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Glazing - Double & Single Fitters

Properties can lose heat through their windows, so double glazing and other energy-efficient glazing options can help reduce heat loss, improve comfort and lower energy use. Double glazing can also help reduce outside noise and may reduce condensation on the internal glass surface.

Double glazing uses two panes of glass separated by a gap to create an insulating barrier. It is available with a range of frame materials and glazing specifications. Low-emissivity glass has a thin coating designed to reduce heat transfer while still allowing light into the property.

Common frame materials include uPVC, timber, aluminium and composite. uPVC frames generally require relatively little maintenance, while timber frames offer a traditional appearance but usually need more upkeep. Aluminium frames are slim and durable, while composite frames combine different materials to provide particular performance and appearance characteristics.

Replacement windows can be more airtight than older frames, so ventilation also needs to be considered. Depending on the property and work being carried out, trickle vents or other forms of background ventilation may be required.

Period Properties and Conservation Areas

If you live in a conservation area or listed building, there may be restrictions on the windows and glazing you can install. Check with your local planning authority before replacing windows, particularly if the existing windows contribute to the character or historic significance of the property.

Some period properties may require replacement windows to match the appearance, proportions and materials of the originals. Depending on the building and planning requirements, options can include traditionally styled timber windows, secondary glazing or repairs to the existing frames.

Replacement Windows Cost

As a rough guide, replacing the windows in a typical three-bedroom terraced house may cost around £7,500. The final price will depend on the number and size of the windows, glazing specification, frame material and any additional installation work required.

Finding an Installer

In England and Wales, replacement windows must meet the relevant Building Regulations requirements. One option is to use an installer registered with an authorised Competent Person Scheme, who may be able to self-certify the work. If the installer is not registered with an applicable scheme, Building Control approval may be required.

You can use the free quote service on this site to compare detailed quotes from local window installers. Ask what products, installation work, removal of old windows and guarantees are included in each quote, and check customer feedback where available.

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