Timber box sash windows made in Yorkshire

  • Traditional weights and pulley construction
  • Concealed trickle ventilation
  • Internally beaded
Smithy cottage hidden balance sliding sash windows

Traditional box sash windows

Our box sash windows blend traditional design with modern engineering to offer a window solution that combines beauty, durability, and exceptional performance. Crafted from high-quality, sustainably sourced timber, these authentic sash windows are designed to complement both period and contemporary properties. With a wide range of customisation options, from hardware finishes to bespoke shapes and designs, you can create a look that perfectly suits your home.

Our double glazed sash windows provide significant energy efficiency benefits, including improved sound insulation, reduced condensation, and UV protection.

Our box sash windows also provide superior security, energy efficiency, and weatherproofing, ensuring that they not only enhance the aesthetic of your home but also offer practical benefits. Backed by our comprehensive manufacturer guarantees and built with expert craftsmanship, our timber windows provide the perfect balance of form and function, making them a lasting investment for any property.

What is a Sash Window?

A sash window is a timeless window style that has graced homes since the 17th century. Characterized by one or more movable panels, or “sashes,” that slide vertically to open and close, these windows are a hallmark of period properties.

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.

Installation Process of Wooden Sash Windows:

The installation of wooden sash windows is meticulously planned to ensure a seamless experience for homeowners. Installers follow detailed steps to maintain the historical significance and craftsmanship, reflecting their popularity in Georgian and Victorian architecture.

Timber Windows

Timber windows are the epitome of classic elegance, offering a traditional look that is difficult to replicate with modern materials. At Patchett Joinery, our timber windows are crafted from high-quality, sustainably sourced timber, ensuring they meet the highest standards of quality and craftsmanship. We offer a variety of timber window styles, making it easy to find the perfect match for any period property. Whether you need single-glazed, double-glazed, or triple-glazed options, our timber windows provide excellent thermal performance and aesthetic appeal, making them a versatile choice for any home.

Key Features of our Timber Box Sash Windows

Our box sash windows combine engineered timber construction, sustainability, and superior craftsmanship. With many customisation options, enhanced security, and energy efficiency, they offer a perfect blend of traditional style and modern performance.

Box Sash Window Benefits & Features

Our box sash windows blend traditional craftsmanship with modern technology, offering benefits that enhance your home’s security, and energy efficiency. The quality and craftsmanship of original sash windows are evident in their bespoke features and adherence to conservation criteria. Each feature is designed to meet the highest standards, ensuring increased performance, and longevity.

Quality & Craftsmanship
Enjoy the timeless appeal of traditional sash windows with the assurance of modern, high-quality construction.
  • Engineered Timber Construction: Ensures lasting strength and a precise finish that maintains the classic appearance of traditional sash windows.
  • Comprehensive Manufacturer Guarantees: Offers peace of mind with guarantees that protect the quality and performance of your timber windows.
  • All Sashes Are Drained and Ventilated: Enhances the life expectancy of your windows by allowing proper drainage and ventilation.
  • Water Drain Detail: Adds a decorative yet functional element, guiding water off the cill to protect your windows from water retention and damage.
  • Water-Based Painting System: Provides weather resistance and UV protection, prolonging the life of the windows while ensuring a beautiful finish.
Sustainability
Contribute to a greener planet with eco-friendly timber windows made from renewable resources.
  • High-Quality, Sustainably Sourced Timber: Crafted from timber that is responsibly sourced, reducing the environmental impact of your windows.
  • Eco-Friendly Paint Process: Utilizes environmentally conscious, water-based paints that are free from harmful chemicals.
Customisation
Tailor your windows to perfectly match your home’s design and personal preferences.
  • Large Choice of Hardware in Contemporary or Traditional Design
    Choose from a range of finishes, including stainless steel, with hardware that suits both modern and period properties.
  • Traditionally Proportioned Timber Sections
    Replicate original window designs for an authentic look while offering the benefits of modern technology.
  • Custom Shapes and Designs Available
    Personalise the size, shape, and design of your windows to fit unique spaces or architectural styles.
  • Trickle Vents (Option)
    Discreetly concealed within the frame, these vents improve airflow without compromising the aesthetic of the window.
  • Available in Any RAL Paint Color
    Match or complement your home’s color scheme with a wide range of paint color options.
  • Astragal Bars (Option)
    Available in various sizes and styles, these bars offer a seamless, scribed finish that enhances the window’s traditional look.
  • Sash Horn Detail (Option)
    Traditional sash horns can be added to the top or bottom sash to enhance the heritage design of your windows.
Safety & Security
Secure your home with double glazed or triple-glazed box sash windows, designed for superior protection.
  • PAS 24 Hardware: Meets industry standards for safety, ensuring your home remains secure.
  • Restrictors to Limit Window Opening (Option): Provides added safety by restricting how far the window can open, ideal for upper floors and homes with children.
Energy Efficiency of Double Glazed Sash Windows
Enhance your home's insulation and lower energy costs with energy-efficient sliding sash windows that combine modern functionality with classic design.
  • ‘U’ Values Lower Than Building Regulation Requirements (Option): Achieve greater energy efficiency and thermal performance, depending on the specifications you choose.
  • Internal Beading: Fitted at the factory, this feature enhances weather protection and security while prolonging the life of your windows.
  • Double Draught Seals: These double weather seals ensure exceptional weatherproofing, better thermal insulation, and soundproofing.
  • Lockable Fitch Catches (Option): Secure the window while compressing the weather seals for optimal thermal and acoustic performance.

