SANDING SPECIFICATIONS:
Floor shall be sanded after all other trades are finished. All wood floors shall be sanded using a heavy power driven sander. For the first cut, the floor shall be traversed in both directions going with the grain of the flooring using 36 Grade sandpaper. Follow with 60 Grade and finishing with 100 Grade. All cuts shall be made with the grain and rough or finish sanding on the diagonal will not be permitted without specific permission from the owner or architect. Particular attention should be given on each finishing cut to completely remove the coarser grit marks from the preceding cut. Sanding machine shall not be moved more than two boards at a time for each traverse on any of the three cuts. After sanding, a better overall floor appearance is achieved by screening the floor with a rotary buffing machine. On this last cut, use a floor buffer fitted with fine paper or a fine screen disc, typically 100 - 120 grit, and sand the entire floor to blend circular cuts of the edger sander with the drum sander cuts. The additional screening is strongly recommended for pattern flooring. After sanding, the floor shall be thoroughly vacuumed with a heavy-duty commercial type vacuum. Before any finishing work is to commence the artchitect or authorized representative shall inspect the flooring.
