10 Things Everyone Hates About Secondary Glazing Sash Windows Secondary Glazing For Sash Windows

Many homeowners are not able to add double glazing to their homes due to financial constraints or because the structure is listed and any modifications to the exterior are forbidden.

Secondary glazing is a great alternative for sash window and can be put in various ways.

This product is a double-paned, insulated glass that can be placed inside your existing window frame. It provides insulation and noise reduction, while stopping cold air from entering the home.

Fixed Inserts

If you're considering secondary glazing for your sash windows there are many different styles to choose from. Each style comes with distinct advantages including increased security and less condensation. Which is the best choice for you?

The fundamental idea behind secondary glazing is fitting an additional glass inside your existing window frame. This adds a layer of insulation and noiseproofing your home, improving its energy efficiency.

However it's not always possible to add double-glazed windows to your home particularly if you live in a listed structure or are subject to strict regulations regarding planning which dictate what can and can't be done to your exterior.

In these instances, secondary glazing is an excellent alternative that can be installed with relative ease. It's a popular choice for those who want to renovate their old home without having to replace the original sash window a modern one.

There are many different options for secondary glazing sash windows, each one of can be customized to fit your frame. Proprietary systems are usually constructed of painted aluminium frames that fit into the existing staff bead depth on the sash window. box sash windows lets shutters and sills remain.

They can be installed with a variety of mounting methods such as glazing clips and Velcro. These offer a more aesthetic solution to screw-fixed units and are ideally suited to windows that do not need to be opened regularly. Alternatively, you can choose a fixed lift-out unit that can be lifted out and put back in its place with ease to allow windows to be opened.

Horizontal Sliders

Horizontal sliders are the most well-known method to enhance the appearance of your windows. They are also discrete and ideal for historic properties or conservation areas as well as listed property. In most cases, they are installed without access from outside because they operate by the inside.

They are easy to operate by hand and can be open wide or left partially open for ventilation. They are very effective in stopping draughts and also offer the added benefit of filtering out harmful UV light. In summer they can be utilized together with a flyscreen to keep insects out and mosquitoes.


Our Trackglaze horizontal sliding system provides all the benefits of modern double glazing for your classic Sash windows. It is comprised of PVC double sliding tracks on the four sides of the cavity with a simple bristle seal around each glass sheet, and finger pull angle handles to serve as handles and lessen bowing. It is available in kits comprising either 1m or 2m lengths of track and angle that can be joined to make larger spans.

The acoustic advantages of secondary glazing are extremely significant and it can significantly improve noise reduction from outside, particularly the airport, rail and road traffic. The addition of laminated or toughened glass further enhances acoustic performance. Standard secondary glazing reduces outside noise to 52dB (Rw) and specialist glass, such as Stadip Silence Laminated Acoustic Glass can deliver even more impressive levels of acoustic efficiency.

It can improve the efficiency of your home by keeping your house warmer for longer and decreasing dependence on central heating. It is cheaper than replacing the original sash window, and can be installed without having to remove the existing frame.

Vertical Sliders

Secondary glazing is an affordable option that is often easier to manage than full window replacement. It's also suitable for Listed Buildings & Conservation Areas. It's an ideal solution to replace sash windows in Suffolk & Essex with modern insulation benefits, while maintaining the traditional look of older homes.

Vertical Sliders were specifically designed for use in sash windows where hinged panels of the regular kind are not suitable. The system features two secondary sashes, which are secured one over the other inside an outer frame. They are supported by spring balances to allow for effortless movement. The system can be purchased as a 'face-fixed' (installed to the inside of the window) to improve thermal performance, or a'reveal fixed' version which comes with an air cavity for glass inside the window reveal, to ensure optimal acoustic performance.

They can be fitted with a variety of stops and handles to suit the homeowner's preferences, propping open either the bottom or top pane to allow for ventilation, or they can be placed in a closed position for added security. They can be equipped with an insulation bristle to block draughts.

Imagine a vertical slider with 'Choices' secondary glazing has the same authentic wood detailing you'd expect from an antique window treatment. It's available in an array of colours to match your existing sash. It's nearly impossible to distinguish from the original sash windows, since details such as sash horns and traditional joints are incorporated into the design. It's available in a wide variety of sizes and can accept glass up to 6.8mm to give additional insulation against heat loss. The tilt-in feature allows the individual sashes of the window to be hinged backwards on safety stays for easier cleaning.

Hinged Casement

Our single-pane secondary glazing is able to be installed on sash windows in any style, including traditional box sash and casement. Our hinged units are constructed with secure multi-point locking and are available with a key lock handle. This will ensure that the glazed panel is held securely in place and is pulled tightly against the frame, forming a seal to reduce heat loss. Hinged windows can be side-hung or top-hung, and they can also be double-glazed. Double-glazed windows provide better performance in terms of acoustics and are available in 43dB (for 47dB), 51dB (for 51dB) or 47dB (for 49dB).

In contrast to horizontal sash windows with movable sashes that slide horizontally within the frame, casement windows can open outward and capture breezes from different angles. They can be opened both from the top and bottom to allow controlled ventilation. They are therefore able to increase airflow and are a great alternative to traditional sash windows.

They are typically utilized in modern homes as they have small "sightlines" and unobstructed views. However, they can also be fitted into listed properties due to the fact that they do not require transoms or mullions. They can also be used in places that are difficult to reach since they can be opened by turning a handle.

The primary disadvantage of this kind of window is that they can block off large openings, and could limit the use of certain window treatments. They can also be difficult to clean as they swing outward and may require regular maintenance and servicing.

Lift Out Windows

Secondary glazing can be put in place using a variety of ways. The cost of installation will vary depending on your selection of materials such as thickness, thickness and kind of glass. UPVC windows are generally the least expensive followed by aluminium, and then wooden window frames. Specialised glass, as well any other features such as security or sound reduction can also raise prices.

Another factor that affects the cost is the complexity of the installation. The more complex the project is, the more time and labour will be required. This is also applicable to older properties that have more intricate designs for sash windows.

The best way to start is by assessing the condition of your current windows. The survey conducted by a skilled professional will give you a precise idea of what the costs might be.

In general secondary glazing has an insignificant impact on the appearance of your home. This is due to the fact that the modern FINEO double glazing is sleek and subtle frame lines, which means you can get the most efficient thermal performance without compromising on aesthetics.

The horizontal sliding secondary glazing option is popular because it allows easy access to the existing sash window for cleaning or ventilation. These are also available with a tilt feature, which can be activated by opening the catch and raising the secondary glazing panel vertically to a specified degree. This is ideal for windows that don't open frequently and can be used to facilitate access for air cooling in bay windows. They can be used to open the middle sash in a traditional sash Bay Window to create a more symmetrical appearance.