Timber Sliding Sash Windows

Bereco timber sash windows not only embody traditional style they come with exceptional energy efficiency to meet the demands of today’s homes. Whether you are renovating a Victorian townhouse, an Edwardian cottage or a Georgian terrace you will find a sash window to suit the unique character of your home without compromising on security or weather performance.

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Watch our sash windows video for a summary of our ranges, features and bespoke options.

Sliding Sash Styles

White sliding sash windows with shutters

Sliding Sash Spiral Balance

Spiral Balance is our most popular style of sash window with maintenance-free, semi-concealed, in-frame spiral balances. The balances are available in either White, Brown, Black or Cream to match your chosen finish. The balances too can be completely concealed so they do not detract from the window’s traditional style.

large sliding sash windows with bars

Sliding Sash Cords & Weights

Often called box sash or sash and case windows, our cords & weights sash windows are the essence of traditional design; featuring lead or steel weights, nylon sash cords with exceptional tensile strength and draught-proof axel pulley wheels. They are available with an easy clean facility and feature internal access to both the internal and external sash weight pockets is for ease of future maintenance.

The Experts In Timber Windows & Doors

Whether you’re a homeowner working on the renovation of your own home, an architect looking to specify windows and doors for a project, 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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Professionals
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Choose sash windows that don't cost the earth.

Our sliding sash windows are naturally renewable, carbon neutral and made from only sustainably sourced FSC 100% certified softwood or hardwood. The care and attention we give to our timber before and during the manufacturing process ensures a 60 year+ life span, 10-year warranty and low maintenance for life.

Sustainability

Sliding Sash Window Features

Totally Bespoke

With totally bespoke sizes and designs, our sash windows can span widths up to 1.2 metres and reach heights of up to 2.7 metres using any combination of fixed and opening sashes in your choice of contemporary, traditional or heritage mouldings. Create traditional styles such as horizontal, cottage, Georgian, or marginal bar using our applied 16mm, 25mm and 35mm glazing bars.
View Style Ideas

Traditional style meets contemporary living

Our timber sash windows are fully compliant with the updated Part L Building Regulations. Our secure designs fully comply with Part Q and are approved by Secured by Design. Triple glazing with Uw values as low as 0.8W/m²K for low energy retrofits is also available. Create traditional styles such as horizontal, cottage, Georgian, or marginal bar using our applied 16mm, 25mm and 35mm glazing bars.

Replicating original features

Slim frames, timber only parting beads, timber staff beads/baton rods and travel stops, the option of deeper bottom sash rails and 7 styles of sash horn allow you to replicate any original sash design from the classical era.Create traditional styles such as horizontal, cottage, Georgian, or marginal bar using our applied 16mm, 25mm and 35mm glazing bars.

Design a home from the classical era

Curved head frames, curved on plan frames, curved sashes and even curved glass are available Dividing or applied bars in varying widths mean we can replicate any of the classical bar patterns.Create traditional styles such as horizontal, cottage, Georgian, or marginal bar using our applied 16mm, 25mm and 35mm glazing bars.

Certified noise reducing sash windows

Our sash windows are the only certified noise-reducing timber sash windows offering overall window noise reduction up to 42dB and incorporating glazing with a dB rating up to 47dB; perfect for reducing noise from road, rail or aircraft as well as antisocial noise in inner cities.

Add a splash of colour

Every sliding sash window is beautifully factory finished using the most environmentally friendly water-based paint or stain. Choose from any RAL Classic, RAL Design, NCS and BS colour charts or match to Farrow & Ball, Earthborn or Fired Earth colour collections. With single or dual colour options you can create the perfect match to the exterior facade and interior decor of the property.

Mock sash

We offer both sliding sash look alike (side hung casement) and regency casement (top hung casement) mock sash designs in our range of contemporary lipped casement windows. This style of windows is ideal when the sash window look is desired but impractical when working with narrow reveals and where you must comply with escape regulations but a traditional sash window doesn’t offer the clear opening needed.

Handles & locks

Our timber sash windows come fitted with fitch fasteners, hook lifts and opening restrictors. Choose from 2 designs of fitch fasteners, The Fitch Lock or the Brighton Fastener; 3 designs of opening restrictor the key-operated Vent Lock, the push and twist Vent Lock or the Angel Vent Lock. Our cords and weights windows also come with round end pulley wheels and optional D handles and ring lifts. With single or dual colour options you can create the perfect match to the exterior facade and interior decor of the property.

