About Us

A energy rated windows

High quality windows, doors and conservatories in London, Essex and Hertfordshire

Dolphin Windows are experienced installers of high quality windows, doors and conservatories. We’ve been improving properties across Chingford, Walthamstow, Hackney, Enfield, Southgate, Wanstead, Loughton and beyond for more than 10 years.

We offer a wide selection of products, including everything from uPVC casement, sash and tilt and turn windows, to a full range of entrance and patio doors, rooflines, conservatories and secondary glazing. There’s sure to be something in our extensive product range to suit your home and your requirements.

With a commitment to providing exceptional quality products at a high standard, Dolphin are one of the best home improvement companies in North London. We also supply A-rated products to ensure that your home improvement offers the best security, energy efficiency and performance possible.

Over 30 years’ combined experience of the industry

Over 30 years of installation experience

Joel, our Managing Director, and Paul, our General Manager have over 30 years’ combined experience of the home improvement industry. Joel has been working in the industry for nearly 20 years, setting up Dolphin Windows ten years ago with a small team of family and friends.

From there, we’ve grown into one of London’s best home improvement installers thanks to our focus on providing high quality products and services for our customers.

Family-run company, no pushy salesmen

As a family-owned, family-run company, we pride ourselves on our friendly, no hassle approach to business. We don’t believe in employing high pressure, pushy salespeople. Instead, when you book a quote, Joel, our Managing Director or Paul, our General Manager, will visit you personally to talk through your project with you. We can even give you a quote there and then.

Network Veka approved installer

A Network Veka approved installer

We use market-leading Veka uPVC profile in our windows and doors, making our products some of the most superb currently available. Our four teams of fitters and craftsmen are highly skilled, and unlike many other companies, are directly employed by us. This means that we can assure the quality of your installation.

Dolphin are also a Network Veka approved installer. Network Veka is a prestigious organisation of highly skilled GGF installers of home improvement products, and membership is only afforded to installers whose standard of work is impeccable. This means you can rest assured in the quality of our workmanship.

Why choose Dolphin?

  • Friendly, no hassle approach to business
  • Family-run, family owned business
  • Extensive range of high quality windows, doors, conservatories
  • No pushy salesmen: instead all sales visits are conducted by either out Managing Director or General Manager
  • Network Veka approved installer, FENSA and Trustatrader accredited
  • A-rated products as standard, for exceptional performance and energy efficiency


Buying from Dolphin is simple

Buying from Dolphin is hassle free & satisfaction guaranteed

Contact us online or by phone for a free quote
We’ll get back to you the same day to arrange a home appointment, at a time convenient to you
We always aim to give you a quote there and then, followed up by a full written quote to confirm the details
After placing your order, a deposit is taken and a site survey completed within 48 hours
We’ll give you an installation date within 7 days of the deposit being placed
The installation takes place, with full payment taken only when you are fully happy