Mineral wool in 1840: Edward Parry lore
Read the condition on Mineral wool before the nickname. Year 1840, line “Edward Parry lore,” figure 0. Mineral wool is one of 32 materials in this atlas, grouped under thermal: history, structure, measured properties, process routes, uses, safety and market — not a product catalogue.
Seven chapters follow. Fire and insulation claims name test families (Euroclass, ASTM E84, ISO 5660, KS F) rather than inventing a single safety number. Mineral wool (Ca-Mg-Al silicates / soda-lime glass fibres) is a family of grades whose density 20–150 kg/m³ products, heat band softens ~1000 °C class (stone), and fire letter A1.
Mineral wool is sold as grades, not as a single substance. Chemistry Ca-Mg-Al silicates / soda-lime glass fibres, density 20–150 kg/m³ products, heat band softens ~1000 °C class (stone). This atlas treats Mineral wool as a system: mill route, coatings, tests and the cavity it sits in.
Conductivity note: λ ~0.032–0.040 W/m·K typical batts. Insulation score 86/100 is relative to 32 entries — metals lose, VIPs and aerogels win. Fire letter in editorial use: A1. Do not equate A1 with “safe in a blaze” or E with “illegal”. Assemblies decide. Origin: Slag wool 19th c.; glass wool 1930s, US / Germany / Denmark. The process chapter follows feedstock → conversion → forming → finish → install.
The label keeps Mineral wool, 1840, and 0. “Edward Parry lore” is the condition on the figure.1840
Figures to keep
- Year of the condition
- 1840
- Property figure
- 0
- Material
- Mineral wool
- Use line
- Edward Parry lore