How Secondary Glazing Can Improve Your Sash Window Insulation
If you'd like to reap the advantages of double-glazing, but are unable to replace your existing sash window, or don't want to do so, secondary glazing could be a viable option.
It is a cost-effective solution that increases insulation and decreases draughts without altering the original appearance. It can be used in cases where the property deeds specify that the original features should be preserved.
Improved insulation
It isn't easy to insulate sash windows when your home is old and you have older sash window. This is usually due to the restrictions on planning or the difficulty in modifying the traditional windows without losing its charm. Secondary glazing is an excellent way to increase the insulation of your home. This involves adding a second piece of glass to the existing frame, adding an additional layer of insulation that will keep your property warmer for longer and reduce the cost of energy.
The additional pane of glass that is attached to the frame of the window serves as an insulator, trapping air and keeping the heat inside your home. The second pane also helps to reduce the noise that comes from outside. This is particularly useful when you live in an area where noise might be an issue. It can help keep your home peaceful.
It is important to know that, although secondary glazing will improve the insulation of your home however, it will not be as effective as double-glazed windows. This is because the space left between the two panes of glass doesn't provide the same amount of thermal efficiency as a true double-glazed window.
We provide a variety of secondary glazing options that are that are specifically designed to fit your original sash windows and the requirements of your home. We can create secondary glazing that opens alongside the original sash windows, allowing you the benefits of increased efficiency of energy without having to give up your beautiful heritage windows.
This type of solution is popular among homes and listed buildings in conservation areas. It allows you to enjoy improved energy efficiency without compromising the aesthetics and comfort of your home. By employing new techniques, such as vacuum double glazing, we can achieve the highest level of insulation while still allowing the sash windows to be opened.
We can also offer various decorative finishes that match your existing windows, and improve the overall appearance of your home. This includes shutters, blinds and curtains. They all can improve the thermal performance of your home by acting as an additional barrier to stop cold air from getting in.
Reduced noise
Many homes are not complete without sash windows. They can be noisy and draughty. One way to improve the insulation of sash windows is by installing secondary glazing. This is a low-cost solution that can boost thermal efficiency and decrease outside noise. It can also be an excellent option for older homes, since it keeps the original design and protect them from burglars.
There are a myriad of styles and sizes of sliding secondary glazing, so you can choose the ideal suitable for your home. Fixed inserts are frames made of aluminium that can be put in your existing sash window. They can be fixed permanently or semi-permanently according to your requirements. They are a great DIY option for homeowners who wish to do their own home improvements.
A wide range of glass is available, including toughened safety glass and laminated acoustic glass. Acoustic glass can be used as secondary glazing to reduce outside noise. It can also increase the privacy of your home. This is particularly crucial if you live near a busy road, or in another noisy location.
Secondary glazing can dramatically reduce noise pollution and make it easier to relax and enjoy your home. This is also a great idea for those who have pets or children, as it can lower the amount of noise entering your home. In addition, it helps to prevent external sounds from disturbing your sleep cycle.
If you reside in a historic or listed home, it may be impossible to install new double-glazed windows without changing the original design of your home. But, you can increase the energy efficiency of your sash windows with secondary glazing. It's a cost-effective and durable solution that can provide several benefits, such as less noise, increased security, and increased heat retention.

The greatest benefit of secondary glazing is it can be installed in your existing sash windows which allows you to keep the charm and character while increasing your home's insulation and energy efficiency. It's also less expensive than replacing your entire windows with new sash windows.
Improved aesthetics
An excellent option to replace your windows with sash by installing double glazing, secondary glazing can be added to create a second pane of glass within the frame. This creates an insulating barrier that significantly reduces heat loss, and increases the efficiency of the house. It also reduces the noise from the outside, creating a peaceful environment. It's also a cost-effective way to improve the insulation of your home without altering the appearance of the home.
The addition of another layer of glass to your existing sash windows provides a great insulation level, reducing heat loss by as much as 60 percent. This means that your home will remain warmer for longer and save you money on your energy bills in the long run. The secondary glazing will reduce condensation and black mould as it prevents moisture from getting into the window frames made of wood.
There are a myriad of secondary glazing systems that are suitable for different sash window types. Some systems have a sash which can be opened and shut, while others are fixed or are only open for ventilation. There are timber sash windows that do not require a mullion or transom which makes them perfect for listed and historic homes. There are a variety of colors and finishes available to ensure you find the perfect style for your home.
One of the main benefits of secondary glazing is that it doesn't alter the appearance of your sash windows, so it's ideal for historic or period homes where like-forlike replacements aren't an alternative. It's a popular option for those who reside in conservation areas or listed structures where the windows of their home are limited.
The small sightlines of secondary glass are another benefit, as they don't obstruct the view of your original sash windows. This is an excellent option for homeowners seeking to upgrade their existing windows to reduce noise pollution and increase energy efficiency.
Reduced condensation
Condensation is a typical issue with windows made of sash. It occurs when warm air inside the house faces the cold exterior of the window, causing droplets of water to form. This can lead to damp and mould problems in the house. Secondary glazing can alleviate this issue by forming an additional layer of insulation that prevents heat transfer between the original window to the room. This can help you keep your home warmer longer, using less energy and reducing heating bills.
The addition of an additional glass pane also enhances the acoustic properties of windows with sash. It decouples the movement of the sash from the frame, reducing resonance between the two and restricting sound leakage. The secondary pane can be made more acoustically efficient by using acoustic laminated glass or a thicker glass.
Secondary glazing for windows in sash is not double glazing and doesn't require the removal of the old window. Instead, it adds a new pane of glass to the existing window frame. This makes it a great option for listed homes and historic buildings in which it can be difficult or impossible to install new double-glazed windows.
Secondary glazing for windows made of sash is available in a variety of different styles, including vertical sliders and hinged casements. These are a popular option for listed buildings because they can be installed without the use of transoms or mullions, keeping the style of the window as it was originally. Both styles can be installed with a lift-out facility for easy cleaning and maintenance.
For homes that don't require regular ventilation, or where opening the original sash windows could pose a risk, a fixed secondary glass option is available. These can be fitted with a stay that will keep them in a pre-determined minimum level, eliminating the need to open manually them. In such instances it is recommended to keep track of the humidity levels with a humidistat. Then, you can take steps to reduce the amount of moisture within the building. This could include enhancing the ventilation system and installing a humidifier.