We are Sashed, trusted experts in beautifully crafted design led joinery.

We design, manufacture, and install unique and exclusive premium timber windows and doors for homes and properties across across England. From heritage homes in conservation areas to modern architectural designs, our bespoke, stunning and sustainable solutions combine timeless elegance with modernity and cutting-edge functionality.

We specialise in architectural windows and doors with ultra low‑profile designs rarely achievable in timber. We thrive on complex, highly bespoke projects.

Our specialist architectural timber products include:

Low profile lift and slide doors.

Our Low Profile Sliding Door system is more than just a door; it’s a statement piece that enhances the aesthetic appeal of any space. With ultra-slim 60mm jambs, frame head, stiles, and rails, this system delivers a sleek, modern look without compromising performance.

Pivot door systems.

Our Pivot door systems can support much more weight compared to doors with traditional butt hinges; this allows the creation of huge door sets using a single-panel door, giving you a grand entrance aesthetic. For example, we can support up to 500kg in a single door, and depending on the type of timber and glazing used, we can create door sizes up to 3340mm wide in a single door panel. Our flexible pivot door profile also allows for sidelights and top lights within the construction of a single frame.

Ultra Slim 134mm sash box.

Our ultra-slim heritage sash box is perfect for buildings with narrow walls. Featuring vacuum glazing and a shallow 134 mm back-to-front frame depth, it replicates the look of a period single‑glazed window without protruding into the room.

Fire proof windows and glazed doors.

Our fire rated windows and doors are designed to resist the spread of fire for 30 minutes using specialist glass. This advanced fire-rated glazing system can even be specified in double-glazed configurations, offering fire protection while also maintaining thermal efficiency. Technically classified as fire rated screens, our fire rated windows are non-opening for maximum fire integrity. We can make them look indistinguishable period-style windows, we have even developed fire rated sliding sash-style windows that have been approved for planning in sensitive conservation areas.

Fire Escape Sash windows.

Our fire-escape sash windows are engineered to open wider by incorporating a side-hung sash within an outer frame, ensuring safe escape routes in emergencies. They preserve the classic sash appearance while providing a reliable solution that meets fire-safety standards. From the outside they look like a conventional sash window but can open sideways to allow easy egress.

Along side our specialist products, we also have our compressive traditional product ranges, which can all be crafted to a projects specific requirement:

Casement windows.

Our ‘modern’ range has exceptionally low u-values and is PAS 24:2022 tested and certified.

Our ‘heritage’ range has slim 56mm stiles and rails - ideal for heritage buildings where you need to closely match period joinery.

Sash windows.

Our classic sash window is ideal for both period and contemporary buildings, and it is also suitable for new builds. Our PAS 24:2022‑tested sash features a slim 150 mm frame depth, giving it the authentic appearance of a period window while meeting modern security standards, including Part Q of the building regulations.

Single, French (double), and Stable doors

There’s a reason we originally ranked No. 1 on Google for “front doors London.” Our doors are extremely popular with discerning London clients. We engineer our timber door-sets with embedded steel elements in the stiles and rails, making them exceptionally stable and robust - eliminating common problems like misalignment, warping, and sticking.

Bi-fold door systems

Sashed timber bi-fold doors blend craftsmanship with innovation, bringing the outdoors into your home while delivering timeless beauty and high performance. We use Centor top-running bi-folding hardware, ideal for large and oversized frames—ensuring smooth operation, durability, and a slim, unobtrusive profile.

Why choose us? 12 good reasons

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.

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.

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.

4. Sustainability at the core

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.

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 are constantly rated as 5 stars by our customers.

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 our customers change their windows and doors with full planning consent.

7. No pressure sales

We don’t believe in pressure-selling.

8. Certified and trusted

We are FENSA registered company, we are also proud to be a Which? Trusted Trader and TrustMark government endorsed.

Our products have been tested by UKAS test bodies.

9. Expert installation

Our in-house, FENSA-approved installers are some of the UK’s most highly skilled timber window and door specialists.

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 whenever needed.

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

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 our clients to love their new windows and doors, and we'll work hard to make sure the result is exactly what you envision.

U-Values Test Result - Casement window (Modern Profile)