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Definition of Barrier board
1. Noun. (context: roofing) noncombustible board stock material of low thermal conductivity placed between two elements of a roof assembly. ¹
¹ Source: wiktionary.com
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1. Noun. (context: roofing) noncombustible board stock material of low thermal conductivity placed between two elements of a roof assembly. ¹
¹ Source: wiktionary.com