Can I lay laminate over 1/4 inch OSB board on an old tongue and groove floor?

Q: Can 1/4 inch OSB board be placed over an old tongue and groove floor before laying a laminate floor?

A: I suppose if the existing floor is solid with no movement, and flat, you can do that. I’m just not a great fan of multiple layers. Your top, finished floor will only be as sound as the sub floor it sits on.