SD Glazing Vertical Secondary Windows are Ideal for Sash Windows, our vertical sliding (VS) panels are slimline and look great. Our ‘Tilt Back Balanced’ panels tilts in for access to your existing windows and to aid cleaning. We also offer a non-tilting version for situations where the tilt is not required - such as schools. Our most economical VS is the non-balanced, non-tilting panel. Our ‘Heavy Duty’ system can take a double glazed unit for maximum results

SD Glazing Hinged Secondary Windows: Hinged Secondary windows allow full and easy access to the outer window. They are neat and unobtrusive with no transoms or mullions to impede the view and will generally provide higher levels of security. This style of secondary glazing is also appropriate for doors

SD Glazing Horizontal Secondary Glazing Installers: Our horizontal sliding secondary glazing windows can be from 400mm to 4900mm wide and between 400mm and 2600mm high and as well as all types of glazzing in aluminium we also can do this in upvc. The panels slide on either wheels or hard wearing nylon skids. In the closed position the panels click and latch onto the outer frame. 

SD Glazing, Fixed Secondary Windows are generally used in combination with other window styles such as Hinged Windows to provide side lights or over lights particular in the treatment of arched windows. They are also used within partition walls as observation windows for laboratories, control rooms, clean rooms and recording studios.

SD Glazing, Lift Out Secondary Units offer a practical solution for treating windows which are rarely used but need access for cleaning or maintenance.

The most popular is our slim system with single seals to the sides often linked by coupling sections with other window styles to act as side lights or over lights. An integral finger lift allows the sash to be lifted into the head and swung forward to allow removal.

SD Glazing secondary Bespoke Window Pannels involves the use of irregular angles and units with more than four sides. There are limitations but, it is possible to shape horizontal sliding units, vertical sliding units hinged casements, lift out units and fixed panes.