For best results it is highly recommended that you use Xtrafloor underlay.

Xtrafloor Underlay can be laid over existing floor coverings such as ceramic tiles, linoleum, and level floorboards, as long as the subfloor shows no irregularities bigger than 5mm wide and 2mm deep. If so, you must screed or plywood the floor before installation. Leave expansion gap around walls.

Always read the installation instructions.