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ARTICLE · 13 AUGUST 2026

Quantifying Contribution In Post-Grenfell Cladding Claims: Mulalley v Sto

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The Technology and Construction Court has delivered a significant judgment in a post-Grenfell cladding dispute, awarding £1.77 million in contribution against a German parent company that failed to defend proceedings. The case demonstrates how Building Liability Orders under the Building Safety Act 2022 can reach overseas parent companies when UK subsidiaries become insolvent, and provides a detailed framework for quantifying remedial costs and contribution percentages in construction defect claims.

United KingdomReal Estate and Construction
Brett Mason
Brett Mason
James Giddins
James Giddins
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In Mulalley & Co. Ltd v Sto Ltd & Sto SE & Co. KGaA [2026] EWHC 1552 (TCC), the Technology and Construction Court (TCC) assessed quantum on a contribution claim brought by a main contractor against the German parent of a cladding system supplier, following a default judgment that the parent had not defended.

The judgment provides a worked example of how courts quantify remedial costs and contribution in post-Grenfell cladding claims under the Building Safety Act 2022 (BSA) and the Civil Liability (Contribution) Act 1978.

Key takeaways:

  • It illustrates the TCC’s approach to quantifying remedial costs and contribution (here, 87.5% / £1,772,312.17) in a cladding claim where the product supplier’s parent did not participate.

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