6-8 week supply only lead time

8-10 week supply & installation lead time

10 year warranty, 60 year life expectancy

Designed by you, made to measure by us

97% of our customers would recommend us

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

The dedicated Bereco sawmill

We are completely unique in that we have our own dedicated sawmill which supplies our factory with sawn, kiln dried and finger-jointed laminated sections for our wooden windows and doors.

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Our Process

Pile of tree logs on the back of a lorry

From the forest to the mill yard

Harvested FSC® 100% timber is delivered from the nearby forest to the mill yard.

A worker sorting tree logs

Log sorting

Logs are sorted by heartwood content, size and diameter ready for processing through the mill.

De-barking and sawn timber production

De-barking and sawn timber production

Bark is removed from the cut and sorted logs, and the correct width of boards are cut for each different window and door style we make.

Stacking and kiln drying

Stacking and kiln drying

Sawn timber is stacked in the yard ready for the kilns. Our sawmill operation has five kilns to dry the timber to a specific moisture content. Between 12% and 15% is the optimum moisture level we use for stability which is a necessity in structural timbers used for construction.

Planing of timber

Planing of timber

Once dried the timber enters the laminated timber line, or Glulam line, as they are often called. Here the timber is planed first of all to remove all rough edges.

Removing defects

Once planed, our trained timber operatives mark out sections on the wood to highlight defects such as knots and shakes. The machine then x-rays the surface of the planed timber looking for these highlighted lines and makes a cut where the line is creating defect free timber sections.

Finger jointing

Finger jointing

Now the knots and shakes have been eliminated, the sections that remain are finger jointed. Finger jointing is recognised as the most stable method of jointing together timber into lengths. It creates a incredibly strong bond between two sections of timber that is considered stronger than the timber itself, as a solid piece.

Wood being glued and laminated at the saw mill

Glueing and laminating

The finger jointed sections are then glued and closed together piece by piece under the pressure of a machine creating a perfect flush seam. Sections are then glued and laminated together for stability in three layers. The grain of the central layer runs in opposing direction of the outer layers.

Quality control and packaging for production

Each completed finger jointed and laminated timber section is inspected for quality, removing anything that is not to standard. Finally the sections are packaged, labelled and prepped to be shipped into the factory for production to begin.

Frequently asked questions

Why do we have a sawmill?

The key driver for the adoption of the sawmill into our supply chain was to improve our control of the timber section sizes. It is the norm for wooden window and door suppliers to use ready-made sections of laminated timber from sawmills to standard section sizes to make their windows and doors.

Additionally, in 2006 we saw unprecedented demand and an acute shortage of redwood pine laminated sections. As 90% of timber used in UK construction is redwood, these supply problems drastically extended the lead times of all wood-manufactured products. Not only did this cause a major inconvenience but also severe delays on site. As a result, we actively sought to reduce the risk going forward.

Having our own sawmill simply means we always have superior timber stock available in the right section sizes. It is designed especially for homes in the UK and meets the exceptional quality standards that we impose on ourselves.

Fully certified laminated timber

The redwood raw material we use is FSC® 100% from FSC® certified forests. Our sawmill plant is also a certified manufacturer and supplier of laminated timber.

Innovative solutions for waste management

Wood waste that is generated in the production process of our timber windows and doors is transported by a silo system to a concrete silo with a capacity of 500 m3.

From here it is automatically collected by the fuel supply system to the boiler. Out of the heating season, surplus wood waste is briquetted for use in the furnaces and fireplaces of the local village.

Timber pallets

Nothing goes to waste at Bereco. All of our timber windows and doors are delivered on FSC® 100% timber pallets which are made from the wood that comes from our forest and the offcuts from the sawmill. These pallets are then collected post-delivery, where possible, and reused for future deliveries – extending their service life before eventually being recycled.

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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Order corner samples of popular products including stain, ironmongery and bars delivered straight to your front door.

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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
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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