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10 Things Everyone Hates About Secondary Glazing Sash Windows Secondary Glazing Sash Windows
Secondary Glazing For Sash Windows

Many homeowners are not able to add double glazing to their homes, either due to financial constraints or due to the fact that the building is listed and any modifications to the exterior are not permitted.

Secondary glazing is a fantastic alternative for sash window and can be installed several ways.

This product is a double-paned glass that can be placed inside the frame of your window. It is insulated and provides noise reduction, as well as stopping cold air from entering your home.

Fixed Inserts

There are many different types of secondary glazing that are available for Sash windows. Each offers a unique number of advantages, ranging from increased security to lower condensation. Which one is the best option for you?

The fundamental idea behind secondary glazing is the installation of an additional glass within your window frame. This adds a layer of insulation and noiseproofing to your home, enhancing its energy efficiency.

It's not always feasible to install double-glazed windows particularly if you live in a listed 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 great alternative in these circumstances. It can be set up fairly easily. It's a popular choice for those who want to update their period home without the need to replace the original sash window with a modern one.

There are many different options for secondary glazing on windows made of sash. Each one can be customized to fit into your existing frame. The proprietary systems typically feature painted aluminium frames that are made to fit within the depth of a staff bead on an existing sash window so that shutters and sills are still able to be used.

They can be equipped using a variety of installation methods that include glazing clips and Velcro. These offer a more aesthetic solution than screw-fixed units, and are ideally suited to windows that aren't required to be opened often. You can also opt for a fixed lift-out device 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 for improving existing windows made of sash. They are also extremely discreet and suitable for older buildings, conservation areas & listed properties. They can be fitted in the majority of cases without the need for external access because they are operated from inside.

They are simple to operate with a hand and can be opened wide or left partially open to allow for ventilation. They are very effective in getting rid of draughts, and they also have the benefit of removing harmful UV light. They can be used in combination with a flyscreen to keep out mosquitoes and other insects during summer months.

Our Trackglaze horizontal sliding system offers all the advantages of modern double glazing to your original Sash windows. It consists of PVC double sliding track that runs across all four sides of the cavity and a simple brush seal around each glass sheet and a finger pull angle handle to function as a hand, reducing bowing. It is available in kits of 1m or 2m of track and angle that can be put together to create bigger spans.

Secondary glazing can have a significant effect on noise reduction, specifically for road, rail and airport traffic. The inclusion of laminated glass or toughened glasses improves the acoustic performance. Standard secondary glazing can reduce outside noise to 52dB(Rw) and specialist glass like Stadip Silence Laminated Acoustic Glass can provide even greater levels of acoustic performances.


It can increase the efficiency of your home by keeping it warmer for longer and reducing reliance on central heating. It is cheaper than replacing the original sash window and can be installed without removing the existing frame.

Vertical Sliders

Secondary glazing is a cost-effective option that is often simpler to manage than a full window replacement. It is also suitable for Listed Buildings & Conservation Areas. It's the ideal option to replace windows made of sash in Suffolk & Essex with modern insulation benefits while retaining the character of older homes.

Vertical Sliders are designed especially for sash windows, where regular hinged panels don't work. They feature two secondary sashes which are secured to one sash above the other, inside an outer frame. They are supported by robust spring balances for ease of movement. The system is available as a 'face-fixed' (installed to the inside of the window) to improve thermal performance or a 'reveal-fixed version, which has a glass to glass cavity inside the window reveal, to ensure optimal sound quality.

They can be fitted with a variety of stops and handles to suit the homeowner's preferences by allowing the top or bottom pane to let in air or secured in an open position for additional security. They can also be fitted with an insulation bristle to block draughts.

The 'Choices' Imagine vertical slider secondary glass comes with all the authentic wood detailing you'd expect to see in a window covering from the past. It is available in a range of colors that are compatible with your sash. It's almost impossible to distinguish from original sash windows, since features like sash horns and traditional butt joints are incorporated into the design. It is available in various sizes and can accept glass up to 6.8mm to provide additional insulation against loss of heat. The tilt-in feature allows the sashes of each window to be hinged upwards on safety stays for easier cleaning.

Hinged Casement

Our single-pane secondary glass can be installed on sash windows of any design, including traditional box sash and casement. Our hinged units are manufactured with a secure multi-point locking system and can be supplied with a key lock handle. This combination ensures that the glass panel is securely locked in place and pulls tightly to the outer frame, forming a sealing to minimise heat loss. Hinged windows can be purchased as either top or side-hung and can also be constructed as double-glazed. Our double-glazed windows provide enhanced sound insulation and are available in 43dB, 47dB or 51dB.

Contrary to horizontal sash windows which have movable sashes that slide horizontally within the frame casement windows can open outwards and let in breezes from a variety of angles. They can also be opened from the top and bottom to offer controlled airflow. This is why they can improve airflow and provide an effective alternative to traditional windows with sash.

They are used in modern homes due to their slim "sightlines" that permit an unobstructed view. However, they can also be put in listed buildings since they do not require transoms and mullions. They are also a good choice for hard-to-reach areas because they can be opened with the flick of the handle.

The main drawback of this kind of window is that it could block large openings and may restrict the use of certain window treatments. They are difficult to clean, as they open outward. They also may require regular maintenance and care.

Lift Out Windows

Secondary glazing can be set up in a variety of ways and the price will vary depending on the thickness, type and materials you select for your frames and panes. UPVC windows are generally the least expensive followed by aluminium, and then wooden window frames. Specialized glass can also add to the price, as well as any extra features, such as security or sound reduction.

The complexity of the installation will impact the cost. The more complicated the installation, the longer and more labor-intensive it will be. This can also apply to historic properties with more complex sash windows that require specialized knowledge and expertise.

The best place to begin is to evaluate the condition of your current windows. You can get a precise estimate of the cost by having them examined by an expert.

Generally speaking, secondary glazing will have little impact on the overall look of your home. check over here -glazing has slim and distinct frame lines. This allows you to get the most efficient heat without compromising 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 releasing the catch on the secondary glazing panel and then lifting it vertically to a set point. This is ideal for windows that aren't used often and can be used to make it easier to access air conditioning in bay windows. You can use them to open the middle sash of a traditional sash Bay Window to create a symmetrical appearance.

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