Obscure glazing

Glazing is an important design element for any project and can make all the difference when creating a feature window or door. A variety of obscure glazing patterns are available with different designs offering varying privacy levels (rated 1-5 with 5 being the highest level).

Stippolyte Obscure Glazing
Stippolyte (Level 4)
Niagra Obscure Glazing
Niagra (Level 5)
Kora Obscure Glazing
Kora (Level 4)
Kocie Obscure Glazing
Kocie (Level 4)
Frosted Obscure Glazing
Frosted (Level 5)
Delta Obscure Glazing
Delta (Level 5)
Cotswold Obscure Glazing
Cotswold (Level 5)
Chinchilla Obscure Glazing
Chinchilla (Level 3)
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Bereco Softwood European Redwood Section
Redwood
Bereco Hardwood Dark Red Meranti Section
Hardwood
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Redwood or hardwood timber

All our products are manufactured using FSC100% engineered laminated timber. We offer both redwood (Scots Pine) and hardwood (Dark Red Meranti) – both with the same extensive warranty. When comparing the two, our hardwood has a more of an open grain structure meaning it gives more of a textured finish, particularly when stained.

"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."
Linda
"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."
Phil
"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
"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’ve used Bereco for a few projects and the product and service is always good, would definitely recommend."
Stephen W
"The quality of the windows and doors together with our general communications were excellent. We are very happy with the final product."
PamKen Ltd
"The windows are beautiful, I can't stop looking at them rather than through them!!"
Richard
"Excellent Service"
Vicki
"We ordered an extra large bespoke front door with side and top windows. Bereco have been very efficient and timely. Communication has been excellent and they have manufactured and delivered on time. The door looks amazing. I will definitely use them again."
Mr Zaman
"Excellent quality timber windows & doors available fully finished and fully glazed. Fantastic customer service from all departments with very friendly and efficient staff."
Liam Pollard
"Cannot recommend them highly enough from the initial contact through to deliver to the quality. the windows are superb. they aren't the cheapest but you get what you pay for. if you want the highest quality windows and doors with the best support then Bereco is for you."
Stephen Jamieson
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Technical Downloads

  • Section Details
  • NBS Specification
  • U-value Tables

All available for download at the Bereco Resource Centre

  • Secured by Design
  • Bluesky certified BS644 General Window Performance
  • BS6180:2011 and BS6399-1:1996 compliant
  • BlueSky Timber High Performance Window Scheme
  • FSC 100% certified timber
  • BlueSky PAS24:2016 Enhance Security Windows
  • BlueSky Noise Reducing Windows up to 42dB over all window
  • UKCA Mark


View our certification

  • UW RANGE: 0.8 – 1.4 W/m²K
  • ACOUSTIC RANGE: 29 – 42dB
  • G-VALUE RANGE: 0.50 – 0.65
  • AIR PERMEABILITY: 600 PA (CLASS 3)
  • WATER TIGHTNESS: 250 PA (CLASS 6A)
  • WIND LOAD RESISTANCE: 2000 PA (CLASS 5C)
  • EXPOSURE CATEGORY: 2000 PA
  • AIR LEAKAGE: 0.8M³ per hour

Bereco Resource Centre 

The Experts In Timber Windows & Doors

Whether you’re a homeowner working on the renovation of your own home, an architect looking to specify windows and doors for a project, 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.

Homeowners
Professionals

Sliding Sash Windows FAQ's

Sashes slide vertically within the frame. At Bereco we offer both cords & weights, which is a traditional weight and pulley system, as well as spiral balances which are a tensioned spring mechanism where a coiled spring is discretely concealed inside an encased coloured tube to match the windows finish.
We offer our sash windows in traditional cords & weights or a modern spiral balance method of operation, with traditional or heritage style mouldings and bars that are perfect for replacement or conservation areas.
They are a completely different opening mechanism; the cords & weights option has wider jambs in which to hold the lead or steel weight, but there is no difference in the warranty we offer.

At Bereco we don’t offer a tilt facility; this style of window usually comes with unsightly and non-compressing brush seals that can affect weather performance. However, our cords & weights option is available with an easy clean system that allows the bottom sash to open inwards side hung.

We can offer this, however, both our hardwood and redwood timbers carry the same warranty, as they are engineered defect-free timber that is preservative-treated and fully factory finished. At Bereco every individual timber element of our windows is treated with preservative using the most technologically advanced coating systems from Teknos, which is why we can offer our 30-year warranty against rot and fungal decay.
No you don’t, but if you do want them we have 7 different styles to choose from.

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