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Fully-certified and sustainable bespoke timber windows and doors

We supply traditional timber products that are rooted in British craftsmanship. Perfecting our methods over several decades, our aim is to set standards above the humdrum of mass production.

Nine Zero products include trade supply timber sash windows, timber casement windows, timber bifold doors and timber sliding doors.

Our joinery is proudly made in our Cornwall workshop by accomplished craftsmen, with meticulous attention to detail and state of the art technology. We made the decision to begin production in the South West of England to overcome the difficulty of an extended supply chain.

From period and historic buildings to modern urban designs, our joinery is specifically designed to suit every character and style of property. Our experienced team’s focus is to provide bespoke timber products, tailored to suit the requirements of a vast range of projects.

We deliver nationwide, whether you are developer, architect, installation business or homeowner, we welcome your enquiry.

What makes our timber windows and doors unique?

A devotion to preserving the beauty of the traditional heritage homes of London and its surrounds is where Nine Zero Timber Windows and Doors was born. Our handpicked experienced team of qualified designers and joiners have developed our products to meet the challenge of achieving high security, energy efficient products whilst retaining all the character and beauty of traditional timber windows and doors. This commitment to customer satisfaction and speed is where we excel.

Made in the UK

Made in the UK

Nine Zero timber windows and doors are proudly produced from our Cornwall workshop, supplying trade and commercial customers with great quality products on speedy lead times.

Guarantee

Guarantee

You can trust our timber, with a 30-year warranty for rot and decay and 10 years for manufacturing and paint.

Sustainable

Sustainable

We use FSC-certified sustainable materials, recycle timber waste, and supply renewable energy to local communities as just a small part of our plan.

Premium materials

Premium materials

Using Engineered Redwood, Engineered Red Grandis and Abodo sustainable timber wherever possible, our products are made from the highest quality renewable wood.

Our Products

Box Sash Windows

Box Sash Windows

Both traditional and trending, our FSC-certified timber Box Sash Windows enhance authentic period properties and improve ventilation.

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Flush Casement Windows

Flush Casement Windows

Sleek and seamless sustainable timber Flush Casement Windows fit with modern and traditional architecture, while offering superior thermal efficiency.

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Entrance Doors

Entrance Doors

Custom-sized, high-performance timber entrance doors and timber french doors with top-tier security, crafted to Secured by Design specifications.

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Bifold & Sliding

Bifold & Sliding

Timber bifold doors and timber sliding doors for secure, indoor-outdoor transitions, customised for cutting-edge architecture and design requirements.

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Spring Sash Windows

Spring Sash Windows

Classic in style, our timber Spring Sash Windows have double sprung balances for smoother operation and up to 75% mechanical advantage.

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French Doors

French Doors

Secure, stylish and multifunctional timber French doors, handcrafted from the highest quality renewable wood.

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Become a Nine Zero trade partner

Help us to help you. Nine Zero trade supply partners get personalised service, preferential rates, marketing support and direct access to our expert team. Email accounts@nine-zero.co.uk to find out more.

Glass, hardware and colours

Nine Zero timber windows and doors come to life with our wide range of glazing options, designed to meet your specific requirements. Choose from slimline glazing ideal for historical restorations, and advanced acoustic glass to soften city living and create a tranquil home.

Style to suit with our extensive hardware selection, including sleek lifts, secure locks, durable fasteners and smooth pulleys in various finishes – all supported by our reliable 5-year warranty.

Mix or match with any colour scheme by choosing any RAL or heritage F&B shade, all guaranteed with a 10-year assurance on our expertly-painted finishes.

Technical

Sustainability and extensive expertise are behind every Nine Zero action, ensuring the materials we select and the designs we craft are central to delivering unparalleled durability in our products.

Our dedication to excellence drives us to explore, test, and ultimately choose only the most exceptional quality timber materials, coupled with the industry’s most effective production techniques.

You’ll see our precision throughout our collection of detailed CAD drawings below, showcasing the meticulously designed profiles and features of each timber window and door product. Should you require further information or professional advice on your project, the knowledgeable Nine Zero team is ready to assist you.

Say hello to team Nine Zero

We love what we do, and it shows. Every member of the Nine Zero team has been selected for their standout skillset and commitment to a sustainable future.

Laura

Laura

Floor Supervisor

Chris

Chris

Company Partner

Alicia

Alicia

Head of Marketing

Francesca

Francesca

Sales Director

Lucy

Lucy

Office Manager

Steve

Steve

Company Director

Contact us for a quick quote

Nine Zero steps up its trade supply when time isn’t on your side. Talk to us about your project today, and let us support you in finding a timber windows and doors solution.

Advice

Nine Zero see a surge in timber flush casement windows, as green retrofits ramp up

Nine Zero Timber Windows and Doors has noted a 20% increase in orders for its timber flush casement windows when comparing Q1/Q2 with Q3/Q4, suggesting…

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Why timber front doors should be the only choice for winter

Choosing a timber front door can make a significant difference to a home’s warmth, security, and overall look. Timber doors, especially those handcrafted by Nine…

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Nine Zero Sustainable Timber Windows

World Sustainability Day: Why we need to point to timber as the sustainable building solution

World Sustainability Day on October 30th highlights the importance of sustainable practices, and while this is great, the glazing industry needs to think about energy…

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What our clients say

“Our building is in an ANOB, world heritage site, and an SSSI. We wanted windows that would look authentic, were affordable, and would meet the challenges of a coastal location – saline air, high UV, and strong winds. The material had to withstand corrosion, be adjustable over its lifetime, and, with normal maintenance, last 30 years or longer. We considered plastic and aluminium windows but were not convinced they could meet the criteria.

We decided on Nine Zero after visiting the workshop in Cornwall and meeting the team. Communication was important in determining the design and final detailing of the windows. We were happy with the process and the resulting windows look great.”

James Burton, Director, Bere Property Ltd

“Nine Zero were recommended to us by a local timber business owner for lead time: the order process was simple, people were friendly on the phone, and we were delighted with the quality. A friend who has 35 years’ experience of running a high-end timber business was also very impressed.”

Mr Nick Denman, Hastings, England

Sustainability

Environmental consciousness and sustainability are essential if we are to preserve a healthier planet for future generations. That’s why we’ve made a significant commitment to eco-friendly practices by establishing Nine Zero in the heart of Cornwall.

Since 2017, drawing on over 15 years of supplier expertise from our sister company Sash Windows London, we’ve set the bar for sustainable timber windows and doors. This was more than just an expansion; it represents our unwavering dedication to meet the growing demand for green building materials, while upholding the premium quality and unparalleled expertise that our customers have come to rely on.

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Request a brochure

To explore our range of sustainable timber windows and doors and imagine the possibilities for your project, request a Nine Zero brochure by contacting our team today.