WHY SECONDARY GLAZING?
COVERING ALL SECTORS
Secondary Glazing is the process of installing a Secondary Window over the Primary Window to create the benefits of a double glazed window system. The benefits of Secondary Glazing over Double Glazing is that the Secondary Glazing option allows you to retain the character, both inside and out of the original window, whilst still increasing thermal and acoustic performance offered by double glazing. This makes Secondary Glazing an ideal choice for Listed Buildings. In some instances, Secondary Glazing can actually outperform a double glazing system with a u-value as low as 1.3w/m2k achieved with secondary glazing and heavy curtains.
CHOOSING THE RIGHT PRODUCT
Does the primary window require access for opening or maintenance? If the answer to this question is no, then a simple lift out or fixed panel insert can often be the best and most cost effective solution. The lack of moving parts makes them cheaper to manufacture.
The sightlines of the window should also be considered. Usually, the Secondary Glazing unit is installed to mirror the primary window. However, there are occasions when a different style can be more effective. A great example is on a pair of Vertical Sliding box sash windows, where you could choose to have two Vertical sliding secondary glazing units for each or use one single horizontal slider across both windows.