Customised windows for every application
Wide range of shapes, tints, security and acoustic glazing

For every unique window, there is a secondary glazing solution. Our decades of experience means we fit every kind of window precisely to your spec. There is virtually no limit to the kind of property that can be made better with the broad range of solutions we have available.

No matter what kind of property you have – domestic or commercial – you will be amazed at how quickly and remarkably secondary glazing provides a solution.  Secondary glazing frames sit behind the window discreetly thereby adding up to 65% more heat insulation and reducing noise by up to 80%, all without sacrificing appearance.

Secondary Glazing Illustration
The Granada difference
Quiet
Secondary glazing offers the most effective sound insulation. Reduces noise by up to 80% and significantly outperforms double glazing.
Warm
Improves thermal insulation of existing single-glazed windows by around 65%, approximately 10% more than double glazing achieves.
Secure
An affordable, discreet, highly effective solution to enhancing security. No external access required, ideal for multi-storey buildings.

Standard and bespoke shapes

From arched and bay windows to curved and circular glass, Granada has the facilities and expertise to produce complex angled bespoke windows. Even stained glass, leaded lights and historic glass can all be secondary glazed.

Many windows in older, more traditional properties are out of square. In most cases, standard secondary glazing can be installed by shaping of the timber sub-frame and using bespoke windows with matching finishing trims.

Through our previous renovations of churches and historic buildings, we have a wide range of existing styles and templates which we can also modify to minimise your costs.

Specialist glass, tints and colours

We offer a wide range of specialist glasses for enhanced security, noise deadening features and solar protection. We offer a full range of glazing thicknesses and treatments so you can customise your windows for thermal, acoustic and security performance. A full 200 RAL colour range for frame finishes is available, as well as other special paint finishes.

Superior aluminium

We use industry-leading aluminium profile that is slim but incredibly strong and stylish. This means all Granada frames are able to hold a heavier weight without losing structural integrity, allowing us to cater for very large window applications.

Our bespoke secondary windows retain the original characteristics of existing windows, whilst taking advantage of design, material and production advances.

Fully guaranteed

Our 10-year guarantee means complete peace of mind when purchasing Granada products. Our trade partners are trained by us and have our technical support and guidance throughout every project. However, you can choose to install our products on your own and contact us for queries.

Features & Options
Annoyances solved
Annoyances solved
Noise, cold, security, condensation issues managed and controlled.
Multiple design options
Multiple design options
Historic, contemporary, or unusual designs. 200 frame colours, lift out panels.
Many glazing options
Many glazing options
From 4 – 8mm thickness to thermal coatings, all fully customised.
Full advisory service
Helpline for homeowner product, service or installation queries.
Full advisory service
Delivery or installation
Local installers trained and accredited by us or home delivered.
Delivery or installation
10 Year Guarantee
For all frames and glazing. British factory made, engineered to last.
10 Year Guarantee

A colour to suit your scheme

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

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

Start your secondary glazing journey today...

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