This is of course possible. The Floorify Comfort underlay was especially developed to combine with the Floorify rigid vinyl floors. All the features we communicate about the Floorify rigid vinyl floor have been tested and measured in combination with the Floorify underlay (e.g. impact resistance, wheelchair test, transition of sound etc.). If you would opt for another floor than the Floorify subfloor and this leads to suboptimal performance or damage to the Floorify rigid vinyl floor then the extended warranty that Floorify offers to all its products, expires.