ARCC 3202 Lecture Notes - Owens Corning, Vapor Barrier, Glass Fiber
11 Feb 2023
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Very important environmental barrier the thermal barrier (or heat barrier) Location can be anywhere in the wall assembly. Residential thermal resistance values are different from commercial building. Thermal performance found in sp12 for residential and found in sp10 in commercial building. Poly bags with built-in polyethylene vapour barrier - to stuff in header space. Must understand how batt insulation deals with heat. Conduction - stops transfer of heat from 1 material to next; its less conductive to air and thats why its used to fill voids in walls. Convection - stopped by airtight air seals by air cavities; can only limit the convection from occurring in that area: to do so, must provide acoustic sealant from that stud; only in. 1 area, but the insulation itself does not deal with convection: air movement - no effect, air will flow right through the, mineral fibre insulation. Known as rock wool or mineral wool or stone wool.
