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This document specifies a test method for the determination of settlement of loose-fill insulation in ventilated attics. This test method measures aging in relation to temperature and humidity fluctuations; however, other factors such as impact, seismic effects, or vibrations of any kind may also influence changes in thickness. The responsible national standardization committee is Working Committee NA 005-56-60 AA "Wärmedämmstoffe (SpA zu CEN/TC 88 und WG 1 bis 9, WG 12 bis 16, WG 19 bis 23, ISO/TC 61/SC 10, ISO/TC 163 (teilweise), ISO/TC 163/SC 1 und SC 3 (teilweise))" ("Thermal insulation materials (national mirror committee CEN/TC 88 und WG 1 bis 9, WG 12 bis 16, WG 19 bis 23, ISO/TC 61/SC 10, ISO/TC 163 (partly), ISO/TC 163/SC 1 und SC 3 (partly)") at DIN Standards Committee Building and Civil Engineering (NABau).