Enjoy a warmer, quieter and more energy‑efficient home with high‑quality secondary glazing from DD Windows York. Designed to improve the performance of your existing windows without altering their appearance, secondary glazing is the ideal solution for listed buildings, conservation areas, and homes where replacing original windows isn’t possible or desirable.
D&D Windows York are proud to work with Granada Glazing to provide high-quality secondary glazing solutions to help keep your home quiet, warm and secure.
Secondary glazing is the process of fitting a second pane of glass to the interior side of your existing window, forming an extra barrier that improves insulation and reduces noise. By adding this additional layer, heat loss is minimised and thermal performance is enhanced, helping to maintain a comfortable indoor temperature throughout the year.
It also provides impressive sound reduction, with the Granada bespoke secondary glazing system capable of cutting external noise levels by up to 80%. This makes it particularly well suited to properties in busy or high-traffic areas, as well as buildings where replacing original windows isn’t practical.
Overall, secondary glazing offers a practical and affordable way to upgrade performance while preserving your current windows, without the disruption of major structural changes.
What Is Secondary Glazing?
Secondary glazing involves installing a discreet internal window behind your existing one. This creates a sealed air gap that significantly improves thermal insulation, sound reduction, and security.
It’s a popular choice for:
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Period properties where original windows must be preserved
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Listed buildings with strict planning restrictions
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Homeowners wanting better insulation without replacing frames
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Busy urban areas needing noise reduction
Secondary glazing is fully reversible, making it a non‑invasive upgrade that protects the character of your home.
Benefits of Secondary Glazing
Improved Energy Efficiency
The additional pane creates an insulating barrier that helps retain heat and reduce draughts. This can lead to:
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Lower heating bills, a more comfortable home and reduced condensation
Exceptional Noise Reduction
Secondary glazing is one of the most effective ways to reduce external noise. Ideal for homes near Main roads, Railways, City centres and Flight paths
Many customers experience up to 50% noise reduction.
Enhanced Security
The extra internal panel adds another layer of protection, making it harder for intruders to gain access. Toughened glass options are available for added peace of mind.
Perfect for Listed & Conservation Properties
Because secondary glazing doesn’t alter the external appearance of your home, it is often approved where double glazing is not permitted.
Secondary Glazing for Listed Buildings in York
Many homeowners struggle with cold draughts and noise because they cannot replace their original windows. Secondary glazing is often the only approved solution for:
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Grade I listed buildings
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Grade II and II* listed homes
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Conservation area properties
It preserves the original window while dramatically improving comfort and performance.
KEY BENEFITS & FEATURES
80%
Acoustic Reduction
Our products can reduce noise levels by up to.
65%
Thermal Comfort
Our products can reduce heat loss by up to.
PAS24
Safe & Secure
An extra layer in security as well as options for:
80%
Carbon Offset
Vastly reduces CO2 emissions, becoming carbon neutral in just:
1 Year
Cost Effective
A simpler & more discreet option, cu ing costs by up to:
Our Secondary Glazing Styles
We offer a range of styles to suit different window types and property requirements.
Horizontal Sliding Secondary Glazing
Ideal for casement windows and wider openings. Smooth sliding panels allow easy access for cleaning and ventilation.
Vertical Sliding Secondary Glazing
Perfect for sliding sash windows. Designed to match the movement of traditional sash windows while improving insulation.
Hinged Secondary Glazing
A practical option for windows that require regular access. Hinged units open like a door for easy cleaning and maintenance.
Fixed Secondary Glazing
A cost‑effective solution for windows that don’t need to be opened, such as feature or decorative windows.
Why Choose DD Windows York?
Local Specialists
We’ve been installing windows across York and the surrounding areas for years, offering expert advice tailored to your property.
High‑Quality Materials
All our secondary glazing systems are made from durable aluminium frames and high‑performance glass.
Professional Installation
Our experienced team ensures a neat, discreet installation that blends seamlessly with your existing windows.
Competitive Pricing
We offer excellent value without compromising on quality, with solutions to suit a range of budgets.
How Secondary Glazing Works
Step‑by‑Step Process
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Survey & Measurement We assess your existing windows and take precise measurements.
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Custom Manufacturing Your secondary glazing is made to measure for a perfect fit.
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Installation The internal frame is fitted neatly inside your existing reveal.
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Finishing Touches We ensure smooth operation, clean lines and a discreet appearance.
Get a Free Quote for Secondary Glazing in York
If you want to improve comfort, reduce noise and preserve the character of your home, secondary glazing is the perfect solution. Contact DD Windows York today for friendly advice and a free, no‑obligation quote.
cONTACT uS
Remove, Replace, Relax
Give us a call to arrange your free measure and quote