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Beware Of These "Trends" About Secondary Glazing Sash Windows
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 live in listed buildings that restrict any exterior changes.

Secondary glazing is a great alternative to sash windows. It can be put in various ways.

This product is a double-paned window that fits inside your existing window frame. It provides insulation and noise reduction, in addition to blocking cold air from entering the home.

Fixed Inserts

There are many different types of secondary glazing for sash windows. Each comes with its own set of advantages, from increased security to lower condensation. Which one is best for you?

The basic idea behind secondary glazing is to incorporate an additional glass within the frame of your existing window. This provides an additional layer of insulation and noiseproofing your home, increasing its energy efficiency.

It's not always feasible to add double-glazed windows, particularly if you live in an listed property or if you are bound by strict planning regulations that dictate what can and can't be done to your exterior.

Secondary glazing is a fantastic alternative in these instances. It can be installed quite easily. It's a popular option for those who want to modernize their home without the need to replace the original sash window with a modern one.

There are a number of different options for secondary glazing sash windows, each of that can be adapted to fit your frame. The proprietary systems typically feature painted aluminium frames that are designed to fit within the depth of a staff bead on an existing sash window, so that shutters and sills are still able to be used.

They can be fitted using a variety of methods for installation, including glazing clips or Velcro. These offer a more aesthetic solution than screw-fixed units, and are especially suited for windows that don't need to be opened frequently. 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 option for enhancing existing sash windows. They are also quiet and suitable for older homes or conservation areas as well as listed property. In the majority of cases, they can be installed without access from outside because they operate from the inside.

They are simple to operate by hand and can be opened wide or left partially open for ventilation. They are effective at keeping out draughts, and also filter harmful UV light. They can be used in combination with an insect screen to deter mosquitoes and other insects during summer months.

Trackglaze horizontal sliding systems give all the benefits of double glazing for your traditional Sash window. It consists of PVC double sliding tracks on all four sides of the cavity with the simple bristle seal that is placed around each glass sheet and angle handles that can be pulled by fingers to serve as handles and reduce bowing. It is available in kits of either 1m or 2m lengths of track and angle that can be joined to make larger spans.

The acoustic benefits of secondary glazing are extremely significant and can dramatically improve noise reduction from outside, especially road, rail & airport traffic. The inclusion of laminated glass or toughened glasses improves the acoustic performance. Secondary glazing that is standard can reduce outside noise to 52dB(Rw), and specialist glass like Stadip Silence Laminated Acoustic Glass can deliver even higher levels of acoustic performances.

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

Vertical Sliders

Secondary glazing is a cost-effective choice that is typically simpler to manage than a full window replacement. It is suitable for Listed Buildings & Conservation Areas. It's an excellent way to modernize traditional sash windows in Suffolk & Essex while retaining their originality.

Vertical Sliders were specifically designed to be used in sash window applications where hinged panels of the regular kind are not suitable. The system has two secondary sashes that are secured one over the other within an outer frame. They are supported by spring balances that allow for easy movement. The system can be purchased as a 'face-fixed' (installed to the inside of the window) for improved thermal performance or a 'reveal-fixed version that is fitted with a glass to glass cavity inside the window reveal, for optimum acoustic performance.

They can be fitted with a variety of stops and handles to suit the homeowner's preferences and can be used to prop open the bottom or top pane to allow for ventilation, or they can be placed in an open position for additional security. They can also be equipped with an insulating bristle seal that can keep out draughts.

Imagine a vertical slider with 'Choices' secondary glazing has all the authentic timber detailing you'd expect from an antique window treatment and comes in an array of colours to match your existing sash. It's difficult to distinguish from the original sash window with details such as sash horns & traditional butt joints being incorporated into the design. It is available in various sizes and can be fitted with glass up to 6.8mm for additional insulation against heat loss. 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 secondary glass can be positioned on sash windows in any design, including traditional box sash and casement. The hinged units we offer can be equipped with a keylock handle and are manufactured with multi-point locking. This will ensure that the glazed panel is locked securely in place and pulls tightly against the frame creating a seal designed to reduce heat loss. Hinged windows are available either side or top hung and can also be constructed by double-glazing. Double-glazed windows provide better sound insulation and are available in 43dB (for 47dB), 51dB (for 51dB) or 47dB (for 49dB).

In contrast to horizontal sash windows which have movable sashes that slide horizontally within the frame casement windows can open outwards and catch breezes from various angles. sash window repairs hertford Repair My Windows And Doors can be opened from the top and bottom for controlled airflow. They are therefore able to increase airflow and offer a fantastic alternative to traditional sash windows.

They are commonly utilized in modern homes as they have small "sightlines" and unobstructed views, but can also be fitted into listed homes due to the fact that they don't require transoms or mullions. They're also a good choice for hard-to-reach areas since they can be opened by the twist of the handle.

This type of window can be a problem as it could limit the use of certain window coverings. They can also be difficult to clean because they open outwards, and could require regular maintenance and service.

Lift Out Windows

Secondary glazing can be installed by a variety of methods. The cost of installation will vary according to your selection of materials, thickness, and type of glass. Upvc frames are the most expensive, followed by aluminium and wooden frames. Specialised glass can also increase the price, as well as any extra features, such as security or noise reduction.

The complexity of the installation will also impact the cost. The more complicated the installation is, the more time and labor-intensive it will be. This is also applicable to older properties with more complex designs for sash windows.


Assessing the condition of existing windows is a good way to start. You can get a reliable estimate of the cost by having them inspected by professionals.

In general, secondary glazing has little effect on the appearance of your home. This is due to the fact that the modern FINEO double-glazing has sleek and subtle frame lines, which means you can attain thermal efficiency without sacrificing aesthetics.

A popular option for secondary glazing is horizontal sliding, which gives easy access to existing sash windows to clean or ventilation. These are also available with a tilt function, which is activated by releasing the catch and lifting your secondary glazing panel vertically to a predetermined point. This is a great option for windows that don't open frequently and can be used to make it easier to access air conditioning in bay windows. You can also use them to open up the middle sash on an old-fashioned sash bay window to give a more symmetrical appearance.

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