10 Wrong Answers To Common Secondary Glazing Sash Windows Questions: Do You Know The Correct Answers?

10 Wrong Answers To Common Secondary Glazing Sash Windows Questions: Do You Know The Correct Answers?

upvc sliding sash windows  For Sash Windows

Many homeowners are unable build new double-glazed windows to their homes, either because of financial limitations or because they reside in listed buildings that prohibit any exterior modifications.

Secondary glazing for windows with sash is a great alternative that can be put in using a variety of methods.

This product is a double-paned window that fits inside your existing window frame. It provides 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 a variety of styles you can pick from. Each style comes with distinct advantages including increased security and less condensation. Which one is best for you?

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

It's not always practical to add double-glazed windows, particularly if you live in a listed property or if you are bound by strict planning regulations that dictate what can and cannot be done to your exterior.

Secondary glazing is an excellent alternative in these circumstances. It can be installed quite easily. It's also a popular choice for those looking to upgrade their home without having to tear down the original windows in sash and replace them with modern ones.

There are a variety of different systems available for secondary glazing sash windows, all of which is configurable to suit your frame. The proprietary systems are typically made of painted aluminum frames that fit the existing depth of the staff bead on the sash window. This allows sills and shutters to be retained.

They can be fitted with different installation methods such as glazing clips or Velcro. These units are more attractive than screw-fixed units and are ideally suited to windows that do not need to be opened frequently. You can also opt for a fixed lift-out unit that can be easily removed and reinstalled to open your windows.

Horizontal Sliders

Horizontal sliders are the most well-known way to improve existing windows. They are also very discreet and suitable for older buildings, conservation areas, and listed properties. In the majority of cases, they are installed without external access because they are operated from the inside.

They are simple to operate by hand and can be open wide or left partially open to allow for ventilation. They are effective at stopping draughts and also filter harmful UV light. They can be used in conjunction with a flyscreen to ward off mosquitoes and other insects during the summer months.

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

Secondary glazing can have a significant impact on noise reduction, specifically for road, rail and airport traffic. The use 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 deliver even higher levels of acoustic performances.

It can improve the energy efficiency of your house by keeping it warm for longer. This will decrease the use of central heating. 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 choice that is typically more manageable than a complete window replacement. It's also suitable for Listed Buildings & Conservation Areas. It's a great option to upgrade traditional sash Windows in Suffolk & Essex while retaining their character.

Vertical Sliders are specifically designed for sash windows, where regular hinged panels aren't suitable. The system is comprised of two secondary sashes that are secured one over one within an outer frame. They are supported by spring balances to allow for effortless movement. The system can be purchased as a 'face-fixed' (installed to the inside of the window) for increased thermal performance, or a'reveal fixed' version which comes with a glass to glass cavity inside the window reveal, for optimum sound quality.

They can be fitted with a variety of handles and stop strips to meet the needs of the homeowner, propping open either the bottom or top pane to let in air or fixed in an open position for additional security. They can also be fitted with an insulating bristle seal to stop draughts.


The 'Choices' Imagine vertical slider secondary glass has the same authentic wood details you'd expect in a period window. It comes in a variety of colors that will match your existing sash. It's nearly impossible to differentiate from the original sash windows, since details like sash horns as well as traditional butt joints are incorporated into the design. It is available in many sizes and can accept glass up to 6.8mm to add insulation to heat loss. A tilt-in option is also available allowing the individual sashes of the frame to hinge inward on safety stays to help with cleaning.

Hinged Casement

Our single-pane secondary glazing is able to be positioned on sash windows of any design, including traditional box sash and casement. Our hinged units can be supplied with a keylock handle, and are manufactured with multi-point locking. This combination ensures the glazed panel is held securely in place and is pulled close to the frame, creating a seal to minimise heat loss. Hinged windows can be top-hung or side-hung, and they can also be double-glazed. Double-glazed windows offer enhanced sound insulation and are available in 43dB (for 47dB) and 51dB (for 51dB) or 47dB (for 49dB).

Contrary to horizontal sash windows which have movable sashes, slide horizontally within the frame casement windows are able to open outward and capture breezes from various angles. They can also be opened from both the top and bottom to offer controlled ventilation. They also improve airflow, and offer a fantastic alternative to traditional sash window.

They are typically used in modern homes because they have small "sightlines" and unobstructed views. They can also be incorporated into listed properties because they don't require transoms or mullions. They can also be used in places that are difficult to reach since they can be opened simply by turning 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 because they swing outward and may require regular maintenance and service.

Lift Out Windows

Secondary glazing can be set up with a variety of methods and the cost will vary according to the type, thickness and materials you choose for your panes and frame. uPVC windows are usually the least expensive followed by aluminium, and then wooden window frames. Specialized glass can also add to the price and also any additional features like sound reduction or security.

The complexity of the installation will also affect the cost. The more complicated the project, the longer and more labor it will require. This is also true for heritage properties that have more complex designs for sash windows.

The best place to begin is to evaluate the condition of your current windows. A survey by a skilled professional will give you a precise idea of what the costs could be.

Generally speaking, secondary glass will have minimal impact on the overall look of your home. This is thanks to the fact that the modern FINEO double-glazing has sleek and subtle frame lines, so you can get the most efficient thermal performance without sacrificing aesthetics.

A popular choice of secondary glazing is horizontal sliding, which allows an easy access to your existing sash windows to clean or ventilation. They can also be purchased with a tilt function, which you can activate by unlocking the catch on the secondary glass panel and then lifting it vertically to a preset point. This is perfect for windows that aren't opened often. It can be used to provide air conditioning access to bay windows. You can also use them to open the middle sash of a traditional sash Bay Window to create a symmetrical appearance.