Product · Materials Science
Product · InnDex 42 · Evidence provided · High specification risk
Recyclable structural panels with PET-foam cores and natural-fibre skins, engineered for disassembly.
Bio-SIP replaces conventional EPS/PIR-cored SIPs with post-consumer recycled PET insulation and natural-fibre facings (hemp, flax, sugarcane) bonded for mechanical rather than adhesive disassembly. It directly addresses embodied carbon and end-of-life waste in prefabricated envelope systems. Thermal and fire performance are BRE-certified; one completed building and two in-production demonstration projects reported as of late 2025.
Bio-SIP replaces conventional EPS or PIR cores with post-consumer recycled PET foam and substitutes glass-fibre or OSB skins with hemp, flax, or sugarcane facings, all bonded for mechanical rather than adhesive disassembly so that panels can be separated and materials recovered at end of life. BRE certification for thermal performance (U ≈0.73 W/m²K at 100mm) and fire performance to EN 1365-1 Class E establishes a code-aligned baseline that moves this beyond concept. The evidentiary base is thin but real: one completed building and two in-production demonstration projects as of late 2025 put it a step ahead of many materials-innovation claims in this space, even if that record is modest. Natural fibre facings introduce moisture sensitivity that is a legitimate durability question in UK climates — the single completed case study cannot yet answer how bonded hemp or flax skins behave through decades of wetting and drying cycles. Mechanical disassembly is a genuine circular economy differentiator, but it requires trained labour and site discipline that add cost and complexity versus standard glued SIPs, and the recycled PET supply chain is not yet transparent on cost parity at production scale. For a project with circular economy or low-embodied-carbon requirements and appetite to work with an early-market supplier, Bio-SIP is a credible contender — provided the specification locks in moisture protection detailing and the client accepts a limited precedent base.
Third-party thermal and fire testing by BRE is genuine and testable. One completed building exists (verifiable case study). Two 'demonstration' buildings reported in production but not yet delivered or independently verified. No published whole-life carbon assessment (cradle-to-gate or cradle-to-grave) yet available. No field durability data beyond the single Chiddingfold example. 'Commercial launch' language suggests pre-market status; no public pricing, supply chain, or manufacturing capacity data. Website updated Sept 2025 but no recent news releases. Adhesive-free claim needs clarification (does it apply to all seams, or only core–facer bond?). Fire rating is Class E (poorest of A–E scale in EN 13823), not a selling point.
#circular_economy #prefabrication #low_embodied_carbon #natural_materials #structural_insulation #disassembly_design