Yes, you can. But be aware that Floorify Comfort underlay has been specially developed for combination with all Floorify rigid vinyl floors. All of the properties of Floorify rigid vinyl floors that we mention have been tested and measured in combination with this Floorify Comfort underlay (impact resistance, sound absorption, etc.).
If you opt for a different underlay and it causes damage to the floor, the extended warranty that Floorify extends for its products will become void.