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Secondary Glazing For Sash Windows

Many homeowners are unable build new double-glazed windows to their homes due to financial limitations or because they live in listed buildings that prohibit any exterior changes.

Secondary glazing is an excellent alternative to sash windows and can be installed in a variety of ways.

It is made up of an additional glass pane inside the window frame, which stops cold air from entering your home, as well as providing insulation and noise reduction.

Fixed Inserts

There are many different types of secondary glazing available for sash windows. Each has its own set of benefits, from increased security to lower condensation. Which is the most effective choice for you?

The fundamental idea behind secondary glazing is to incorporate an additional glass into your existing window frame. This adds an additional layer of insulation and noiseproofing your home, improving its energy efficiency.

It's not always practical to install double-glazed windows particularly if you live in classified as a historic property or if you are bound by strict planning regulations dictating what can and can't be done with your exterior.

Secondary glazing is a fantastic alternative in these situations. It can be installed relatively easily. It's a popular choice for those who want to update their period home without having to replace the original sash window a more modern version.

There are many different options for secondary glazing sash windows, each one of that can be adapted to fit your frame. Proprietary systems typically have painted aluminium frames that are designed to fit within the depth of a staff bead an existing sash window which means that sills and shutters can still be retained.

These can be fitted with different installation methods like glazing clips or Velcro. They provide a more attractive solution than screw-fixed units, and are ideally suited to windows that do not need to be opened regularly. You can also opt for a fixed lift-out unit that can be easily removed and reinstalled to allow you to open your windows.

Horizontal Sliders

Horizontal Sliders offer excellent thermal insulation and are the most popular solution to improve the performance of existing sash windows. They are also very discreet and are ideal for historic buildings, conservation areas & listed properties. They can be installed in most cases without the need for external access since they operate from inside.

They are easy to operate with a hand and can be open wide or left partially open for ventilation. They are very effective in stopping draughts and also have the added benefit of blocking harmful UV light. They can be used in conjunction 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 traditional sash window refurbishment window. It consists of PVC double sliding track on all four sides of the cavity and a simple brush seal around each sheet of glass and a finger pull angle handle to function as a hand and decrease bowing. It is available in kits comprising either 1m or 2m lengths of track and an angle, which can be joined to make larger spans.

Secondary glazing can have a significant effect on noise reduction, particularly for rail, road and airport traffic. The addition of laminated glass or toughened glasses further improves the acoustic performance. Standard secondary glazing reduces outside noise to 52dB (Rw) and special glass, like Stadip Silence Laminated Acoustic Glass can provide even more impressive levels of acoustic performance.

It can improve the energy efficiency of your home by keeping it warmer for longer and reducing reliance on central heating. It is much cheaper than replacing your original sash windows, and can be installed almost everywhere without the need to take out the existing window or door frame.

Vertical Sliders

Secondary glazing is a cost-effective option which is often more manageable than a complete window replacement. It is also suitable for Listed Buildings & Conservation Areas. It's a great option to upgrade traditional sash Windows in Suffolk & Essex while retaining their distinctive character.

Vertical Sliders are specifically designed for sash windows, where regular hinged panels aren't appropriate. They have two secondary sashes which are secured, one above the other, within an outer frame and are supported by robust spring balances to allow for easy movement. The system can be purchased as a 'face-fixed' (installed to the inside of the existing window) for improved thermal performance or a 'reveal-fixed version that comes with a glass-to-glass cavity, within the original window reveal, to ensure optimal sound quality.

They can be fitted with a variety of handles and stop strips to meet the needs of the homeowner, propping open either the bottom or top pane for ventilation or placed in a closed position for added security. They can also be equipped with an insulating bristle seal to prevent drafts.

The 'Choices' vertical slider secondary glass features the same authentic wood details you'd expect in a period window. It is available in a variety of colors that will match your existing sash window restoration. It is almost impossible to differentiate from the original sash windows, as features like sash horns as well as traditional butt joints are incorporated into the design. It's available in an extensive range of sizes and accepts glass up to 6.8mm to add insulation to prevent loss of heat. A tilt-in option is available to allow the sashes to be hinged towards the back of safety stays for easier cleaning.

Hinged Casement

Our single-pane hinged secondary glazing can be incorporated into windows in sash of any design, including traditional and casement sash. Our hinged units can be equipped with a keylock handle, and are made with multi-point locking. This will ensure that the glazed panel is locked in place and is pulled tightly to the outer frame, forming a sealing to minimise loss of heat. Hinged windows can be purchased as either top or side-hung and are also available by double-glazing. Double-glazed windows offer enhanced performance in terms of acoustics and are available in 43dB (for 47dB) or 51dB (for 51dB) or 47dB (for 49dB).

In contrast to horizontal sash windows which have movable sashes, slide horizontally within the frame, casement windows are able to open outwards and catch breezes from a variety of angles. They can also be opened from the top and bottom for controlled airflow. Because of this, they can help improve airflow and provide an effective alternative to traditional windows made of sash.

They are used in modern homes due to their slim "sightlines" that allow for an unobstructed view. However, they can also be incorporated in listed homes since they don't require transoms or mullions. They can also be used in areas that are difficult to access since they are easily opened by turning the handle.

This type of window can be a disadvantage because it could limit the use of certain window coverings. They are also difficult to clean as they open outwards, and may require regular maintenance and servicing.

Lift Out Windows

Secondary glazing can be set up in a variety of ways and the price will vary depending on the type, thickness, and materials you select for your panes and frame. Upvc frames are the most expensive, followed by aluminium and then wooden frames. Specialised glass can also increase the cost, as well as any additional features like security or noise reduction.

The complexity of the installation will also affect the cost. The more complicated the project is, the more time and labor-intensive it will be. This is also true for heritage properties with more complex sash windows that require expertise and knowledge.

Examining the condition of your windows that are in use is a good way to start. Having them surveyed by an experienced professional will give you an accurate estimate of what the cost could be.

Generally speaking, secondary glass will have little impact on the overall look of your home. Modern FINEO double-glazing is thin and subtle frame lines. This lets you get the most efficient heat without compromising aesthetics.

A very popular choice for secondary glazing is horizontal sliding, which gives easy access to existing sash windows for cleaning or ventilation. These are also available with a tilt feature which can be activated by opening the catch and then lifting the secondary glazing sash window glazing panel vertically to a specified degree. This is ideal for windows that aren't opened frequently and can be used to allow access to air cooling in bay windows. You can even use them to open up the middle sash on an old-fashioned bespoke sash windows bay window to create a more symmetrical look.