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Secondary glazing for listed building windows

Secondary glazing is a great way to improve thermal and acoustic insulation and is the perfect solution for installations in period properties and listed buildings.

Acoustic insulation

Adding an extra pane of glass to your window interior will significantly reduce noise transmission.

Thermal performance

Secondary glazing will also help to improve a property's energy efficiency capacity.

Subtle aesthetic

Since secondary glazing is installed on the inside of your windows, it won't impact the exterior appearance.

  • Performance
  • Alternatives
  • Videos
  • Performance

    Improve your home’s thermal performance by up to 70%

    At Droylsden Glass, we only sell products of the highest standard, so we have chosen to use Granada as our secondary glazing supplier. By installing secondary glazing, you can improve your home's thermal insulation, reducing heat loss by up to 70% and significantly reducing noise levels.

    Granada products have all been subject to meticulous testing procedures in line with BS EN ISO 10077-2. The table below gives an overview of the test results and shows how secondary glazing can drastically improve performance and U-values, saving you money on your heating bills.

    Product typeU-Value Primary WindowU-Value Primary + Secondary WindowU-Value Improvement
    Slimline Hinged Unit4.7 W/m²K1.4 W/m²K70%
    Horizontal Sliding Unit4.7 W/m²K1.5 W/m²K68%
    Vertical Sliding Unit4.7 W/m²K1.5 W/m²K68%

    U-values measure how effective your windows are as insulators - the lower the score, the better their thermal performance will be. Get in touch today for a free, no-obligation quote.

    Get a FREE Quote

    Alternatives

    triple glazing

    High performing double and triple glazing

    We’re well aware that secondary glazing might not be suitable for everyone’s requirements. But, we also install double glazing and triple glazing, which you might find are better suited to your needs. Take a look at our window buying guide for our expert advice on which glazing type is the best for your home.

    Get a FREE Quote

    Videos

    Watch our videos on YouTube

    Compare our windows

    We can fit secondary glazing to several different styles of window across the North West of the UK, including:

    cottage windows with secondary glazing

    Secondary glazing for all property types

    We provide several finance deals, including our flexible buy now pay later windows and doors option.

    Buy now pay later with 12 months non-payment period.  Spread the cost with buy now pay later finance available online and in-store.  The buy now pay later finance option allows you to spread the cost of your purchase over 120 months with a 12 month non-payment period.

    If you choose to exercise the option to settle the amount of credit in full before the end of the non-payment period you will not pay any interest .

    If you choose not to settle in full by the end of the non-payment period, the amount of credit remaining will be spread across the remaining term of 120 months with interest charged at a representative APR of 14.9%. You will pay interest on the amount of credit that remains unpaid, and interest will be charged from the date we told you the agreement was live.

    Only available to UK residents over 18, subject to terms and conditions, minimum spend applies.

    As a representative example of how our double glazing buy now pay later offer works:

    Total cash price: £10,000.00
    Deposit £3,333
    Amount of credit: £6,667.00
    Non-payment period 12 months, followed by 120 monthly repayments of £118.51
    Representative APR 14.90%
    Total amount repayable £14221.61

    *Terms and conditions apply, some products excluded, minimum spend applies.

    **Credit is subject to status and affordability, not subject to application and status. Current rates correct as of November 2023. Written quotations available on request.

    Get our Window Selection Guide!

    Need some help picking out your new windows? We’ve simplified the process in this handy guide that will help you narrow down your options and find the perfect windows for your home.

    window buying guide

    Your Buying Journey

    Showroom

    Visit our showroom to talk to the Droylsden Glass experts and gain inspiration for your home improvement plans.

    Design & Order

    We will design the perfect home improvements to suit your individual requirements, completing your order down to the specific details.

    Survey

    We will visit your home at a convenient time to complete a full site survey. This will ensure any necessary regulations are adhered to.

    Manufacture

    All of our double-glazing products are manufactured by highly skilled experts who use industry-leading techniques. This ensures the maximum product quality.

    Installation

    Our fully qualified installers will fit your new products in a turn-around time as short as possible, as we know how busy homeowners are.

    Aftercare

    All of our products come with a comprehensive guarantee. In the unlikely event of an issue, our service team will be able to assist you with our extensive aftercare services.

    Customer Reviews

    We have achieved and built our reputation from our independent customer reviews.

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    Accreditations & Awards

    fsb logo awards logo awards logo Premium Partner Logo 2025 certass logo FHIO logo GGP Installer Awards 23 best conservatory or orangery installation over to £35000 national warranties logo trustpilot logo g24 awards GGP INSTALLER AWARDS 2025 LOGO_WINNER

    Our Showroom

    Improving homes in the North West of England

    We have been carrying out quality installations in Chester, Warrington, Wirral, Trafford, Bolton, Oldham, Manchester, Cheshire, Tameside & Stockport for over four decades. Trusted for Generations: Your Home Improvement Partner, Tried, Tested, and Trusted. View our products by visiting our showroom today.

    Where to find us

    • 42-56 Audenshaw Road
    • Audenshaw
    • Manchester
    • M34 5HJ

    For Sat Navs, use:

    • York Street, Audenshaw,
    • Manchester, M34 5HJ
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