Chris Farrington, Cameron Gunn and Lee Manning of ReSolve Advisory Limited were appointed as Joint Administrators of Everest 2020 Limited (“Everest”) on 24 April 2024.

If you have any queries in relation to the business and/or administration, please contact

Chris, Cameron and Lee are licensed to act as Insolvency Practitioners in the United Kingdom by the Institute of Chartered Accountants in England and Wales and, along with their staff, act without personal liability at all times.

Licenced Insolvency Practitioners who are appointed as Administrators, and their staff, act as agents of the company over which they are appointed. A list of ReSolve’s licensed Insolvency Practitioners can be found on our website.

Double glazing windows

Everest Windows & Doors Wales

Double Glazing, Triple Glazing & Front Doors for Houses in Wales

  • Covering all of Wales
  • Bespoke products made in Wales
  • Built to last with long-lasting guarantees

Everest Windows & Doors in Wales

At Everest, we offer coverage across Wales and Britain with factories and installation centres in Treherbert and Pontyclun. Representatives near you work to fit around your needs with design appointments available at a time to suit you, including evenings and weekends. From initial design consultation to manufacturing and installation, our expert teams take care of it all, every step of the way.

We offer core products of windows, doors and conservatories. All products are bespoke, made to your individual needs and the combination of styles, materials, colours and finishes means you have hundreds of options to make your perfect windows or door. All Everest products are made-to-measure to ensure a perfect fit.

With Everest, you can rest assured you’re getting windows and doors that meet the British Standard for security so your home is offered the highest level of protection. Our windows and doors are accredited with Secured by Design and PAS 24 which tests every aspect of security.

We recognise that energy efficiency is essential and we're committed to developing the most energy efficient double glazing and triple glazed windows on the market with the lowest U-values in the UK.

Everest has been manufacturing windows for over 50 years. We are proud that all our Everest products are designed and manufactured in Britain, at our factory in Treherbert, Wales.

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Meet the team in Wales

Everest Products

Windows →

Double glazing or triple glazed windows in a range of styles & colours made-to-measure

Doors →

Meets British Security Standards, reduce draughts & weather-resistant in a wide range of styles

Conservatories →

Enjoyable all year round, fully bespoke to your needs and guaranteed for 10 years

The Everest Factory in Wales

The Welsh factory in Treherbert was established in 1972. Everest originally had several production facilities across Britain, but went on to focus all manufacturing in Wales.

Everest has supported British manufacturing from the beginning. We have high standards for our windows and doors and keep tight control over the manufacturing to ensure we maintain the quality we are known for.

Brian Morgan, who started working at the factory in 1980 said ‘The personal touch is nice – we are making a bespoke product for our customers and when the product is made in a factory with people who care deeply about the work that they do and pull together for one another, I feel that is important.

Having been a local employer for over 50 years, we have always encouraged a family atmosphere in the factory and Treherbert is such a tight-knit community that everyone knows everyone. Three generations of one family have worked for us, and friends have worked with us – fathers and sons and brothers and cousins.

Everest is an integrated part of the community in the upper Rhondda Fawr Valley and proud supporters of the Baglan FC football team in Treherbert. Wales Manager, Rob Page, officially opened the newly refurbished football ground in 2023. With a prevalence of salmon fishing in the area, we also sponsor the Welsh team in the International fly fishing championships.

Everest are proud to say our products are made in Treherbert in Wales.

Everest in Wales

Areas We Cover in Wales

Areas in Wales covered include Blaenau Gwent, Bridgend, Caerphilly, Cardiff, Carmarthenshire, Ceredigion, Conwy, Denbighshire, Flintshire, Gwynedd, Isle of Anglesey, Merthyr Tydfill, Monmouthshire, Neath Port Talbot, Newport, Pembrokeshire, Powys, Rhondda Cynon Taff, Swansea, Torfaen, Vale of Glamorgan, Wrexham

Request Your Free Quote Today

Get in touch with our team today for a free, no-obligation quote.

