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    Persimmon soil-to-aggregate with Ecofill: design and logistics notes for engineers

    February 9, 2026|

    Reviewed by Joe Ashwell

    Persimmon soil-to-aggregate with Ecofill: design and logistics notes for engineers

    First reported on The Construction Index

    30 Second Briefing

    Persimmon Homes has partnered with Leeds-based Ecofill to process surplus on-site soils and clays into certified aggregate replacement materials using mobile plant and proprietary binder mixes, following successful trials on Persimmon developments. The treated material is being used for adoptable roads, retaining walls, piling mats, embankments and trench backfills, with Ecofill stating compliance with relevant national European standards. For engineers, the approach cuts landfill export and imported aggregate haulage, with potential carbon and safety gains on both site logistics and local road networks.

    Technical Brief

    • Binder-treated soils are engineered to behave as “high-performance” aggregate replacements rather than low-spec fill.
    • Ecofill stresses carbon reduction and haulage risk reduction on local roads as key performance outcomes.
    • Approach illustrates how large-volume housebuilders can industrialise site-won material reuse within standard design frameworks.

    Our Take

    Persimmon’s tie-up with Ecofill in Leeds sits alongside its group-wide roll-out of Nexus ReGen’s Materials Exchange Platform, signalling a coordinated strategy to treat soils and aggregates as managed resources rather than waste across its UK portfolio.

    With Persimmon’s 2025 completions already above 11,000 homes, even marginal reductions in imported aggregate per plot from soil re-use could translate into substantial savings in haulage, landfill and primary quarry demand at portfolio scale.

    Among recent Infrastructure–Sustainability pieces in our database, Persimmon is one of the few volume house-builders repeatedly appearing in relation to circular-materials platforms, which is likely to give it an early operational benchmark on low-embodied-carbon groundworks in the UK market.

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    Prepared by collating external sources, AI-assisted tools, and Geomechanics.io’s proprietary mining database, then reviewed for technical accuracy & edited by our geotechnical team.

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