Interspan Europe – Strengthening & Repair Division

Interspan Europe has launched its specialist Strengthening & Repair division, responding directly to the reinvention and repurposing of existing structures, which lies at the heart of the London Plan and the EU’s new Energy Performance of Buildings Directive (EPBD). These mandates require all new buildings to achieve zero-emission status by 2030 (European Commission, 2024) and require Member States to drive renovation of the worst-performing existing structures (European Hydrogen Observatory, 2024).

The expansion includes two senior leadership appointments: Marc Daly as Managing Director Europe and Steven Regan as Non-Executive Director.

Interspan’s specialist capabilities in forensic investigation, in-house design capability, and suite of concrete strengthening solutions are positioned to help developers and contractors meet the new regulatory requirements while reducing costs by re-inventing structures.

Increasing capacity to meet the EU’s ambitious net-zero targets and the reuse regulation

Building on the catalogue of experience already in the group through its Australian Specialist Strengthening business, Slabtec, the new division will focus on extending the life and enhancing the capacity of existing buildings across the United Kingdom and Europe – by working with clients and designers to leverage cutting-edge forensic investigation techniques, and using the latest concrete strengthening techniques including Carbon Fibre Reinforced Polymer (CFRP) strengthening, and Ultra High-Performance Concrete (UHPC).

“We’re seeing developers avoid demolition and rebuild, with embodied carbon typically accounting for 30–40% of a building’s total lifecycle emissions (ScienceDirect). “On recent projects, our strengthening work has allowed clients to change the use of buildings including increased building capacity at significantly lower cost and faster project completion  than demolition and rebuild.”

Marc Daly, Managing Director Europe at Interspan

Engineering Excellence Driving Sustainability

Interspan’s work on London’s award-winning Space House project, which won Retrofit Project of the Year at CONSTRUCT Day 2024, enabled the addition of two extra storeys to the Grade II-listed tower while reducing its embodied carbon.

At Sydney’s Quay Quarter Tower, winner of the Best Tall Building Worldwide award, Interspan’s use of several different strengthening techniques enabled a $900 million refurbishment that has set new global standards for sustainable development.

Interspan uniquely integrates in-house post-tensioning expertise, advanced forensic diagnostics, and cutting-edge strengthening technologies to enable a single-source delivery model trusted by global developers for complex retrofit and reuse projects.

With over 350 dedicated specialists across five continents, Interspan accelerates project delivery, reduces embodied carbon, and unlocks structural capacity beyond conventional engineering approaches.

“The European market represents enormous opportunity for sustainable building practices. Our strengthening and repair capabilities don’t just extend building life – they fundamentally change the economics of development by unlocking capacity that owners didn’t know existed. With over 350 specialists worldwide and a track record of delivering over 2 million square metres of post-tensioned floors annually, we’re uniquely positioned to help Europe’s building stock meet 21st-century performance standards.”

James Laws, Executive and Founder of Interspan Global

Interspan-Scape-Lachlan

NEW STRUCTURES

The Interspan Group brings unique expertise in post-tensioning, construction methodology, and lifting operations that reduce CO₂ emissions, material usage, and construction program.

Through effective design, post-tensioned slabs enable material and embodied carbon reductions versus a conventionally reinforced slab, while maintaining the inherent benefits of concrete construction.

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Innovative construction methodologies enable works to be completed outside the critical path in a safe and controlled environment. This approach reduces project costs and schedules, improves safety, and minimises disruption.

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Interspan has extensive experience in the supply and installation of post-tensioning works in bridges, using state-of-the-art equipment to apply uniform stress to the separate strands of the tendon simultaneously.

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Stress bar post-tensioning systems provide a cost-effective solution for applying post-tensioning forces to short, straight tendons without requiring any profiles.

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Post-tensioning is a powerful technique that can enable reductions in materials and carbon emissions through effective design within the construction industry. By adopting post-tensioning, we can build more sustainable, resilient, and environmentally friendly structures, paving the way for a greener future.

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Lifting and jacking operations are essential when prefabricated elements or existing structures need to be moved, raised, or installed with precision.

These techniques reduce reliance on heavy craneage, minimise risks, and enable construction in challenging environments or tight timeframes.

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EXISTING STRUCTURES

We specialise in helping clients extend the life of concrete structures through advanced repair, strengthening, and carbon fibre solutions. Adaptive reuse projects are a perfect fit for our expertise, helping to minimise waste while delivering safe, modern outcomes that support community growth.

Over the last decade, the Interspan Group has become a market leader in the application of CFRP-strengthening solutions, with notable projects including the award-winning The Space House in London and the Quay Quarter Tower in Sydney.

We understand structures. We know why they crack and how to fix them. Our experienced teams design custom solutions to address any kind of crack that emerges. Typically, a crack is the symptom of a problem, not the cause.

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We promote innovative, proven solutions utilising various CFRP-based strengthening techniques depending on the nature of strengthening required for your project. Our knowledge and experience in this area are second to none, and we’re extremely proud of the work our teams do every day.

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We provide solutions for all types of concrete repair. Whether it is due to deterioration, carbonation, damage, or defective concrete, we put forward a remediation solution to ensure the section’s durability and strength are fully reinstated.

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Forensic services are often utilised to assess potential compliance issues between the approved structural documentation and
the built structure. We utilise both non-destructive and destructive testing methods to understand the composition of existing structures.

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Over the last decade, Interspan has developed proven epoxy-based, retrofitted Tendon Truncation procedures that ensure post-tensioned tendon forces can be safely transferred into the remaining structure.

Our teams have decades of experience with post-tensioned structures, and we know how and where to use truncations as well as how to install them safely.

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We have significant experience with structural grouting, and our pumps can mix and place proprietary grouts with or without cementitious or epoxy-based aggregate.

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Jacking and structural monitoring are both critical parts of any safe load transfer process and require expert engineering guidance.

Interspan designs custom solutions for diverse projects that require precision loading/unloading and monitoring of structural elements.

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Corrosion is one of the most common and expensive durability issues stakeholders encounter in both building and civil structures.

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Quay Quarter Tower Sydney,. Adaptive Reuse

Interspan will show you how to reduce materials, cost and CO2.

Interspan Europe operates from offices in London, Dublin, Amsterdam, Aarschot (Belgium), and Mettmann (Germany), serving clients across the European market with design, engineering, and delivery capabilities for complex structural projects.