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

Authentic timber sliding sash windows for Surrey homes

Bereco timber sliding sash windows not only embody a traditional style but they also achieve excellent energy efficiency to meet the demands of homes within Surrey and the surrounding areas. Whether you’re renovating a Victorian townhouse, an Edwardian cottage or a Georgian terrace, you’re sure to find new windows that perfectly suit your Surrey home’s unique character – without compromising security or weather performance.

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Garden view of timber sliding sash windows

Quality wooden sliding sash windows

Our timber sliding sash windows add real charm and character to any home, helping to replicate traditional designs with a high-quality finish that won’t compromise its thermal performance.

Various sliding sash options

We can offer two different types of sliding sash styles including spiral balance as well as cords and weights so you can find the perfect match for your Surrey project.

Recreate traditional sliding sash designs

Recreate classic designs with our full range of sash products including slim frames, timber only parting beads, baton rods, sash horns and more.

Energy efficient

Bereco timber sliding sash windows are available in double or triple glazing. Both are compliant with the updated Part L building regulations and achieve fantastic U-values.

High performing

Not only are our wooden sliding sash windows incredible insulators, they also have great noise reduction capabilities, helping to reduce sounds from outside your property.

Homeowner Solutions

Find the perfect high-quality timber windows and doors for your home renovation, extension or self-build project today.

Professional Solutions

Discover how our exceptional timber windows and doors can perfectly complement your trade project – whatever it may be.

Traditional timber sliding sash styles

Modern house with timber sliding sash windows

Sliding sash spiral balance

Spiral balance is our most popular style of sash window featuring maintenance-free, semi-concealed, in-frame spiral balances. The balances are available in white, brown, black or cream to match your chosen finish, and can be completely concealed to not detract away from the window’s traditional style.

Living with a flowery decor and white timber sliding sash windows

Sliding sash cords and weights

Our cords and weights windows are the essence of traditional design making them a perfect addition for heritage homes within Surrey. Featuring leads or steel weights, nylon sash cords with exceptional tensile strength and draught-proof axel pulley wheels, our cords and weights are available with an easy clean facility as well as internal access to the internal and external sash weight pockets, helping to simplify future maintenance.

  • Colour
  • Glazing
  • Ironmongery
  • Security
  • Technical
  • Colour

    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 your property in Surrey.

    Paint & Stain Finishes
    RAL 9016

    RAL 9016

    Linen

    Linen

    Parchment

    Parchment

    BS.10.B.15

    BS.10.B.15

    RAL 9001

    RAL 9001

    Parlour

    Parlour

    RAL 1015

    RAL 1015

    BS.10.C.31

    BS.10.C.31

    BS.10.B.17

    BS.10.B.17

    RAL 7032

    RAL 7032

    RAL 7030

    RAL 7030

    RAL 6019

    RAL 6019

    French Green

    French Green

    RAL 6021

    RAL 6021

    RAL 6005

    RAL 6005

    London Dust

    London Dust

    RAL 5014

    RAL 5014

    RAL 5013

    RAL 5013

    RAL 5022

    RAL 5022

    RAL 3002

    RAL 3002

    RAL 3011

    RAL 3011

    RAL 3005

    RAL 3005

    Smoke

    Smoke

    RAL 7035

    RAL 7035

    RAL 7040

    RAL 7040

    RAL 7037

    RAL 7037

    RAL 7015

    RAL 7015

    RAL 7016

    RAL 7016

    RAL 7024

    RAL 7024

    RAL 9005

    RAL 9005

    RAL Colour

    RAL Colour

    Glazing

    Obscure glazing

    Glazing is an important consideration for any project, with our timber sliding sash windows you can choose from single glazing, SlimLine (narrow cavity) glazing, double glazing, or triple glazing. Add glazing bars to create traditional and contemporary glazing patterns using our applied 16mm, 25mm and 35mm glazing bars.
    We offer acoustic double glazing with a range of impressive sound reduction ratings, from 33dB to 42dB and a variety of obscure glazing patterns are available offering varying privacy levels (rated 1-5 with 5 being the highest level of obscurity). Our obscure, translucent coloured and opaque painted glass also makes for a great feature.

    Delta (Level 5)

    Delta (Level 5)

    Kora (Level 4)

    Kora (Level 4)

    Chinchilla (Level 3)

    Chinchilla (Level 3)

    Kocie (Level 4)

    Kocie (Level 4)

    Cotswold (Level 5)

    Cotswold (Level 5)

    Niagara (Level 5)

    Niagara (Level 5)

    Frosted (Level 5)

    Frosted (Level 5)

    Stippolyte (Level 4)

    Stippolyte (Level 4)

    Ironmongery

    Handles and locks

    Our timber sash windows come fitted with fitch fasteners, hook lifts and opening restrictors. You can choose from two designs of fitch fasteners known as The Fitch Lock or the Brighton Fastener, three different designs of the opening restrictor and 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 as well as optional D handles and ring lifts. With single or dual colour options you can even perfectly match the outside and outside of your property. Click the link below to view our full range of window ironmongery.

    Window Ironmongery
    Polished Brass

    Polished Brass

    Antique Brass

    Antique Brass

    Polished Chrome

    Polished Chrome

    Satin Chrome

    Satin Chrome

    Polished Chrome

    Polished Chrome

    Security

    Safety (and security) first

    Feeling safe and secure in your home is essential for your peace of mind, that’s why our timber sliding sash windows are Secured by Design accredited, and 3rd Party tested and certified to Part Q.

