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40 Years of trust, built for today.

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For over 40 years, DDG Windows has been transforming homes across East London and Essex with windows and doors that combine craftsmanship, innovation, and trust. As one of the UK’s largest independent family-run glazing manufacturers, we design, fabricate, and install everything in-house — guaranteeing quality at every step. From bespoke aluminium and heritage frames to cost-effective uPVC solutions, our team blends decades of experience with fresh, modern design to create stylish, secure, and energy-efficient homes that stand the test of time.

40 years of craftsmanship. Built for the future.

For over four decades, DDG Windows has beenshaping homes across East London and Essexwith windows and doors that combine lasting quality with modern design. What started as a small family-run business is now one of the UK’s largest independent double-glazing manufacturers — still family-built, family- managed, and now into its third generation. 
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2025
2025
For over four decades, DDG Windows has beenshaping homes across East London and Essexwith windows and doors that combine lasting quality with modern design. What started as a small family-run business is now one of the UK’s largest independent double-glazing manufacturers — still family-built, family- managed, and now into its third generation. 

By the Numbers

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Our Products. Your peace of mind.

Whether you’re upgrading uPVC windows for greater efficiency, investing in aluminium frames for a premium look, or transforming your home with our Heritage collection, DDG delivers solutions that are:
  • Energy-efficient – helping lower bills while maximising comfort.
  • Secure & durable – with products designed to last 50+ years.
  • Beautifully bespoke – modern designs that elevate kerb appeal and create timeless spaces to admire.
windows
Precision-engineered to elevate light, comfort and design. Explore timeless styles tailored to your home.
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Doors
Where refined design meets lasting performance. Find the statement piece that defines your entrance.
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Architectural glazing that transforms interiors with light. See how our lanterns reimagine modern living.
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Meet the people behind the process

Our people are at the heart of everything we do. Many of our team members have been with us for decades, working alongside younger innovators to ensure DDG stays ahead with cutting-edge machinery, contemporary design, and expert craftsmanship. From Neil’s first home visits — with no pushy sales tactics, just honest quotes — to our installers who treat every property with respect, you’ll always feel supported and looked after.

Our Leaders

Experienced. Dedicated. Customer-focused. Our directors and senior management team lead with decades of experience in window and door design, manufacturing, and installation. Based in London and Essex, the DDG leadership team oversees every stage of production, ensuring quality craftsmanship, efficient service, and customer satisfaction on every project.

Our Makers & Installers

Skilled. Reliable. Proud of their craft. From our expert fabricators and finishers in the workshop to our professional fitters, installers, and delivery drivers, every member of the DDG team plays an essential role. Their precision, care, and attention to detail ensure your new windows and doors are expertly crafted, installed, and finished, right here in our London factory and fitted across homes throughout Essex and the South East.

Who we work with

  • Homeowners

    bespoke upgrades that blend style with security.

  • Landlords

    reliable, cost-effective uPVC replacements across multiple properties.

  • Contractors & Developers

    commercial-grade windows and doors, manufactured to specification with fast lead times.

Proudly British. Proudly Independent.
Proudly British. Proudly Independent.

As one of the UK’s biggest family-run glazing factories, we’re proud to be a British manufacturer with over 1,000s of reviews dating back to the 1980s. Every DDG product comes with a 10-year guarantee* (T&C’s apply) giving you complete peace of mind.

Everything under one roof

Unlike many competitors who simply resell or part-fabricate, every DDG product is designed, manufactured, and installed by our in-house team at our factory in Dagenham. This means you can expect precision, accountability, and the highest standards of quality control from start to finish. From the first measure-up to the final installation, our team ensures your project runs smoothly and your home is treated with the same care as if it were our own.
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Frequently asked questions

Normally within 48 hours from email/ visit, you will receive written quotaion via email.

This often depends on the condition of the site and how complicated it might be. Usually, a two-man team of fitters will complete three to six windows per day.

  • A confirmation of your styles, openings, glass spec & colour options will be required
  • This will be put into a formal order.
  • Thereafter, a deposit will be required.
  • A site survey will be booked, to take accurate measurements for manufacturing.

Yes, we only use our own fully trained and accredited installers for all of our jobs.

  • If on attendance it is deemed there are no faults/ warrantee issues, then a call out charge of a minimum £80.00* +VAT will be chargeable. If the call out charge is not paid, then all warrantees will be invalidated.
  • All warranty call-outs, must be made in writing.
  • You must either email [info@ddgwindows.co.uk] or write DDG Windows ltd, 844 Romford Rd E12 5JP.
  • We will require a copy of your Guarantee, and a photo/video of the problem.
  • Once this is received – we will arrange an appointment for an engineer to visit [Normal working hours from Mon- Fri 9-5PM
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