When it comes to improving the comfort, efficiency and acoustic performance of listed, historic and period buildings, secondary glazing is often the most effective and sympathetic solution available. At West Norfolk Glass, we are proud to be an Approved Installer of Granada secondary glazing, offering high-quality, made-to-measure systems that enhance your property without compromising its character
Energy efficient, discreet solutions for Listed and period properties
Granada secondary glazing is particularly well suited to listed buildings, conservation areas and period properties, where replacing original windows is either restricted or undesirable. With a wide product range and proven performance benefits, Granada secondary glazing systems provide a practical, elegant upgrade for homes across Norfolk, Cambridgeshire and Lincolnshire.
What is Granada secondary glazing?
Secondary glazing involves fitting an additional, independent glazing system to the inside of your existing windows. Granada secondary glazing systems are designed to sit discreetly behind original frames, preserving the external appearance of your property while delivering modern performance benefits. Unlike replacement windows, secondary glazing is often approved for use in listed buildings, as it is fully reversible and does not alter the historic fabric of the structure.
Why choose Granada secondary glazing?
Granada is one of the UK’s leading manufacturers of secondary glazing systems, known for their precision engineering, slim sight lines and exceptional thermal and acoustic performance. When installed by West Norfolk Glass, you benefit from both a premium
product and expert local installation. The key benefits of Granada secondary glazing are:
- Improved energy efficiency and reduced heat loss
- Significant noise reduction
- Minimal visual impact
- Ideal for listed and period properties
- Enhanced security and comfort
- Fully bespoke, made-to-measure systems
Improving energy efficiency in period properties
Older and historic buildings are notoriously difficult to heat efficiently. Single-glazed windows are a major source of heat loss, draughts and, consequently, increased energy bills. Granada secondary glazing creates an insulating air gap between the original window and the secondary pane. This trapped air dramatically reduces heat transfer, helping to keep warm air inside during winter and excessive heat out during summer. The benefits include:
- Reduced draughts and cold spots
- Lower heating costs
- Improved internal comfort
- Reduced condensation on original windows
For homeowners seeking energy efficiency improvements without replacing original windows, secondary glazing is one of the most effective upgrades available.
Outstanding noise reduction for quieter living
If your property is affected by road traffic, railways, town centres or other external noise, Granada secondary glazing can make a transformative difference. Secondary glazing is widely recognised as one of the best solutions for noise reduction, often outperforming double glazing. Granada secondary glazing systems can reduce noise levels by up to 80 per cent, depending on configuration. This makes them ideal for:
- Homes near busy roads
- Town and city centre properties
- Period homes with original sash windows
- Bedrooms, home offices and living areas
The result is a noticeably calmer, quieter indoor environment – without altering the exterior of your property.
Secondary glazing for listed and conservation properties
Planning restrictions can make window replacement challenging or impossible in listed buildings and conservation areas. Granada secondary glazing can often provide a solution that meets regulatory requirements gaining approval because:
- No external alteration to the building
- Original windows remain intact
- Fully reversible installation
- Slim, unobtrusive internal frames
At West Norfolk Glass, we are experienced in working with sensitive and historic properties and can advise on the most appropriate Granada secondary glazing system for your building.
Granada secondary glazing product range
Granada offers a wide range of secondary glazing styles to suit different window types and practical needs. All systems are manufactured to measure for a precise fit. Popular Granada secondary glazing systems include:
- Horizontal sliding units Ideal for casement windows, allowing smooth operation and easy ventilation.
- Vertical sliding units Designed to mirror the function of traditional sash windows.
- Hinged secondary glazing Perfect for easy access to original windows, cleaning and ventilation.
- Lift-out panels – A simple, removable solution for occasional access or seasonal use.
- Fixed units Maximum thermal and acoustic performance for windows that don’t need opening.
West Norfolk Glass can help you to choose the right system based on your window style, usage and performance priorities.
Why choose West Norfolk Glass for secondary glazing?
As an Approved Installer of Granada secondary glazing, West Norfolk Glass meets the manufacturer’s standards for quality, accuracy and installation expertise. Established as a local, family business in 1967, with almost 60 years’ experience, we offer:
- Expert advice tailored to your property
- Precise measuring and professional installation
- High-quality Granada products
- Local, trusted service
- Glazing solutions suitable for listed and period buildings
- We take pride in delivering installations that are discreet, effective and built to last.
Enhanced comfort without compromise
Granada secondary glazing offers a smart, sensitive way to modernise traditional properties. Whether your priority is energy efficiency, noise reduction or preserving architectural character, secondary glazing delivers measurable improvements without changing what makes your home special.
