Premium timber sash windows - beautifully crafted since 1840

  • Traditionally proportioned timber sections
  • Designed to replicate original details
  • Elegant appearance
Smithy cottage hidden balance sliding sash windows (1)

Our timber sash window range

Box Sash Windows

Our traditional timber box sash windows use an authentic weight and pulley system for smooth, timeless operation. Built using high-quality materials, they provide excellent thermal insulation, draught-proofing, and long-lasting performance, all backed by comprehensive guarantees.

Spiral Sash Windows

Our concealed balance sash windows use a modern spiral spring system instead of traditional weights and pulleys. Offering the same classic sash appearance and smooth operation, they are a more cost-effective option, making them ideal for new builds or tighter budgets.

Yorkshire Sash Windows

Our timber Yorkshire sash windows feature a traditional horizontal sliding design, with one sash gliding behind the other. Commonly found in Northern cottages, they combine heritage character with smooth operation thanks to aluminium tracks and high-quality adjustable rollers.

Heritage timber sash windows with modern performance

Our traditional timber box sash windows feature an authentic weight and pulley system, delivering the timeless operation and detailing associated with classic sash windows. Expertly crafted using the highest quality materials, they provide excellent durability, smooth performance, and low maintenance, while benefiting from modern energy efficiency and draught-proofing.

For those seeking a more cost-effective solution, our concealed balance sash windows use a modern spiral spring system in place of traditional weights and pulleys. Offering the same elegant sash appearance and high-quality craftsmanship, they are particularly well suited to new builds or projects where budget is a key consideration, without compromising on performance or ease of use.

We also manufacture Yorkshire sash windows, a distinctive horizontal sliding style traditionally found in cottages and period homes across the North of England. Characterised by their square proportions and side-to-side operation, these windows combine heritage charm with smooth, reliable functionality thanks to high-quality rollers and aluminium tracks. As a Yorkshire-based company with our factory in Bradford, manufacturing Yorkshire sash windows remains part of our heritage.

Every sash window we manufacture is bespoke, carefully designed to complement your property and built to provide lasting beauty, performance, and craftsmanship for generations to come.

Key Features of Our Timber Sash Windows

Our timber sash windows are designed to meet the highest standards of performance, durability, and style. Each window is carefully crafted using top-quality materials and precision engineering to ensure long-lasting satisfaction. Key features include:

More Benefits & Timber Sash Window Features

Our windows combine timeless design, superior craftsmanship, and advanced technology to offer exceptional performance and aesthetic appeal. Crafted from sustainably sourced timber, these windows are made to measure to fit any style or requirement, ensuring a perfect match for your home. With enhanced security features, energy-efficient technology, and options for traditional or contemporary finishes, our windows are designed for durability, sustainability, and beauty. Experience the perfect blend of tradition and modern performance with our bespoke sash window services.

Quality & Craftsmanship
Our windows are designed with precision and built to last, ensuring superior performance and aesthetic appeal.
  • Engineered timber construction
    Our windows use engineered timber for exceptional strength and durability, providing long-lasting beauty and functionality.
  • Comprehensive manufacturer guarantees
    We offer extensive guarantees on all windows, giving you confidence in the craftsmanship and longevity of our products.
  • All sashes are drained and ventilated for greater life expectancy
    Proper drainage and ventilation are integral to our windows, reducing moisture buildup and extending window life.
  • Water drain detail
    Decorative water drain details enhance the performance of the windows by efficiently directing water away from the cill, preventing damage.
  • Water-based painting system for weather resistance and UV protection
    Our windows feature a water-based paint system that offers robust protection against weather and UV rays, ensuring a long-lasting finish.
Sustainability
We prioritise environmentally responsible solutions, using materials and processes that reduce our environmental impact without compromising quality.
  • High-quality, sustainably sourced timber
    Our windows are crafted from sustainably sourced timber, combining eco-friendliness with premium durability.
  • Eco-friendly paint process
    We use an eco-friendly paint process that lowers emissions while delivering a resilient, high-quality finish on all windows.
Customisation
Every home is unique, which is why we offer a variety of options to customise your traditional sash windows to match your style and requirements.
  • Large choice of hardware in contemporary or traditional design
    Choose from a wide selection of hardware styles and finishes, including sash lifts, locks and more, ensuring your windows perfectly complement your home’s design.
  • Traditionally proportioned timber sections to replicate original window details
    Our windows are designed with traditional proportions to replicate authentic window details, preserving the character of older homes.
  • Custom shapes and designs available
    We provide custom windows in various shapes and designs, allowing for a tailored fit or unique aesthetic.
  • Concealed balance system or traditional weight and pulley box sash window (option)
    Choose between a modern concealed balance system or a traditional weight and pulley system for your windows, based on your preferences.
  • Trickle vents (option)
    Our windows can include concealed trickle vents with colour-matched external canopies, providing discreet ventilation without detracting from the appearance.
  • Available in any RAL paint colour
    We offer windows in any RAL paint colour, allowing you to match the windows perfectly to your home’s exterior or interior.
  • Astragal bars (option)
    Choose from a range of astragal bar styles for your windows, each providing a seamless finish and enhancing the traditional look.
  • Sash horns (option)
    Customise your windows with decorative sash horns, adding to the classic appearance of the top or bottom sash.
Safety & Security
Your safety is our priority. Our double-glazed sash windows are designed to meet industry-leading security standards to protect your home.
  • PAS 24 hardware
    Our windows are equipped with PAS 24-certified hardware, meeting the highest industry standards for security and peace of mind.
  • Restrictors to limit window opening (options)
    Optional window restrictors allow you to limit the opening range of your windows, adding an extra layer of safety for families and children.
Energy Efficiency
Our sash windows are designed to improve energy efficiency, helping you maintain a comfortable home while reducing energy costs.
  1. ‘U’ values lower than building regulation requirements depending on specification (option)
    Our high-performance windows deliver U-values below building regulation standards, offering superior insulation and energy savings.
  2. Internal beading
    Internal beading is a standard feature in our windows, enhancing weatherproofing and security for added durability.
  3. Double draught seals
    Double draught seals on all windows ensure excellent thermal performance, weatherproofing, and noise reduction, making your home more comfortable.

