Everest Conservatories Review 2026

Good

• Everest conservatories come with 10 years' cover on 'every other aspect ... including fixtures, fittings and the installation', and 15 years against fog and condensation in the sealed units (everest.co.uk).
• Everest windows and doors have an insurance-backed guarantee that pays out if Everest stops trading, up to £50,000 or the original installation cost, whichever is less. It's administered by Home Improvement Protection (everest.co.uk).
• Everest's operator, ASHI Group Limited, is a FENSA Approved Installer (Reg 13229), and its FENSA listing includes conservatories and orangeries (fensa.org.uk).
• ASHI Group Limited has held TrustMark licence 1607757 for 5+ years, through FENSA (trustmark.org.uk).
• Everest says it is a Glass & Glazing Federation member, which gives customers access to the GGF complaints service (everest.co.uk).
• The company behind Everest, ASHI Group Limited, is Active at Companies House. It was incorporated on 17 September 1990 and its filings are up to date (find-and-update.company-information.service.gov.uk).
• Everest says its planning department handles planning permission, building regulations and building control for new conservatories (everest.co.uk).

Not so good

• Everest's guide price for a 3x3m conservatory is from £27,000 (£31,000 with an opening into the house) (everest.co.uk). Checkatrade's June 2026 figures put a larger 3.5m x 3.5m uPVC lean-to at £9,000–£11,500 (checkatrade.com).
• Everest's replacement conservatory roof guide price is from £15,000 (everest.co.uk). Checkatrade gives an average of around £10,000 (checkatrade.com).
• Trustpilot rates Everest 2.7 out of 5 ('Poor') from 13,505 reviews. Trustpilot says the company hasn't invited reviews recently and has replied to 46% of negative reviews (uk.trustpilot.com).
• Trustpilot's AI summary of 221 recent reviews says most reviewers were unhappy and often mentioned missed appointments, poor communication and trouble getting issues fixed after installation (uk.trustpilot.com).
• The insurance-backed guarantee is worded for 'all windows and doors' and doesn't mention conservatories, so ask Everest in writing whether it covers your project (everest.co.uk).
• The previous Everest company, Everest 2020 Ltd, went into administration on 24 April 2024. Anglian (ASHI Group) bought the brand, order book and IP on 21 May 2024 (anglianhome.co.uk).
• That company, now called EV20 Realisations Limited, is still 'In Administration', with accounts and its confirmation statement overdue (find-and-update.company-information.service.gov.uk).
• FENSA suspended Everest 2020 as an Approved Installer after it went into administration. Customers from before that date are told to try a Section 75 claim before claiming on the Installsure IBG (fensa.org.uk).
• Cash orders need a 25% deposit. The finance example for a £24,385.99 conservatory at 11.9% APR representative costs £36,626.52 in total over 96 months (everest.co.uk).
• The Everest brand's previous operating company entered administration in June 2020, and its successor Everest 2020 Ltd followed on 24 April 2024, before the brand was bought by ASHI Group (moneysavingexpert.com)

Introduction

Are you looking for an unbiased review of Everest?

Then you’re in the right place.

Everest offers a wide variety of solutions for their customers, from big projects like bespoke conservatories and orangeries to smaller items, such as doors and windows.

In this review, you’ll find out everything you need to know about Everest, including their background and what products they offer.

Everest Overview

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Everest has a history that spans back around 60 years, specialising in providing homes with windows, doors, conservatories, orangeries, and even security systems and artificial grass.

With a 4.4/5 score on Trustpilot from over 12,900 reviews, Everest is a popular and well-regarded brand.

Everest Cost and Fees

Each product is designed and created to be entirely bespoke to your needs, which is why they don’t offer any clear pricing on their website.

But they do give a range of average costs. For example, based on this overview of new window costs on their site, a uPVC casement window can range from £700-1,800.

For conservatories, they published these average costs based on Which? prices.

• A 3x3m conservatory costs from £27,000 (no opening made into the house).
• A 3x3m conservatory costs from £31,000 (with an opening made into the house).
• The average total cost of a conservatory is £15,000 and can reach up to £100,000.

