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Years of experience
20 +
Projects completed
0 k+
Customer Rating
4.9
Installation Guarantee
10 Yr
Alu Windows Dble fronted modern tce (1)

Better insulation. Lower bills. Lasting quality.

Every uPVC window we install is made to your home’s exact measurements – not a standard size forced to fit. That precision matters: a properly fitted uPVC window seals better, insulates better, and lasts longer than an off-the-shelf alternative.

Our uPVC windows use advanced multi-chamber profiles, which trap more air and reduce heat loss compared to older single- or double-chamber designs. If you’re comparing uPVC window prices against aluminium, uPVC remains the most cost-effective way to hit strong thermal performance without compromising on style.

Bespoke uPVC Windows

Whether you need a single replacement window or a full house of uPVC windows and doors, our team measures, manufactures, and installs to your exact spec - from arched and circular to square or rectangular frames.
Trusted for 40+ Years
Founded in 1983, DDG remains a family run company, dedicated to providing quality.
Made in London
Every one of our windows and
doors are made in our Dagenham manufacturing site.
FENSA Registered
Government-approved FENSA registration guarantees safe, compliant, and insured installations.
Craftsmanship & Innovation
Our team blends expert skills with modern methods creating products that are precise and stylish.
PAS 24 Security Standard
Resisting forced entry, delivering protection, and exceeding standards years ahead of regulation.
Lasting Impact
We build windows and doors that deliver timeless style and strength, year after year.

Frequently Asked Questions

Cost depends on the number of windows, size, style, and glazing spec. Every quote is free and based on an in-home or video survey - get in touch for an accurate price, not a generic estimate.

Most homes are fitted within a day or two per window run, depending on scope. We'll confirm exact timings once your windows are surveyed and manufactured.

Both perform well. uPVC typically costs less and offers excellent thermal efficiency; aluminium suits slimmer sightlines and larger openings. We can talk you through which fits your home and budget.

Yes - uPVC windows work well on semi-detached and terraced homes alike. We'll advise on styles that suit your property's age and layout during your survey.

All our uPVC windows come with manufacturer-backed guarantees on frames and glazing. Full details are available on request or on our guarantees page.

For many of the larger and more premium homes in Upminster, yes. Aluminium windows offer slimmer sightlines, a wider range of RAL colours, greater strength for larger spans, and a finish that holds its quality over decades without the fade or discolouration that older uPVC can suffer. For a standard semi, the premium may not be necessary - but for a larger detached home where aesthetics and longevity matter, aluminium is often the better long-term investment. We'll give you an honest comparison during the consultation.