Vinyl Tiles & Thermoplastic Tiles... Are these the same thing? Should you definitely not lay screed on either one in order to lay Karndean? Thanks
No no no no, never screed over them, not exactly the same thing but similar if when vinyl tiles your talking amtico or karndean.
Never screed over any floor covering mate, try and take up but be careful incase they're old could contain small amounts of asbestos.