99.5% Recommend Us
Free Consultations
Bespoke Designs
Extensive Warranties
Sustainably Sourced
High Security Designs
  • Benefits
  • Styles
  • Colours
  • Glazing
  • Security
  • Performance

Get Modern Performance with Traditional Timber Sliding Sash Windows

Authentic 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 with excellent thermal performance.

High Acoustic Performance

Reduce outside noise and improve comfort with advanced acoustic insulation.

Choose from a Range of Beautiful Sliding Sash Window Styles

Traditional Georgian Styling

Elegant Georgian bar layouts designed to complement heritage homes.

Contemporary Flush Designs

Modern sash window aesthetics with slim sightlines and clean finishes.

Timber Craftsmanship

Premium engineered timber for durability and timeless character.

A close-up of the interior of a white timber sash window, showing the two sashes joined together. The top sash is secured by a metal locking mechanism, and the window's hardware, including the sash lifts, is visible. The window is set against a blurry background of a green garden.

Choose from a Range of Beautiful Sliding Sash Window Styles

Custom Colour Options

Select from modern, heritage and bespoke RAL colour finishes.

Natural Timber Finishes

Enhance the natural beauty of timber with premium stain options.

Fade Resistant Coatings

Long-lasting paint finishes designed to withstand harsh weather conditions.

Advanced Glazing for Better Comfort & Efficiency

Double & Triple Glazing

Improve thermal efficiency and indoor comfort with advanced glazing systems.

Improved Insulation

Keep your home warmer in winter and cooler during summer months.

casement windows lit up at night

Secure Sliding Sash Windows Designed for Peace of Mind

Advanced Locking Systems

Multi-point locking systems provide enhanced protection for your home.

Strong Timber Construction

Engineered timber frames built for strength, durability and security.

Tested for Performance

Designed and tested to meet modern security standards and regulations.

A close-up of the interior of a white timber sash window, showing the two sashes joined together. The top sash is secured by a metal locking mechanism, and the window's hardware, including the sash lifts, is visible. The window is set against a blurry background of a green garden.

Exceptional Performance Built for Modern Living

Excellent Thermal Ratings

Achieve superior energy efficiency and lower heating bills.

Weather Resistant

Designed to withstand wind, rain and changing weather conditions.

Low Maintenance

Durable finishes and quality materials reduce ongoing maintenance requirements.

A window featuring a bird perched gracefully on the sill.

Speak To Our Friendly Team

Whether you're renovating a period property or simply replacing tired old windows, our experienced team will be with you every step of the way. From design advice to your survey and installation, we make the whole process easy. Contact us today to book a consultation or get your free quote.

Big bedroom with white sliding sash windows

What our customers say

Jack

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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.

ASBP logo
BlueSky Certification logo
Secured by Design certificate
UKCA
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

Sliding Sash Window FAQ's

What is a sliding sash window?

A sliding sash window is a traditional style of window made up of one or more panels, known as sashes, that slide vertically to open and close. They’ve been a defining feature of British architecture for centuries and are particularly well suited to Victorian, Edwardian and Georgian properties. At Bereco, our timber sliding sash windows recreate these classic designs while delivering the energy efficiency, security and performance that modern homes demand.

What types of sliding sash windows does Bereco offer?

We offer two different sliding sash styles to suit your project. Our Spiral Balance option is our most popular, featuring maintenance-free, semi-concealed, in-frame spiral balances available in white, brown, black or cream. Our Cords and Weights option captures the true essence of traditional design, with lead or steel weights, nylon sash cords and draught-proof axel pulley wheels, plus internal access to the sash weight pockets to simplify future maintenance.

Are timber sliding sash windows energy efficient?

Absolutely. Our double glazed timber windows and doors exceed the new Part L 2023 building regulations and can achieve impressive U-values starting from 1.3 W/m²K, which is 7% better than the guidelines. Our triple glazed windows and doors achieve U-values starting from 0.8 W/m²K, which is 43% better than what’s stipulated in the regulations. This means a warmer, more comfortable home and the potential for lower energy bills.

How long do Bereco sliding sash windows last?

The care and attention we give to our timber before and during the manufacturing process ensures an up to 60+ year lifespan, a 10-year warranty and low maintenance for life. Our windows are built to stand the test of time, giving you lasting beauty and performance for decades to come.

Are your timber windows sustainably sourced?

Yes. Our timber windows are naturally renewable and made from only sustainably sourced FSC® 100% or 100% PEFC Certified softwood or hardwood. We’re committed to supplying beautifully bespoke timber windows and doors that don’t cost the earth, with timber being the lowest embodied carbon window material available.

Do you offer installation?

Yes. We offer a complete survey, supply, removal, installation and finishing service, giving you the confidence that your new windows will be fitted to the highest standard. If you’d prefer a supply-only service, perhaps because you have your own FENSA or CERTAS certified fitters, that’s no problem at all. Our team will help you find the option that best suits your project.

Book a Design Consultation Today!

Find the perfect style for your home and budget by taking out the guesswork. All you need is a computer, tablet or smartphone, some photos of the outside of your ome and rough measurements of your windows (don't worry, they don't need to be perfect!) - our team will do the rest.

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Two Classic Sliding Styles to Choose From

Every home is different, which is why we offer two distinct sliding sash styles. Our Spiral Balance option is the most popular, featuring maintenance-free, semi-concealed in-frame balances available in white, brown, black or cream.

For true period authenticity, our Cords and Weights option captures traditional design at its finest, with lead or steel weights, high-tensile nylon sash cords and draught-proof axel pulley wheels. Whichever you choose, you’ll enjoy smooth operation and timeless style for years to come.

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Built to Last, Naturally

Our sliding sash windows are made from only sustainably sourced FSC® 100% or 100% PEFC Certified softwood or hardwood, so you can choose timber with confidence.

The care and attention we give to every window before and during manufacturing ensures an up to 60+ year lifespan, a 10-year warranty and low maintenance for life. Beautiful, responsible and built to stand the test of time.

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