Leading UK Manufacturer Of Windows And Doors

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.
We take a look at how double glazing windows work and whether they are the best option for energy efficiency in your home. You can also consider a mix of double and triple-glazing to appropriate locations, providing the best all round solution to your project. As VELFAC double and triple-glazed windows look identical, there is no visual impact regardless of the combination used. Our high-performance and decorative glass for composite doors give you an exceptional amount of choice for your bespoke home improvements. From the classic ‘Riviera’ to the distinguished ‘Virtue’ glazing options, each composite door glass style brings its own unique charm for you to enjoy.
Our glazing styles are available with varying levels of opacity, so you can choose a glass design that looks and performs as you need it to. Our high resolution glazing videos allow you to explore our composite door glazing range in crystal clear quality. View each style up close and explore the opacity levels of the Endurance range to ensure you select the perfect glass design for your composite door. Our range of doors is so vast, and this is matched by our array of glass designs for composite doors. That’s why our easy-to-use Door Designer makes it simpler than ever to find your perfect match.

Astragal Window BarsGrille intended to replicate the look of a True Divided Light unit; consists of an interior grille, exterior grille and spacer between the glass panes. Obscure GlassAny type of glass with uneven surfaces which offers light diffusion and privacy. Insulating glass UnitsInsulating glass is a multi-glass combination consisting of two or more panes enclosing a hermetically-sealed air space. Fire-resistant toughened glass – fire-insulatContains flames and inflammable gas for a longer period of time and prevents not only the transmission of flames and smoke but also of heat to the other side of glazing. Fire-resistant glassSpecial type of glass designed to contains flames and inflammable gas for a longer period.

Although common in the olden days, this glazing has been replaced by the more advanced options. The single-glazed windows come without panes, so rooms with these windows suffer a lot of heat loss and direct effects of outside temperature fluctuations. Glazing comes from the word "glass" and is simply glass used independently or within a wall or window. When it comes to windows, the term "glazing" refers to the installation of glass panes into window frames. There are many reasons for glazing a window, from the transmission of light to adding a layer of insulation as well as presenting a barrier between indoor and outdoor environments.

This coating reflects the heat generated inside the home back into the room, rather than allowing it to escape through the window. At the same time, it allows optimum amounts of sunlight to pass through the window. Our Advance glass boasts a neutral appearance and a centre pane U value of 1.1W/2mK. Whilst a G value of 50% still allows for maximum solar heat gain into the property through the glass. Advance comparable thermal benefits to triple glazed sealed units but is much lighter meaning less strain on hinges and moving mechanisms and is a much more cost effective solution also. Secondary glazing enhances thermal insulation, reducing heat loss by up to 70% and improving energy efficiency The amount of heat saved depends on factors like the quality of installation and the type of material used.
In most cases, secondary glazing is considered a "permitted development" and doesn’t require planning permission. However, exceptions may apply, especially in conservation areas or for listed buildings. We recommend checking with your local planning authority for specific guidance.
Drop our friendly customer services team a call or use the enquiry form below. If you’re interested in finding out more, we’re happy to talk you through your options. In her spare time, Amy can normally be found with a hammer or paint brush in her hand; she completed a whole-house renovation in 2022 and is about to embark on a eco-retrofit project to her cottage in Somerset.

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 recommend that our secondary glazing products are installed by one of our trusted, verified installers. We work with only the best installation companies across the UK to ensure homeowners are offered a seamless secondary glazing installation. Products can be provided in kit form for self-installation upon request, though we do recommend using one of our dedicated secondary glazing installers. Several of our product types come with removable secondary glazed frames, allowing for unrivalled cleaning and maintenance access. Our new secondary glazing product range expands on this, offering a brand-new ‘Slide Past’ variation of our vertical sliding unit, which removes blind spots for cleaning access. The purpose of secondary glazing is to enhance what is already there, which is why we’ve worked to ensure all our product types are easy to maintain.