mineral wool
Definition
Noun: A manufactured, lightweight, fibrous material primarily composed of molten rock or slag that is spun into fine strands. It is used extensively as thermal insulation, acoustic insulation, and as a fire-resistant material in construction and industrial applications.
Usage
"Mineral wool" is a non-count noun. It refers to the insulating material as a bulk substance, not to individual pieces. * Common collocations include: install mineral wool, a layer of mineral wool, mineral wool insulation, mineral wool batts (pre-formed sections), mineral wool board.
Examples
- The builders filled the cavity wall with mineral wool to improve the house's energy efficiency.
- Mineral wool is often preferred in attics because it does not burn.
- For effective soundproofing, a thick layer of mineral wool was placed between the studio walls.
Advanced Usage
- Technical Specification: In technical contexts, "mineral wool" is often specified by its type (e.g., stone wool, slag wool) or its performance ratings (R-value for thermal resistance, NRC for sound absorption).
- Passive Fire Protection: It is a critical component in firestop systems and for insulating structural steel to meet fire resistance ratings.
Variants and Related Words
- Rockwool / Stone wool (n): A specific type of mineral wool made from volcanic rock (basalt). Often used as a brand name that has become generic.
- Slag wool (n): A type of mineral wool made from the slag waste of blast furnaces.
- Glass wool (n): A similar fibrous insulation material made from molten glass. While sometimes grouped informally with mineral wool, it is a distinct product.
- Fiberglass (n): The common term for glass wool, especially in North American English.
Synonyms
- Insulating wool (n)
- Fiber insulation (n)
Noun
-
a light fibrous material used as an insulator
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