Everest Core Services

Windows

Everest’s windows are thermally efficient, long-lasting, low-maintenance, and come in various designs to fit different interiors.

They come in these styles:

• Casement
• Sash
• Secondary
• Tilt and turn
• Dual turn

The main difference between these windows is their appearance and how they open. For example, sash windows are more suitable for period homes, such as Victorian properties, while tilt and turn windows are far more sleek and modern in design.

Customers also can choose from these materials:

• uPVC
• Timber
• Aluminium

uPVC window can be created in various colours, such as white, black, grey, green, and oak. Their windows also has A+ rated double glazing, but you can further upgrade them to A++ triple glazing for added protection and insulation.

These windows can help retain heat in the winter, keep you cool in the summer, and help save on energy bills.

Doors

Everest offers entrance, back, garage, and porch/patio doors. Each door is built to add character to your home, comes in a wide choice of colours, meets all of the security standards, and has a 10-year guarantee.

Entrance

Entrance doors can come in uPVC, timber, or aluminium, with composite designs that range from contemporary to traditional.

Not only are they aesthetically pleasing with a range of great colours, they also comply with British standard security measures.

Bi-folding

Bi-folding doors are a set of two doors or more which fold flat once opened. These can also slide open and come in contemporary and sleek designs.

These doors can be fully opened, connecting your home to your exteriors or garden seamlessly. Everest’s bi-folding doors are incredibly secure and can withstand a 200-lb punching bag, which you can see on their website here.

Patio Doors

Patio doors from Everest come with these benefits:

• Drought-resistant seals that protect against the weather and noise
• Low-emission (low-E) glass that reflects heat into your room
• Multi-point locking systems for added security and peace of mind
• 10-year guarantee
• Resistant to rot, flaking, or peeling

Garage Doors

Your garage door doesn’t need to be plain or boring, especially when these models can come in various sizes, styles, and materials.

Here are the types of Everest garage doors:

• Roller
• Sectional
• One-piece
• Side-hinged

These doors are designed to be tough and durable, and have fully integrated locking systems.

Conservatories

Conservatories are some of the most popular choices for Everest customers due to the high-quality materials, bespoke designs, longevity, and aesthetic looks.

These structures are a kind of extension of your home. However, instead of being built from brick and traditional building materials, they might be made out of a uPVC frame and glass. Sometimes, they have full-length glass windows to help you see your garden better.

They come in four main styles:

• Victorian
• Edwardian
• Cheltenham
• York

Each one of these designs is specific to a period or a particular designer. So, you can often find something that matches your tastes or you can have one designed for you.

Modern conservatories are so weather-resistant and drought-free that they could even be used as a lounge or even a bedroom.

• ✔ Fully guaranteed
• ✔ Customisable
• ✔ Double- or triple-glazed for superior insulation
• ✔ A variety of styles/colours

Everest Reviews

Everest has an Excellent 4.4/5 coming from over 12,900 reviews, as of March 2024. About 71% are in the 5-star category while only 17% are in the 1-star group.

Although online reviews aren’t always accurate, you should still consider them when deciding which conservatory or supplier to choose.

Positive Everest Review

Ann M. on Trustpilot: “Excellent service throughout. Very pleased with the final result.”

Negative Everest Review

April on Trustpilot: “I am still waiting three months later for the faulty lock to be replaced. The last engineer didn’t turn up, and customer services NEVER return your call.”

Everest Customer Support

Here’s how you can get in touch with Everest.

• Call 01707 830 732 for quotes, 8am-6pm.
• Call 0800 020 9895 for sales consultations.
• Call 01707 933680 for complaints 9am-5pm, Monday-Friday only.
• Fill out this form to request a callback.
• Fill out this form for customer enquiries.

Comparing Everest

Conclusion

Everest could be an excellent choice if you want a wide range of choices, completely customisable conservatories, and additional products or accessories. But before you make any decisions, make sure that you compare all your available options.

Check out the tool at the top of the page to compare all of your conservatory options within minutes, or take a quick look at the guides on this site.