Our Products


Our windows are stylish, modern and fully customisable so that you can design to your own specification and requirements.


We offer a wide range of door products including residential, uPVC, composite doors, french doors and stable doors. For a full list of features and benefits, take a look at our doors category.


Modern conservatories and orangeries today are much more versatile and offer many different uses such as garden rooms, dining rooms, kitchen extensions.

Roof Lanterns

If you are looking for elegant and stunning skylights or lanterns, we are here to help. We offer a wide range of skylights and lanterns at fantastic prices.

Commercial Shopfront Windows

If you are looking for elegant and stunning skylights or lanterns, we are here to help. We offer a wide range of skylights and lanterns at fantastic prices. Contact us if you need assistance with choosing the perfect products for your home improvement project!

Origin Global

The world's leading brand of aluminium windows and doors. An Origin product is a completely bespoke product, tailored exactly to your size, colour scheme, finish and accessory requirements.

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Double Glazing in Cheltenham and Gloucestershire

Double Glazing in Cheltenham and Gloucestershire

Quality By Design (QBD) are a well established double glazing company in Cheltenham with over 35 years of experience specialising in the installation of windows, doors and conservatories. We carry out each installation with care and professionalism, giving you exceptional service and superior products. Our knowledge and expertise help us to deliver the best glazing solutions for our customers.

When it comes to home improvement, there are few things that have as much impact on the look and feel of your property as a new window or door. One thing you should think about when choosing what type of window or door is right for your home is how they will blend in with the overall design. Our range includes products from leading manufacturers, all made to measure with luxurious finishes. Browse our website now if you want more information on which product best suits your needs or contact us today!

Origin logo

Transform your home with Origin aluminium windows and doors, expertly made in the UK

Transforming homes throughout Cheltenham and Gloucestershire with Origin’s range of aluminium windows and doors. Upgrade your home with our premium products for a contemporary feel.

Find out more about Origin
Origin Bifold Door in Grey
Latest projects

We pride ourselves on offering a personal service. Communication is of paramount importance to us from when you make the first enquiry to when our fitters turn up on time, with an understanding that they should treat your property as your home and not just a place of work.

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    What our customers say

    Absolutely fantastic service, above and beyond the normal... A real A class local company. Great value too. Very happy repeat customer - Daniel

    First class service by a local independent company

    18 March, 2022

    Wow. What a service! Due to the current situation with post-pandemic demand, QBD told us from the start that there would be a wait of several months but it was the same story everywhere. We were kept informed and knew when our job would be done. I think they had a cancellation so they ended up with more people working on our job than they usually would (6, I think) and they were incredibly quick efficient and tidy workers. Six windows out and new ones put in within a day. So impressed -- would definitely recommend them and use them again. - Clare

    Excellent service – highly recommended

    18 March, 2022

    Just wanted to thank Arron, Rob, Lily and the amazing fitters for our new french doors which has converted our garage size shed into a home bar!!! From start to finish the team have been knowledgeable, professional, friendly and great at communicating with us. Can't thank them enough and would recommend them highly - Breath of Fresh Air to receive such outstanding service. - Katrina

    Breath Of Fresh Air To Have Such Great Service, Communication and Workmanship

    18 March, 2022