Our bespoke secondary glazing is a practical and effective way to improve the thermal performance, comfort, and acoustic insulation of your existing windows without replacing them. Installed discreetly on the inside of your existing frames, secondary glazing provides an additional barrier against heat loss, external noise, and draughts while preserving the original appearance of your property.
Ideal for period homes, listed buildings, and properties within conservation areas, secondary glazing allows you to enhance energy efficiency without compromising the character of your windows.
At ERW, every secondary glazing unit is supplied to your chosen specifications, ensuring a precise fit and seamless appearance. Available in a range of styles, including vertical sliders, horizontal sliders, hinged units, fixed panels, lift-out units, and arched designs, our bespoke solutions can be tailored to suit almost any window configuration.
Finished in a choice of RAL colours, our secondary glazing is designed to integrate discreetly with your existing windows while delivering exceptional long-term performance.
Secondary glazing is an ideal solution where replacing original windows is not practical or permitted, helping to preserve the character of historic properties while improving comfort and performance.
By creating an additional insulating barrier, secondary glazing helps reduce heat loss, improve thermal performance, and lower energy bills throughout the year.
Secondary glazing can significantly reduce external noise, creating a quieter and more comfortable living environment, particularly for homes near busy roads or urban areas.
Every secondary glazing unit is manufactured to your chosen measurements, ensuring a perfect fit and minimal visual impact on your existing windows.
Secondary glazing is an additional glazed panel installed on the inside of an existing window. It improves insulation, reduces noise, and enhances comfort while preserving the original external appearance of the property.
Secondary glazing creates an insulating air gap between the original window and the internal glazed panel. This helps reduce heat transfer, minimise draughts, and dampen external noise entering your home.
Yes. Secondary glazing is often a cost-effective alternative to replacing windows, particularly for period properties and listed buildings where preserving original features is important.
Yes. Secondary glazing can significantly reduce the amount of external noise entering your property, making it particularly beneficial for homes located near roads, railways, or busy urban areas.
While it cannot eliminate condensation entirely, secondary glazing can help reduce condensation by improving the internal surface temperature of your existing windows and reducing cold spots.
Absolutely. Secondary glazing helps minimise heat loss and improve thermal insulation, making your home more energy efficient and comfortable throughout the year.
Yes. Secondary glazing is widely used in listed buildings and conservation areas because it improves performance while preserving the original appearance of historic windows, subject to any relevant permissions where required.
In most cases, internal secondary glazing does not require planning permission. However, requirements can vary for listed buildings and conservation areas, so it’s always advisable to seek professional guidance.
Double glazing replaces the existing window with a sealed glazed unit, whereas secondary glazing adds an independent glazed panel to the inside of the original window. Secondary glazing is often the preferred solution for heritage properties where retaining original windows is important.
We are trusted by homeowners for creating beautiful, bespoke timber windows, doors and outdoor living products.
All the staff at ERW have been utterly amazing – from the start of the project, from the general enquiries, to the fitting and installation . I couldn’t recommend this company high enough !
Thank you all so much!
A. W-T, Morpeth
All your staff are very friendly, polite & efficient. We are really please with our new windows (no draught & a lot quieter). They look very smart & in keeping with our old house.
Mr & Mrs B, Stokesley
The work of installing our double glazed units has finished and my wife and I want to tell you what a pleasure it was to have the installers working on that job. They had humour, application, care, consideration and skill and we much enjoyed their time with us. We have thanked them but felt it was important for you to know how grateful we are.
Mr & Mrs W, Eaglescliffe
Thank you for proving excellent service through the planning and design of the windows, from following through with the planning authority to securing an appropriate outcome and faultless installation. Your staff polite, respectful and highly skilled, thank you again, myself and my tenants are delighted.
Mrs R, Stokesley
Beautifully Crafted Timber Casement Windows Our bespoke casement windows combine traditional timber craftsmanship with modern performance, making them a popular choice for both period and contemporary properties. Manufactured to your exact specifications, every window is designed to enhance your home’s appearance while delivering exceptional energy efficiency, security, and durability. Inspired by classic Tudor and Georgian […]
Find out MoreMade-to-Measure Secondary Glazing Our bespoke secondary glazing is a practical and effective way to improve the thermal performance, comfort, and acoustic insulation of your existing windows without replacing them. Installed discreetly on the inside of your existing frames, secondary glazing provides an additional barrier against heat loss, external noise, and draughts while preserving the original […]
Find out MoreExpert Sash Window Repairs Our professional sash window repair service helps restore the beauty, performance, and longevity of traditional timber sash windows without the need for full replacement. Whether your windows are suffering from rotten timber, broken sash cords, draughts, or damaged glazing, our experienced craftsmen can return them to excellent condition while preserving their […]
Find out MoreHigh-Performance Double Glazed Timber Sashes Our energy efficient double glazing windows are designed to improve the thermal performance of traditional timber windows while preserving the character of your property. By upgrading existing sash windows with high-performance double glazed timber sashes, you can enjoy greater comfort, reduced heat loss, and lower energy bills without the need […]
Find out MoreYou can reach a member of the team by calling 01642 456167 or emailing info@erwltd.co.uk and we will get back in touch.
Alternatively, you may wish to browse our range of brochures and guides.
Contact Us Request our BrochureBrochure Download
We're not able to carry out installations in your postcode area, however, we can still design and create your door, and you can liaise with a local fitter in your area to install it.
Close