Secondary glazing, the ultimate way to control your living space

No matter where you live or what kind of property you own, our range of secondary glazing products allows you to create your own ideal, comfortable and secure environment.

Transform the peace, warmth and sanctuary of your home with our discreet, advanced secondary glazing system, and change the way you live.

At Granada Secondary Glazing, we are proud to be the largest secondary glazing manufacturer in the UK, producing around 25,000 frames per year for both residential and commercial customers.

Tap into healthier, smarter living

A greater sense of well-being begins with the spaces around us. We are inspired by light-filled, quiet and comfortable rooms that also let the views in. It’s how everyone wants to live today. We at Granada design and manufacture affordable secondary glazing products that support this vision.

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Find window inspiration

Explore hundreds of design options whether you’re upgrading an older property or increasing the value of an existing one. Find solutions and your inspiration here – just imagine the possibilities. Our installers transform properties whether old or new, listed or newly built, into energy-efficient, fully functioning spaces.

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Secondary Glazing Explained

Fixed to either the face or reveal of the existing window, secondary glazing features the installation of a ‘secondary’ window unit, offering an additional barrier against external noise and heat loss, without any compromise on aesthetics. Sealed around the edges, the secondary unit sits independently from the existing window and comes in several different variations. With an easy, no fuss installation process, homeowners throughout the UK are making the switch to secondary glazing.

What homeowners are saying...

“Great communication and prompt, friendly service. We had secondary glazing fitted throughout our 17th century listed farmhouse and it is noticeably warmer, but most importantly for us the condensation has been massively reduced!” John Mitchell - 27 Nov 2020

“So surprised at how effective it is at stopping sound. It has made my room almost completely silent and has completely wiped away the noise of the road. For the first night ever, I’ve slept without earplugs.” Bobby Pec - 28 Nov 2020

“When I saw the end product, I was literally speechless as it was so beautifully finished and in keeping with the original frame.” Shana Mona Khan - 6 Dec 2020

Slim, discreet & stylish

Our secondary glazing fits into traditional and contemporary décor and doesn’t affect the appearance of existing windows. Engineered to fit exactly on or within the original window with a choice of many styles and colours, our range is designed to blend in. Style, colour and shape can be tailored to your exact requirements and specifications.

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Robust and secure

Secondary glazing also acts as a visual deterrent and additional barrier to entry. We use toughened glass and best-grade aluminium profile to manufacture windows that are virtually unbreakable. No need for unsightly measures that will affect the value of your property. Thanks to secondary glazing, our customers can enjoy a warmer, home secure home, without damaging their existing décor.

An effective solution

From a noise reduction and thermal insulation perspective, secondary glazing offers an effective and affordable alternative to traditional window replacement. If external noise is a persistent issue in your home, secondary glazing is the most effective way to preserve and enhance your peace and quiet. If draughty windows are of bigger concern for your property, secondary glazing adds an extra layer of defence to protect your home from heat loss. The results are staggering, with reduced noise levels of up to 80% and a reduction in heat loss of up to 65%.

A colour to suit your scheme

Find the perfect match for your Granada secondary glazing using our range of over 200 RAL colours. Whether you own a new build, listed property or commercial property, we can fit your requirement.

