That depends on who you are talking about. Most DIY Bed Liners are applied at most 30 mils which is 1/32 of an inch. If you read reviews of Raptor, Al’s and others you will see consumers state that they bought multiple kits.
A professional sprayed bed liner is supposed to be 125 mils in thickness in high use areas and less on verticals. However, this is the game… Some applicators may try and get away with applying less because they make more money and most people would not know the difference.
Spray-Lining Products are produced to be applied at 60 or 125 mils throughout the entire project. We are the only company that offers a DIY system designed to compare with a professional sprayed bed liner like Line-X or Rhino Linings.