Istraw.blow Straw Insulation
IStraw
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istraw
Embodied Carbon: Not declared on manufacturer website; no EPD available
VOCs / Harmful Chemicals: Insulation made of loose, unbound lignified plant fibres; no binders or chemical additives declared
Structural Strength: Non-loadbearing loose-fill insulation; declared installed density 90–105 kg/m³
Thermal Conductivity: λD = 0.043 W/m·K
Fire Resistance: Reaction to fire Class E (EN 13501-1), tested under EAD 040138-01-1201 and certified under ETA 22/0233.
Acoustics: Not declared on manufacturer website
End of Life: Can be composted or disposed of as green waste if uncontaminated.
Fabrication process: Wheat straw is processed into loose insulation fibres, compressed into bales and installed by blowing or loose filling without added binders
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istraw.blow is a loose-fill insulation made from unbound lignified plant fibres derived from wheat straw. The product is supplied in compressed bales and installed either by blowing into vertical, horizontal or slightly inclined cavities or by loose filling followed by compaction. It is classified as a non-loadbearing insulation material for applications in walls, ceilings and roofs with inclinations below 10°. The declared installed density ranges from 90 to 105 kg/m³. Manufacturing takes place in Kirchanschöring, Germany. Performance is documented in an ETA (ETA-22/0233) and Declaration of Performance under the Construction Products Regulation. There is no Environmental Product Declaration is published.
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