Secondary Glazing For Sash Windows

Many homeowners are unable build new sash windows double-glazed windows to their homes, either because of financial constraints or because they reside in listed buildings that restrict any exterior changes.

Secondary glazing for windows made of sash is an excellent alternative and can be installed using a variety of methods.

It is made up of an additional pane of glass within the window frame that blocks cold air from getting into your home, as well as offering insulation and noise reduction.

Fixed Inserts

If you're considering secondary glazing for your sash windows, there are several different styles to choose from. Each style comes with each of its own benefits ranging from increased security to less condensation. Which one is the best option for you?

The principle behind secondary glazing is fitting an additional glass pane within the window frame. This adds an additional layer of insulation and soundproofing, which can greatly increase the efficiency of your home's energy use.

However, it's not always possible to add double-glazed windows to your property, especially if you live in a listed building or are subject to strict planning regulations that define what can and can't be done to your exterior.

Secondary glazing is an excellent alternative in these situations. It can be installed fairly easily. It's a popular choice for those looking to update their period 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 one of can be customized to fit the frame you have. Proprietary systems usually have painted aluminium frames that are designed to fit within the depth of a staff bead on an existing sash window meaning that shutters and sills can still be retained.

They can be equipped with a variety of installation methods such as glazing clips and Velcro. They offer a more stylish solution than screw-fixed units, and are particularly suited to windows that don't need to be opened often. You can also opt for a fixed lift-out unit that can be easily removed and reinstalled to open your windows.

Horizontal Sliders

Horizontal Sliders provide excellent thermal insulation and are the most sought-after solution for improving existing windows made of sash. They are also extremely discreet and are ideal for historic buildings, conservation areas & listed properties. They can be fitted in most cases without the need for access from outside since they operate from inside.

They can be operated with a hand, and they can be left open or partially opened for ventilation. They are effective at preventing draughts, and they also filter harmful UV light. They can be used in conjunction with a flyscreen to ward off mosquitoes and other insects during the summer months.

Our Trackglaze horizontal sliding systems offer all the advantages of modern double glazing to your original sash windows. It consists of PVC double sliding track on all four sides of cavity and a simple brush seal around each glass sheet and a handle for a finger pull angle to function as a hand and decrease bowing. It is available in kits comprising either 1m or 2m lengths of track and angle that can be butted together to make larger spans.

Secondary glazing can have a significant impact on noise reduction, especially for road, rail and airport traffic. The inclusion of laminated glass or toughened glasses further improves the acoustic performance. Secondary glazing is a standard feature that can reduce outside noise by 52dB(Rw) and specialist glass like Stadip Silence Laminated Acoustic Glass can achieve even higher levels of acoustic performance.

It can boost the energy efficiency of your home by keeping your house warmer for longer and reducing reliance 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 option that is usually more manageable than a complete window replacement. It's also suitable for Listed Buildings & Conservation Areas. It's the ideal option to replace windows with sash in Suffolk & Essex with modern insulation benefits while retaining the charm of older homes.

Vertical Sliders are specially designed for windows with sash openings where standard hinged panels aren't suitable. They come with two secondary sashes that are secured with one above the other, within an outer frame. They are supported by robust spring balances to allow for easy movement. The system can be installed on the inside of an existing window to ensure more efficient thermal performance, or it can be fitted with an opening between the glass and the frame to maximize acoustic properties.

You can pick from a range of handles and stop-strips to match your preferences. They can be positioned in a closed position for extra security or propped open for ventilation on the top or bottom glass. They can also be fitted with an insulation bristle to stop draughts.

The 'Choices' Imagine vertical slider secondary glass comes with the same authentic wood details you'd expect to see in a window covering from the past. It comes in a variety of colors that match your existing sash. It's nearly impossible to distinguish from the original sash double glazing window, with details such as sash horns & traditional butt joints being incorporated into the design. It's available in a wide selection of sizes and will accept glass up to 6.8mm to add insulation to prevent loss of heat. The tilt-in option permits the individual sashes of the window to be hinged inwards on safety stays for easier cleaning.

Hinged Casement

The single-pane hinged secondary glazing can be incorporated into windows in sash of any design, including traditional and casement sash. The hinged units we offer are made with secure multi-point locking and can be supplied with keys lock handles. This ensures that the glazed panel is held securely in place, and it pulls tight to the outer frame, forming a seal to reduce heat loss. Hinged windows can be purchased as either top or side-hung and are also available as double-glazed. Double-glazed windows are a great way to improve sound insulation and are available in 43dB, 47dB or 51dB.

Casement windows are able to open to the outside and catch breezes from different angles. This is different from a the horizontal sash window, with movable sashes in the frame, which slide horizontally. They can be opened from the top and bottom to allow controlled airflow. They can therefore increase airflow and offer a fantastic alternative to traditional sash window.

They are typically employed in modern homes since they have small "sightlines" and unobstructed views. However, they can also be used in listed properties due to the fact that they don't require transoms or mullions. They're also a good choice for hard-to-reach areas because they can be opened with the twist of the handle.

The main drawback of this type of window is that it could block large openings and may restrict the use of certain window treatments. They can also be difficult to clean since they swing outward, and could require regular maintenance and service.

Lift Out Windows

Secondary glazing can be installed with a variety of methods and the cost will vary depending on the type, thickness and the materials you select for your frame and panes. Upvc frames are the most expensive followed by aluminium, and wooden frames. Specialised glass, as well any additional features like security or sound reduction can also increase prices.

Another aspect that can affect the cost is the complexity of the installation. The more complicated the project will take longer and more labor will be required. This also applies to heritage properties with more intricate sash windows that require expertise and knowledge.

The best place to begin is to assess the condition of your current windows. The survey conducted by an experienced professional will give you a precise idea of what the costs could be.

In general, secondary glazing will have minimal impact on the overall appearance of your home. This is thanks to the fact that the modern FINEO double glazing has slim and discreet frame lines, which means you can attain thermal efficiency without compromising on aesthetics.

The horizontal sliding secondary glazing is popular due to its easy access to the sash window locks with key window to clean or for 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 to a set point. This is perfect for windows that don't get 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 in a traditional sash Bay Window to create a more symmetrical appearance.