If you want the benefits of double glazing, but replacing your windows isn’t an option, secondary double glazing is the perfect solution. Our secondary double glazing is a great choice because it:
- Fits seamlessly over your existing windows
- Helps to retain warmth
- Improves sound insulation
- Removes draughts from your existing windows
Secondary double-glazed windows are a great choice if you live in a listed building or conservation area where replacing windows is more difficult. They're available in a number of styles and are designed to match your existing windows, whatever the shape or size. They also offer very slim, unobtrusive sight lines on the inside and are virtually invisible on the outside.
Vertical sliding units are perfect if your home has original sliding sash windows, and they can tilt for easy cleaning. If you have horizontally-opening windows, we can install matching sliding units for between two to five casements. Or, if your home has single opening casement windows, we can make secondary double glazing to match.
Whatever the style, our secondary double-glazed windows are inconspicuous and blend in seamlessly with your home. As with every Anglian window, our secondary double glazing is bespoke and individually made by our team of skilled craftspeople to ensure you get exactly what you want.
Explore Window Styles
Our best-selling style is a versatile choice for your home.
Modern design technology with a clean and simple look.
Casement panels that maximise light and space in any room.
Tilt and turn
Designed for easy cleaning and superior ventilation.
The perfect blend of tradition and energy efficiency.
Add elegance and period grandeur to your home.
Explore Glazing Types
Our craftspeople make every double-glazed window individually to guarantee you the best in energy-efficiency and finish, whatever material and style you choose.
- Helps heat your home
- Made in our UK factory
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If you’re looking for additional warmth, security and noise reduction, our state-of-the art triple glazing is the perfect choice for your replacement windows.
- Our best windows yet
- 10 year guarantee
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We design every window with our three values in mind
Your security is of paramount importance, so at Anglian we manufacture windows to reflect this. Each window is made with robust multi-chambered uPVC with welded joints for added strength against forced entry.
All our windows achieve a high energy rating, with triple glazing guaranteeing maximum performance. With recent advancements in glass technology, our windows are more energy efficient than ever, saving you money on heating bills and helping to cut carbon emissions.
All our A-rated windows provide a sound protection level of 31dB, however our "Safe and Sound" range goes further for those living by busy roads, flight paths and railways.
Why Choose Anglian?
Our products offer superb quality and are backed by lengthy guarantees. We also support you throughout the process of replacing your windows with expert advice, fuss-free fitting and easy payment options.
We're confident that you'll enjoy your windows for many years to come, with guarantees for extra peace of mind:
- 10-year guarantee on uPVC, wood and aluminium
- 5-year guarantee on stained wooden windows
- 15-year guarantee on our Ultra gas filled units
- Additional Glass & Glazing Federation (GGF) protection