That "tar paper" look is probably asphalt cutback adhesive and it is not unlikely that the flooring or old adhesive contains asbestos.
Self-stick tiles are generally not the best way to do floors. The individual tiles can move around a bit and shrink over time.
The subfloor needs to be clean, dry, flat, and sound. You may want to skim some patch on the worn spots.
Self-stick tiles are generally not the best way to do floors. The individual tiles can move around a bit and shrink over time.
The subfloor needs to be clean, dry, flat, and sound. You may want to skim some patch on the worn spots.