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Secondary Glazing SpecialistsWhat is Secondary Glazing? A Complete Guide for Homeowners
If you live in an older property or a listed building, you may struggle with draughty windows, noise pollution, or high energy bills. Replacing your windows might not be an option, but secondary glazing provides an effective alternative.
This guide covers everything homeowners need to know about secondary glazing—from how it works to its benefits and installation options.
What is Secondary Glazing?
Secondary glazing is a discreet, internal window installed on the inside of your existing windows. Unlike double glazing, which replaces your original window, secondary glazing allows you to retain your existing frames while adding a second layer of glass. This creates an insulating barrier that improves energy efficiency, reduces noise, and enhances security.
How Does Secondary Glazing Work?
By trapping a layer of air between the original window and the secondary glazing, this system helps reduce heat loss, minimise external noise, and prevent draughts. The air gap acts as an insulating barrier, reducing heat transfer in winter and keeping your home warmer.
Key Benefits of Secondary Glazing
- Improved Energy Efficiency – Reduces heat loss, helping to lower heating bills.
- Noise Reduction – Significantly reduces external noise, ideal for homes near busy roads or airports.
- Enhanced Security – Acts as an extra barrier against break-ins.
- Preserves Original Windows – Perfect for listed buildings where window replacement is restricted.
- Cost-Effective – More affordable than full window replacement.
Types of Secondary Glazing
There are various styles available to suit different window designs and homeowner needs:
- Opens like a door for easy access and cleaning.
- Available in single- or double-hinged designs for wider windows.
- Provides excellent insulation and security.
- Features horizontal or vertical sliding panels.
- Ideal for sash windows.
- Allows for ventilation while maintaining insulation.
- Fixed Secondary Glazing
- A permanent, non-opening panel.
- Best for windows where access is not needed.
- Offers maximum insulation and security.
- A removable panel for easy access and maintenance.
- Suitable for occasional access to the primary window.
- Provides good insulation without being a permanent fixture.
- Bespoke and Arched
- Custom secondary glazing units to fit windows that are curved or any non-standard shapes.
Is Secondary Glazing Right for Your Home?
Secondary glazing is a perfect solution for:
- Listed buildings and conservation areas – Retains the original windows while improving insulation.
- Period properties – Maintains the classic appearance of your home.
- Homes in noisy areas – Reduces noise from traffic, trains, or city environments.
- Energy-conscious homeowners – Helps reduce heating costs.
Installation: DIY or Professional Fit?
While DIY secondary glazing kits are available, professionally installed secondary glazing ensures a perfect, airtight fit for maximum performance. Professional installation also allows for custom-made solutions that match the aesthetics of your home.
Why is Secondary Glazing Worth Considering?
Secondary glazing is an excellent solution for homeowners looking to improve insulation, reduce noise, and enhance security without replacing existing windows. Whether you live in a listed building or simply want to make your home more energy-efficient, secondary glazing is a cost-effective and practical choice.
Considering secondary glazing for your home? Contact us today on 0114 308 0530 to explore your options.
Clearview Secondary Glazing
Clearview secondary glazing - the solution to significantly improved acoustic and heat insulation to your property, making your home or offices more comfortable, secure, greener and cost efficient to run. Achieved without the disruption of replacement windows, and without damaging the character of your building.
