The substrate must be dry, clean and load-bearing. Remove all dry and unsound
particles and bitumen cut-back mechanically. Substrates can consist of e.g.: concrete, screed, wood particle boards, wood planks, steel, natural stone and ceramic tiles.
Level uneven substrates with Servofix-, Servoplan- or Servocret-leveling
compounds. Level substrates with risk of dimensional changes with fiber-reinforced leveling compound Servoplan S 444.