Gypsum board in : Type X / F
Read the condition on Gypsum board before the nickname. Year , line “Type X / F,” figure 0. Gypsum board has a real loop when sorting is honest. A material is what it is made of, the condition it survives, and where it goes afterward. Gypsum board under “Type X / F” in should say which, with 0 tied to the condition. A figure with no condition is a boast. Readers meet the name on the back of a product, so the code and the history should not share one sentence.
This atlas treats Gypsum board as a system: mill route, coatings, tests and the cavity it sits in. Conductivity note: ~0.17 W/m·K. Insulation score 34/100 is relative to 32 entries — metals lose, VIPs and aerogels win. Fire letter in editorial use: A2-s1,d0 typical; core A1. Do not equate A1 with “safe in a blaze” or E with “illegal”. Assemblies decide.
Origin: Sackett 1894; US Gypsum 1916, United States. The process chapter follows feedstock → conversion → forming → finish → install. Uses span buildings to defence / safety. Pairings matter: mineral-wool. Circularity mark 62/100. Ask which scrap, which certificate, which year. Related atlas entries, a short glossary, and three threads that keep Gypsum board honest.
Timber frames that need this lining. EN 13501-1 reaction-to-fire letter (A1–F), not a wall rating. Thermal conductivity in W/m·K. Lower means better bulk insulation. Declared performance after blowing-agent or moisture drift. The zone where heat or chemistry changes the datasheet.
The label keeps Gypsum board, , and 0. “Type X / F” is the condition on the figure.0
Figures to keep
- Year of the condition
- 0
- Property figure
- 0
- Material
- Gypsum board
- Use line
- Type X / F
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