Benefits of secondary glazing for your home:
- 2, 3, 4 & 5 pane horizontal sliders
- Balance vertical slider
- Tilt-In balance vertical slider
- Lift out
- Slim line lift out
- Insert panel
- Hinged panel
- 4mm toughened low E glass (thermal insulation for reduction in heat loss)
- 4mm toughened obscure pattern
- 6.4 laminated safety glass
- 6.4 laminated low E safety glass (thermal insulation for reduction in heat loss)
- 6.8 acoustic glass (for reduction in noise pollution)
- 4mm toughened glass (standard)
- Reveal & face fixed systems
- White, brown, silver, RAL Codes finishes available (white as standard)
- Supply only available
- Templating available (installations only*)
- Installation service*
FAQs About Secondary Glazing Panels
Everything You Need to Know About Secondary Glazing for Your Home or Business
Secondary glazing is becoming an increasingly popular solution for improving energy efficiency, sound insulation, and comfort — especially in older properties where replacing existing windows isn’t an option.
At
Oxford Glass, we supply and install bespoke secondary glazing panels throughout Oxfordshire and beyond. To help you understand how secondary glazing works and why it’s worth considering, here are the most frequently asked questions from our customers.
1. What is secondary glazing?
Secondary glazing involves installing a discreet, fully independent pane of glass inside your existing window frame. It creates a sealed air gap that significantly improves insulation, reduces noise, and enhances comfort — without changing the external appearance of your property.
2. How is secondary glazing different from double glazing?
Double glazing consists of two panes of glass built into one sealed unit, usually replacing the entire window.
Secondary glazing, on the other hand, is an additional internal panel fitted to your existing windows. It’s a great option for:
- Listed buildings or conservation areas
- Period homes
- Properties where window replacement isn’t practical or allowed
3. What are the benefits of secondary glazing?
Secondary glazing offers several key advantages:
- Improved energy efficiency – helps retain heat and lower energy bills
- Noise reduction – reduces external noise by up to 80%
- Enhanced security – adds an extra physical barrier
- Condensation control – minimises moisture build-up on windows
- Cost-effective alternative – less expensive than full window replacement
4. Is secondary glazing suitable for listed buildings?
Yes — and that’s one of the main reasons homeowners choose it. Because secondary glazing is installed on the inside, it does not alter the external appearance of the building. It’s fully reversible and typically approved for listed properties and homes in conservation areas.
5. What types of secondary glazing are available?
At Oxford Glass, we offer a range of styles to suit your window type and interior design:
- Horizontal sliding panels – ideal for wide or sash windows
- Vertical sliding panels – perfect for traditional sash windows
- Hinged units – open like a door for easy access and cleaning
- Fixed panels – for windows that don’t require opening
- Lift-out panels – removable sections for occasional access
Each system is custom-made to ensure a perfect fit and seamless look.
6. Does secondary glazing really reduce noise?
Absolutely. By creating a sealed air gap between the two panes of glass, secondary glazing can cut noise by up to 45–50 dB, depending on the configuration. It’s especially effective for properties near busy roads, railways, or airports.
7. Will secondary glazing make my home warmer?
Yes — the additional glazing layer helps to reduce heat loss and draughts. It acts as an insulating barrier, keeping your home warmer in winter and cooler in summer. This can lead to noticeable savings on energy bills.
8. Can I open my windows once secondary glazing is installed?
Yes. Our systems are designed for easy access and ventilation. Sliding or hinged panels allow you to open, clean, and maintain your existing windows with ease.
9. Is secondary glazing noticeable once fitted?
Not at all. Modern systems are slimline, discreet, and available with colour-matched aluminium frames that blend beautifully with your existing décor. Many of our customers say they hardly notice it’s there — except for the improved comfort and quiet.
10. How much does secondary glazing cost?
Costs vary depending on the number, size, and style of windows, as well as your preferred frame and glass type. Secondary glazing is typically 30–50% cheaper than full double glazing. We offer free quotes and site surveys to give you an accurate price for your property.
Transform Your Home with Secondary Glazing
Whether you’re looking to reduce noise, improve insulation, or preserve the charm of your period property, secondary glazing is a smart and cost-effective solution.
