The 10 Most Terrifying Things About Secondary Glazing Sash Windows
Secondary Glazing For Sash Windows
Many homeowners are not able to add new double glazing to their homes due to financial constraints or because they live in listed buildings which prohibit any exterior changes.
Secondary glazing is an excellent alternative for sash window and can be put in various ways.
It is made up of an additional pane of glass inside the existing window frame which stops cold air from entering your home, while also offering insulation and noise reduction.
Fixed Inserts
If you're thinking of secondary glazing for your sash windows, there are many different styles you can pick from. Each style offers its own set of benefits that range from increased security to reduced condensation. Which one is the best option for you?
The fundamental idea behind secondary glazing is to install an additional glass pane into your existing window frame. This adds an additional layer of insulation and noiseproofing your home, increasing its energy efficiency.
However it's not always possible to add double-glazed windows for your home, especially if you live in a listed structure or are subject to strict regulations regarding planning which dictate what can and can't be done to your exterior.
In these cases, secondary glazing is a great alternative that can be set up with relative ease. It's a popular choice for those looking to renovate their old home without having to replace the original sash window with a more modern version.
There are several different systems for secondary glazing on windows made of sash. Each system can be configured to fit into your existing frame. Proprietary systems are generally constructed of painted aluminum frames that fit the existing bead depth on a sash window. This allows sills and shutters to remain.
replacement sash windows can be equipped using a variety of installation methods such as glazing clips and Velcro. They offer a more stylish solution than screw-fixed units, and are ideally suited to windows that do not need to be opened frequently. You can also select an unfixed lift-out unit that can be easily removed and reinstalled to allow you to open your windows.
Horizontal Sliders
Horizontal Sliders provide excellent thermal insulation and are the most sought-after solution to improve the performance of existing windows made of sash. They are also quiet and ideal for historic properties, conservation areas & listed properties. 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 for ventilation. They are very effective in getting rid of draughts, and they also have the benefit of filtering out harmful UV light. They can be used in combination with a flyscreen to keep out mosquitoes and other insects during summer months.
Trackglaze horizontal sliding systems give all the benefits of double glazing for your original Sash window. It is comprised of PVC double sliding track on all four sides of the cavity with a brush seal around each glass sheet and a finger pull angle handle to function as a hand and reduce bowing. It is available in kits of 1m or 2m of track and angle that can be stacked together to create bigger spans.
Secondary glazing can have a significant effect on noise reduction, specifically for rail, road and airport traffic. The use of laminated glass or toughened glasses improves the acoustic performance. Secondary glazing that is standard reduces outside noise to 52dB (Rw) and special glass, like Stadip Silence Laminated Acoustic Glass can provide higher levels of acoustic efficiency.
It can increase the energy efficiency of your house by keeping it warmer longer. This will decrease the need for central heating. It is much cheaper than replacing your sash windows, and can be installed without the need to remove the existing window or door frame.
Vertical Sliders
Secondary glazing is a cost-effective option that is usually more manageable than a complete window replacement. It's also suitable for Listed Buildings & Conservation Areas. It's a great option to upgrade windows with sash in Suffolk & Essex with modern insulation benefits while retaining the traditional look of older homes.

Vertical Sliders are designed especially for sash windows, where regular hinged panels don't work. They feature two secondary sashes that are secured, one over the other, within an outer frame and are supported by robust spring balances to allow for easy movement. The system can be put on the inside of a window to provide more efficient thermal performance or equipped with an opening between the glass and the frame for optimum acoustic properties.
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 to allow for ventilation, or they can be fixed in a closed position for added security. They can also be equipped with an insulating bristle seal to stop drafts.
The 'Choices' Imagine vertical slider secondary glass has the same authentic wood details you'd expect in a period window treatment. It comes in a range of colors that will match your existing sash. It is almost impossible to differentiate from the original sash windows, since details like sash horns as well as traditional butt joints are integrated into the design. It's available in a broad variety of sizes and can accept glass up to 6.8mm to provide additional insulation against loss of heat. The tilt-in feature allows the individual sashes of the window to be hinged upwards to make it easier for cleaning.
Hinged Casement
Our single-pane secondary glazing is able to be fitted on sash windows of any style, including traditional box sash and casement. Our hinged units are constructed with secure multi-point locking and are available with keys and a handle for the lock. This combination ensures the glazed panel is held securely in place and pulls tight to the outer frame, creating a seal to minimise heat loss. Hinged windows can be purchased as either side or top hung and are also available as double-glazed. Double-glazed windows offer enhanced acoustic performance and are available in 43dB, 47dB and 51dB.
Casement windows are able open to the outside and catch breezes at various angles. This is in contrast to a horizontal sash window, with movable sashes in the frame that move horizontally. They can also be opened from the top and bottom for controlled airflow. For this reason, they can help improve airflow and are a viable alternative to traditional windows with sash.
They are typically utilized in modern homes as they offer a few "sightlines" and unobstructed views, but can also be used in listed homes due to the fact that they don't require mullions or transoms. They are also a good option for areas that are difficult to access as they can be opened by the twist of the handle.
This type of window can be a disadvantage because it could limit the use of certain window treatments. They are also difficult to clean because they swing outward and may require regular maintenance and servicing.
Lift Out Windows
Secondary glazing can be installed using a variety methods. The cost of installation will vary according to the choice of materials, thickness, and type of glass. UPVC frames are the cheapest expensive followed by aluminium, and then wooden frames. Specialized glass may also increase the cost and include extra features, such as security or sound reduction.
Another aspect that can affect the cost is the complexity of the installation. The more complicated the project, the more time and labor will be required. This is also the case for older homes that have more intricate designs for sash windows.
Assessing the condition of existing windows is a good place to begin. You can get an accurate estimate of the cost by having them checked by professionals.
In general, secondary glazing has a minimal effect on the look of your home. This is thanks to the fact that modern FINEO double glazing is sleek and subtle frame lines, which means you can get the most efficient thermal performance without sacrificing aesthetics.
The horizontal sliding secondary glazing is popular because it allows easy access to the sash window for cleaning or ventilation. They can also be purchased with a tilt function, which you can activate by unlocking the catch on the secondary glazing panel and lifting it vertically until you reach a predetermined point. This is perfect for windows that aren't frequently opened. It can also be used to allow air conditioning access to bay windows. You can also use them to open the middle sash on an old-fashioned sash bay window to create a more symmetrical look.