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15 Things You've Never Known About Sash Double Glazing
Why Upgrade Your Sash Windows to Double Glazed Windows?

Double glazing sash windows don't only improves energy efficiency and reduces noise pollution, but it also enhances the value of your home. The process preserves the historical features while ensuring compliance with the rules regarding heat loss, energy bills and security.

These windows cut down on the noise of cold and outside air while providing the same aesthetic appeal as your original sash window. The options for customizing these uPVC windows are endless.

Enhanced Insulation

Adding a second pane of glass to your sash windows creates an insulating barrier that drastically reduces heat transfer, making your home more comfortable and energy efficient. This upgrade also enhances soundproofing, creating a quieter living space.

A lack of insulation can result in higher energy costs for heating or cooling the home. Double glazing on sash windows reduces the energy use and helps you save money.

Double-glazed sash windows from us are made from top-quality materials that guarantee excellent thermal efficiency. Choose from a range of options, including uPVC and traditional timber. If you prefer the appearance of wood, opt for Accoya, a contemporary wood that is grown and treated in New Zealand, meaning it has a low impact on the environment. Both options are strong and resistant to moisture, ensuring high insulation and long-lasting performance.

If you live in a conservation area or listed building, you may need permission to build before installing sash double glazing. However, our experts are able to bypass these restrictions to protect the architectural integrity of your house while improving its thermal efficiency.

We can also add an extra layer of secondary glazing to your windows. This will provide a further insulating barrier which will reduce the loss of heat. This is typically less expensive than replacing the windows you have and can be installed without the need for a full restoration or new openings. Our secondary windows come with the warm edge spacer bar that is pre-desiccated and provides higher thermal efficiency when compared to aluminum alternatives.

Installing draught proofing can also increase the insulation of your home by decreasing air leakage. With a silicone seal, it helps to prevent cold air from entering your home during the winter months and warm air from escaping during summer.

It is possible to enhance any home with an draught-proofing method. This can be done on single and double sash windows. However, it is important to keep in mind that draughtproofing isn't as effective as double-glazing in reducing heat loss, so it should be considered as an alternative to sash window restoration or renovation.

Lower Energy Bills

A well-maintained sash window with proper seals can boost thermal efficiency and reduce energy bills considerably. Double glazing these windows will further improve their efficiency and enable you to reduce your energy bills without compromising quality of life or compromising the structural integrity of your house.

Double-glazed sash Windows are more energy efficient than single-glazed windows, because they feature two glass sheets that are separated with an air pocket. This increases their thermal efficiency. This air pocket minimises heat transfer, which could result in significantly lower energy bills and condensation.

Additionally, double-glazed sash windows can be fitted with the latest low-emissivity glass which enhances efficiency in energy use. This invisible layer is designed to reflect heat back into the room, thereby helping it to stay warmer during winter months and cooler in the summer.

Investing in energy-efficient sash windows will also have a positive impact on the environment. These windows will decrease your household's energy use and help to reduce the amount waste generated by you and your family. This will decrease your carbon footprint significantly which is great for those seeking to live a more eco-friendly lifestyle.

Double-glazed windows also provide enhanced soundproofing as they are compared to single-glazed windows. The gap between two layers of glass and the gas that is used to insulate it blocks out noise from outside. This will allow you to have a more peaceful, more comfortable home.

However, it's important to note that double glazing isn't always the best option for sash windows. Some homeowners might find it difficult to install an entirely new double-glazed window that matches the style of their windows, especially those who reside in historic or listed structures. It's important to choose an installer who is FENSA accredited and committed to providing top-quality products that maintain your home's unique character. Luckily, companies like Quickslide produce replacement uPVC sash windows that combine the traditional aesthetic with energy-efficient options for an unbeatable combination of style and functionality. This means you can upgrade your sash window with an uPVC solution that is easy to maintain and increase the resale value of your home.

Reduced Noise

Sash windows are attractive features in homes due to their beauty and the ability to let fresh air to enter. They aren't as soundproof, however, they are more so than other windows. People who live near busy roads and airports often have trouble to sleep due to noise. In addition, noise from neighbours and other homes can affect those who live in listed buildings or apartments.

However many homeowners are reluctant to upgrade their sash windows for fear of destroying their classic style. This is because installing double glazed sash windows requires a substantial amount of work and modification to the frame. Fortunately, there are now retrofit options that permit homeowners to keep their sash windows while adding modern noise reduction features.

Soundproofing of sash windows is dependent on a variety of factors. The frame's construction and material play an important part. Single-paned windows as well as those with poor sealing offer minimal noise protection. Double-glazed frames made of uPVC or wood can greatly reduce this issue. The thickness of the window glass is also crucial, since thicker glass offers more noise reduction.

In terms of the kind of frame, uPVC and aluminium are both widely used frames. window sash repairs are designed for efficiency and durability, but uPVC is slightly more energy efficient. Wooden frames are a viable option, with hardwoods such as Accoya being extremely robust and resistant to humidity.

To get the best results, double-glazed sash windows is best paired with other measures to soundproof the space. Acoustic laminated glass, for example can dampen the vibrations as well as absorb sound waves and close gaps around the frame.

It is crucial to consult experts and compare quotes when selecting the best double-glazing system for your home. They will be able assess your needs and suggest a customized solution to increase the efficiency of your energy and reduce noise. They are also familiar with building regulations and requirements regarding sash window upgrades, and will ensure that your new window meets all standards required.

Increased Value

The value of your house will increase when you upgrade your window sash to double-glazing. Double glazing increases thermal efficiency reduces heat loss, and reduces energy costs which makes your home more attractive to potential buyers.

It is important to keep in mind that the addition of double glazing will only enhance the value of your home if you use the best product. The installation of double glazing that isn't of good quality can increase your energy costs and decrease the value of your property. The best option is to choose uPVC sash window that is long-lasting and easy to maintain. They can be easily cleaned with an abrasive cloth and require minimal maintenance over the course of time.


There are various aspects that affect sash double glazing costs, such as the type of windows used and the material used to make the windows. Standard glazing is the cheapest. However other styles like acoustic windows can result in prices rising dramatically. The cost can also be affected by the finish you choose like wood grain or dual colours. Finally, the complexity of the installation process can increase labour costs and therefore the overall cost.

The sash window was originally made with astragal bars that were designed to separate the panes of glass. Double glazing is a possibility in modern sash windows while keeping the original features. This preserves the historical design of your home.

Vacuum double glazing is an excellent example of how this can be done, as it uses state-of-the-art technology to create a thin type of double glazing that fits into traditional sash windows without harming their historic appearance. This method, dubbed FINEO removes the space between windows to create a vacuum. It can then be installed in old sash Windows without damaging their structure.

Sash double glazing is beneficial for a variety of reasons, including its capacity to improve the efficiency of your energy and reduce noise within your home. It can also improve the comfort of your home, reduce condensation and improve aesthetics. It can also give you a return on investment, and help preserve historic features in your home.

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