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.
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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.
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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.
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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'.
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Decorative Glass
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Leaded Glass
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Gas
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Spacer Bars
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Planitherm Total+ and Low Emissivity (Low E) Glass
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Standard Glass
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Toughened and Laminated Glass
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Low Iron Glass
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Anti – Sun Glass
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Acoustic Glass
Acoustic Glass option
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Obscure Glass
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Round End Sash Stop
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Cill Lock
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Solid Ring Pull Sash Lift
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Ring Sash Lift
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Mighton Fitch Fastener Locking
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Croft Lockable Fitch Fastener
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Solid Sash Lift
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Cast Sash Lift
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Pressed Sash Lift
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Push Lock
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Angel Lock
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Sliding Sash Fitch Fastner
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Sash Pullies
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Vent Lock
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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 your sash windows

At Patchett Joinery, we are passionate about crafting high-quality sash windows and doors that are custom-designed to meet your specific needs. Using only the finest sustainable timber, our sash windows reflect our unwavering commitment to quality and craftsmanship.

Your vision is at the heart of our process. Whether you’re seeking sash windows that complement modern elegance or capture the charm of a historical property, we are here to bring your ideas to life. Explore our extensive range of sash window styles, or collaborate with us on bespoke designs tailored for unique or heritage-rich homes

Expert Sash Window Manufacturers
With over 180 years of experience, we have honed our expertise in creating superior timber sash wind...
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Custom Solutions for Unique Homes
No two homes are alike, which is why we offer bespoke sash windows that perfectly suit your property...
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Seamless Installation
We don’t just craft exquisite sash windows; we manage the entire installation process to ensure a se...
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Commitment to Sustainability
We are proud to use only sustainably sourced timber in our sash windows, supporting eco-friendly pra...
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Exceptional Customer Service
From your first consultation to aftercare, our dedicated team is committed to providing exceptional...
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Committed to sustainability

At Patchett Joinery, sustainability is a priority throughout the production of our box sash windows. By using responsibly sourced materials and eco-conscious manufacturing processes, we ensure that our timber sash windows are as environmentally friendly as they are elegant.
Sustainably Sourced Timber
We craft our box sash windows from FSC®-certified, sustainably sourced engineered timber, providing...
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Recycled Timber Waste
All timber waste generated during the production process is repurposed into briquettes that power ou...
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Sustainable Energy Usage
Our workshop is powered by renewable energy, including solar panels and a biomass boiler, helping us...
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Eco-Friendly Paint Process
We use water-based paints from Symphony Coatings, an environmentally responsible choice that signifi...
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Locally Manufactured in Yorkshire
All of our box sash windows are produced locally in our West Yorkshire workshop, reducing transporta...
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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 

Case studies

What our customers have to say

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