Installing vinyl or laminate floor on unlevel subfloor.
The floor is not level or square, built in the 70's. The plywood subfloor is in good condition. The floor may roll a marble and looks to slope now that the carpet has been removed. We've been told that laminate flooring requires the floor to be level but that vinyl flooring is more forgiving. How forgiving is vinyl in regard to an unlevel subfloor? Is it a visual and light reflective concern or will the vinyl crack over use in a period of 3-5 years? What is the best way, techniques and products, for the DIY to level the floor to acommodate either laminate or vinyl flooring?