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Hertfordshire Double Glazing, Doors, Conservatories & More

Improving homes in Hertfordshire for over 50 years

Improving homes in Hertfordshire for over 50 years

Double Glazed Windows, Doors & Conservatories in Hertfordshire

Here at Everest, we’ve been improving homes in and around Hertfordshire since 1965 and this has allowed us to accumulate a great deal of experience in the field.

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.

Get a FREE quote

All our products are bespoke, so to provide an accurate quote an appointment is required. Simply fill in the form below and let us know a time that suits you. Partial or full completion of the form will stimulate a follow up to confirm the appointment.

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Your details

All our products are bespoke, so to provide an accurate quote an appointment is required. Simply fill in the form below and let us know a time that suits you. Partial or full completion of the form will stimulate a follow up to confirm the appointment.

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If you require a date that's unavailable, please call us on 01707 830 275 and we will happily book this for you.

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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.


Dennis has been with Everest for well over 30 years, first joining us in 1985. Since then hes seen plenty of changes, not least in our products, but it also means he knows them inside out, from the latest casement, dual turn or sash windows though to bi-fold, French patio and entrance doors. He can also tell you everything about driveways, garage doors and flat roofs. He lives in Bushey, and over the decades has found many happy customers in Watford, St Albans and Hemel Hempstead. His favourite film is One Flew over the Cuckoos Nest.


Awarded one of our ‘Top Salesman spots a few years ago, Eddie hails from Harpenden and is a real Everest veteran of over 25 years service. He knows everything there is to know about all Everest products, and is just as happy selling conservatories in St Albans as windows in Watford or doors in Berkhampstead. Outside work, his favourite film is Gladiator, and he also enjoys painting pictures. So if you would like him to come and improve the landscape of your home in some way, hes ready and waiting for your appointment.


Jack is a big Simon & Garfunkel fan and is often to be found meeting customers in Enfield, Barnet, Potters Bar or Borehamwood. A lot of his customers live in terraced or semi-detached houses, many of which are period properties, so hes particularly good at helping them make the right choices when it comes to casement or sash windows, or entrance, bi-fold or patio doors, but also handles other useful products such as driveways and garage doors. His claim to fame is that he once played county-standard table tennis.


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.


<p>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 &lsquo;I dont like to lose!</p>


Matthew has now been with Everest for well over 10 years, and is responsible for all of our main home improvement products. These include uPVC, timber, aluminium and composite doors, plus timber, uPVC and aluminium windows, as well as roof trim, plus flat roofs, patios, driveways and security systems. A big fan of that modern classic The Shawshank Redemption, Matthew lives in Sandy. He also has a twin. His numerous customers are from all over the region, including places such as Baldock, Stevenage, Luton and St Albans.


With an Italian father, a Polish mother and a German wife, Michael is nothing if not a man of the world. But his relaxed manner and all-round knowledge make him a favourite with customers as far apart as Bedford, Bishops Stortford, Knebworth, Enfield and Welwyn Garden City, where he sells all of our core products such as windows and doors, as well as driveways. But he likes to get away too, often flying to new and interesting places. Perhaps thats one reason why his favourite book is The Hitchhikers Guide to the Galaxy. Hes been with Everest since 2009.


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.


Paul joined Everest Home Improvements in 2016 and lives in Aylesbury, as do many of his customers, who also come from towns such as Bedford, Luton and Milton Keynes. In his spare time hes a keen guitar player, while work-wise hes well qualified to set the right note with any of our best-known products . These include casement, dual turn and sash windows, plus bi-fold patio, stable, French and front doors, whether in uPVC, aluminium or timber. He can also tell you about flat roofs, driveways, roof trim and much else besides.


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.


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.


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.


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 and colours
  • Made-to-measure
  • Market leading security
  • Thermally efficient
  • Double or triple glazing
Everest doors


  • Secured by Design
  • Reduce draughts
  • Wide range of styles and options
  • Beautiful range of furniture
  • Lifetime guarantees
Everest Edwardian conservatory


  • Can be enjoyed all year round
  • We take care of planning
  • Traditional and contemporary styles
  • Fully bespoke to your requirements
  • 10 year guarantee for peace of mind
Everest roofline


  • Reliable weatherproofing
  • Many colours and woodgrain finishes
  • Effectively manage rain water
  • Maintenance free
  • High quality materials
Everest garage doors

Garage doors

  • Side hinged, one-piece, roller and sectional door options
  • Manual or automatic operation
  • Made-to-measure
  • Practical and attractive
  • Range of colours
Everest driveways


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

Artifical grass

  • Realistic alternative to turf
  • Made-to-measure
  • Safe for children and 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