Secondary Glazing in Medway & Kent
Enhance the thermal efficiency and acoustic performance of your property without compromising its character with our discreet and high-performance secondary glazing.
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What Is Secondary Glazing?
Get Double Glazing Performance Without The Extra Hassle
Secondary glazing is the ideal choice for homeowners living in listed buildings, conservation areas, or properties where aesthetics must be preserved. By installing a slim, unobtrusive & professional-grade aluminium frame on the internal side of your existing windows, you can enjoy all the benefits of modern double glazing without the need for structural changes or planning permissions. Our units are engineered to be virtually invisible from the outside, ensuring your home retains its historic charm while gaining significantly improved comfort.
At Medway Windows & Doors, we specialise in the precision installation of Granada secondary glazing, the UK’s leading system. Each unit is custom-manufactured to the exact millimetre of your window reveal, ensuring a perfectly airtight seal. Whether you are dealing with draughty timber sashes or noisy street-facing casements, our secondary glazing provides a cost-effective and non-invasive upgrade that transforms the way your living space feels and sounds throughout the year.
25+
Years Experience
500+
Positive Reviews
10yr
Guarantee
Secondary Glazing Benefits
Why Install Secondary Glazing?
Upgrading your windows doesn’t always require a full replacement. Secondary glazing is often the most effective way to address the specific performance gaps found in single-glazed heritage properties.
Get A QuoteSuperior Thermal Efficiency
Drafty windows are one of the leading causes of heat loss in older homes. Our secondary glazing reduces heat loss by up to 65% which helps you maintain a consistent internal temperature, lower heating bills, and improve your home's carbon footprint.
Enhanced Internal Security
Our frames are built using high-strengh aluminium and fitted with toughened safety glass as standard, providing a near-unbreakable barrier to protect your family and possessions without the need for unsightly or heavy-duty modifications.
Unrivalled Acoustic Insulation
Secondary glazing creates an insulating air gap between the primary window and secondary unit, reducing noise levels by up to 80% which significantly outperforms standard double glazing, allowing you to enjoy peace and quiet even in the busiest of locations.
Condensation Management
By improving the thermal barrier, secondary glazing helps to equalise the temperature of the internal glass surface, reducing the likelihood of moisture buildup and dampness. When fitted with appropriate ventilation, our systems help manage airflow effectively, protecting your window frames and curtains from mould.
System Configurations, Glazing & Aesthetics
Customise Your Secondary Glazing
Frame Configurations
The functionality of your secondary glazing should match the operation of your existing windows to ensure easy access and cleaning. We offer a variety of opening styles to seamlessly match your interior.
Glazing Performance
We offer a range of specialist glass types to address your specific concerns, whether you are prioritising heat retention, absolute silence, or maximum safety for your household.
Bespoke Finishing
Secondary glazing should complement your interior décor. Our frames feature ultra-slim sightlines and can be finished in a wide range of colours to match your skirting or window boards.
Our Window Installations
Completed Window Projects
Black Aluminium Windows in West Malling
Casement Windows & French Doors in St Mary's Island
Windows & Composite Door in St Mary's Island
White uPVC Casement Windows in Strood
White uPVC Bay Windows in Strood
White Casement Windows in Strood
Casement Windows & Composite Door in Strood
uPVC Casement Windows & Doors in Strood
Grey uPVC Casement Windows in Strood
uPVC Vertical Sliding Sash Windows in Rochester
Testimonials
What Our Customers Say About Us
Our reputation is built on trust, quality, and countless successful installations across Kent. We truly value what our clients have to say with over 500 reviews to show for it (see links below).
See Our ReviewsCheckatrade
Positively reviewed by over 200 Kent homeowners, our consistent positive feedback reflects our dedication to transparency and quality craftsmanship. Find out what your neighbours are saying.
Which?
Independently endorsed for quality and consumer protection, we meet rigorous standards set by Which? This accreditation is your assurance of exceptional service, fair pricing, and reliable installations you can trust.
Why Choose Us?
How We Ensure High Standards
Precision Installation
Our certified team takes extreme care with every install, ensuring perfection. With 20+ years of install experience in Kent, we gurantee high standards.
Stress-Free Local Experts
As local, family-run experts in Kent & Medway, we take pride in our transparent, no-pressure process, from consultation to the final tidy-up.
A Team You Can Trust
Not only can you be assured by our 500+ reviews, you're also in the hands of a certified team and also covered by our 10-year guarantee.
Year On Year Savings
Beyond your initial investment, our A-rated windows and doors are designed to deliver significant energy savings, lowering energy bills.
Quality You Can Feel
Experience superior performance and beauty with high quality windows and doors that ensures security, energy efficiency, and a fantastic look.
Local 5 Star Reputation
If you haven't already, feel free to check our Which Trusted Trader, Google Business, and Checkatrade reviews to hear directly from our customers.
Choices For All Homes
With decades of industry experience, our team can assist with in-depth product knowledge and innovative solutions for any Kent property.
Seamless Journey
We'll guide you through every step, from selecting the perfect windows and doors all the way to an end results that'll make you feel house proud.
FAQ's
Common Secondary Glazing Questions.
Do I need planning permission for secondary glazing in a conservation area?
In the vast majority of cases, secondary glazing does not require planning permission or listed building consent. Because it is an internal alteration that does not change the external appearance of the property, it is widely accepted by local councils across Medway and Kent as a sympathetic way to improve energy efficiency in heritage homes.
How much noise reduction can I actually expect?
Secondary glazing is actually more effective at soundproofing than standard double glazing. When installed with a specific gap (usually around 100mm to 150mm) from the primary window, it can reduce external noise levels by up to 80dB. This is a life-changing difference for homeowners near busy roads or train lines such as in Gillingham and Rochester.
Will I still be able to open my original windows?
Yes. We design the configuration of the secondary units to mimic the opening of your primary windows. If you have sash windows, we use vertical sliders; if you have casements, we use horizontal sliders or hinged units. This ensures you maintain full ventilation and can easily clean your original glass.
Is secondary glazing expensive compared to new uPVC windows?
Secondary glazing is typically much more cost-effective than a full window replacement, especially if you are considering high-end timber replacements. It allows you to gain the performance of a new window at a fraction of the cost, with significantly less mess and disruption during the installation process.
How long does the installation take?
Because there is no need to remove your existing windows or disturb the exterior masonry, the installation is very fast. Most domestic projects in Medway can be completed in a single day, and since we work entirely from the inside, we can install them regardless of the weather conditions outside.
Does secondary glazing require a lot of maintenance?
Hardly any. The aluminium frames are powder-coated for a long-lasting finish that never needs painting. You simply need to wipe the frames down occasionally and clean the glass as you would with any other window. The sliding and hinged mechanisms are designed for decades of smooth operation.
Secondary Glazing Services
Everything We Can Help You With
Unsure if we can offer what you need? Check out this list or feel free to get in touch and we'll answer your questions.
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See If Secondary Glazing Is For You
Get in touch via our contact form or by phone or email to get more information about our secondary glazing services. Our friendly team is more than happy to answer any questions not covered in the FAQ and book you in for an in-person viewing when you're ready to take the next step.
