Secondary Glazing For Sash Windows
Many homeowners are unable to install new double glazing on their homes, either because of financial limitations or because they live in listed buildings which prohibit any exterior modifications.
Secondary glazing for sash windows is a good alternative that can be put in using a variety of methods.
It is made up of an additional glass pane inside the window frame, which blocks cold air from getting into your home, as well as offering insulation and noise reduction.
Fixed Inserts
If you're thinking of secondary glazing for your sash windows there are many different styles to choose from. Each has its own set of advantages, from increased security to lower condensation. Which is the best choice for you?
The principle behind secondary glazing is to incorporate an additional glass into your existing window frame. This adds an additional layer of soundproofing and insulation which can dramatically improve your home's energy efficiency.
However it's not always feasible to add new double-glazed windows to your property particularly if you live in a listed building or are subject to strict regulations regarding planning that dictate what can and can't be done to your exterior.
In these instances, secondary glazing is a fantastic alternative that can be installed easily. It's also a popular choice for those who want to modernize their old home without having to tear down the original sash windows and replace them with contemporary ones.
There are a variety of different options for secondary glazing sash windows, each one of can be customized to fit the frame you have. The proprietary systems are typically comprised of painted aluminum frames that fit the existing bead depth on windows with sash. This allows sills and shutters to be retained.
They can be fitted with a variety of mounting methods that include glazing clips and Velcro. These units are more attractive than screw-fixed units and are ideal for windows that do not require to be opened frequently. Alternately, you can opt for an adjustable lift-out unit that can be lifted out and then put back in place with ease to allow your windows to be opened.
Horizontal Sliders
Horizontal Sliders provide excellent thermal insulation and are the most popular option for enhancing existing sash windows. They are also very discreet and suitable for older buildings, conservation areas & listed properties. They can be installed in most cases without the need for external access as they are operated from inside.
box sash window can be operated manually and can be left open or partially opened for ventilation. They are very effective in eliminating draughts and they also have the benefit of removing harmful UV light. In summer they can be paired with a flyscreen to keep insects out and mosquitoes.
Trackglaze horizontal sliding systems give all the advantages of double glazing for the original window sash. It is comprised of PVC double sliding track that runs across all four sides of cavity with a brush seal around each sheet of glass and a handle for a finger pull angle to act as a hand and decrease bowing. It comes in kits of 1m or 2m of track and angle that can be stacked together to create larger spans.
Secondary glazing can have a significant effect on noise reduction, specifically for rail, road and airport traffic. The addition of laminated or toughened glass further enhances the acoustic quality. Standard secondary glazing reduces outside noise to 52dB (Rw) and specialist glass, like Stadip Silence Laminated Acoustic Glass can provide higher levels of acoustic performance.
It can increase the energy efficiency of your home by keeping it warm for longer. This will reduce your reliance on central heat. It's 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 alternative that is usually more manageable than a complete window replacement. It's also suitable for Listed Buildings & Conservation Areas. It's a great option to improve the look of traditional sash windows in Suffolk & Essex while retaining their character.
Vertical Sliders were developed to be used in sash window applications where hinged panels of the regular kind aren't suitable. They feature two secondary sashes which are secured with one above the other, within an outer frame and are supported by robust spring balances for ease of movement. The system can be put on the inside of an existing window for better thermal performance, or it can be equipped with an opening between the glass and the frame to maximize acoustic properties.
They can be fitted with a variety of handles and stop strips to accommodate the preferences of the homeowner by allowing the top or bottom pane for ventilation or fixed in the closed position to provide security. They can also be equipped with an insulating bristle sealing device to stop draughts.
The 'Choices' Imagine vertical slider secondary glass features all the authentic wood detailing you'd expect to find in a period window treatment. It comes in a variety of colours that will match your existing sash. It's nearly impossible to distinguish from the original sash window, with details such as sash horns & traditional butt joints incorporated into the design. It comes in a variety of sizes and can take glass up to 6.8mm for additional insulation against heat loss. A tilt-in option is also available allowing the sashes to be hinged into the safety stays to aid in cleaning.
Hinged Casement
Our single-pane secondary glazing can be installed on sash windows of any style, including traditional box sash and casement. The hinged units we offer can be supplied with a keylock handle, and are made with multi-point locking. This ensures that the glazed panel is locked securely in place, and it pulls tightly against the frame, creating a seal to reduce heat loss. Hinged windows can be top-hung or side-hung, and they can also be double-glazed. Double-glazed windows provide better acoustic performances and are available in 43dB (for 47dB) and 51dB (for 51dB) or 47dB (for 49dB).
Unlike horizontal sash windows, with movable sashes that slide horizontally within the frame, casement windows can be opened outwards and let in breezes from a variety of angles. They can also be opened from the top and bottom for controlled ventilation. This is why they can increase airflow and offer an effective alternative to traditional windows made of sash.
They are commonly utilized in modern homes as they offer small "sightlines" and unobstructed views. However, they can also be fitted into listed homes because they do not require transoms or mullions. They can also be utilized in places that are difficult to reach since they are easily opened by turning a handle.
The main drawback of this type of window is that it could block off large openings and limit the use of certain window treatments. They are difficult to clean as they can swing outwards. They could also require regular maintenance and service.
Lift Out Windows
Secondary glazing can be installed using a variety methods. The cost will differ according to the choice of materials thickness, thickness, and the type of glass. UPVC frames are the cheapest expensive followed by aluminium, and wooden frames. Specialised glass, as well any additional features like security or sound reduction may also raise prices.
The complexity of the installation will also impact the cost. The more complex the project will take longer and require more labor it will require. This is especially true for heritage properties that have more complex designs for sash windows.
Assessing the condition of windows in use is a good place to start. You can get a precise estimate of the cost by having them checked by professionals.
In general secondary glazing can have an insignificant impact on the look of your home. Modern FINEO double-glazing has thin and subtle frame lines. This allows you to achieve thermal efficiency without compromising aesthetics.
The horizontal sliding secondary glazing option is popular because it allows easy access to the sash window to clean or for ventilation. These windows also come with a tilt function, which is activated by releasing the catch and lifting your secondary glazing panel vertically to a predetermined point. This is great for windows that aren't opened frequently and can be used to facilitate access for air conditioning in bay windows. You can also make use of them to open the middle sash on a traditional sash bay window to give a more symmetrical appearance.