Technologies · 4 Aug 2026 · 6 min
Inside the BioSIP panel line
Compressed agricultural fibre and mycelium binder, pressed to structural tolerance in 90 minutes.
Library
A Neufert for the sustainable era
Open specifications, production logic and measured performance. Everything here is written to be copied into a real drawing set.
Reference
Key figures
0.14 W/m²K
BioSIP™ envelope
Structural insulated panel, agricultural fibre + mycelium binder
41 MPa
ReedStrand™ cassette
Bending strength; 7.2 m clear span floor and roof elements
62%
Bio-Cell™ facade
Light transmission at cavity-wall thermal performance
90 min
AIOS production cell
Press-to-tolerance cycle per structural panel
−65–70%
Energy demand
Against a code-minimum reinforced-concrete reference dwelling
−43%
Whole-life carbon
kgCO₂e/m² GIA, EN 15978, eleven completed buildings
| System | Metric | Value | Standard |
|---|---|---|---|
| BioSIP™ panel | Thermal transmittance | 0.14 W/m²K | ISO 6946 |
| BioSIP™ panel | Airtightness | 0.3 h⁻¹ @ 50 Pa | EN 13829 |
| ReedStrand™ OSB | Bending strength | 41 MPa | EN 310 |
| ReedStrand™ OSB | Clear span (cassette) | 7.2 m | EN 1995-1-1 |
| Bio-Cell™ insulation | Thermal conductivity | 0.036 W/mK | EN 12667 |
| Bio-Cell™ facade | Light transmission | 62% | EN 410 |
| AIOS™ cell | Production tolerance | ±1 mm | Internal QA (vision) |
| AIOS™ cell | Panel cycle time | 90 min | Line measurement |
| Whole building | Whole-life carbon | −43% kgCO₂e/m² GIA | EN 15978 |
| Whole building | Heating demand | −70% kWh/m²·a | EN ISO 52016 |
Specification
Technical data — the Neufert standard
| Property | Value | Standard |
|---|---|---|
| U-value (envelope) | < 0.15 W/m²K (0.14 measured) | ISO 6946 |
| R-value (envelope) | R-40 · 7.14 m²K/W | ISO 6946 |
| Fire class | Class A · A2-s1,d0 | EN 13501-1 |
| Seismic resilience | 8.0+ magnitude · lightweight diaphragm | EN 1998-1 / TBDY 2018 |
| Material composition | ReedStrand™ facings (2 × 15 mm) + Bio-Cell™ core (240 mm) | EN 300 / EN 12667 |
| Airtightness | 0.3 h⁻¹ @ 50 Pa | EN 13829 |
| Production tolerance | ±1 mm (AIOS™ robotic cell) | Internal QA (vision) |
Material stack
Two layers, one panel
ReedStrand™ is the plant-fibre outer shell; Bio-Cell™ is the insulating inner core. Bonded together they are the BioSIP™ structural insulated panel — one component, two materials, no separate insulation trade.
BioSIP
The assembled panel — ReedStrand skins + Bio-Cell core · 0.14 W/m²K
BioSIP is not a single material: it is the assembly. A plant-based outer shell of pressed ReedStrand facings is bonded to a Bio-Cell insulation core, so skin and core work as one structural insulated panel. Load-bearing, vapour-open and fully compostable at end of life.
ReedStrand
Outer shell / structural facing · 41 MPa bending
The outer layer of the panel: aligned reed strands, harvested annually from managed wetlands and laminated into a densified plant-fibre facing. It carries the bending and diaphragm forces on both faces of the BioSIP panel and spans 7.2 m as a floor or roof cassette.
Bio-Cell
Inner core / insulation layer · 0.036 W/mK · 62% light transmission
The inner layer of the panel: a cellular bio-polymer core placed continuously between the ReedStrand facings, keeping the insulation line unbroken and vapour-open. Used alone as a facade element, the same cell structure diffuses daylight deep into plan.
Official feed
Technical articles
Technologies · 2 Aug 2026 · 5 min
ReedStrand passes its first load tests
Woven reed strands reach 41 MPa in bending — enough for mid-rise floor cassettes.
Technologies · 29 Jul 2026 · 7 min
Bio-Cell and the return of the daylit wall
A translucent cellular facade that insulates like a cavity and glows like alabaster.
Studio · 26 Jul 2026 · 8 min
KITHOMEX integrates the full material stack
The Istanbul practice moves BioSIP, ReedStrand and Bio-Cell into its standard detail library.
Impact · 21 Jul 2026 · 4 min
Short supply chains, long-lived buildings
Sourcing within 180 km cut transport emissions by a further 6%.
Policy · 17 Jul 2026 · 6 min
What the 2027 embodied-carbon caps actually require
A plain reading of the incoming limits, and where bio-based assemblies already comply.
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