Secondary Double Glazing
Reduce draughts, quieten unwanted noise and keep your home warm without replacing your existing windows by fitting Anglian's secondary glazing. We've manufactured secondary double glazing for 50 years and can match it to your existing windows to unobtrusively add comfort to your home. Perfect for listed buildings!
up to 50% off windows
- 10 year guarantee
- Established in 1966
- Made in Britain
If you want the benefits of double glazing but replacing your windows isn’t an option, secondary double glazing is the perfect choice. Our secondary double glazing has the following benefits:
- Fits seamlessly over your existing windows
- Helps to retain warmth
- Improves sound insulation
- Removes draughts from your existing windows
It’s a great solution if you live in a listed building or conservation area where replacing windows is more difficult.
Our secondary double glazed windows are available in a number of styles and are designed to match your existing windows, whatever the shape or size. They 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 glazing windows are inconspicuous and blend effortlessly with your home. As with every Anglian window, our secondary double glazing is bespoke and individually made by our team of skilled craftspeople.
Explore Glazing Types
Double Glazing
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
Find Out More
Triple Glazing
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
Find Out More
We design every window with our three values in mind
Security
Your security is of paramount importance, so at Anglian we manufacture windows to reflect this importance. Each window is made with robust multi-chambered uPVC with welded joints for added strength against forced entry.
Find Out More
Energy Efficiency
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 or heating bills and helping to cut carbon emissions.
Find Out More
Sound Reduction
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.
Find Out More
Why Choose Anglian?
We believe the main reasons that 42% of customers return to us to buy more products, can be summed up by the Benefits of Anglian Glazed Windows. 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.
Quality
Our experience and attention to detail means that you'll hardly notice your secondary double glazing as it efficiency helps to keep your home warm.
- Made from extruded aluminium alloy and 4mm glass
- BBA certified products
- Fast, professional installation
- Made in Britain
Guarantee
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
Our Accreditations
Customer Reviews
Windows FAQs
Find out more about double and triple glazing in our useful Window FAQs Section or read our articles below
Find out moreAnglian FAQs
Got questions about choosing Anglian? Find out why Anglian is the right choice for your replacement windows.
- Secured by Design Award for Anglian
- What should I expect from Anglian's Window installation process?
- Read our 50 year story
6 steps to your new windows
Our privacy policy explains how we use your data.
Home Inspiration From Anglian
Learn more about the latest glazing technology and gain inspiration on how to give your home a whole new look in our "Good to be Home" online magazine. We're brimming with ideas that you'll love and will help you to transform your home and garden.