[COUNTER- 8 b.] A layer of dry material filled in between the joists of a floor to deaden or prevent the passage of sound; ‘pugging.’
1859. T. L. Donaldson, Handbk. Specif., 841. Counter ceiling to be laid under the ground floor … and … run in with plaster of Paris. Ibid., 864. Counter ceilings to be … composed of lime, sand, screened ashes, and chopped hay … between the joists upon slate bearers.
