Just been to have a look at a laminate floor i fitted in a spare bedroom over 6years ago, the customer says the floor has slippery patches, which a couple of people have slipped on,she says the room is hardly used, the floor is clean,there are no visible differences in the areas, there is no evidence of any sort of polish been used. All i could suggest was giving it a good clean and see if it makes any difference, she asked if there was anything she could put on it to make it less slippery. Any ideas or suggestions?