End joint gapping/buckling of luxury vinyl tile and planks has been a concern for several years and has cost the industry more headaches, time and money than we ever thought it would. Yes, it’s a category of flooring that has taken off in terms of demand, but it has its issues. Are these problems manufacturing-related, installation-related or site-related? My personal thoughts are: all of the above.
There are manufacturers that have added fiberglass or composite cores that seem to help with the dimensional stability of their products. Still, many don’t because they are trying to maintain price points.