1000’s of configuration options

Accoya
This timber is the world’s leading high technology long life wood created from sustainably sourced, fast growing softwood in New Zealand. The timber has an average density of 510kg/m3.
Red Grandis
Our most commonly used hardwood timber, Red Grandis (Eucalyptus Grandis, to give it its botanical name) is a South American hardwood sourced from sustainable and carefully managed timber plantations.
Double-glazed casement window with black iron hardware
Double Glazing
Double glazing uses two panes of glass filled with insulating gas to make a window more energy-efficient. Double glazing can also reduce noise, condensation and increase security.
Heritage glazed sliding sash window in an old English terraced house
Heritage Glazing
Heritage glazing helps replicate the original look of historic houses without the need for bulky secondary glass and comes 'non-stamped'.
Decorative Glass
Leaded Glass
Gas
Spacer Bars
Thermal and Low Emissivity (Low E) Glass
Standard Glass
Toughened and Laminated Glass
Low Iron Glass
Anti – Sun Glass
Pilkington soundproof glass
Acoustic Glass
Acoustic Glass option
Obscure Glass
Round End Sash Stop
Cill Lock
Solid Ring Pull Sash Lift
Ring Sash Lift
Mighton Fitch Fastener Locking
Croft Lockable Fitch Fastener
Solid Sash Lift
Cast Sash Lift
Pressed Sash Lift
Push Lock
Angel Lock
Sliding Sash Fitch Fastner
Sash Pullies
Vent Lock
From the Anvil Polished Brass Fitch Fastener
From the Anvil Fitch Fastener
From the Anvil Flush key sash stop featured
From the Anvil Key flush sash stop
From the Anvil Satin Chrome Sash Eye Lift
From the Anvil Sash Eye Lift
From the Anvil Polished Bronze sash lift
From the Anvil Sash Lift
From the Anvil Polished Chrome Square Ended Sash Pulley
From the Anvil Square Ended Sash Pulley

Using only a water-based painting system which allows timber to “breathe” and adapt to climatic changes, our finishes provide maximum protection against weathering, fungal attack and UV degradation. The water-based application significantly reduces harmful emissions and disposal issues associated with solvent based systems.

Working with our paint partner, Sikkens, we can finish in any RAL colour, stain, or match against all well known paint ranges and brands. With the ability to have different internal and external finishes, your windows and doors can be finished just as you require.

Our factory is audited quarterly to ensure that the finished product has the highest quality paint finish and performance you would expect.

Why Choose Patchett Joinery for Timber Sash Windows

When it comes to crafting exceptional wooden sash windows that seamlessly blend heritage and innovation, Patchett Joinery stands apart as the premier choice. With a legacy spanning over 180 years, we have honed our skills and expertise to deliver products that truly embody the essence of quality, beauty, and sustainability.

Unrivalled Craftsmanship

At Patchett Joinery, our experienced joiners meticulously handcraft each window, ensuring flawless fit, authentic period detailing, and unmatched quality.

Sustainable Practices

We use sustainably sourced timber and eco-friendly processes, including water-based paints, to reduce emissions and provide superior protection against weather and UV damage.

Tailored Solutions

Every project is unique. We offer bespoke designs and a wide range glass, timber, and finish options to match your home’s style and functional needs.

Exceptional Customer Service

Our expert team ensures a smooth, hassle-free experience from consultation to installation, offering guidance and support throughout.

Quality Assurance

We guarantee excellence in every step, from timber selection to finishing, backed by comprehensive guarantees for lasting peace of mind.

