Add More Rows of Flooring
When installing the next rows, place a short piece of flooring to the edge and tap with a mallet to tighten the new row into place before nailing. If the room covers a large area, use a flooring nailer after installing the first three rows. Slide the flooring nailer onto the board's tongue and strike the plunger to drive nails through the tongue and into each joist and the subfloor between joists.
On the final row, use a block and pry-bar to wedge the last boards firmly into position. Glue the last row in, as well as face-nailing it to hold in place.