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Our story

London’s expert in bespoke timber windows and doors.

About us

Welcome to Sashed, the home of exceptional, design led joinery for bespoke timber windows and doors. Based in London, we craft refined, beautiful solutions for homes across the capital and the Home Counties. Combining luxury, heritage, and sustainability, we create stunning designs that perfectly balance timeless elegance with innovation, meeting the needs of both modern living and conservation projects.

Our story

We believe in the power of craftsmanship and the art of getting every detail just right. Our journey began with an ambitious vision: to create design led timber windows and doors that enhance the beauty of every property, while adhering to the highest standards of sustainability, design excellence, and conservation principles.

Whether restoring a classic period property, undertaking a heritage project, or designing for a modern masterpiece, our bespoke solutions are tailored to your unique needs.

Why choose us? 12 good reasons

yellow timber window

1. Design led joinery

At Sashed, every product is a testament to our ethos of design led craftsmanship, which means we place design at the heart of everything we do. But design isn’t just how our windows and doors look – it’s about how they’re made, work, and the process that brings them to life. It’s also about innovation and problem-solving.

Our design led approach is guided by a simple yet powerful question: “How can we make this product the best it can be?” This mindset drives us to challenge assumptions – our own, our clients’, and even industry norms – to deliver timber windows and doors that are both beautiful and functional.

Design isn’t just an attribute at Sashed; it’s an ethos. It’s the driving force behind our bespoke joinery and why our products stand apart in quality and design.

2. Innovation

We embrace a philosophy of innovation and ethics, ensuring our joinery solutions are beautiful, technologically advanced, and ethically crafted, pushing boundaries to create products that exceed expectations in both form and function.

Our commitment to innovation extends to the materials and techniques we use. For example:

  • CNC Technology ensures precision, delivering consistently superior results.
  • Our entire windows and frames are crafted from 100% of the chosen timber, whether it’s Accoya, Oak, or another premium wood. We do not cut corners using inferior wood for certain parts, such as the windowsill.
  • High-performance sash boxes are 145mm (compared to the industry standard of 165mm), offering a sleeker, more aesthetically pleasing finish.
  • We exclusively use knot-free timber, ensuring a flawless appearance and longevity.
a timber pivot door made by Sashed. in a kitchen opening out
Sashed_Surbiton_001

3. Customisation and attention to detail at every stage

Detail is paramount at Sashed and every Sashed product is a tailored masterpiece, crafted to complement your property’s character and your personal style. From the initial consultation to installation, we apply rigorous standards to every process element, ensuring everything is right the first time. We guide you through a bespoke design journey, offering:

  • Timber options: From Accoya™ and Oak to Meranti, Larch and Pine.
  • Glazing choices: Conservation-grade, slimline, acoustic, vacuum glazing, or specialist options.
  • Luxury ironmongery: Partnering with prestigious brands like Croft Architectural Hardware and Joseph Giles.
  • Colour consultancy service: Expert advice to help you select the perfect paint or stain finish.

From traditional horns to elegant beading, every detail is meticulously considered to achieve remarkable results.

4. Sustainability at the core

We’re proud of our eco-conscious approach to both materials and production. All Sashed timber is sourced sustainably, and we make sure to minimise waste by recycling as much as possible. We’re committed to reducing our environmental impact, with zero waste sent to landfill. We also love working with eco-conscious customers and aim to exceed your expectations.

fireproof windows made from timber
Sashed team inside a storeroom

5. A passion for customer satisfaction

Our commitment to client satisfaction matches our passion for design. The Sashed team is trained to prioritise the client’s happiness above all, even if it means putting profit second. We understand that purchasing windows and doors is a significant investment, and we strive to make the process easy and stress-free. From our first interaction with you, we’ll be transparent, approachable, and, most importantly, never pushy – just experts who are committed to helping you find the perfect solution for your project.

6. Planning permission services for windows and doors

We are proud to be the only design led joinery company offering a fully managed in-house planning permission service when helping you change your windows and doors. Our aim? To make changing your windows and doors as easy as possible. Acting as your dedicated agent, we handle every aspect of your planning application – from creating, submitting, and managing the application to changing your windows once planning has been accepted.

Timber sash windows in Mayfair made by Sashed
Sashed customer being shown some blue stained glass

7. No pressure sales

We don’t believe in pressure-selling. Our team is here to assist, advise, and provide you with the information you need to make an informed decision. We want you to come to us when you’re ready, and you can always trust that we’ll put your needs first.

8. Certified and trusted

As a FENSA registered company, we ensure all our work is compliant with building regulations, offering you peace of mind. We are also proud to be a Which? Trusted Trader and TrustMark government endorsed, ensuring our customers receive the highest level of service and quality.

A pub in south London with flowers and timber windows
Sashed Installer

9. Expert installation

Our in-house, FENSA-approved installers are some of the UK’s most highly skilled timber window and door specialists. You can expect all work to be carried out to the highest standards by experienced professionals demonstrating the utmost consideration and respect for your property. Internal protection and waste disposal services are also provided throughout the installation phase.

All Sashed install staff are employed directly. No subcontractors are used, which means we are in complete control of quality. This is often noted in our reviews, where the quality of installation is rated as the most important factor by respondents.

10. Aftercare you can rely on

From correcting snagging issues to advising on ongoing maintenance, our aftercare means we’ll be on hand to support you for the life of your windows and doors. We will deliver the appropriate paperwork to verify the quality of your installation, including FENSA certification, UKCA marking, and proof of legality and compliance with current building regulations as per your local council’s requirements. We also offer maintenance advice and our comprehensive guarantee in line with our aftercare promise.
A timber window in a Barnes conservation area

11. Our principles

Our founding principles – Quality, Ethics, Efficiency – guide everything we do. Our mission is simple: to deliver excellence in every project, even putting customer satisfaction ahead of profit

Quality

We’ve invested significant time and effort into ensuring our products represent outstanding quality and we’re confident that our offerings rival the best in the market.

Ethics and integrity

Ethical integrity is at the heart of our approach. We believe in doing what’s right for the property and staying true to its character and architectural heritage. If a client or designer proposes a feature – such as a window or door style – that clash with the design integrity of a heritage property, we’ll offer expert advice on a more appropriate solution. However, if they insist on proceeding with an unsuitable option, we won’t compromise our standards or the property’s aesthetic. Instead, we’ll respectfully step away from the project, confident that maintaining our principles is the right decision.

At Sashed, our commitment to quality, ethics, and efficiency ensures that every product we create enhances your property's beauty, function, and integrity.

12. The Sashed process

We’ve designed our process to make your experience as smooth as possible. From the moment you contact us, you’ll be treated with respect, and our team will guide you through every stage, from consultation and survey to design, installation and finishing touches. Our goal is to ensure your complete satisfaction. We want you to love your new windows and doors, and we'll work hard to make sure the result is exactly what you envision.