We don't have any splitting or warping seams in any of the rooms, but do have one seam in my office that was caused by "user error". This was the first room in which my husband installed the flooring. As a newbie to waterproof flooring installation, he didn't join two planks properly and hear the joining "click". He realized his mistake after finishing half the floor and looking back at his work. He was going to rip everything out to go back and fix, but it is a small spot and I was fine with it letting it be.