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Secondary glazing offers the advantages of contemporary glazing solutions, such as heightened energy efficiency and draft prevention, all without compromising the integrity of your original external windows.

Secondary glazing presents an optimal solution when you are unable to replace your existing windows.

Secondary glazing is an additional layer of glazing installed on the inside of your existing windows. It is a cost-effective and efficient way to improve the insulation and soundproofing of your home or office. Secondary glazing is ideal for listed buildings where the windows are historic and can not be replaced.
split image showing three images of secondary glazing in front of sash window
Our made to measure secondary glazing systems are made from either timber or aluminium. Both material options come in a range of configurations to work in tandem with your existing windows. Such as vertical sliding, horizontal sliding, hinged in-wards, lift out, fixed and tilt & turn.
image showing a room with two sash windows and aluminium secondary glazing in front of each sash window

Secondary glazing offers a range of benefits

The installation of secondary glazing in your home offers a multitude of benefits. It’s important to note that this service is different from replacement double glazed windows, as it entails fitting an additional window internally, in front of the existing external sash or casement window. This approach is particularly advantageous if you live in a listed building, are constrained by planning regulations, or wish to maintain the authenticity of your historic property.
Secondary glazing in front of casement window in Central London
Here are some benefits of secondary glazing:

Thermal icon1. Improved Energy Efficiency

Secondary glazing can significantly improve the energy efficiency of your home or office by reducing heat loss through the windows. The additional layer of glazing creates a barrier that traps heat, preventing it from escaping. This means you can save on your heating bills and reduce your carbon footprint.

Soundproofing icon2. Enhanced Soundproofing

Secondary glazing also provides excellent soundproofing benefits. The additional layer of glazing acts as a sound barrier, reducing noise pollution from outside. This is particularly beneficial in urban areas where traffic noise and other external sounds can be a nuisance.

Security icon3. Increased Security

Secondary glazing can also enhance the security of your home or office. The additional layer of glazing makes it harder for intruders to break in, providing an extra layer of protection.

Install icon4. Easy Installation

One of the best things about secondary glazing is that it is easy to install. Unlike traditional double glazing, which requires the removal and replacement of your existing windows, secondary glazing is fitted on the inside of your existing windows. This means there is minimal disruption to your home or office, and the installation process is quick and hassle-free.

Cost Effective Icon5. Cost-Effective

Secondary glazing is a cost-effective alternative to traditional double glazing. It is generally more affordable than the cost of replacing your windows and provides near similar energy-saving benefits. This makes it an ideal solution for homeowners and businesses looking to improve the insulation and soundproofing of their properties.
large bay window with secondary glazing in front of sash window

Here to help

Secondary glazing is an outstanding investment for those seeking to enhance the energy efficiency, soundproofing, and security of their home or office. It is easy to install, cost-effective, and provides an array of benefits that can significantly improve the comfort of your property. So why not contact us today to explore your options? We are specialists in period and conservation area glazing and are always happy to provide friendly, no-obligation advice on replacement windows, secondary glazing, and glazing related planning applications for all types of properties.

Make an enquiry using this form or email hello@sashed.com

I DO NOT live in a conservation areaI live in conservation areaI live in a listed buildingI'm unsure

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