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Secondary Glazing For Sash Windows

Many homeowners are not able to install new double glazing on their homes due to financial constraints or because they reside in listed buildings that restrict any exterior modifications.

Secondary glazing is a fantastic alternative to sash windows repair windows. It can be installed several ways.

This is a double-paned glass that fits inside the frame of your window. It offers insulation and noise reduction, while blocking cold air from entering your home.

Fixed Inserts

If you're thinking of secondary glazing for your sash windows there are many different styles to pick from. Each offers a unique number of advantages, ranging from improved security to reduced condensation. But which is the best option for you?

The principle behind secondary glazing is to install an additional pane of glass inside your existing window frame. This adds an additional layer of insulation and noiseproofing to your home, increasing its energy efficiency.

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

In these instances secondary glazing is an excellent alternative that can be set up easily. It's a popular choice for those who wish to update their period home without the need to replace window sashes the original sash window with an updated version.

There are a number of different systems available for secondary glazing sash windows, each of can be customized to fit your frame. Proprietary systems usually have painted aluminium frames that are designed to fit into the depth of a staff bead an existing sash window, so that shutters and sills are still able to be used.

They can be equipped with different installation methods such as glazing clips or Velcro. These offer a more aesthetic solution than screw-fixed units, and are particularly suited to windows that aren't required to be opened regularly. You can also choose an adjustable lift-out unit that can be lifted out and put back in place with ease, allowing your windows to be opened.

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 ideal for historic buildings, conservation areas, and listed properties. They can be fitted with the need for external access as they are operated from inside.

They can be operated by hand and can be left open or partially closed for ventilation. They are effective in preventing draughts, and they also filter harmful UV light. In summer they can be paired with a flyscreen in order to keep insects out and mosquitoes.

Trackglaze horizontal sliding systems give all the advantages of double glazing for the original window sash. It consists of PVC double sliding sash window locks track that runs across all four sides of cavity, a simple brush seal around each glass sheet and a handle for a finger pull angle to function as a hand, reducing bowing. It is available in kits with 1m or 2m of track and angle that can be stacked together to create bigger spans.

The acoustic benefits of second glazing are significant and it can significantly improve noise reduction from outside, particularly the airport, rail and road traffic. The inclusion of laminated glass or toughened glasses further enhances the acoustic performance. Secondary glazing that is standard can reduce outside noise to 52dB(Rw), and specialist glass like Stadip Silence Laminated Acoustic Glass can achieve even higher levels of acoustic performance.

It can improve the efficiency of your home by keeping it warmer for longer. This will decrease the use of central heating. It's much less expensive than replacing your sash windows and is installed in most cases without the need to take out the existing window or door frame.

Vertical Sliders

Secondary glazing is a cost-effective choice that is usually simpler to manage than a full window replacement. It is suitable for Listed Buildings & Conservation Areas. It's an excellent way to improve the look of traditional sash windows in Suffolk & Essex while retaining their character.

Vertical Sliders are designed especially for sash windows, where regular hinged panels aren't appropriate. The system has two secondary sashes that are fixed one above the other inside an outer frame. They are supported by spring balances that allow for easy movement. The system can be purchased as a 'face-fixed' (installed to the inside of the window) for improved thermal performance, or a'reveal fixed' version which is fitted with a glass to glass cavity inside the window reveal, for optimum audio-acoustic performance.

You can pick from a range of stop-strips and handles that meet your needs. They can be positioned in the closed position for extra security or propped open for ventilation on the glass's top or bottom. They can be equipped with an insulation bristle to stop draughts.

The 'Choices' vertical slider secondary glass comes with all the authentic wood detailing you'd expect in a period window. It comes in a variety of colours that will match your existing sash. It's nearly impossible to differentiate from the original sash windows as details such as sash horns and 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 give additional insulation against heat loss. The tilt-in option permits the sashes of each window to be hinged backwards on safety stays to facilitate cleaning.

Hinged Casement

Our single-pane secondary glazing is able to be fitted on sash windows in any design, including traditional box sash and casement. Our hinged units are constructed with a secure multi-point locking system and are available with keys and a handle for the lock. This combination ensures the glazed panel is held securely in place, and it pulls tightly against the frame, forming a seal to minimize heat loss. Hinged windows can be top-hung or side-hung, and they can also be double-glazed. Double-glazed windows provide better sound insulation and are available in 43dB (for 47dB), 51dB (for 51dB) or 47dB (for 49dB).

Casement windows are able to open to the outside and catch breezes at various angles. This is in contrast to a the horizontal sash window with movable sashes in the frame that slide horizontally. They can be opened both from the top and bottom to allow controlled ventilation. For this reason, they can help improve airflow and provide an effective alternative to traditional windows with sash.

They are typically employed in modern homes since they offer a few "sightlines" and unobstructed views, but can also be incorporated into listed homes because they do not require transoms or mullions. They can also be utilized in hard-to-reach places as they are easily opened by turning a handle.

This type of window can be a problem as it could limit the use of certain window coverings. They are difficult to clean as they can swing outward. They also may require regular maintenance and servicing.

Lift Out Windows

Secondary glazing can be put in using a variety ways and the cost will vary depending on the type, thickness and materials you select for your frames and panes. Upvc frames are the most expensive, followed by aluminium and then wooden sash windows frames. Specialised glass can also increase the price and include additional features such as sound reduction or security.

The complexity of the installation will also impact the cost. The more complex the project is, the more time and labor it will require. This is also true for historic properties with more intricate sash windows that require specialist knowledge and expertise.

Assessing the condition of windows in use is a good way to begin. A survey by an experienced professional will give you a precise estimate of what the price might be.

In general, secondary glazing will have little impact on the overall look of your home. Modern FINEO double-glazing has thin and discrete frame lines. This lets you improve thermal efficiency without sacrificing aesthetics.

The horizontal sliding sash window secondary glazing is popular because it allows easy access to the existing sash window to clean or for ventilation. These windows also come with a tilt function, which is activated by opening the catch and raising your secondary glazing panel vertically up to a certain degree. This is a great option for windows that don't open often and can be used to facilitate access for air cooling in bay windows. You can also use them to open the middle sash in a traditional sash Bay Window to create a symmetrical appearance.