1. Clean, sweep or vacuum subfloor of all debris.
2. Check subfloor. Should be clean, dry and level.
3. Roll out underlayment to length of room.
4. If below grade, extend up the wall 2”.
5. Underlayment has lip and tape joining system. Join seams together, overlap the film lip and attach to the adhesive bead. Make sure to remove tape release liner before applying film lip.