The Latest Innovations in Secondary Glazing Technology

At Granada, we specialize in the design and installation of secondary glazing for all types of commercial, trade, and professional applications, from shop fronts and office buildings to museums, hospitals and hotels.

We use only the highest quality materials and our experienced team will provide you with the best solutions for your project. Whether you need secondary glazing for a single window or an entire building, Granada has the experience and expertise to meet your needs.

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 Once you've completed the enquiry form, we'll be in touch to find out your exact needs and requirements.

 We'll find you the perfect Granada-approved installer, provided you don't want to manage the install yourself.

 Your Granada-approved installer will contact you directly to discuss your needs and arrange a home survey if required.

 Our industry-leadings products will ensure you have a quieter, warmer and more secure home.

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What is Secondary Glazing?

Secondary glazing is the perfect solution for properties where window replacement is not an option. This discreet, slimline aluminium panel is installed either within the reveal or to the face of the existing window and is barely visible to the naked eye. It not only increases the thermal and acoustic performance of the primary window but also offers increased security and privacy.

What are the main types of Trade & Commercial Secondary Glazing?

Horizontal Sliding Secondary Glazing

Our horizontal sliding system is a slim, stylish and versatile option, available in both the Traditional and Heritage ranges. You can get 2, 3, 4 or 5 sliding sashes that glide easily along the aluminium track, giving you great access for cleaning and ventilation while still looking nice and subtle. The Heritage range is designed for bigger glass expanses, with heavy-duty units and self-supporting panes.

Vertical Sliding Secondary Glazing

Our vertical sliding secondary glazing solution is available in three variations, all featuring specially designed, self-supporting panels that can remain at any chosen position. Additionally, each sash panel can be independently released from its frame and can be tilted inwards through almost 180°, courtesy of the tilt-in facility.

Hinged Unit Secondary Glazing

Our hinged product range features a hinged secondary glazing solution with a discreet 72mm sight line and no transoms or mullions. This product is equipped with a unique, single handle operation and a multi-point locking system for superior security. Additionally, it has the capability of side and base opening, as well as a tilt and turn facility for effortless maintenance. For large glass expanses, heavy duty units and self-supporting panes are available.

Lift Out Secondary Glazing

Our lift out units come in three distinct styles – slimline, traditional, and heritage. Each of these variants features a removable secondary glazing panel encased in an external frame which can be secured to the face or reveal of the existing window. The slimline style features a slim aluminium frame for a neat, unobtrusive view. For large and robust windows, the heritage variation offers heavy duty units to support the heavier load.

Bespoke Secondary Glazing

Granada specialises in creating custom secondary glazing solutions for any type of window, including arched and bay windows, curved and circular glass, and angled secondary windows. We have the necessary tools and skills to curve and bend sections, and our expertise has been recognized through successful projects, such as church renovations, hotel developments, and hospital improvements.

How Granada works for you
Quality products
Quality products
Fewer customer queries, simple to install, rigorously tested
Multiple design choice
Multiple design choice
Fully customised products, maximum customer options
Technical back-up
Technical back-up
Advice, technical support, on site technical visit by advisor
Full advisory service
Helpline for homeowner product, service or installation queries.
Full advisory service
Installation accreditation
Training and accreditation provided by us with technical site guidance.
Installation accreditation
10-year warranty
For all frames and glazing. British factory made, engineered to last.
10-year warranty

Trade Support

Our UK-wide network of trade customers receives industry-leading secondary glazing products, backed by industry-leading customer service. We work exclusively with the best installers across the country to ensure homeowners are offered exceptional value throughout every stage of their project. Our trade customers are able to submit their secondary glazing requests through our brand-new online quotation and ordering system.

Commercial Support

We work with architects, specifiers and contractors across the UK and fully project manage our commercial secondary glazing installs, from initial site survey to final installation. Our team are experts in their field, and we’re able to offer technical advice and drawings throughout every stage of the project. Our own secondary glazing CPD session is available for architects to learn more about our offering.

Products for Professionals Secondary Glazing FAQ's

What is commercial and trade secondary glazing?

As part of our commercial secondary glazing offering, we work with architects, specifiers and contractors to manage installation projects across the UK. As part of our trade offering, we supply our industry-leading secondary glazing products to installation companies who liaise directly with homeowners.

What are the benefits of commercial and trade secondary glazing?

Both our trade and commercial partners are able to benefit from our entire suite of ultra-sleek secondary glazing products. Whilst we manage the installation process as part of our commercial offering, our product offering doesn’t differ at all. Both are able to enjoy the streamlined aesthetics of our secondary glazing range.

Is commercial and trade secondary glazing suitable for use in listed buildings?

Secondary glazing, whether for our commercial or trade partners, is an ideal choice for listed buildings. Given traditional window replacement often isn’t an option, secondary glazing is the most effective means of bolstering a listed buildings thermal and acoustic performance.

What are the different options available for commercial and trade secondary glazing?

We offer a wide range of product types that are suitable for both commercial and trade applications. This includes vertical sliding, horizontal sliding and hinged secondary glazing.

How much does commercial and trade secondary glazing cost?

The cost of our secondary glazing products, to both our commercial and trade partners, depends on a number of factors including product type, glass spec and sizing’s. To find out more about our pricing for a specific project, contact our commercial and trade teams directly on 01909 499899.

How is commercial and trade secondary glazing installed?

Secondary glazing is significantly easier to install that traditional window replacement and involves considerably less disruption to the window reveal. Visit the Granada Secondary Glazing YouTube channel to view our full suite of installation training videos.

Interested in a commercial secondary glazing solution?

Submit your enquiry