Secondary Glazing

Secondary glazing is a cost effective way of improving heat retention and noise reduction. It can be manufactured to suit most window types and applications. It provides an easy solution to combat drafts and noise pollution without the upheaval and cost of new windows. Secondary glazing is also an ideal solution to the problems that arise in listed and protected buildings where replacement windows are not an option. To achieve the best performance from a secondary unit they must be located at least 2 inches from the primary window. This will provide a high level of thermal and acoustic insulation. The secondary units come as standard in white (to BS 4842) or base alloy (silver anodised to BS 1615 – 1972)) but can be powder coated to match most colours.

We offer a range of secondary units comprising:

• Horizontal sliding – 2/3/4 panel
• Vertical sliding sash with integral balance springs
• Fixed pane
• Lift out

The secondary units can be glazed in:

• 4mm clear/obscure - float/toughened
• 6mm clear/obscure – float/toughened
• 6.4mm clear laminated safety glass

Cross section – the slim design gives a neat attractive interior appearance

Removal of panels – the sliding and lift out panels are designed to be light and easy to remove for cleaning and maintenance purposes

Runner – the horizontal sliding panel units slide on roller runners for smooth and effortless opening

(Above) 1no. white aluminium 2 panel horizontal sliding unit (with integral acoustic insulated vent) set 100mm from primary aluminium window. Secondary unit designed to match style of the primary window.

(Above) 1no. white aluminium 2 panel vertical sliding unit (with integral acoustic insulated vent and balance springs) set 100mm from primary aluminium window. Secondary unit designed to match style of the primary window.