Welsh house styles

House styles in Wales

Welsh house styles

House styles in Wales

Architectural Styles in Wales

Wales has a considerable proportion of rural and remote areas with plenty of hills and valleys featuring stone-built dwellings. In coastal areas, the stone-built terrace with bay windows is a typical style. For the towns and cities of Wales, house styles are typically 1930s and 1960s semis and millennium style new build houses.

Welsh stone cottages

The Welsh countryside has plenty of traditional stone-built dwellings and cottages. Most of these properties have small windows featuring leaded glass or Georgian bars.

A traditional farmhouse dwelling in mid and south Wales was the Longhouse which is a long cottage with a passageway in between to house animals at one end and people in the other. The cottage is styled with white limewash walls, slate roofs and small windows.

Another type of traditional stone cottage is the Snowdonia house. A two-storey stone-built cottage with a distinctive silhouette of two chimney stacks - one placed at each gable end. Slate roofs and small windows are characteristic of this type of cottage.

For Welsh stone Cottages, we recommend:

Windows: Wooden flush casement windows (sometimes uPVC) with traditional Georgian bar styling or leaded glass.

Doors: Composite door or stable door in white, cream, brown or grey muted shades.

Victorian terrace coastal houses

Victorian terraced houses can be found in coastal towns across Wales, such as Llandudno.

Terraced houses feature bay windows on the front living room that offer panoramic views. The original windows would be wooden sash windows and over time most of these have been replaced with uPVC casement windows.

Houses near the coast are often rendered and painted in pastel colours. To complement a coloured house, white windows and a brightly painted front door look the best.

For Victorian properties, we recommend:

Windows: Sash windows in UPVC or wooden sash windows, in white.

Doors: Composite panel door with glazed upper panels and stained glass, in bright colours. For the coast, bright turquoise, pinks, greens and blues are popular choices.

1930s and 1960s semi-detached house

Across towns and suburban areas of Wales, such as Wrexham, Cardiff and Swansea is the semi-detached house.

The 1930s semi has half brick and half render or pebble dash walls. The 1960s house has walls of light brown, grey or buff-coloured brick half-clad with weatherboards or concrete hanging tiles.

Earlier 1930s semis usually have faceted bay windows sometimes featuring leaded glass. In the 60s, windows became bigger in size with large casement picture windows, often in aluminium frames.


For semi-detached properties, we recommend:

Windows: Casement windows in uPVC or aluminium and leaded glass or internal Georgian bars with frames in white, grey or black.

Door: Composite panel door with glazed panels and decorative glass. Early 1930s properties suit traditional colours such as white, black, brown and blue, or a natural varnished timber finish. 1960s houses suit brighter colours for doors.

Window made in Britain

Why choose Everest windows?

Designed & Made In Wales

All Everest products are manufactured in Wales at our factory in Treherbert. Unlike other suppliers, we make the entire window or door at the factory in Wales and don't import cheaper door slabs or window frames premade. We work hard to deliver nothing less than the highest quality products.

Made in Britain

Guaranteed for peace of mind

We're so confident in the quality of our products that we offer some of the longest guarantees in the industry. In fact, we're the only major home improvement company to offer lifetime guarantees as an upgrade on our uPVC exclusives double and triple glazed windows.

Window guarantees

Everest Windows

Double Glazing →

Our high-quality double glazed windows will keep your home warm, safe and quiet.

Triple Glazing →

Our triple glazed windows are our most energy-efficient, with an A++ energy rating.

Everest Popular Door Styles

Front & Back Doors →

All Everest front doors are made-to-measure for a perfect fit

Patio Doors →

Let light flood into your living space with either modern aluminium or uPVC.

Bi-Fold Doors →

Auminium bi-fold doors offer a slim profile and a sleek modern look.

Everest Customer Reviews

Request Your Free Quote Today

Get in touch with our team today to book your free quotation appointment with one of our local expert consultants. They will offer ideas and practical solutions, show you samples of our products and provide an accurate, no-obligation quote.