Secondary Glazing For Period Properties Specialist Installers

Secondary glazing is the process of adding an insulating layer of glass or plastic inside existing windows to improve both thermal and sound insulation. Unlike double glazing, where two panes are built into a single unit, secondary glazing involves a separate pane that can be removed, creating a flexible and effective solution for enhancing window performance. This is especially beneficial in period properties where retaining the original window structure is preferred. Secondary glazing offers key features like energy efficiency and noise reduction, providing a cost-effective upgrade to traditional single glazing. Everest double glazed windows are constructed from a frame and a glazed unit featuring an insulating layer of Argon gas sandwiched between two panes of glass.

Low-E glass has an invisible coating that dramatically reduces heat transfer and reflects interior heat into the room. Low-E glass can make a big difference to a window’s thermal performance, whether it’s double or triple glazed. All VELFAC windows and doors are double glazed as standard, and deliver impressive thermal and acoustic insulation, which can be further improved with triple glazing. This style of secondary glazing is arguably the best solution in many cases, and requires fitting an internal secondary window behind your existing single glazed window.

We use only the highest grade, strongest and most durable aluminium to produce secondary glazing units of unparalleled quality. They are all crafted and engineered at our state-of-the-art manufacturing facility in Sheffield, incorporating best-of-British workmanship. Windows are the biggest cause of heat loss in residential buildings, with period properties having the highest percentage of single glazing in the country.

We can fit a range of standard window styles and even offer a bespoke secondary glazing service for the less common shapes. I previously let a property in Stratford which happened to be single glazing Windows. Two of the glass windows became slightly damaged and the glass broke over time & needed replacing. Being a working single mum to three children money can be extremely tight but Simon’s pricing was very reasonable and I cannot thank him enough for the service.

Double and triple glazing vary when it comes to design, function and performance. Double glazing is a sealed unit, consisting of two glass panes with a spacer bar installed between the two. The glazing is sealed together into a single unit, with air and insulating gas trapped in the gap between the two panes. In comparison, triple glazing is made up of three glass panes and features two ‘gas and air pockets’ instead of one. It reduces drafts, and it’s a vast step up from single glazing – which involves a single pane of glass alone acting as a barrier between the inside and outside worlds. As anyone with single glazed windows likely knows, during the cold months, these lone panes can act like chilling units inside a home.