used to get a lot of the marks especially with traditional oak jumbo planks. you never see it until you stood up away from it or if natural light hit it.
The tec guy from Amtico came today and had a look at the floor said it was soiling and will be O.K after using their stronger care kit with the alkaline solution in it.(will have to waite and see on that one as no-one seems to know where this soiling has came from) He also complemented me for making a great job of the floor and the screeding
I`m afraid I didnt daz but have been told by mnay people that "spacia"is definetly made in China,fitted a quite a lot of spacia over the past few weeks and mostly it has been good with the odd exception