Can Hardboard Be Place On Top Of Vinyl Tiles

4 loose lay more boards up down and across the room.
Can hardboard be place on top of vinyl tiles. 2 loose lay the first board over the centre with its long edges at 90 degrees to the floorboards. Fill low spots on the floor with patching compound applied with a putty knife. Hardboard is a very poor poor product to use for preping a subfloor. Surely ply has better moisture resistance.
If you are planning to tile over the hardboard make sure that the rough mesh side is facing up to give more of a key for the tile adhesive. I believe you want to be tiling on something like cement board or ditra not directly over plywood. To properly install a new tile surface you should remove the existing vinyl tile grind down as much of the old tile adhesive as possible and then apply the leveling compound to smooth out the surface for the new tile. Stir ready to use floor patching compound with a paint stirring stick.
I was planning on using 6mm plywood for a solid base for vinyl although i see most websites recommend hardboard. It can be confusing because many leveling compounds are marked as useable on a variety of surfaces including linoleum and vinyl. How to 4 laying hardboard and plywood 1 use a chalk line to mark two lines at 90 degree angles to each other across the centre of the room f2. If your flooring is already thick enough needs to be stable to prevent cracking later.