Decorative board having hot-melt resin joints

A flooring board assembly comprising:

• a plurality of board parts, each said board part having a front surface and a back surface, the back surfaces of the assembled said plurality of board parts being coated with a flexible sheet;
• each said board part providing generally opposed tongue and groove formations thereon engagable with the groove and tongue formations, respectively, on an adjacent said board part of said assembly, each said board part being further formed with a first notched surface below said tongue formation thereon and a second notched surface below said groove formation thereon, the corresponding said first and second notched surfaces of any pair of adjacent said board parts forming a groove-like cavity upon engagement of the corresponding said tongue and groove formations thereof;
• response to upward or downward flexure, respectively, of one of the corresponding pair of engaged said board parts so as to conform said flooring board assembly to an uneven floor system;
• and
• each said board part being further formed with a plurality of perpendicular grooves on the front surface thereof and a plurality of notches on the back surface thereof.