Secondary Glazing For Sash Windows
Many homeowners are unable add double glazing to their homes due to financial constraints or because the structure is listed and any exterior modifications are prohibited.
Secondary glazing is an excellent alternative for sash window and can be installed in a variety of ways.
This is a double-paned glass that can be placed inside the frame of your window. It offers insulation and noise reduction, in addition to blocking cold air from entering the home.
Fixed Inserts
If you're considering secondary glazing for your sash windows there are several different styles you can pick from. Each has its own number of advantages, ranging from improved security to reduced condensation. Which is the most effective option for you?
The basic premise of secondary glazing is the installation of an additional glass within the window frame. This provides an additional layer of insulation and noiseproofing to your home, improving its energy efficiency.
However, it's not always possible to install new double-glazed windows to your property, especially if you live in a listed building or are subject to strict planning regulations which dictate what can and cannot be done to your exterior.
Secondary glazing is a fantastic alternative in these instances. It can be set up fairly easily. It's also a popular option for those looking to upgrade their home without the need to tear down the original windows with sash and replace them with modern ones.
There are many different options for secondary glazing on Sash windows. Each one can be customized to fit the frame you already have. Proprietary systems typically have painted aluminium frames which are designed to fit into the depth of a staff bead on an existing sash window, which means that sills and shutters are still able to be used.
They can be fitted using a variety of installation methods such as glazing clips and Velcro. These offer a more aesthetic alternative to screw-fixed units and are particularly suited to windows that aren't required to be opened frequently. Alternately, you can opt for an adjustable lift-out unit, which can be lifted out and put back in place with relative ease to allow windows to be opened.
Horizontal Sliders
Horizontal sliders are the most popular method of enhancing the appearance of a windows. They are also very discreet and are ideal for historic buildings, conservation areas, and listed properties. They can be fitted in the majority of cases without the need for access from outside since they operate from inside.
They can be operated by hand, and they can be left open or partially closed for ventilation. They are effective in keeping out draughts, and also filter harmful UV light. They can be combined with a flyscreen to keep out mosquitoes and other insects during the summer months.
Our Trackglaze horizontal sliding systems offer all the advantages of modern double glazing for your classic sash windows. It comprises of PVC double sliding tracks on the four sides of the cavity with the simple bristle seal that is placed around each glass sheet and finger pull angle handles to act as a handle and decrease bowing. It comes in kits of 1m or 2m of track and angle that can be stacked together to create bigger spans.
The acoustic advantages of secondary glazing are very significant and it can significantly enhance noise reduction from outside, especially road, rail & airport traffic. The addition of laminated glass or toughened glasses further enhances the acoustic performance. sliding sash window glazing reduces outside noise to 52dB (Rw) and specialist glass, such as Stadip Silence Laminated Acoustic Glass, can achieve even higher levels of acoustic performance.
It can boost the efficiency of your home by keeping your house warmer for longer and reducing reliance on 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 window or door frame.
Vertical Sliders
Secondary glazing is an affordable option that is typically easier to manage than full window replacement. It's also suitable for Listed Buildings & Conservation Areas. It's a great option to modernize traditional sash windows in Suffolk & Essex while retaining their originality.
Vertical Sliders were specifically designed for sash window applications where regular hinged panels would not be suitable. They feature two secondary sashes which are secured to one sash above the other, within an outer frame. They are supported by strong spring balances to allow for easy movement. The system is available as a face-fixed' (installed to the inside of the existing window) for improved thermal performance or a 'reveal-fixed version that has a glass-to-glass cavity inside the window reveal, for optimum sound quality.
They can be equipped with a variety handles and stop strips to accommodate the preferences of the homeowner and can be used to prop open the bottom or top pane to let in air or fixed in the closed position to provide security. They can also be fitted with an insulating bristle seal to prevent draughts.
Imagine vertical sliders in 'Choices' secondary glazing features all the timber-like details you'd expect from a period window treatment. It's also available in a variety of colors to match your existing sash. It's almost impossible to distinguish from original sash windows as details like sash horns and traditional joints are included in the design. It's available in a broad selection of sizes and will accept glass up to 6.8mm to add insulation to prevent loss of heat. A tilt-in option is available that allows the sashes to be hinged inward on safety stays to aid in cleaning.
Hinged Casement
The single-pane hinged secondary glazing can be incorporated into sash windows of any style including casement and traditional box sash. The hinged units we offer are made with secure multi-point locking and are available with keys and a handle for the lock. This combination ensures that the glazed panel is locked in place and pulls tightly against the frame, creating a seal to reduce heat loss. Hinged windows can be side-hung or top-hung, and they can also be double-glazed. Double-glazed windows provide better acoustic performances and are available in 43dB (for 47dB) or 51dB (for 51dB) or 47dB (for 49dB).
Casement windows are able open outwards and catch breezes at various angles. This is in contrast to a horizontal sash window, that has movable sashes inside the frame, which slide horizontally. They can be opened from the top and bottom for controlled airflow. They also improve airflow and are a great alternative to traditional sash window.
They are popular in modern homes due to their slim "sightlines" that permit an unobstructed view. However, they can also be incorporated in listed buildings since they do not require transoms and mullions. They're also a great option for areas that are difficult to access since they can be opened by the turn of a handle.
This kind of window could be a disadvantage because it could limit the use of certain window treatments. They can also be difficult to clean since they swing outward and may require regular maintenance and service.
Lift Out Windows
Secondary glazing can be put in with a variety of methods and the cost will differ depending on the type, thickness, and the materials you select for your panes and frame. uPVC windows are usually the least expensive followed by aluminium and finally wooden window frames. Specialized glass can also add to the cost and include additional features like security or noise reduction.
Another factor that affects the cost is the complexity of the installation. The more complicated the project is, the more time and labor it will require. This is especially applicable to older properties that have more intricate sash window designs.
Examining the condition of your windows in use is a good place to start. You can get an accurate estimate of the cost by having them inspected by a professional.
Generally speaking, secondary glass will have minimal impact on the overall look of your home. Modern FINEO double-glazing is slim and distinct frame lines. This allows you to get the most efficient heat without compromising aesthetics.
The horizontal sliding secondary glazing option is a popular choice because it permits easy access to the existing sash window to clean or for ventilation. These are also available with a tilt function, which can be activated by unlocking the catch and then lifting your secondary glazing panel vertically to a predetermined point. This is perfect for windows that don't get frequently opened. It can be used to provide air conditioning access in bay windows. You can even use them to open the middle sash on a traditional sash bay window to create a more uniform look.