Gypsum plaster
Jericho and Egypt used burnt gypsum.
Plaque de plâtre · Panneaux de gypse dihydraté qui achètent du temps d’incendie en se calcinant.
Plaque de plâtre did not arrive as a finished commodity. Sackett 1894; US Gypsum 1916 around United States still explains who makes it and which tests it sits in.
Ten dated points, five eras and three milestones below are the spine — not a complete industrial history.
Jericho and Egypt used burnt gypsum.
Paper-faced gypsum panels in the US.
US Gypsum brands the wall.
Speed over lath-and-plaster.
Glass fibres in core for fire assemblies.
12.5 mm as the module.
Green / blue boards, still not exterior grade.
European board types (A, F, H, D…).
Multiple layers for EI 60–120.
Closed-loop from jobsite offcuts in some markets.
Jericho and Egypt used burnt gypsum.
US Gypsum brands the wall.
Glass fibres in core for fire assemblies.
Green / blue boards, still not exterior grade.
Multiple layers for EI 60–120.
Speed over lath-and-plaster.
Green / blue boards, still not exterior grade.
Closed-loop from jobsite offcuts in some markets.
Knowing this timeline is how to read a mill certificate without treating Plaque de plâtre as timeless.
Méta-aramide DuPont : tenues pompiers, papier électrique, char sans goutte fondue.
Global 65 🧯Peintures qui gonflent en charbon isolant : un R sur l’acier sans plaques épaisses.
Global 58 🌡️Fibres réfractaires 1000–1400 °C : fours, joints, prudence respirable que l’AES tente d’alléger.
Global 62