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6-8 weeks current supply only lead time
10 year warranty, 60 year life expectancy
10-12 weeks current supply and installation lead time
Designed by you, made to measure by us
99.5% of our customers would recommend us
Double glazed whole window U-values as low as 1.3W/m²K
Choosing the right timber sash windows for your Essex property requires a supplier who understands both historic joinery methods and contemporary performance standards. Since 2003, Bereco has been manufacturing bespoke wooden sash windows for homeowners in Chelmsford, Brentwood, Saffron Walden and across the county, offering a design, supply and installation service.
Our sash windows are made from FSC® 100% or 100% PEFC certified sustainably sourced timber, delivering traditional period character alongside impressive thermal efficiency and security features. Whether your project involves a conservation area property requiring planning compliance or you’re looking to embrace your home’s character, our knowledgeable team will support you throughout your sash windows Essex project.
Book a consultationOur timber sash windows deliver authentic character and visual appeal to homes throughout Essex, combining historical accuracy with outstanding thermal efficiency.
Every window is made to measure, accommodating widths up to 1.3 metres and heights up to 2.7 metres to suit your exact requirements.
Our double glazed windows achieve U-values from 1.3 W/m²K, whilst triple glazed options start from 0.8W/m²K.
Choose between modern spiral balance systems or traditional cord and weight mechanisms to match your property's character.
Available in 16mm, 25mm and 35mm profiles to create Georgian, cottage, horizontal or marginal bar patterns.
Find the perfect high-quality timber windows and doors for your home renovation, extension or self-build project today.
Discover how our exceptional timber windows and doors can perfectly complement your trade project – whatever it may be.
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.
Our cords and 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. Available with an easy clean facility as well as internal access to the internal and external sash weight pockets.
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 in Essex.
Paint & Stain FinishesRAL 9016
Linen
Parchment
BS.10.B.15
RAL 9001
Parlour
RAL 1015
BS.10.C.31
BS.10.B.17
RAL 7032
RAL 7030
RAL 6019
French Green
RAL 6021
RAL 6005
London Dust
RAL 5014
RAL 5013
RAL 5022
RAL 3002
RAL 3011
RAL 3005
Smoke
RAL 7035
RAL 7040
RAL 7037
RAL 7015
RAL 7016
RAL 7024
RAL 9005
RAL Colour
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) for your Essex home.
Delta (Level 5)
Kora (Level 4)
Chinchilla (Level 3)
Kocie (Level 4)
Cotswold (Level 5)
Stippolyte (Level 4)
Frosted (Level 5)
Hardware
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 Fasterner, 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.
Security
Dedicated to delivering security you can rely on, we guarantee our secure sash windows are fitted with the best window hardware which is Secured by Design and Part Q certified, helping to deter unwanted intruders.
With a range of fitch fasterners, hook lifts and opening restrictors available, you can choose the most suitable product for your needs to guarantee complete peace of mind.
Technical
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
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
Essex is home to countless historic buildings, from Tudor timber-framed houses to Victorian terraces, and we understand the importance of preserving their character.
Our range of sash windows features authentic detailing including slimline frames, heritage and traditional mouldings, and period-appropriate glazing bars that meet conservation requirements. We work regularly with listed buildings and properties in conservation areas, liaising with planning authorities to ensure full compliance whilst delivering windows that look authentic and perform exceptionally.
Get in touchOur sliding sash windows are crafted from premium sustainably sourced timber that’s FSC® 100% or 100% PEFC certified, ensuring every window meets the highest environmental standards.
We offer redwood (Scots Pine) and hardwood (Dark Red Meranti) and both have the same extensive warranty. The care and attention we dedicate to timber selection and preparation helps ensure an up to 60+ year lifespan, giving you windows that will grace your Essex home for generations to come.
Get in touch
Our timber sash windows aren’t just beautiful – they’re highly efficient too. With double glazing achieving U-values from 1.3 W/m²K and triple glazing from 0.8W/m²K, they far exceed current building regulations.
This superior thermal performance means less heat escapes from your Essex home, reducing your energy consumption and lowering your heating bills. The combination of quality timber frames and advanced glazing technology provides excellent insulation whilst maintaining the elegant appearance of traditional sash windows.
Book a consultationIf your Essex property is affected by traffic noise, flight paths or other external sounds, our Ambient acoustic sash windows offer an effective solution.
Certified as noise-reducing timber sash windows, our designs deliver overall noise reduction up to 42dB, with specialist glazing achieving up to 47dB. This makes a significant difference to your comfort, creating a peaceful sanctuary inside your home. Perfect for properties near the A12, M25, railway lines or Stansted Airport flight paths.
Book a consultationChoosing timber sash windows is an environmentally responsible decision. Our windows are manufactured from FSC® 100% or 100% PEFC certified sustainably sourced timber, ensuring responsible forest management.
Unlike uPVC or aluminium, timber is naturally renewable. With an up to 60+ year lifespan, our windows don’t need frequent replacement, further reducing environmental impact. At the end of their long life, they can be recycled or disposed of sustainably.
Contact UsSashes 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.
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.
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.
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.
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.
No you don’t, it’s completely up to you. But if you do want them we have seven different styles to choose from.
Our timber sash windows are built to last, with an up to 60+ year lifespan when properly maintained. This exceptional durability comes from using premium FSC® 100% or 100% PEFC certified sustainable timber, combined with craftsmanship by our skilled team. The quality of the finished job is paramount to us – we use multiple coats of high-quality paint or stain finishes and precision-engineered components to ensure longevity. Unlike uPVC windows which can become brittle over time, timber is a naturally durable material that can be maintained and refinished, making it a sustainable long-term investment that can add to your property value.
Absolutely – we have extensive experience replicating Victorian sash windows with great attention to authentic details. Our heritage range includes deeper bottom rails, decorative sash horns in seven styles, slim frames, and Georgian bars to match original designs. We recreate the exact specifications of Victorian-era windows whilst incorporating modern performance features.
Absolutely – our range of styles includes contemporary designs that suit modern homes perfectly. The clean lines and excellent ventilation work beautifully in contemporary homes, whilst the natural light and slimline profiles suit modern architecture. We can create sash windows with contemporary proportions, minimal glazing bars, and modern finishes. The combination of traditional aesthetics with modern technology and modern performance makes them the perfect choice for homeowners wanting character without compromising efficiency.
Order corner samples of popular products including stain, ironmongery and bars delivered straight to your front door.
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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.
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.
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