Usage Note
Dämmstoff is the general term for any material used to insulate against heat, cold, or sound — mineral wool, polystyrene foam, hemp, or cork. It is distinct from Dichtungsmaterial, which focuses on sealing rather than thermal performance.
Examples
"Als Dämmstoff wählten sie Mineralwolle für die Außenwände."
Natural Translation
They chose mineral wool as insulation material for the exterior walls.
Literal Translation
As insulation material chose they mineral wool for the exterior walls.

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