Need Innovative Glazing Solutions?
We are more than just a provider of high specification rooflights and structural glass solutions.
We are your dedicated trusted partner – helping bring your architectural visions to life.
Light Solutions

Light Solutions

Ventilation Solutions

Ventilation Solutions

Access Solutions

Access Solutions

Search products

Planning a Project
or In Progress?
Be confident no matter what stage your project we’ll always aim to exceed you and your clients’ expectations with a flexible and open approach.
Light Solutions

Light Solutions

Ventilation Solutions

Ventilation Solutions

Access Solutions

Access Solutions

Search project

The Harrison

Bespoke glass boxes and rooflights for the refurbishment of this historic London building.

Completed late 2025

Access solutions
Light solutions

Client

Aviva

Architect

Anomaly

Location

London

Contractor

RED Construction Group

History

The Harrison (formerly known as Curtain House), located in the heart of Shoreditch, London, is an architectural gem with a rich history. Originally built between 1881 and 1887, the six-storey, 54,000 sq ft building was designed by Richard Crease Harrison & Son as a warehouse and showroom. Its Victorian engineering marvels and heritage features have made it one of the most architecturally significant buildings in Shoreditch.

For over a century, Curtain House has stood as a symbol of engineering excellence. The building was extended in 1887, and throughout its history, it has been a focal point for the local community, known for its distinctive design and cultural relevance. As time passed, the building’s original features, although worn, remained an essential part of its identity.

The Harrison underwent a significant refurbishment to transform the building into modern, flexible Cat A and B workspace. This ambitious project aimed to preserve its heritage while introducing state-of-the-art facilities to meet the needs of today’s workforce.

Project Brief

RED Construction Group appointed us to design, manufacture, and install over 220 m² of bespoke rooflights and specialist glazing for the Curtain House renovation. This scope of work included a variety of custom solutions to improve both the aesthetic and functional qualities of the building while adhering to the architectural integrity and modern requirements of the refurbishment.

Our design featured bespoke glass boxes for the new roof terrace, fixed rooflights to the main roof, and self-supporting pyramidal lanterns to replace the existing low-level rooflights. Additionally, we incorporated dual-pitch and multi-section rooflights over office space and the internal lightwell. Each of these elements was tailored to suit both the existing and new openings in the building.

In line with our commitment to safety and sustainability, all our rooflights were designed to meet CWCT Class 1 or Class 2 non-fragility standards, ensuring that they provide a safe and durable solution for the building. These rooflights will allow daylight to filter through to the top floor offices and the newly introduced internal mezzanine, creating a bright and inviting workspace.

We were thrilled to collaborate with the RED Construction team and the project’s architect, Anomaly, on this exciting refurbishment. We shared focus on sustainable practices, the project aim to achieve a BREEAM Excellent rating and an EPC A rating, contributing to a greener future for The Harrison.

The project was completed late 2025 and when re-opened the building was renamed The Harrison, in memory of the original designer.

In our clients words:

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.

Green and white "Carbon Neutral Organisation" logo with a circular footprint design.

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

Logo displaying "Constructionline Gold Member" in yellow text next to a stylized pillar.

Cyber Essentials

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

Cyber Essentials Certified badge with a blue background and a tick design.

ISO 9001

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

Certification logos for ISO 9001 Quality Management by British Assessment Bureau and UKAS Management Systems.

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.

Logo with the British flag design followed by the text "Made in Britain" in bold gray letters.

Safe Contractor Approved

SafeContractor verifies that contractors meet required safety and compliance standards, giving clients confidence that the suppliers they use are safe, responsible, and legally compliant

Circular badge with a blue and white flower logo, labelled "SafeContractor APPROVED" and the website "www.alcumusgroup.com" at the bottom.