Committed to Sustainability

At Patchett Joinery, we’re dedicated to sustainability in every aspect of our sash window production. From using responsibly sourced materials to eco-conscious manufacturing processes, our timber sash windows are designed to be as environmentally friendly as they are beautiful.
Sustainably Sourced Timber
Our windows are crafted from FSC®-certified, sustainably sourced engineered timber, offering a durable, eco-friendly alternative to UPVC.
Recycled Timber Waste
Any timber waste generated during the production of our windows is repurposed into briquettes, which fuel our biomass boiler—ensuring nothing goes to waste.
Sustainable Energy Usage
Our sash window workshop is powered by renewable energy, including a biomass boiler and solar panels, minimising our environmental impact.
Eco-Friendly Paint Process
We use water-based paints from Symphony Coatings on all windows, an eco-conscious choice that reduces harmful emissions compared to traditional oil-based products.
Locally Manufactured in Yorkshire
All of our windows are crafted in our West Yorkshire workshop, reducing the carbon footprint associated with imported products.

Where heritage meets innovation

The history of Patchett Joinery spans nearly 200 years, starting with the establishment of a general joinery firm in Queensbury, Bradford in 1840. Today we craft timber windows and doors on the same site, using proven manufacturing techniques and the finest materials.

Skilled craftsmanship

We are proud to manufacture on site at our Yorkshire workshop using local talent and skills.

1000s of options

We have a large range of styles, paint, stain, glazing, hardware and timber options to create the best possible solution for you.

Streamlined process

Whether supply-only or supply and install, our dedicated team is here to ensure every part of the process runs smoothly.

Expert installation

Our skilled installation team have a wealth of experience and are on hand to install your newly finished products with care.

Request your quote today

Get in touch with our team to get a free no obligation quote.

Our extensive guarantees

At Patchett Joinery, we stand by the exceptional quality of our timber sash windows with comprehensive guarantees

Against preservative failure

50 Year manufacturer guarantee on durability (rot resistance) with Accoya timber (30 years with engineered timber)*
*subject to exposure conditions

Paint

12 years opaque and 10 years translucent with Accoya. Up to 8 years on opaque and 6 years on translucent with engineered timber.*
*subject to exposure condiions

Weather Seals

10-year* manufacturer-backed
guarantee on weather seals.
*subject to exposure conditions

Double-Glazing

10-year* manufacturer-backed guarantee on double-glazed units.
*subject to exposure conditions

Hardware

5-year* manufacturer-backed
guarantee on hardware.
*subject to exposure conditions 

Our Sash Windows case studies

What our customers have to say

FAQ’s

What is a sash window?
A sash window is a style of window comprised of two operable sashes that slide vertically in opposing directions. One sash slides upwards while the other slides downwards, allowing for ventilation and airflow. Sash windows are counterbalanced with weights or spiral balances to enable smooth operation. Georgian sash windows, originating in the late 17th century, gained peak popularity during the Georgian and Victorian eras. These windows are known for their aesthetic characteristics and pane configurations, playing a significant role in historical architecture and restoration efforts. The unique design of sash windows includes weights and pulleys that counterbalance the sashes, allowing for smooth operation. This traditional mechanism not only adds to the charm but also ensures the window remains functional over time. Sash windows are highly sought after by homeowners who wish to preserve the historical authenticity of their properties while enjoying the benefits of modern engineering. Historical Significance and Aesthetic Appeal: Traditional timber sash windows have evolved from the late 17th century and continue to be popular due to their aesthetic appeal and practicality. There is a resurgence of interest in preserving these traditional wooden designs amidst modern alternatives.
What are the benefits of wooden sash windows?
Wooden windows offer several benefits including classic aesthetic appeal, easy operation, excellent ventilation control, enhanced security features, and good for energy efficiency. They are low-maintenance and can increase a property's value and curb appeal.
How energy efficient are timber sash windows?
With modern upgrades like double or triple glazing, wooden sash windows can achieve excellent thermal performance and energy efficiency. Our traditional sash windows are made with low U-values for reduced heat transfer.
Are wooden sash windows secure?
Yes, modern sash windows incorporate multi-point locking systems, reinforced materials, and robust hardware to provide a high level of security against forced entry.
How is a sash window operated?
A sash window traditionally uses counterweight systems with lead weights and pulleys. Modern versions utilise spiral balances or spring balances instead. The top and bottom sashes slide vertically - opening the bottom sash pulls cool air in, while opening the top sash allows warm air to escape.
What are the different timber options for wooden sash windows?
Popular timber choices include hardwoods like accoya, red grandis and engineered redwood. Each offers its own aesthetic, durability, and performance characteristics.
Are sash windows suitable for period properties?
Yes, they are an ideal choice for preserving the authentic character of period and heritage listed properties everywhere. Their traditional appearance and operation blends seamlessly with classical architecture.
What finishes and colour options are available?
A wide range of paint colours and stain finishes can be specified for a sash window, from classic white to rich wood tones. Dual colour options with different interior/exterior finishes are also available.
How much maintenance do new sash windows really require?
Sash windows require relatively low maintenance. The tracks/balances should be checked periodically, external surfaces repainted/stained as needed, and the glass/frames cleaned regularly.
Do sash windows provide good sound insulation?
With double glazing or triple glazing, they can offer very good sound insulation by reducing exterior noise transmission into the home.
Are sliding sash windows expensive?
While sliding sash windows require more skilled manufacturing compared to some other window styles, they are a solid long-term investment that can add value. Pricing depends on factors like materials, glazing, size and finish specifications.

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