About viiu

viiu forms part of Fitters Friend Ltd, a wider established construction group that has been in operation for two decades. For the last five of those years we’ve made concerted waves in the slim sliding door market through the manufacture and supply of the sleekest aluminium system yet – viiu. We’ve succeeded by offering a friendly and professional service to architects, key dealer partners, and homeowners alike, letting everyone enjoy the exclusive benefits found in our UK-manufactured sliding door system.

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Exclusive supplier of the viiu sliding doors

The incredibly elegant, sleek, and modern appearance of viiu is something you’ll only find when reaching out to us directly, being the system’s exclusive supplier. We believe to have perfected the seamless blend between minimalist aesthetics and high performance to give both architect and installers a leg-up on the competition while letting discerning high-end homeowners enjoy an unlimited outside view.

Manufacturing viiu from our dedicated factory in Lancashire, every aluminium sliding door comes exceptionally designed down to the most meticulous of details - ready to be delivered anywhere in the UK. Meeting section widths, glazing weight, and system depths can all be customised to account for even the most awkward of apertures.

More about viiu sliding doors

Why add viiu sliding doors to your product catalogue?

viiu is the only ultra slim sliding door in the UK to achieve the PAS 24: 2016 updated security standard.

This alone gives our Key Dealers the "silver bullet" when they are competing for business against other systems. Other unique features to viiu are electronic locking, patented adjustable interlocks and laminated glass as standard.

Working with viiu allows Key Dealers to cater toward the most luxurious of construction projects, providing a truly innovative solution that places both modern function and appearance at the forefront. The entire system is beautifully crafted with precision in mind.

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Aluminium Hifinity doors supplied for modern new build
two installers in navy blue tops

Key Dealer Training

Your success is our success, so using out dedicated training facility we share out years of knowledge to ensure best practices for every project you undertake. In depth training from sales to surveying, installation, technical, and even advice for the best lifting solutions.

Pas 24:2016 accreditation for ultra slim sliding glass doors

PAS 24: 2016 Accredited

viiu is unique in being able to offer customers the security they require, being the only sliding door system that achieves PAS 24:2016. This is thanks to the system's slim but very string integrated interlocks that hold firm with zero separation, far superior to other systems using PAS 24: 2012.

Happy customers

Showroom help

viiu demands to be seen in a showroom. That's why we offer display packages to our Key Dealer partners, allowing prospective clients and architects the ability to get up close and personal. National marketing campaigns create enquiries that are distributed to the nearest Key Dealers' area.

Full home installation of Hi-Finity doors

Discuss your next project with us

Working on a new-build project or modern commercial development? Viiu sliding doors always act as an appreciated addition.


black slimline aluminium sliding doors on brick house

Become a Viiu registered installer

Are you a tradesman interested in adding Viiu to your product portfolio? We supply impeccably engineered Viiu sliding doors at a quick turnaround.

Become an installer


If you like what you see and would like to learn more about Viiu sliding doors, get in touch with a member of the team via an online message.

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    Viiu's showroom in reading


    • P14
    • Parklands
    • Heywood Distribution Park
    • Heywood
    • Lancashire
    • OL10 2TT
    View on google maps

    Some of the photographs featured on the site have been provided by the following: Christophe Van Couteren, Samuel Defourny, Crahay, Jamaigne Architectes & Atelier d'architecture Franck Martinez