4 Wellington Place, Leeds
- Location
- Leeds
Project Dahlia
Rotherham
- Location
- Rotherham
- Year
- 2025
- Client
- Harworth Group
- Architect
- Harris Partnership
Expert Façade Delivery for Contemporary Landmark Office Scheme
Project Dahlia is a landmark commercial office development in Rotherham, which draws inspiration from the historic mining and heritage of Waverley. Designed as a new headquarters and central hub for its occupier, the two-and-a-half-storey building has pride of place as a bold architectural statement. Contemporary design combines glazing with corten steel and natural stone to create a building that is both modern and contextually rooted.
CCL Facades was appointed by Lindum Construction to design, supply and install the complete building envelope, including a façade solution capable of delivering strong visual impact while meeting demanding performance, durability and sustainability criteria.
Delivering a Complete Building Envelope
CCL Facades designed, supplied and installed the full external envelope package, ensuring effective coordination between all façade elements.
The scope included Technal curtain walling, an Assa Abloy revolving entrance door, an SFS secondary framing system, corten steel rainscreen cladding, corten steel gutters and polyester powder-coated aluminium soffits.
Delivering the full scope of the façade package, CCL Facades managed all design interfaces and installation requirements from a single point of responsibility. This approach ensured consistency across the envelope, while maintaining the high-quality finish expected for a prominent commercial development.
Corten Steel Rainscreen and Façade Detailing
A defining feature of the building is its corten steel rainscreen façade, which covers approximately 645 sqm. The system utilised 2mm thick corten weathering steel panels installed using the Sotech Optima FC+ secret-fixed hook-on system, with 20mm vertical and horizontal joints in line with manufacturer detailing.
Vertical anodised aluminium mullions were fixed back to the sheathing board and SFS framing using aluminium helping-hand brackets. Within the cavity, 225mm of Rockwool Rainscreen DuoSlab insulation was installed to achieve the required thermal performance.
The façade design also incorporated a range of bespoke corten steel fabrications, including flashings, trims, copings and fins, reinforcing the building’s industrial aesthetic. Copings were supplied in lengths of approximately 1.4 m due to their girth, while the architectural fins were detailed with open ends to align with the design intent.
Sustainability & Performance
At lower level, the recessed façade gutter was waterproofed using a Weatherfast liner. During the design review stage, CCL Facades identified that the original gutter depth may need to be increased to accommodate outlet sizing and freeboard requirements, demonstrating a proactive duty-of-care approach to long-term performance.
Soffit areas were completed using a 2mm thick polyester powder-coated aluminium plank system supplied by Sotech. The planks, nominally 390mm wide, were installed perpendicular to the façade with concealed fixings and supported by aluminium rails, brackets and drop bars fixed back to the concrete slab. The system accommodated cavity depths of up to 940mm, with 150mm thick Rockwool Soffit Slab installed to enhance thermal performance.
Designed to achieve a BREEAM Excellent rating, Project Dahlia reflects a strong commitment to sustainable construction. Through careful design coordination, high-quality materials and precise installation, CCL Facades has delivered a façade solution that supports both the architectural vision and the building’s long-term environmental performance.
