Secondary Glazing For Sash Windows
Many homeowners are unable to build new double-glazed windows to their homes, either because of financial limitations or because they reside in listed buildings that prohibit any exterior changes.
Secondary glazing is an excellent alternative to sash windows. It can be put in various ways.
This is a double glazed sash window-paned window that fits into your existing window frame. It offers insulation and noise reduction, while preventing cold air from entering your home.
Fixed Inserts
If you're thinking of secondary glazing for your sash window repair windows, there are several different styles to choose from. Each has its own set of advantages, from improved security to reduced condensation. Which one is the best option for you?
The basic idea behind secondary glazing is to incorporate an additional glass pane within the frame of your existing window. This adds a layer of insulation and noiseproofing your home, improving its energy efficiency.
However it's not always possible to install new double-glazed windows to your property particularly if you live in a listed structure or are subject to strict planning regulations which dictate what can and can't be done to your exterior.
In these cases secondary glazing is a great alternative that can be put in with ease. It's a popular choice for those who wish to update their period home without the need to replace the original sash window with a modern one.
There are a number of different systems available for secondary glazing sash windows, all of which is configurable to suit the frame you have. Proprietary systems are generally constructed of painted aluminium frames that fit into the existing depth of the staff bead on windows with sash. This allows sills and shutters to remain.
They can be equipped with a variety of installation methods that include glazing clips and Velcro. These offer a more aesthetic solution than screw-fixed units, and are especially suited for windows that do not need to be opened regularly. You can also choose a fixed lift-out unit that can be easily removed and then reinstalled to open your windows.
Horizontal Sliders
Horizontal Sliders offer excellent thermal insulation and are the most sought-after solution for improving existing sash windows. They are also discreet and ideal for historic properties as well as conservation areas and listed properties. In the majority of cases, they can be installed without having access to the outside since they operate from the inside.
They can be operated by hand, and they can be left open or partially closed for ventilation. They are extremely effective in eliminating draughts and they also have the benefit of filtering out harmful UV light. In the summer they can be paired with a flyscreen to keep out insects and mosquitoes.
Our Trackglaze horizontal sliding system offers all the advantages of modern double glazing for your classic sash windows. It is comprised of PVC double sliding track that runs across all four sides of the cavity and a simple brush seal around each sheet of glass and a finger pull angle handle to function as a hand and reduce bowing. It is available in kits with 1m or 2m of track and angle that can be stacked together to create larger spans.
Secondary glazing can have a significant effect on noise reduction, especially for road, rail and airport traffic. The use of laminated glass or toughened glasses enhances the acoustic performance. Secondary glazing that is standard reduces outside noise to 52dB (Rw) and specialist glass, like Stadip Silence Laminated Acoustic Glass, can achieve higher levels of acoustic performance.
It can boost the energy efficiency of your house by keeping it warmer for longer. This will decrease your reliance on central heat. It is cheaper than replacing the original sash window cost window, and can be installed without removing the existing frame.
Vertical Sliders
Secondary glazing is an affordable option that is usually easier to manage than full window replacement. It's also suitable for Listed Buildings & Conservation Areas. It's a great option to upgrade windows made of sash in Suffolk & Essex with modern insulation benefits while keeping the traditional look of older homes.
Vertical Sliders are specifically designed for sash windows where regular hinged panels don't work. They have two secondary sashes that are secured to one sash over the other, within an outer frame and are supported by strong spring balances to allow for easy movement. The system can be installed on the inside of an existing window to ensure better thermal performance, or it can be fitted with a cavity between the frame and the glass to maximize acoustic properties.
You can choose from a variety of handles and stop-strips to match your preferences. They can be fixed in the closed position for additional security, or propped open to allow ventilation on the glass's top or bottom. They can also be fitted with an insulation bristle to block drafts.
The 'Choices' Imagine vertical slider secondary glass has the same authentic wood details you'd expect to see in a period window. It is available in a variety of colours that will match your existing sash. It's difficult to distinguish from the original sash window, with features like sash horns & traditional butt joints included in the design. It's available in a broad selection of sizes and will accept glass up to 6.8mm to add insulation to prevent loss of heat. A tilt-in option is also available to allow the individual sashes of the frame to hinge inward on safety stays for easier cleaning.
Hinged Casement
Our single-pane hinged secondary glass can be fitted to sash windows of any style such as traditional and casement sash. Our hinged units can be supplied with a keylock handle and are constructed with multi-point locking. This will ensure that the glass panel is secured securely in place and is pulled tightly against the frame creating a seal designed to reduce heat loss. Hinged windows can be side-hung or top-hung and can be double-glazed. Double-glazed windows offer enhanced performance in terms of acoustics and are available in 43dB (for 47dB) and 51dB (for 51dB) or 47dB (for 49dB).
Casement windows are able open up and let in breezes from different angles. This is different from a the horizontal sash window that has movable sashes inside the frame, which slide horizontally. They can also be opened from the top and bottom to offer controlled ventilation. They are therefore able to improve airflow and are a great alternative to traditional sash window.
They are used in modern homes due to their small "sightlines" which allow for unobstructed view, but they can also be installed in listed buildings since they don't require mullions and transoms. They're also a good choice for hard-to-reach areas as they can be opened by the flick of a handle.
The main drawback of this kind of window is that they can block large openings and may restrict the use of certain window treatments. They can also be difficult to clean as they swing outward and may require regular maintenance and service.
Lift Out Windows
Secondary glazing can be installed by a variety of methods. The cost will differ according to the preference of the materials such as thickness, thickness and type of glass. UPVC frames are the cheapest expensive, followed by aluminium and wooden frames. Specialised glass, as well any additional features like security or sound reduction could also increase prices.
The complexity of the installation will impact the cost. The more complicated the installation will take longer and more labor will be required. This can also apply to older homes with more complex sash windows that require expertise and knowledge.
Examining the condition of your windows in use is a good way to start. You can get an accurate estimate of the cost by having them examined by professionals.
In general secondary glazing has a minimal effect on the appearance of your home. Modern FINEO double-glazing has slim and distinct frame lines. This lets you get the most efficient heat without compromising aesthetics.
The horizontal sliding secondary glazing is a popular choice because it permits easy access to the existing sash window for cleaning or ventilation. These are also available with a tilt feature which can be activated by unlocking the catch and then lifting the secondary glazing panel vertically to a specified level. This is a great option for windows that don't open frequently and can be used to allow access to air conditioning in bay windows. It is also possible to use them to open the middle sash on the traditional sash bay windows to create a more symmetrical look.