Buildings
Structure, lining, insulation or finish depending on family.
Mineral wool · Melted rock or glass spun into A1 batts — the default non-combustible insulation of codes.
Mineral wool 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.
1938–
1937–
1970s–
1970s–
2010s
1950s–
1960s–
19th c.
Lower λ, combustible unless protected.
Better λ, much higher cost.
The lining that faces the room.
When service temperature exceeds stone wool.
If the pairing is wrong, the material will be blamed for a system fault.
The low-λ organic foam of fridges and buildings — excellent insulation, a fire design problem unless PIR and coverings are honest.
Overall 46 📦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