Commodity
Index-linkedBulk Polyurethane foam follows a global index more than a boutique mill.
Polyurethane foam · The low-λ organic foam of fridges and buildings — excellent insulation, a fire design problem unless PIR and coverings are honest.
Darker cells mean a higher score for this topic on that metric.
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Declared reaction class in this atlas: typically E–B with facers; not A1. Assemblies still need resistance tests.
Thermal mark 88/100 versus the atlas. Conductivity note: λ ~0.022–0.028 W/m·K (aged PIR boards, bands).
30–60 kg/m³ rigid boards
Origin story: Otto Bayer 1937; fridge foam 1950s (Germany).
Circularity mark 32/100 — editorial, route-specific.
pyrolyses; does not melt cleanly
heat 36 · fire 28
Prices are bands. A 2024 coil is not a 2026 contract. Labour and certification often dwarf the commodity.
Producers listed are landmarks for orientation, not a ranking or a procurement list.
Bulk Polyurethane foam follows a global index more than a boutique mill.
Tight chemistry, cleanliness or certification multiplies the unit price.
Boards, coats and labour dwarf kilogram prices.
Paperwork is the product.
Low-carbon or bio routes still trade on certificates.
Volume production and finishing.
Standards (EN, Euroclass) and specialty.
ASTM / NFPA language and large domestic mills.
High-spec sheet, fibres, electronics-adjacent ceramics.
Ore, plantations or energy that feed primary routes.
Polyurethane foam moves as coils, bales, boards or chemicals — check HS codes, not vibes.
MDI/TDI and systems.
Bayer materials spin.
Polyols and systems.
MDI.
PIR boards (downstream).
Flexible and elastomeric cousins.
Ask for the route (primary, scrap, bio) before believing a green label.
Melted rock or glass spun into A1 batts — the default non-combustible insulation of codes.
Overall 69 📦A sealed vacuum sandwich — λ around 0.004–0.008 W/m·K until the envelope leaks.
Overall 44 🕯️Latent-heat packets that flatten temperature swings — not a substitute for λ insulation, a complement.
Overall 36