CLOSE UP: A group of workers blow cellulose insulation into the wooden walls.
Schlüsselwörter
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cellulose,
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men at work,
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wall,
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material,
texture,
environmental,
fiber,
ecological,
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industrial,
recycled,
grey,
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reusing,
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heat,
preservation,
preparation,
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protection,
people,
contractor,
blowing,
scaffolding,
foam,
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thermal,
construction,
site,
wood,
board,
outdoors
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