Hertfordshire Double Glazing, Doors, Conservatories & More

Improving homes in Hertfordshire for over 50 years

Improving homes in Hertfordshire

Double Glazed Windows, Doors & Conservatories in Hertfordshire

We may be a nationally recognised brand with a great deal of experience to our name but most importantly we are local to you. 

Our Hertfordshire experts are on hand.

Our current team operating in the South is made up of 140 installers and 200 home improvement consultants. They help make up our local service for the area and have completed an impressive 65,000 installations in the last two years alone.

When it comes to home improvements, we have something to suit all with an impressive array of options covering everything from conservatories and double-glazed windows to new doors and more.

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Meet the team in Hertfordshire


Craig has been with Everest for well over 20 years, joining the company in 1996. With so much experience, hes the fount of all knowledge when it comes to our home improvement products, and can identify at a glance what kind of roof trim you might need, and whether timber, aluminium or uPVC would be the right choice for your casement windows or front door. Craig is also a member of the Red Cross. He lives in St Albans and is responsible for all of the region, including Hemel Hempstead, Kings Langley, Abbots Langley and Watford.


Craig lives in Dudley and is a season ticket holder at Aston Villa - he goes to both home and away matches with his daughter, also a big fan. As for Everest, he sells all of our best-known home improvements, including French, patio, entrance and bi-fold doors, plus sash and casement windows, as well as secondary glazing and other products like security systems and garage doors. Having joined us in 2013, Craig has chalked up many happy customers in Luton, Hitchin, Bedford, Hoddesdon and Stevenage.


Toddington based David started as a Consultant with Everest in 2018 and has been helping homeowners in need in and around Stevenage ever since. Selling market leading windows, doors and roofline products is quite a change from David�??s previous job, working as a dog handler in a sled team in Fairbanks, Alaska! When he�??s off-duty, David can often be found at the casino, collecting chips to add to his impressive collection. You can bet your bottom dollar David will come up trumps with the perfect solution to your home improvement problems.


Kwabena joined Everest in 2016 and looks after many areas just to the North and West of London. That includes Ruislip, Northolt, Greenford, Hayes and Uxbridge. His responsibilities include all of our main home improvement ranges, such as dual turn, sash and casement windows, as well as French, patio, stable and front doors, plus secondary glazing. He can also tell you about driveways, artificial grass, security systems and secondary glazing. His favourite book is a good one - in fact its the good one - The Bible.


Mark first joined Everest in 1998 and looks after all of our core range. This includes roofline, patios, garage doors, driveways, artificial grass, conservatories, orangeries, glass extensions and our ever-popular replacement windows and doors, plus secondary glazing. He lives in St Albans and covers Watford, Hatfield, Hemel Hempstead and Beaconsfield, as well as the many attractive villages in this area. He says that his favourite films are the Rocky series, but only up to Rocky IV, which puts him in agreement with the critics. Like the hero of those films, he says that I don't like to lose!


Paul is definitely an old rocker at heart. For one thing, he plays a fairly mean axe himself, for another, his favourite album is Humble Pies Rockin the Fillmore. And having joined Everest in 1979, hes definitely the right vintage. Mind you, with coming up to 40 years with us, theres nothing that he doesnt know about our conservatories and orangeries, which is what he specialises in, whether its uPVC, timber or aluminium examples. Paul lives in Hitchin, covering towns such as Stevenage, Enfield and Welwyn Garden City.


Growing up in Switzerland with American and English parents, who would have imagined that Rebecca would end up living in Welham Green? But she does, and also loves �??all country music (but with her cosmopolitan background, which country, we wonder?!). She joined Everest in 2016, and has customers in places like Watford, Barnet, Hemel Hempstead, Cockfosters and even Cuffley, which is where the Everest HQ is. Windows, doors, flat roofs, garage doors, security systems, whatever youre after, Rebecca can help.


Joining us in 2013, Sarah is responsible for many towns in the region, including Stevenage, Harlow, Harpenden, St Albans and her home town of Cheshunt. Her favourite film is the Julia Roberts rom-com Eat Pray Love, and outside work Sarah likes nothing better than scuba diving. Were not sure if shes found any pearls in the ocean, but she certainly has plenty of them to tell you about on dry land, including our uPVC, timber and aluminium windows and doors, plus roof trim, secondary glazing, flat roofs, driveways and more.


Stephen is a rap fan, his favourite track being Pure by T Mo - and not surprisingly is great when it comes to talking about any of our home improvements (although as far as we know he doesnt actually rap about any himself). But hes a great guy, and he can help you whether youre thinking about some new windows or a front door, or a new conservatory or replacement roof for your current one. He joined us in 2012, and has introduced many customers in High Wycombe, Watford, Northwood and St Albans to Everest products.


Shalinders favourite TV series is the Unusual Suspects, but when it comes to the products he specialises in, its definitely the usual suspects - French, bi-fold, patio, stable and entrance doors, plus dual turn, tilt & turn, casement and sash windows, plus other key lines such as flat roofs, garage doors and roof trim. He lives in Bedford, while his customers are typically from places like St Albans, Wheathampstead, High Wycombe, Uxbridge and Hayes. Outside of work hes a keen runner, and also trains other runners to compete in marathons.


Tim joined Everest in 2011 and lives in Watford, His customers generally reside in Hertfordshire and Buckinghamshire, including in St Albans, Amersham, Rickmansworth and Chorleywood. Tim is responsible for all of our best-known products, including sash, dual turn, casement and tilt & turn windows, plus patio, entrance, French, stable and bi-fold doors. He can also tell you about our secondary glazing, patios, driveways, flat roofs and alarm systems. His favourite film is the Ealing comedy classic Kind Hearts and Coronets.

Browse our products

Everest black window


  • A range of styles & colours
  • Made-to-measure
  • Market-leading security
  • Thermally efficient
  • Double or triple glazing
Everest doors


  • Meets British Security Standards
  • Reduce draughts
  • Wide range of styles & options
  • Beautiful range of furniture
  • Market-leading guarantees
Everest Edwardian conservatory


  • Enjoyable all year round
  • We take care of planning
  • Fully bespoke to you
  • Guaranteed for 10 years
  • Traditional or contemporary
Everest roofline


  • Reliable weatherproofing
  • Many colours & finishes
  • Effectively manage rainwater
  • Maintenance-free
  • High-quality materials
Everest garage doors

Garage doors

  • A choice of 4 opening options
  • Manual or automatic operation
  • Made-to-measure
  • Practical & attractive
  • Range of colours
Everest driveways


  • Built on solid foundations
  • Responsible drainage facilities
  • Stunning patterns & designs
  • Optional kerbs, edging & steps
  • Guaranteed for 10 years
Everest artificial grass

Artificial grass

  • A realistic alternative to turf
  • Made-to-measure
  • Safe for children & pets
  • Maintenance-free
  • Guaranteed for 10 years
Everest security

Security systems

  • Monitored 24 hours a day
  • Fully customisable
  • Wireless systems
  • User friendly
  • Guaranteed for up to 5 years
Outside view of an Everest conservatory

Installed in Hertfordshire

"We were originally thinking about completing the conservatory as a self-build project but after seeing Everest’s Sales Consultant and hearing how the project management team would take care of everything – we changed our minds and decided to go with the professionals. We weren’t disappointed. The project management was spot on, with great communication and a good plan which they stuck to religiously with no delays throughout the build."

The Spraggs, Hertfordshire

Read the full case study ❯

The latest Everest customer reviews