Beautiful windows, doors and conservatories, fitted properly.
Windows, doors and conservatories for period properties ranging from the 1930s through to modern new builds. Guaranteed for ten years.
What we fit.
Three things, done properly. For every house type, across Hertfordshire, Buckinghamshire, Bedfordshire and North London.
Meet the co-founder
“We started Dukes to do this properly — an honest, professional service, built on pride in the work.”
Built for every kind of home.
From a Victorian sash in the city centre to a modern aluminium bifold on a new-build estate. We work in every house style across Hertfordshire, Buckinghamshire, Bedfordshire and North London.
How we work.
Five steps from your first call to handover. Nothing skipped.
- 1
First call
Guaranteed call back within two business hours.
- 2
Home visit
A visit at your home. No hard sell.
- 3
Quote
In writing. Itemised.
- 4
Survey & manufacture
An official survey within five working days, before anything is made.
- 5
Install & handover
Your ten-year guarantee, in writing.
Why choose Dukes?
Ten-year guarantee.
In writing. Honoured by us, not a third-party insurer. The phone number on your guarantee is the same one you called to book the home visit.
Built on three values.
Honesty, pride and integrity. Dukes was co-founded to bring an honest, professional and reliable service to a trade that too often lacks all three.
Recent work.
Three house types, three quietly different jobs — the kind of work Dukes is built for.
Hertfordshire Homes Guide
From the Hertfordshire Homes Guide.
Free reading on windows, doors and conservatories for every house in the county. No form, no email.
Book a home visit.
Book a home visit and we'll talk through your project at your house — no call centre, no hard sell. We call back within two business hours, and you'll get an itemised written quote.