8-10 week supply & installation lead time

10 year warranty, 60 year life expectancy

Designed by you, made to measure by us

98% of our customers would recommend us

Whole window U-values as low as 0.8W/m2K

The truly stunning Glentruim Castle is situated near to the rivers Spey & Truim close to the village of Newtonmore in Invernesshire, Scotland. Located at the gateway of Caingorm, Britain’s largest National Park, the surrounding breath taking scenery can be seen from all aspects of the castle.

Dating back to the early 1840’s, the castle was originally built by Major Euan Macpherson and today is a privately owned holiday retreat, offering luxury self catering accommodation.

The beauty and grandeur of the castle makes a striking impact on the surrounding landscape so any renovation works had to be sympathetic to its character. A W Carpentry worked with the client on the replacement of the original timber windows and doors during the recent refurbishment of the castle.

Outside view of a snowy conservatory
French doors and sliding sash window

Why Bereco?
Having previously supplied windows for a cottage on the Glentruim Estate and with Deirdre, the Estate Manager, being so impressed with the result; Bereco were the only choice for the renovation of the castle itself.

The Heritage Range, offered the ideal solution to complement the historic appearance of the 18th century castle whilst offering 21st century performance.

The SlimLine double glazed units featured offer increased U-Values to improve energy efficiency whilst retaining the appearance of traditional single glazed windows and the experienced design technicians at Bereco were able to offer assistance with U -Value calculations and design bespoke products to meet the specific requirements of the project.

Close up of wooden window
Close up of a white sliding sash window
Large castle covered in snow

Interesting Fact

Impressively, the total refurbishment of the castle took just 1 year from start to completion. Glentruim has all the modern facilities expected of a luxury holiday retreat; the basement of the castle features a state of the art cinema, gym and spa area for guests to enjoy.

Special Requirements

As with all listed buildings, great care had to be taken with every aspect of the refurbishment of the castle and had to comply with the strict conservation requirements of Historic Scotland.

An energy survey of the castle concluded that significant heat was being lost through the old single glazed timber windows. It took 18 months to gain approval from Historic Scotland for the single glazing to be replaced by Bereco SlimLine specialist double glazed units to increase the U-Values, making them more thermally efficient.

It was an essential requirement that the aesthetics of the replacement windows were as closely matched to the original single glazed products as possible. This meant that bespoke products were required to retain the period aesthetics and look of single glazed windows whilst offering improved thermal performance.

“I am delighted by both the quality and the appearance of the Heritage Range products supplied by Bereco. They further enhance the appearance of Glentruim Castle and from an environmental and economical point of view the addition of Bereco SlimLine double glazing will most certainly save energy and reduce our heating bills each year.”

French doors to balcony in a class styled living area
Bespoke window on white entrance door

The experts in timber windows and doors

Whether you’re a homeowner working on a renovation project for your home, an architect looking for specific windows and doors, or a trade professional building new homes and properties, we offer a tailored service to help you budget, design, and order bespoke timber windows and doors.


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A really good company to deal with. Very helpful team of people from sales, technical support and delivery. Any time I called, I did not have to wait to speak to the right person and help was immediate. So not only great customer service but also terrific products, well designed and exact fit. Competitively priced.

Graham Roberts

I was very happy with Bereco’s service levels and the products are excellent, very good quality. I would have no hesitation in recommending them to others.

Simon Hazelton

Beautifully constructed windows which do the job perfectly. Handled Covid disruption effectively. Installation went smoothly. All in all a job very well done. Would recommend without reservation.


Visited the showroom last year and impressed with the finish and quality. Just as delighted with the windows and back door that we ordered. They look fabulous.


Our memberships & schemes

As a dedicated manufacturer of quality timber windows and doors, we are part of a number of specialist memberships and schemes. Check out the full list below.

The Anti-Greenwash Charter logo
ASBP logo
BlueSky Certification logo
FSC and Forests For All Forever
Good Homes Alliance logo
Secured by Design certificate
World Land Trust logo
Graphic of FENSA certificate

As seen in...

We’re pleased to announce our brand has featured in several national magazines and publications over the years. Here are some of the most recent places our products have been showcased.

The Times logo
Grand Designs Magazine logo
House and Garden logo
Homebuilding & Renovating logo
Construction Forum Magazine logo
Architects' Journal
Improve logo
Showhouse logo

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