In Most Cases, The Main Problem that Owners of the Houses Faces is the Emergence. This Happens Due to the Fact that Over Time The Fastening is Weakening, and the Floor Begins to Bend. Eliminating the Problem Is Quite Simple — You Just NEED to TIGHTEN THE FASTENERS Or Drive New Nails. Cracks Between The Boars are Sealed with A Special Wood Putty. With more Serious Damage, Worn Boars Change.