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10 Wrong Answers To Common Secondary Glazing Sash Window Questions Do You Know The Right Ones?
How Secondary Glazing Can Improve Your Sash Window Insulation

If you're interested in the advantages of double glazing, but are unable to - or don't wish to - replace your existing windows Secondary glazing is an ideal solution.

It is a cost-effective solution that adds insulation and reduces draughts without altering the appearance of the house. It is also a possibility when it is stipulated in property deeds to retain original characteristics.

Improved insulation

If your home is older and you have sash windows, it can be difficult to make them as insulated as you would like. This is typically due to planning restrictions or the difficulty in modifying a traditional windows without compromising its beauty. Secondary glazing can be an excellent way to increase the insulation of your home. It involves adding a second piece of glass to the existing frame, providing an extra layer of insulation that will keep your property warmer for longer and reduce energy costs.

The glass pane that is added to the windows you already have serves as insulation, capturing air and heat inside your home. As well as this, the secondary pane helps to block out noise from outside. This is particularly beneficial when you reside in an area that could be extremely noisy, since it will help to keep the peace and quiet within your home.

It is important to note that even though secondary glazing can improve your home's insulation but it's not as effective as double-glazed windows. This is due to the gap created between the two panes of glass isn't as effective in providing the same thermal efficiency as a true double-glazed window.

For this reason, we provide a variety of bespoke secondary glazing options that are tailored to suit the original sash window as well as the specific needs of your property. We can even design secondary glazing that can be opened alongside the original sash window and give you the benefits of increased insulation without having to let go of your beautiful windows from the past.


This kind of solution is particularly preferred in listed buildings and homes within conservation areas, as it lets you enjoy the benefits of increased energy efficiency without compromising the appearance and feel of your home. Utilizing innovative methods, such as vacuum double glazing that can provide an extremely high amount of insulation while allowing the sash windows to be opened.

We also have various decorative finishes that can match your existing windows, and improve the overall look of your home. This includes shutters, blinds and curtains. They all can enhance the thermal performance of your home by acting as a barrier to stop cold air from entering.

Reduced noise

Many homes aren't complete without windows with sash. They can be noisy and drafty. One method to increase the insulation of windows in sash is to install secondary glazing. This is a cost-effective solution that can improve the efficiency of the heating system in your home and reduce outside noise. It can also be an ideal alternative for older homes because it preserves the original design and protect them from intrusion.

Sliding secondary glazing is available in a range of styles and sizes and styles, making it easy to find the best design for your home. Fixed inserts are frames made of aluminium which can be inserted into your existing sash window. They can be put in permanently or semi-permanently depending on your requirements. They are a great DIY solution for homeowners looking to do their own home improvements.

A wide selection of glass is available including toughened safety glass as well as laminated acoustic glass. Acoustic glass can be used in secondary glazing to reduce outside noise. It can also improve the privacy of your home. This is especially important if you live close to a busy road or in a noisy area.

Secondary glazing can cut down on the amount of noise pollution and allow you to enjoy your home. It's also a good idea if you have pets or children as it can reduce the amount of noise that enters into your home from outside. Additionally, it can help to prevent external sounds from disrupting your sleep cycle.

If you live in an historic or listed building, it may not be possible to install double-glazed windows without altering the design of your home. However, you can increase the energy efficiency of your sash windows with secondary glazing. It's a durable and cost-effective solution that comes with numerous benefits, including improved security, lower noise and increased heat retention.

The best thing about secondary glazing is that it can be incorporated in your existing sash windows which allows you to keep the charm and character while increasing the insulation and energy efficiency. It's also cheaper than replacing your sash windows with new ones.

Improved aesthetics

Secondary glazing is a fantastic alternative to replacing windows with sash. It adds a new glass pane inside the existing frame. This creates an insulating barrier that significantly reduces heat loss, and improves energy efficiency throughout the home. It also reduces noise levels from outside, creating peace. 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 sash window will provide a superior level of insulation, reducing heat loss by up to 60%. It keeps your home warmer for longer, and will save money over the long run. It can also help to reduce black mould and condensation because the secondary glazing prevents moisture from getting into the window frames made of wood.

There are a variety of secondary glazing systems that are suitable for various sash windows. For example, some systems include a sash that can be shut and opened, while others are fixed or open only to allow ventilation. There are also systems that don't require the use of mullions or transoms which makes them ideal for heritage or listed homes. There are see more and colours to choose from, so you can choose the right style to suit your home.

It's an excellent option for historic or period homes that aren't able to afford replacing their sash windows with similar replacements. It's also a popular choice for those who live in a conservation area or in a listed building where there are limitations on what can be done to the property's windows.

The thin sightlines of secondary glazing are another benefit, because they don't block the view of your original Sash windows. This is an excellent option for homeowners who are seeking to upgrade their current sash windows in order to reduce noise pollution and increase energy efficiency.

Reduced condensation

Condensation is a typical issue with sash windows. This occurs when warm air from the inside of the house meets the cold surface of the window which causes the formation of water droplets. This can cause damp and mould problems in the home. Secondary glazing can alleviate this problem by creating an additional layer of insulation which blocks heat transfer from the window and the room. This will allow you to keep your home warmer for longer with less energy use and saving money on heating bills.

A second layer of glass can also enhance the acoustic qualities of sash window. It decouples movement of the sash and the frame and reduces the resonance between the two. This helps to reduce sound leakage. Further improvements in acoustics can be made by using the thicker or acoustic laminated glass in the second pane.

As opposed to double glazing secondary glazing for windows, sash window does not require the removal of the existing window. Instead, it simply adds a second layer of glass to the window frame. This makes it a great option for listed homes and buildings with a heritage character, in which it can be difficult or impossible to install new double-glazed windows.

Secondary glazing for sash windows is available in a variety of styles. These include vertical sliders as well as hinged cases. These are the most popular choices for listed buildings because they can be placed without mulliations or transoms. This maintains the original appearance of the window. Both styles come with a lift-out facility to simplify cleaning and maintenance.

Alternatively, fixed secondary glazing can be installed for homes that do not need regular ventilation or where it may be dangerous to open the original sash windows. They can be equipped with a stay to hold them at a pre-set minimum position, avoiding the need to open manually the windows manually. In these situations it is recommended to check the level of humidity using the hygrometer, and make steps to reduce the amount of moisture within the building. This could include improving ventilation, installing a dehumidifier and addressing any leaks around the building.

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