Abstract: A pad support assembly for supporting a buffing pad on a floor buffing machine including a pad support member of disk-like construction having a central overhead portion, an annular peripheral portion for engaging the peripheral portion of a pad positioned therein, and a portion connected therebetween, and a pad retainer plate for attaching to the central overhead portion of the pad support member to press a pad therebetween. The pad support assembly may also include an air impervious layer of material positioned between the pad and the peripheral portion of the pad support member so that air cannot flow down into the pad from above should a portion of the pad separate from the peripheral portion of the pad support member due to an irregularity in the floor being buffed. The pad support member should also be constructed so as to prevent air flow therethrough.