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Bespoke, Handcrafted Secondary Glazing

We specialise in the design, manufacture and installation of aluminum secondary glazing. This involves fitting a discreet internal window that keeps the character of your property and exceeds the benefits of double glazing. Whether you’re a homeowner or a commercial developer find out how we can transform your property.

Call today on 0845 900 3899

For Homeowners

Granada products not only provide excellent thermal and noise insulation, our choice of finishes and styles have a discreet, unobtrusive finish that is sympathetic to the surroundings and most existing window styles.

For Architects & Commercial

Our ethos is simple – to mean what we say and to be the best in what we do: source, supply and install quality glazing products. Architects and commercial partners can rely on us to design, specify, install and project manage all manner of fenestration projects.

For Trade

Our trade customers are the lifeblood of our business. We provide support materials, installation videos, technical guidance, display samples and excellent response rates, as well as a competitive price and a great product portfolio. We understand that our collective reputations rely on the quality of our products and the in-depth technical back-up we provide to those installing them.

For Homeowners

Granada products not only provide excellent thermal and noise insulation, our choice of finishes and styles have a discreet, unobtrusive finish that is sympathetic to the surroundings and most existing window styles.

Homeowners Range

For Architects & Commercial

Our ethos is simple – to mean what we say and to be the best in what we do: source, supply and install quality glazing products. Architects and commercial partners can rely on us to design, specify, install and project manage all manner fenestration projects.

Architects & Commercial Range

For Trade

Our trade customers are the lifeblood of our business. We provide support materials, installation videos, technical guidance, display samples and excellent response rates, as well as a competitive price and a great product portfolio. We understand that our collective reputations rely on the quality of our products and the in-depth technical back-up we provide to those installing them.

Why Secondary Glazing?

Sound Insulation

Secondary glazing offers the most effective sound insulation – significantly outperforming double glazing. From noisy roads to noisy kids, our windows can reduce noise levels by up to 80%.

Thermal Insulation

Thermal Insulation

Substantially improves the thermal insulation of existing single-glazed windows – reduces heat loss through the window by around 65% – around 10% more than double glazing.

Increased Security

Increased Security

Secondary windows offer an affordable, discreet, highly effective solution to enhancing building security. No external access is required, ideal for multi-storey buildings.

Retain the character of your property

With secondary glazing you can enhance the performance of your property whilst retaining all of its charm and character. You also benefit from enhanced security, plus it allows balanced ventilation to help reduce condensation. Secondary glazing also eliminates draughts and can improve the thermal performance of an existing single glazed window by up to 60%. The transmission of noise through a window can also be reduced by up to 80% (54dB). All this and you can fit without the need of removing your existing windows or erecting scaffolding

Value for Money

Secondary glazing offers better value for money compared to regular double glazing as it is often cheaper but has more benefits. Get your free estimate today and see the difference for yourself.

Featured-Image-Bush-House-Exterior

Bush House, London

Former home to the BBC, and now luxury office space, Bush House was renovated as part of a two-year, £60 million project back in 2012. JLL, ISG and John Robertson Architects were appointed to upgrade and...
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Featured-Image-Marriott-Hotel,-Park-Lane

Marriott Hotel, Park Lane

“We were delighted with Granada’s initial design input and continuing technical support. The flexibility of their secondary glazing allowed us to reduce noise intrusion, whilst retaining...
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Living Room with Secondary Glazing

The Old Post Office, Leeds

A landmark building in the heart of City Square, the Old Post Office was unsurprisingly afforded Grade II listed status prior to its conversion into a high class restaurant and apart-hotel. Originally...
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Secondary Glazing Bay Window

Cold Bay Window – South Yorkshire

Timber windows give a property, charm and character. Over time they can leak vital heat, for the winter months this can cause a room to feel cold and also increase energy bills. A solution to this is to...
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Lady with Secondary Glazed Windows

Lyndhurst Road, Sheffield

“The condensation issues that I’ve been putting up with for 28 years have finally been resolved. You can’t fail to notice the noise reduction either — our new secondary glazing provides a feeling...
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Featured-Image-The-Jones-House-Exterior

The Jones Family

When Paul Jones, who has worked as a trimmer in Granada’s workshop for two years, realised his family could benefit from secondary glazing in their home, we offered to provide them with glazing and put...
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Get a quote today