Glazing

The secondary panel will have its own frame and will be sealed around the edges for better thermal efficiency. Argon gas has around a 34% lower thermal conductivity level than air because it is denser so it acts as a better insulator. When it’s used between the panes it’s even harder for heat to escape through double-glazed windows, further improving thermal efficiency. It is also an excellent insulator of heat and is a non-flammable and ‘non-reactive’ gas.
Bow windowWindow consisting of three or more units projecting out from wall to form a radius. Bay windowWindow consisting of three or more units that angle out beyond the wall; often configured with a large center unit and two flanking units. BalancerCounter-weight mechanism to assist raising or lowering of a double-hung or single hung sash. AstragalThe center member of a double door, which is attached to the fixed or inactive door panel. ApronDecorative trim positioned directly underneath a window stool and installed flush against the wall. Wired glassA product in which a wire mesh has been inserted during production.

Our expert team is here to help you select the perfect windows for your needs. Visit our showroom to experience the quality of VELFAC products, or reach out to a VELFAC distributor for guidance. Choosing between double and triple glazing depends on factors like your home’s insulation level, environmental impact, and budget.
Bulletproof GlassGlass designed and produced to resist penetration by bullets. We have specialist teams operating from 8 locations delivering commercial glazing maintenance, repair and refurbishment solutions covering the whole of the United Kingdom. Over twenty five-years experience maintaining and repairing glazed structures for business and public sector enterprises throughout the United Kingdom and mainland Europe. It is unobtrusive, and all of our clients remark how you can barely see it is there. The secondary glazing is also reversible and easily accessible for ventilation and cleaning.
Your local authority has funding available to assist families on lower incomes with the cost of installing energy-efficient home improvements, including double glazing windows. According to Energy Savings Trust, installing A-rated replacement windows in an entirely single-glazed semi-detached property could save you £140 a year. If you replace single glazing windows with A++ rated double glazed options, you could save up to £235 annually.

Double glazing consists of two panes of glass separated by a vacuum or a layer of inert gas such as argon or krypton set in the same frame. The air gap reduces the thermal conductivity between the two panes, keeping the heat inside and the cold out. Many windows also come with Low-E (low emissivity) coatings on one of the glass surfaces, for improved thermal performance. Double-glazed windows have two panes of glass, separated with a layer of normal air or, for more efficiency, a layer of argon gas. The panes are then sealed to keep the gas contained, creating an airtight, sealed unit. To reduce noise and improve thermal insulation, secondary glazing offers an effective and affordable alternative to traditional window replacement.

Lightweight Aluminium isn’t just sleek to look at but almost a necessity for large window frames. On the downside, this metal is a bad insulator but can be used with thermal breaks for better performance. Low-E glass and double-glazing keeps the inside of the glass warmer, reducing the chance of condensation on the inside of your windows. Condensation can quickly spread and mould and dampness also pose health risks. We strive to provide you with choices regarding certain personal data uses, particularly around marketing and advertising.

To see our product range, visit one of our 7 showrooms or speak to a Door Expert today. Can provide a large clear opening for greater ventilation and full access to the existing window. Perfect for keeping the insects out of the Kitchen, available as lift out panels or integrated units.
Combining glass technologies and techniques to create bespoke glass boxes and structures. Top hung sashAn opening window either hung below a transom bar or a full length opening window not to be confused with a fanlight which is a small opening window. Flat Roof Skylight VentilatorAn opening window in the roof of a conservatory to allow ventilation. External CillA special moulded section at the bottom of a window or door that allows the rainwater to run off and not run down the brickwork of the base wall making it damp. Edwardian StyleUsually a square or rectangular conservatory design with an apex roof structure. Single-hungDouble-hung styled window in which the top sash is inoperable.