Notes

A List Of Common Errors That People Make When Using Secondary Glazing Sash Windows
Secondary Glazing For Sash Windows

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

Secondary glazing is an excellent alternative to sash windows and can be put in various ways.

It consists of an extra glass pane inside the window frame, which blocks cold air from entering your home, as well as providing insulation and noise reduction.

Fixed Inserts

If you're thinking about secondary glazing for your sash windows there are several different styles to choose from. Each comes with its own set of advantages, from increased security to less condensation. Which is the best choice for you?

The basic premise of secondary glazing is fitting an additional glass within your window frame. This provides an additional layer of soundproofing and insulation which can greatly improve your home's energy efficiency.

However it's not always feasible to install new double-glazed windows for your home particularly if you reside in a listed structure or are subject to strict planning regulations that define what can and can't be done to your exterior.

Secondary glazing is a great alternative in these instances. It can be set up quite easily. It's also a popular option for those looking to upgrade their old home without having to tear down the original windows with sash and replace them with contemporary ones.


There are many different options for secondary glazing on Sash windows. Each one can be customized to fit into your existing frame. Proprietary systems typically have painted aluminium frames that are designed to fit within the depth of a staff bead an existing sash window, meaning that shutters and sills are still able to be used.

They can be equipped with a variety of installation methods such as glazing clips and Velcro. These offer a more aesthetic alternative to screw-fixed units and are ideally suited to windows that don't need to be opened frequently. You can also choose an unfixed lift-out unit that can be easily lifted out and reinstalled to open your windows.

Horizontal Sliders

Horizontal sliders are the most well-known method to enhance the appearance of your windows with sash. They are also quiet and ideal for historic properties or conservation areas as well as listed property. In the majority of instances, they can be installed without external access because they are operated from inside.

They can be operated with a hand, and they can be left open or partially opened to allow ventilation. They are extremely effective in eliminating draughts and they also have the benefit of blocking harmful UV light. They can be used in combination with an insect screen to deter mosquitoes and other insects during summer months.

Our Trackglaze horizontal sliding systems offer all the benefits of modern double glazing for your classic Sash windows. It is comprised of PVC double sliding tracks that run across all four sides of the cavity with an easy bristle seal around each glass sheet and angle handles that can be pulled by fingers to serve as handles and lessen bowing. It comes in kits of 1m or 2m track and angle that can be put together to create bigger spans.

Secondary glazing can have a significant effect on noise reduction, particularly for rail, road and airport traffic. The addition of laminated glass or toughened glasses further improves the acoustic performance. Standard secondary glazing can reduce outside noise by 52dB(Rw) and specialist glass such as Stadip Silence Laminated Acoustic Glass can provide even greater levels of acoustic performance.

It can increase the energy efficiency of your home by keeping it warm for longer. This can reduce your reliance on central heat. It is less expensive than replacing your old sash windows and is installed without the need to remove the window or door frame.

Vertical Sliders

Secondary glazing is an affordable option that is usually more manageable than a complete window replacement. It's also suitable for Listed Buildings & Conservation Areas. It's an excellent way to improve the look of traditional sash windows in Suffolk & Essex while retaining their character.

Vertical Sliders were developed for use in sash windows where hinged panels of the regular kind would not be suitable. They come with two secondary sashes which are secured, one over the other, within an outer frame and are supported by strong spring balances to allow for easy movement. The system can be purchased as a 'face-fixed' (installed to the inside of the existing window) for improved thermal performance, or a'reveal fixed' version which comes with an air cavity for glass inside the window reveal, to ensure optimal sound quality.

They can be equipped with a variety handles and stop strips to meet the needs of the homeowner, propping open either the top or bottom pane for ventilation or fixed in an open position for additional security. They can be equipped with an insulating seal bristle to prevent draughts.

'Choices’ Imagine vertical slider secondary glass has the same authentic wood details you'd expect to find in a window covering from the past. It comes in a variety of colours that are compatible with your sash. It's almost impossible to distinguish from the original sash windows, since details such as sash horns and traditional butt joints are integrated into the design. It's available in an extensive selection of sizes and will accept glass up to 6.8mm to add insulation to prevent loss of heat. The tilt-in option permits the sashes of each window to be hinged backwards on safety stays for easier cleaning.

Hinged Casement

Our single-pane hinged secondary glazing can be incorporated into windows made of sash in any style including traditional and casement sash. The hinged units we offer can be equipped with a keylock handle and are made with multi-point locking. This will ensure that the glass panel is securely locked in place and is pulled tightly to the outer frame, creating a seal to minimize loss of heat. Hinged windows are available either top or side hung and are also available with double-glazed. Double-glazed windows provide better acoustic performances and are available in 43dB (for 47dB), 51dB (for 51dB) or 47dB (for 49dB).

Unlike horizontal sash windows, which have movable sashes, slide horizontally within the frame casement windows are able to open outward and capture breezes from a variety of angles. They can be opened both from the top and bottom for controlled airflow. They also increase airflow and offer a fantastic alternative to traditional sash windows.

They are commonly used in modern homes because they have small "sightlines" and unobstructed views. However, they can also be fitted into listed homes due to the fact that they do not require transoms or mullions. They are also a good option for areas that are difficult to access as they can be opened with the turn of the handle.

This type of window can be a problem as it could limit the use of certain window coverings. They are also difficult to clean because they swing outward and could require regular maintenance and servicing.

Lift Out Windows

Secondary glazing can be put in in a variety of ways and the cost will differ depending on the type, thickness and the materials you select for your frames and panes. uPVC frames are the least expensive followed by aluminium, and then wooden frames. Specialized sash window cost may also increase the cost and include additional features such as security or sound reduction.

The complexity of the installation will affect the cost. The more complicated the installation will take longer and require more labor it will require. This can also apply to historic properties with more complex sash windows, which require specialist knowledge and expertise.

Assessing the condition of existing windows is a good place to start. You can get a precise estimate of the cost by having them examined by an expert.

Generally speaking, secondary glazing will have minimal impact on the overall appearance of your home. Modern FINEO double-glazing is thin and discrete frame lines. This allows you to achieve thermal efficiency without compromising aesthetics.

The horizontal sliding secondary glazing option is a popular choice because it permits easy access to the existing sash window to clean or for ventilation. They also come with a tilt feature, which is activated by opening the catch and then lifting your secondary glazing panel vertically to a specified point. This is ideal for windows that aren't opened frequently and can be used to allow access to air conditioning in bay windows. You can use them to open the middle sash of a traditional Bay Window to create a symmetrical appearance.

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