To improve performance of existing sash windows, secondary glazing can be installed discreetly to the inside of frames, providing an extra layer of insulation that keeps your home warmer in winter and cooler in summer.
In Grade I and Grade II Listed buildings and conservation areas where changes and upgrades to windows are not possible, our bespoke secondary glazing (including slim double glazed units) can reduce heat loss by up to 65% and noise levels by up to 80%. Adding additional windows also slashes a building’s CO2 emissions and enhances security by providing a barrier against unwelcome guests. All whilst preserving the character and charm of your property.
Our secondary glazing units are custom manufactured to your specifications for easy installation and available in the following styles:
All units are designed for easy cleaning and come finished in your choice of over 200 RAL colours.
We have been well satisfied with the work done by ERW. From our first meeting when we turned up at the showroom without prior booking to the final fitting we have been well looked after. The two installers were punctual, tidy and did an excellent job and responded positively to questions and took pride in their work.
Mr & Mrs T, Darlington
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
I just wanted to say a big thank you for a job really well done. All your staff are helpful and the team carried out the installation were tidy and caused minimal disruption. Thank you!
Mr & Mrs N, Eppleby
Many thanks to ERW Joinery Ltd, our home has been transformed. The quality and installation has exceeded our expectations. The work of your installers has been exemplary, nothing has been a problem and their care and attention to detail is first class. We would recommend you to anyone.
Dr & Mrs M, Ponteland
Tasteful, timeless, transcendent. For kerb appeal combined with performance, wooden casement windows are in a class of their own. Inspired by classic Tudor and Georgian window designs, our timber casement windows are manufactured to deliver the charm and character of period windows whilst meeting the demands of 21st-century living. Available in a range of styles […]Find out More
To improve performance of existing sash windows, secondary glazing can be installed discreetly to the inside of frames, providing an extra layer of insulation that keeps your home warmer in winter and cooler in summer. In Grade I and Grade II Listed buildings and conservation areas where changes and upgrades to windows are not possible, […]Find out More
The charm and character that original sash windows bring to period buildings are qualities that can’t be replaced. But they can be restored. Request a copy of our Renovation Brochure here With a long history of sash window restoration on period properties, listed buildings and within conservation areas, ERW offers both the specialist experience and […]Find out More
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.