St Johns Lane

A sliding rooflight installation with high-performance glazing specification, toughened solar control outer pane with SGP laminated inner pane for excellent light transmission, thermal performance, durability, and safety.

Architect

Squire & Partners LLP

Location

14 St Johns Lane, London EC1M 4BS

Contractor

Curo Construction ltd

Sector

Commercial

Office

History

14 St John’s Lane sits at the intersection of Clerkenwell’s industrial heritage and London’s evolving commercial landscape. Overlooking the historic St John’s Gate, the building occupies a prominent corner position within one of the capital’s most architecturally rich districts. Originally constructed as a commercial office building, the six-storey structure has long contributed to the working fabric of the area. As requirements for workspace have shifted over time, the building’s solid form and adaptable footprint have made it well suited to reinvention.

A modern indoor staircase with black railings leads up to a landing, featuring large windows and a three-wall box rooflight that offers a view of a tall building outside.

A striking three-wall box rooflight with steps leading down and a cityscape visible in the background.

A rooftop features a large three wall box rooflight revealing a stairwell below, surrounded by metal railings and adjacent buildings.

A modern staircase leading down, featuring black handrails, white walls, and a striking three wall box rooflight that floods the space with natural light.

A modern three-wall box rooflight next to a staircase leading down into a white-walled basement with a black handrail.

Glass-enclosed rooftop stairwell entrance featuring a three-wall box rooflight, with black metal framing and white interior walls, leading down a staircase with sleek black handrails.

A modern rooftop glass sliding door partially open, leading from an indoor space with a three-wall box rooflight to an outdoor terrace with gravel and paving stones, overlooking a cityscape.

View from above of a three wall box rooflight with a staircase surrounded by modern buildings, featuring a nearby that brightens the contemporary space.

A modern three-wall box rooflight with large glass panes, set at an angle, bordered by a black metal frame, next to a gravel-lined walkway.

Stairway with beige steps, black railings and white walls under a striking three wall box rooflight.

Project Background

14 St John’s Lane has undergone a comprehensive refurbishment and extension, transforming it into a contemporary, mixed-use workspace designed to support modern ways of working. The project introduced a new fifth floor, upgraded façades, and high-quality internal environments, setting a new benchmark for flexible office space in Clerkenwell.

Positioned at the heart of London’s cultural and professional hub, the reimagined building will offer bright, dual-aspect floorplates, premium amenities, and a strong connection to the surrounding streetscape, delivering a professional yet dynamic flex-space community for its future occupiers.

Project Brief

Curo Construction Ltd appointed Next Generation Rooflights to design, supply, and install a bespoke electrically operated three-wall box rooflight at 14 St John’s Lane, providing both daylight enhancement and safe access onto the new roof area.

Measuring 2,600mm wide by 3,600mm span and rising to 1,300mm high, the rooflight was engineered as a precision solution tailored to the building’s new roof configuration. The structure was finished externally in a custom PPC RAL 7021 (Black Grey), carefully selected to complement the contemporary architectural palette of the refurbishment.

High performance glazing and solar control

The rooflight incorporates a high-performance glazing specification, combining an 8 mm heat-soaked toughened solar control outer pane with a 14 mm argon-filled cavity and black warm-edge spacer, alongside a 13.5 mm heat-strengthened SGP laminated inner pane. This configuration delivers excellent light transmission while maintaining thermal performance, durability, and safety.

Fully integrated

Fully integrated into the building management system, the rooflight features electric operation with battery backup, an integrated rain sensor, and touch access keypads both internally and externally, ensuring reliable operation and controlled access under all conditions.

Working closely with the wider project team, including architect Squire & Partners LLP, our contribution supports the building’s wider sustainability ambitions, which include BREEAM Excellent, EPC A, WiredScore Gold, and the integration of solar technologies. As with all our systems, the rooflight reflects our commitment to industry-leading, carbon-neutral design, suitable for both commercial and residential applications.

Future focused workspace

Completed December 2025, 14 St John’s Lane now stands as a refined, future focused workspace — combining heritage context, modern engineering, and high-specification design in the heart of Clerkenwell.

Contact Your Next Generation Rooflights Trusted Advisors Now

In an ever-changing architectural landscape, we strive to remain at the forefront with our versatile and innovative rooflights that give you flexibility and unique design possibilities. Connect with us at 01223 792 244 or reach out to info@nextgenrooflights.co.uk and discover a whole new dimension to your architectural design with Next Generation Rooflights.

Video below shows the electrically operated three-wall box rooflight smoothly opening

In our clients words:

We recently had the pleasure of working with Next Generation Rooflights on the design, manufacture and installation of a large bespoke mono pitch atrium rooflight. From start to finish, the experience was exceptional. The team demonstrated outstanding professionalism, expertise, and attention to detail throughout the entire process. The rooflight itself was perfectly tailored to our specifications and enhances the natural light in the space beautifully. The quality of the materials and craftsmanship is evident, and we have received numerous compliments on the stunning design. We were particularly impressed with the team's commitment to meeting our deadlines and their ability to navigate the complexities of the project with ease. Their communication was clear and consistent, ensuring that we were always informed and confident in the progress. Overall, we couldn't be happier with the result and highly recommend Next Generation Rooflights for any rooflight installations. Their dedication to excellence and customer satisfaction is truly commendable.

James Hunt, adt workplace

We've been working with the team for quite some years and find their customer care second to none. The products are always on point and manufacturing is flawless. Communication is always swift and informative. All we really want in the rooflight world is, quick answers, good prices, great products, and delivery on time. They tick all these boxes.

Sam Goodwin, Alpha Structures

The Hurlingham Club project demanded a sensitive and technically complex approach, and Next Generation Rooflights proved to be a good partner throughout. From early design development to installation, the NGR team worked with us to deliver bespoke rooflights that both complement the Club’s historic character and improve the quality of the internal spaces. Their technical capability, collaborative approach, and attention to architectural detail were key to the success of the project. We would happily use their expertise on our future projects.

Howard Pye, Associate Director, Jestico+Whiles

The Hurlingham Club was a highly detailed project that required careful coordination across all trades. Next Generation Rooflights proved to be a reliable partner on site, delivering bespoke rooflight solutions to a very high standard. Their team’s professionalism, proactive approach, and commitment to meeting programme requirements ensured the installation was completed safely and efficiently working closely with the Knight Harwood project team and interfacing sub-contractors. We valued their collaborative attitude and the successful outcome, and would be pleased to work with them again on future projects.

Peter Howe, Director, Knight Harwood

We have been working with the team for approximately 3 years now. Their sales and technical team are always very proactive and helpful with any request to quote for projects or alter technical drawings. We use them as their quality of product is unmatched, we look forward to continuing to build the partnership with them over the coming years

Luis Evitt, Rooflight Solutions

Our associations

Carbon Neutral Organisation

At Next Generation Rooflights we are committed to reducing our greenhouse gas emissions as much as possible and offsetting the remainder through verified carbon offsetting schemes.

Constructionline Gold Member

Next Generation Rooflights are an accredited Constructionline Gold Member the high-level accreditation that demonstrates our competence and compliance to buyers in the construction industry

Cyber Essentials

Next Generation Rooflights are a Cyber Essentials certificated company we ensure our and your customers' data safe from cyber attacks

ISO 9001

Next Generation Rooflights is certified BSI ISO9001 to ensure the standards of our high quality rooflights

Made in Britain

Next Generation Rooflights are designed and crafted to clients exacting specifications at our Suffolk factory to ensure high-quality British products – Proudly Made in Britain.