This glue is designed especially for floating install of a tongue and groove engineered wood flooring. The elasticity in this glue is what separates it from regular wood glue and will prevent cracking from repeat pressure on the flooring seams. This glue passes the ANSI Type II water resistance test and offers superior bonding strength. It is non-toxic and nonflammable, making it safe to use and environmentally friendly. Titebond Tongue & Groove Flooring Glue also resists solvents and water when dry making it the most used edge glue for wood flooring contractors.