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.

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.

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.

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 system 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.

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.

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.

Learn more about Granada...

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

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.

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.

Start your secondary glazing journey today...

Get a free quote