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RAL 1000 RAL 1001 RAL 1002 RAL 1003 RAL 1004 RAL 1005 RAL 1006 RAL 1007
RAL 1011 RAL 1012 RAL 1013 RAL 1014 RAL 1015 RAL 1016 RAL 1017 RAL 1018
RAL 1019 RAL 1020 RAL 1021 RAL 1023 RAL 1024 RAL 1026 RAL 1027 RAL 1028
RAL 1032 RAL 1033 RAL 1034 RAL 1035 RAL 1036 RAL 1037 RAL 2000 RAL 2001
RAL 2002 RAL 2003 RAL 2004 RAL 2005 RAL 2007 RAL 2008 RAL 2009 RAL 2010
RAL 2011 RAL 2012 RAL 2013 RAL 3000 RAL 3001 RAL 3002 RAL 3003 RAL 3004
RAL 3005 RAL 3007 RAL 3009 RAL 3011 RAL 3012 RAL 3013 RAL 3014 RAL 3015
RAL 3016 RAL 3017 RAL 3018 RAL 3020 RAL 3022 RAL 3024 RAL 3026 RAL 3027
RAL 3028 RAL 3031 RAL 3032 RAL 3033 RAL 4001 RAL 4002 RAL 4003 RAL 4004
RAL 4005 RAL 4006 RAL 4007 RAL 4008 RAL 4009 RAL 4010 RAL 4011 RAL 4012
RAL 5000 RAL 5001 RAL 5002 RAL 5003 RAL 5004 RAL 5005 RAL 5007 RAL 5008
RAL 5009 RAL 5010 RAL 5011 RAL 5012 RAL 5013 RAL 5014 RAL 5015 RAL 5017
RAL 5018 RAL 5019 RAL 5020 RAL 5021 RAL 5022 RAL 5023 RAL 5024 RAL 5025
RAL 5026 RAL 6000 RAL 6001 RAL 6002 RAL 6003 RAL 6004 RAL 6005 RAL 6006
RAL 6007 RAL 6008 RAL 6009 RAL 6010 RAL 6011 RAL 6012 RAL 6013 RAL 6014
RAL 6015 RAL 6016 RAL 6017 RAL 6018 RAL 6019 RAL 6020 RAL 6021 RAL 6022
RAL 6024 RAL 6025 RAL 6026 RAL 6027 RAL 6028 RAL 6029 RAL 6032 RAL 6033
RAL 6034 RAL 6035 RAL 6036 RAL 6037 RAL 6038 RAL 7000 RAL 7001 RAL 7002
RAL 7003 RAL 7004 RAL 7005 RAL 7006 RAL 7008 RAL 7009 RAL 7010 RAL 7011
RAL 7012 RAL 7013 RAL 7015 RAL 7016 RAL 7021 RAL 7022 RAL 7023 RAL 7024
RAL 7026 RAL 7030 RAL 7031 RAL 7032 RAL 7033 RAL 7034 RAL 7035 RAL 7036
RAL 7037 RAL 7038 RAL 7039 RAL 7040 RAL 7042 RAL 7043 RAL 7044 RAL 7045
RAL 7046 RAL 7047 RAL 7048 RAL 8000 RAL 8001 RAL 8002 RAL 8003 RAL 8004
RAL 8007 RAL 8008 RAL 8011 RAL 8012 RAL 8014 RAL 8015 RAL 8016 RAL 8017
RAL 8019 RAL 8022 RAL 8023 RAL 8024 RAL 8025 RAL 8028 RAL 8029 RAL 9001
RAL 9002 RAL 9003 RAL 9004 RAL 9005 RAL 9006 RAL 9007 RAL 9010 RAL 9011
RAL 9016 RAL 9017 RAL 9018 RAL 9022 RAL 9023

Advanced quality products

We use only the highest grade, strongest and most durable aluminium to produce secondary glazing units of unparalleled quality. They are all crafted and engineered at our state-of-the-art manufacturing facility in Sheffield, incorporating best-of-British workmanship.

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Installation & 10-year warranty

Granada-approved installers are trained and accredited by us, or you can employ your own fitter. Our 10-year manufacturer warranty is standard on all products, in addition to the installer’s warranty. We control the entire manufacturing process, so quality is assured, and have a leading reputation of over 35 years industry experience.

An Array of Benefits

Beyond the reduction in external noise and heat loss, secondary glazing also allows homes to retain their character and charm, whilst benefitting from 21st century thermal and acoustic performance. In monetary terms, replacing timber sash windows can often be an expensive affair. Installing secondary glazing on the other hand is a far cheaper and simpler process. The cost saving doesn’t stop there though, as our secondary glazing solution radically reduces heating costs by ensuring the cold weather remains outside.

Secondary Glazing vs Double Glazing

From a noise cancellation perspective, secondary glazing is the most effective way to reduce noise within our customers homes, even more so than the most high-spec double glazing solution. The small gap between the existing window and the secondary unit effectively acts as an acoustic insulator, blocking sound as it attends to enter the property. Our secondary glazing is manufactured using state-of-the-art machinery to lock-in a tightly sealed frame which reduces noise levels by up to a whopping 80%.

Secondary Glazing FAQs

Secondary glazing is used to combat all sorts of annoyances within the home. Noise, cold temperatures and condensation issues can be managed and controlled using our solution. We also offer multiple design and glass options to match your décor.

Find out more about the benefits of secondary glazing.

Our whole range of secondary glazing is made to measure and features an unobtrusive profile. We can fit a range of standard window styles and even offer a bespoke secondary glazing service for the less common shapes.

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Secondary glazing is scientifically proven to reduce noise in your home by up to 54 decibels, giving your windows unrivalled levels of acoustic performance. Perfect for built-up areas such as homes near trainlines or under flightpaths.

Learn more about why secondary glazing provides the most effective levels of noise reduction.

The extra layer of protection offered by secondary glazing ensures the heat remains firmly within your home. Our solutions reduce heat loss by up to 60% and improves your carbon footprint.

Learn more about how secondary glazing helps with thermal insulation.

Secondary glazing outperforms double glazing in nearly all areas. Offering more than double the sound protection as well as increased thermal insulation. Secondary glazing can also be used on heritage properties without destroying to history or the status of the building.

Take a look at the other secondary glazing benefits.

You’ll be amazed at how cost-effective our entire suite of secondary glazing products are. You also receive the added benefit of saving money with secondary glazing installed, as your energy bills reduce due to less heat escaping.

Take a look at how secondary glazing can save you money and how it can add value to your home.

Alongside the thermal and noise benefits that you receive with secondary glazing, it also adds an additional layer of protection to your home against any would be intruders. A very discreet security feature that reduces the need for unsightly grills and other preventative measures.

Find out about the other benefits of secondary glazing.

Start your secondary glazing journey today...

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