Buildings
Structure, lining, insulation or finish depending on family.
Vacuum insulated panel · A sealed vacuum sandwich — λ around 0.004–0.008 W/m·K until the envelope leaks.
Vacuum insulated panel earns its keep in systems: a beam, a batt, a fibre blend, a coated steel — rarely a lone coupon.
Products below are cultural landmarks as much as SKUs.
Structure, lining, insulation or finish depending on family.
Mass, fire and fatigue rewrite the grade list.
Heat, voltage and hydrogen compatibility.
The volume that pays for the mill.
When allowed — extractables and allergies matter.
Ballistics, FR clothing, fire stops.
1892
1990s
2000s
1990s–
1960s–
2010s
component
1960s–
Solid ultra-low λ without a vacuum to lose.
Thick, cheap, puncture-proof.
The usual thin-ish organic board.
Stores heat rather than blocking it.
If the pairing is wrong, the material will be blamed for a system fault.
Melted rock or glass spun into A1 batts — the default non-combustible insulation of codes.
Overall 69 🧽The low-λ organic foam of fridges and buildings — excellent insulation, a fire design problem unless PIR and coverings are honest.
Overall 46 🕯️Latent-heat packets that flatten temperature swings — not a substitute for λ insulation, a complement.
Overall 36