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INCA Case Study: Holbeck Project, Leeds


Holbeck Project, Leeds

Project Type: Refurbishment

Building Type: Low Rise, Residential

Architect: N/A

System Designer: Soltherm

Installer: Surefire Management Services Ltd

System & Finish: Soltherm S75 Briq ID

U-value Before: 1.96 W/m2k

U-value Achieved: 0.29 W/m2k

In the heart of Leeds, a project journey unfolded, breathing new life into solid wall back-to-back terrace houses. Leeds City Council, driven by a commitment to enhance thermal efficiency and reduce heating costs, selected these homes for a remarkable transformation through external wall insulation (EWI). It was a mission that sought to bring comfort and savings to the residents while preserving the original charm of the properties.

Collaboration and consultation were at the forefront of this project, and it was agreed during the consultation stage that the original look of the properties would remain post-installation. With this goal in mind, we created an energy-efficient solution that would seamlessly blend with the existing façade. The exceptional Endurance S75 system with Brick ID was chosen, renowned for its durability and impressive effective lifespan of 75 years.

The Soltherm 75 EWI system is unique to the industry, incorporating mineral wool and cutting-edge technologies to ensure the utmost safety in the market. With its A2 fire rating, it surpasses industry standards for protection against delamination, wind-loading, and durability. Rest assured, this system is designed to withstand the test of time and provide unparalleled performance and peace of mind for the residents.

But the benefits didn’t end there. The EWI system also held the esteemed Ofgem innovation approval, unlocking enhanced funding opportunities and increased property eligibility for social housing projects. This meant that properties in the SAP Band D category could benefit from uplifted funding levels, supporting regeneration and fuel poverty initiatives. It was a remarkable opportunity to make a real difference in the community while accessing significant financial resources.

The Soltherm 75 EWI System has been designed in such a way as to provide the end user with a high level of quality and value, surpassing the standards currently set by the industry:

  • Approved for over 75 years by Ofgem.
  • Viable ECO solution for EPC ‘D’ rated properties
  • Capability to generate higher ECO funding rates.
  • A2 fire rated and approved unrestricted in height.
  • Industry leading weather resistant technology
  • Superior wind load resistance prevents delamination and shear deformation.
  • Perfectly suited to the UK environmental conditions

Throughout this project, over 3500m2 of the Solthem 75 EWI system was installed, ensuring that the brick slip finish perfectly matched the original façade through using Soltherm’s unique facility. Black sills and detailing to achieve the council’s goal of maintaining the aesthetic integrity of the properties were also included.

Social value played a significant role in this project. Together, Surefire, Soltherm, and the contractors Wates dedicated their time and resources to make a positive impact. Over 48 hours, they joined forces to plant over 2000 trees in Leeds, contributing to the environmental well-being of the community. Additionally, 18 full-time equivalent employment opportunities were generated for local individuals, demonstrating a commitment to the growth and prosperity of the area. An apprentice was taken on, and 12 weeks of work placements were offered to Leeds building college students. The project managers and site managers went above and beyond, supporting virtual work experience calls and providing 120 hours of training to upskill the local workforce. To further support the regeneration of the area, Soltherm centralised the production of an innovative product in their Leeds warehouse, creating employment opportunities.

Undoubtedly, this project posed its own set of challenges, particularly due to the back-to-back nature of the properties. The roof lines were extended to accommodate the installation of the EWI system and ensure compliance with PAS regulations, all while replicating the original design of the façade. To enhance system stability and robustness, the innovative Soltherm Cross-Knot fixing method with clamping rings was employed, ensuring a secure and durable installation.

As the project reached its completion, representatives from Wates, the contractors involved, spoke to the residents, eager to hear their feedback. The response was overwhelmingly positive. Residents expressed their delight with the completed job, noting the noticeable warmth in their living rooms and the overall improvement in comfort. It was clear that the insulation had made a significant difference, bringing joy and comfort to the residents’ lives.

Here is a snippet of what they said:

“Delighted with the job” – Crosby Terrace resident.

“Living room is warmer inside now” – Crosby Road resident.

“The house is so much warmer now the insulation has been fitted.” – Shafton Street resident.

In conclusion, the solid wall back-to-back terrace house project embarked upon by Leeds City Council stands as a testament to their commitment to creating sustainable and energy-efficient homes. Through collaboration, consultation, and the application of cutting-edge technologies, these homes have been transformed into comfortable, cost-effective dwellings while preserving their original character. The project’s social value initiatives have left a lasting impact, creating employment opportunities and supporting the growth of the community. The feedback from residents speaks volumes, affirming the success of the project and the positive changes it has brought to their lives.

Social value played a significant role in this project. Together, Surefire, Soltherm, and the contractors Wates dedicated their time and resources to make a positive impact. Over 48 hours, they joined forces to plant over 2000 trees in Leeds, contributing to the environmental well-being of the community.


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