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Fixed Secondary Glazing

What is Fixed Secondary Glazing?

Fixed secondary glazing is an independent window that is fitted on the interior side of the existing window. The purpose is to provide significant noise reduction, improved thermal performance and enhanced security. An insert panel is attached to the existing pane and can be fixed permanently into position on a window or door then it is trimmed and sealed all around the edges.

Available in several different styles and single or double glazed aluminium profiles, fixed secondary glazing has a number of configurations to choose from. It is fitted in a way that is easy to maintain and clean, with exceptional functionality and performance.

Note: Neither of these types of secondary glazing units is suitable for fire escape applications.

Panel Options for Fixed Secondary Glazing

Fixed Windows

Why Add Fixed Secondary Glazing to my Home?

By adding fixed secondary glazing to your home, you’re investing in a simple and stylish solution that adds a slim-line window in a discreet and elegant manner. The external appearance of your home is not affected by installing fixed secondary glazing making it a subtle upgrade. The lightweight and durable nature of our fixed secondary glazing is virtually maintenance free, without you needing to spend time or money on their upkeep.

It’s a popular home improvement project to undertake as it suits any property type and heightens the security of your home. Security is a priority for the majority of homeowners in the UK and our fixed secondary glazing can assist in deterring potential intruders and make it more difficult to break-in.

Fixed secondary glazing is designed to insulate your home and reduce external noise. Available in single or double glazed options you have the option to select any RAL colour you need to have them complement the aesthetic of your home. Whether you want a subtle shade to blend in with your current surroundings or you’d like a colour that will make a statement and stand out, the possibilities are endless.

Clear Benefits of Fixed Secondary Glazing

65% reduced heat loss

Substantially improves the thermal insulation of existing single-glazed windows.

80% noise reduction

Secondary glazing offers the most effective sound insulation – significantly outperforming double glazing.

Maximum Frame Sizes for Fixed Secondary Glazing

Traditional range

Features of Secondary Glazing Sash Windows

5 Year Warranty

5 Year Warranty

All windows come with a five-year warranty on frames and glazing.


Local Delivery

Our local partners can deliver and install at your convenience.

RAL colours

Choose From 200 Colours

Aluminium frames can be finished in the full range of RAL colours.

Bespoke Range of Glass

Glazing can be specified from 4 - 8.8mm, to meet thermal and acoustic demands.

Cleaning and maintenance

Simple to Maintain

Cleaning and maintenance is made simple with easy to lift out panels.


Discreet Installation

Windows can be face-fixed or reveal-fixed, to suit your preference.

Fixed Secondary Glazing for Residential and Commercial Buildings

Secondary glazing is suitable for both residential and commercial buildings. If you’re unable to alter or replace the primary windows because it’s not possible or cost-effective, our secondary glazing system is the ideal solution. Listed buildings, properties within a conservation area and heritage homes may well benefit from our fixed secondary glazing that leaves the existing windows intact whilst modernising the windows and bringing excellent benefits.

Fixed secondary glazing works hard to minimise the build-up of condensation which can lead to mould or mildew issues over time. You can be confident that your home will no longer suffer with draughts and you’ll be able to maintain a warm and comfortable temperature all year round. The waterproof sealing will make sure your home is always dry and ensures that your windows can withstand even the most adverse weather conditions.

Fixed secondary glazing is often installed to help insulate the property to improve the thermal efficiency which helps lower energy costs and your carbon footprint. This makes it an eco-friendly choice that can help contribute to a greener environment.
Another benefit of fixed secondary glazing is the noise reduction it provides, especially convenient for homes near busy roads, industrial areas or airports. You’ll enjoy a more peaceful environment that all of the family can enjoy.

If you choose Granada for your fixed secondary glazing you will benefit from a five year warranty on all frames and glazing giving you peace of mind about the durability and long lifespan that your new windows will provide. Our local partners can deliver and install your fixed secondary glazing at your convenience and will be able to answer any questions you may have during the process.

Request a Free Secondary Double Glazing Quote – 2 Simple Steps

Fixed Secondary Glazing Prices

You can get a free no-obligation quote for your fixed secondary glazing needs or get in touch with our expert team to find out more information.

We will be more than happy to discuss your requirements and specifications in order to provide you with an accurate and relevant quote. If you have any questions or queries simply get in touch with our expert team who will happily talk you through our range of fixed secondary glazing options.

Secondary Glazing FAQs

Can you Install Secondary Glazing yourself?

A skilled tradesperson can install secondary glazing within 1 hour. Our products are supplied as standard with a hardwood subframe. The subframe serves two purposes; It enhances the rigidity of the aluminium window for ease of installation and acts as a thermal barrier between the fabric of the building and aluminium window frame. Installation and finishing videos can be viewed by clicking here.

What is DIY Secondary Glazing?

Secondary DIY Glazing kits are available in a wide range of colours and styles. You can use these kits, which accommodate any size window, and can be installed in less than an hour.

How much is Secondary Glazing?

The price of Secondary Glazing can vary, depending on the size and style of your Secondary Glazing. You can have a look at our online quote engine to get an instant Secondary Glazing quote that is bespoke to you and your home.

How can I get a Secondary Glazing Price?

You can use our free online design tool to design your perfect Secondary Glazing and get a quick and instant quote in return! A quick and simple way to get a Secondary Glazing quote.

How Much will it Cost me to get Secondary Glazing?

You can use our free online Secondary Glazing design tool to create the perfect windows for your home and get an instant Secondary Glazing cost in return. Or, you can get in touch with our expert team here at Granada Secondary Glazing, are on hand to help you with all your cost and price queries.

What is Fixed Secondary Glazing?

Fixed Secondary Glazing is an independent window that is fitted onto the internal side of your existing window frame. This creates a second barrier between your home and the outside, helping to enhance noise reduction, thermal efficiency and security of your home.

Why add Fixed Secondary Glazing into your home?

When you install Fixed Secondary Glazing into your home, you get an elegant, slimline addition for your property. The external appearance of your home is not altered, but the internal aesthetics are greatly enhanced. The performance of your home is too!

Can I add Fixed Secondary Glazing to a Fire Escape Window?

No, a Fixed Secondary Glazing panel means you cannot have access to the original, existing window. This means that you cannot installed Fixed Secondary Glazing panels to your designated fire escape. This would also not comply with Building Regulations.