Often, but only after the existing floor is checked. Tiles should be firmly bonded, dry, clean and flat. Loose or hollow tiles, high edges, deep grout lines, moisture and major level changes need correction before installation.
Adding SPC also changes finished floor height. Check doors, skirting, balcony or bathroom thresholds, stair edges, built-in cabinets and transitions to neighbouring rooms. Follow the exact flatness, expansion, underlay and temperature instructions for the selected product; requirements vary by manufacturer and locking system.