    Secured by Design

    Secured by Design

    PAS 24

    PAS 24

    ERA Total Security Guarantee

    ERA Total Security Guarantee

    Technical

    Product Specification

    We’re pleased to share that our products successfully meet industry standards, are fully accredited and have even received certifications related to their security and performance. Check out the complete range of product specifications below.

    Certification

    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

    Performance

    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

    Maintaining Surrey’s rich landscape and heritage

    Property design, quality and character is highly valued in Surrey and our range of traditional timber sliding sash windows perfectly complement this rich English landscape, its built heritage and conservation areas.

    With a wide range of design and colour options available, you can create a unique set of sliding sash windows truly bespoke for your project or home.

    At Bereco, we understand that distinctive character needs to be maintained within UK homes and so we have manufactured durable wooden sliding sash windows that match the historical style while delivering outstanding thermal performance.

    Whether you’re a homeowner working on a renovation project, an architect or a trade professional we can help you with both your budget and the design of your new windows so get in touch today.

    Contact us
    White sliding sash window in home office
    Bespoke timber sliding sash window

    Totally bespoke timber sliding sash windows

    With a range of bespoke sizes and designs, our sash timber windows can span widths up to 1.2 meters and reach heights of up to 2.7 metres using any combination of fixed and opening sashes as well as contemporary, traditional or heritage mouldings.

    Plus, you can create more traditional styles for your Surrey home like horizontal, cottage, Georgian or marginal bar using our applied 16mm, 25mm and 35mm glazing bars.

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    Traditional house style meets contemporary living in England

    Our timber sash windows are fully compliant with the updated Part L Building Regulations. We offer double glazing with warm edge spacers as standard which achieve incredible U-values starting from 1.2 W/m²K. We can also supply triple glazing systems which successfully reach U-values as low as 0.8W/m²K for low-energy retrofits. This means your Surrey home can maintain its traditional character without compromising on thermal performance.

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    Flat with white sliding sash windows
    Redwood
    Hardwood

    Redwood or hardwood timber sash windows

    All of our products are manufactured using FSC® 100% engineered laminated timber. We offer redwood (Scots Pine) and hardwood (Dark Red Meranti) and both have the same extensive warranty. When comparing the two materials, our hardwood has more of an open grain structure meaning it gives more of a textured finish, particularly when stained.

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    Replicating original window features

    We can offer a variety of traditional window features to help you find the perfect match for your Surrey home. From slim frames, timber only parting beads, timber staff beads/baton rods to travel stops we can offer a variety of traditional window features to help you find the perfect match for your home. We even have the option of deeper bottom sash rails and seven styles of sash horn so you can replicate any original sash window design from the classic era.

    We also have glazing bars available in 16mm, 25mm and 35mm so you can create traditional styles such as horizontal, cottage, Georgian or marginal bar.

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    Close up of white sliding sash window
    Living area with green decor and white sliding sash windows

    Design a home to complement the classical era

    Surrey homes are filled with distinctive character which should be enhanced and so we have a complete range of design options including curved head frames, curved on plan frames, curved sashes and even curved glass. With dividing or applied bars available in varying widths means we can replicate any of the classical bar patterns.

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    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. The windows also feature glazing which achieves a dB rating of up to 47dB which is perfect for reducing noise from the outside.

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    Sliding sash windows behind purple sofa
    Sliding sash bay window

    Mock sash timber windows

    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 if you want the sash window look but is impractical because of narrow reveals. In this instance, a traditional sash window doesn’t offer the clear opening needed to comply with UK escape regulations.

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    Double glazed timber sash windows with a 1.2 U-value

    Our double glazed timber windows and doors exceed the new Part L 2023 building regulations and can achieve impressive U-values starting from 1.2 W/m²K – which is 15% better than the guidelines.
    Whereas our triple glazed windows and doors achieve U-values starting from 0.8W/m²K which is 43% better than what’s stipulated in the regulations.

    Find out more

    Choose timber 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 FAQ's

    How do sliding sash windows operate?

    Sashes slide vertically within the frame. At Bereco we offer cords and weights sliding sash windows, which is a traditional weight and pulley system. We also offer 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.

    Do you offer traditional sliding sash windows?

    We offer sash windows in traditional cords and weights or a modern spiral balance method of operation featuring traditional or heritage style mouldings and bars that are perfect for replacement windows or conservation areas.

    What is the difference between spiral balance and cords and weights?

    They are a completely different opening mechanisms. The cords and weights option has wider jambs to hold the lead or steel weight, but there is no difference in the warranty we offer.

    Do you offer a tilt facility on your sash windows?

    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 and weights option is available with an easy clean system that allows the bottom sash to open inwards side hung.

    Can I have hardwood cills on softwood frames?

    Even though we can offer this, both our hardwood and redwood timbers have the same warranty and are engineered from 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.

    Do I have to opt for sash horns?

    No you don’t, it’s completely up to you. But if you do want them we have seven different styles to choose from.

    Want to get hands on?

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

    We replaced the window that our designers and construction team had ordered from Potton as it was far too high and small. I ordered a much bigger window direct from Bereco. They were extremely helpful and kept in touch regularly, helping us by bringing the date forward as we needed the replacement window urgently to allow work to progress.
    The window fitted perfectly. It was of a very good quality and I am really pleased I decided to order a bigger one.

    Judith

    At all stages throughout the process of getting information, getting a quotation and dealing with queries, placing the order and organising delivery the staff were very polite, clear and professional.
    The product arrived safely and has been admired by local skilled timber craftsmen.

    Ian Bloese

    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.

    Phil

    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

    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
    Secured by Design certificate
    UKCA
    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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