double brush pile seal, further increasing the thermal and sound insulation properties.