We had lots of money spent on having the Duraceramic floor installed in the kitchen 4 years back (in 2006), attracted by the appearance of the material and lifetime wearout warranty. About 2 years ago, the white spots started to appear, first in the area where the chair legs were, then in more trafficked parts of the kitchen (next to the fridge, next to the sink, etc.); the spots are growing and look really ugly. When we complained to the retailer through which we bought the tiles, they sent the info to Congoleum, and an "expert" showed up in a couple of months. He took a bunch of photos, and from the conversation with him I thought we'll get a replacement floor or compensation. Instead, we got a letter telling that the spots are the result of "abrasion", not of wear, and the manufacturer is not in any way responsible.