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20 Up-And-Comers To Follow In The Secondary Glazing Sash Windows Industry
Secondary Glazing For Sash Windows

Many homeowners aren't able to install double glazing to their house because of financial limitations or because the building is listed and any modifications to the exterior are forbidden.

Secondary glazing is a fantastic alternative to sash windows and can be put in various ways.

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

Fixed Inserts

There are many different types of secondary glazing available for Sash windows. Each has its own set of advantages, from increased security to less condensation. Which is the best choice for you?

The principle behind secondary glazing is to install an additional glass within the frame of your existing window. This provides an additional layer of insulation and noiseproofing to your home, enhancing its energy efficiency.

However, it's not always possible to install new double-glazed windows for your home particularly if you reside 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 situations, secondary glazing is a great alternative that can be installed easily. It's also a popular option for people looking to update their period property without having to tear down the original windows in sash and replace them with contemporary ones.

There are a variety of different options for secondary glazing sash windows, all of that can be adapted to fit your frame. Proprietary systems are generally constructed of painted aluminium frames that fit into the existing bead depth on windows with sash. This lets shutters and sills remain.

They can be fitted using a variety of installation methods, including glazing clips and Velcro. These units are more attractive than screw-fixed ones and are ideally suited to windows that do not require to be opened frequently. Alternatively, you can choose an adjustable lift-out unit that can be lifted and put back in place with relative 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 with sash. They are also quiet and are ideal for historic homes as well as conservation areas and listed property. They can be installed with the need for access from outside because they are operated from inside.

They are simple to operate by hand and can be open wide or left partially open for ventilation. They are effective at keeping out draughts, and also block harmful UV light. In summer, they can be used with a flyscreen to keep out insects and mosquitoes.

Trackglaze horizontal sliding systems offer all the advantages of double glazing for your original window sash. It comprises of PVC double sliding tracks on the four sides of the cavity and the simple bristle seal that is placed around each glass sheet, and angle handles that can be pulled by fingers to serve as handles and lessen bowing. It is available in kits comprising either 1m or 2m lengths of track and angle which can be butted together to create larger spans.

The acoustic advantages of secondary glazing are extremely significant and can dramatically improve noise reduction from outside, especially road, rail & airport traffic. The addition of laminated or toughened glass further enhances acoustic performance. Standard secondary glazing reduces outside noise to 52dB (Rw) and special glass, like Stadip Silence Laminated Acoustic Glass can deliver even more impressive levels of acoustic performance.

It can boost the energy efficiency of your house by keeping it warm for longer. This can reduce the use of 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 which is often more manageable than full window replacement. It is also suitable for Listed Buildings & Conservation Areas. It's a great option to upgrade windows made of sash in Suffolk & Essex with modern insulation benefits while retaining the charm of older homes.

Vertical Sliders were developed for sash window applications where hinged panels of the regular kind are not suitable. They feature two secondary sashes that are secured with one above the other, within an outer frame and are supported by sturdy spring balances for ease of movement. The system can be placed on the inside of a window to provide more efficient thermal performance or equipped with an opening between the frame and the glass for optimum acoustic properties.

sash window repairs manchester Repair My Windows And Doors can be equipped with a variety stops and handles to accommodate the preferences of the homeowner, propping open either the bottom or top pane to allow for ventilation or fixed in the closed position to provide security. They can be equipped with an insulation bristle to stop draughts.

The 'Choices' Imagine vertical slider secondary glass has the same authentic wood details you'd expect to see in a period window. It is available in a variety of colours that match your existing sash. It's difficult to distinguish from the original sash window with features like the sash's horns and traditional butt joints incorporated into the design. It's available in an extensive selection of sizes and will accept glass up to 6.8mm to add insulation to prevent loss of heat. The tilt-in feature allows the individual sashes of the window to be hinged upwards on safety stays to facilitate cleaning.

Hinged Casement

Our single-pane hinged secondary glass can be incorporated into sash windows of any style such as traditional and casement sash. The hinged units we offer can be supplied with a keylock handle and are manufactured with multi-point locking. This combination ensures that the glazed panel is securely locked in place and is pulled tightly to the outer frame, forming a seal to minimise loss of heat. Hinged windows are available either top or side-hung and can also be constructed as double-glazed. Double-glazed windows offer enhanced sound insulation and are available in 43dB (for 47dB) or 51dB (for 51dB) or 47dB (for 49dB).

Casement windows are able to open to the outside and catch breezes at various angles. This is unlike the horizontal sash window that has movable sashes inside the frame, which slide horizontally. They can also be opened from both the top and bottom to offer controlled ventilation. They also improve airflow, and are a great alternative to traditional sash window.

They are popular in modern homes due to their narrow "sightlines" which allow for an unobstructed view. However, they can also be incorporated into listed properties because they don't require transoms and mullions. They are also a good choice for hard-to-reach areas since they can be opened by the twist of a handle.


The primary drawback to this type of window is that it can block large openings, and could limit the use of certain window treatments. They are also difficult to clean as they open outwards, and may require regular maintenance and service.

Lift Out Windows

Secondary glazing can be installed in a variety of ways and the cost will differ according to the type, thickness and materials you select for your frames and panes. Upvc frames are the most expensive, followed by aluminium and then wooden frames. Specialized glass, in addition to any extra features such as security or sound reduction could increase the cost of windows.

The complexity of the installation will affect the cost. The more complicated the installation is, the more time and labor will be required. This is especially true for heritage properties with more intricate design of sash windows.

The best way to start is to assess the condition of your existing windows. You can get an accurate estimate of the cost by having them inspected by a professional.

In general secondary glazing can have little effect on the look of your home. This is due to the fact that modern FINEO double glazing is slim and discreet frame lines, which means you can attain thermal efficiency without sacrificing aesthetics.

The horizontal sliding secondary glazing option is popular due to its easy access to the sash 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 a great option for windows that aren't used frequently and can be used to make it easier to access air conditioning in bay windows. It is also possible to use them to open up the middle sash of the traditional sash bay windows to give a more symmetrical appearance.

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