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AC hardness ratings are a standardized measure adopted by The Association of European Producers of Laminate Flooring (ELPF) . The AC measure rates abrasion resistance, impact resistance, resistance to staining and cigarette burns, and thickness swelling along edges. If a laminate flooring cannot meet the requirements for each of these ratings, approval for a given AC rating will be denied. All laminate flooring distributed by KronoLOC has a minimum punishment class of 23 for residential use (heavy) and 31 for commercial use (moderate), or an AC3 rating. AC ratings 4 and 5 are equally suitable for residential use as AC3 but somewhat more suitable for high traffic commercial applications. AC ratings below 3 are recommended for low traffic residential use only. Here is a more detailed guide:

  • AC1 is suitable for lighter, more infrequent traffic, e.g. a bedroom.
  • AC2 is suitable for general residential use in living rooms and dining rooms.
  • AC3 can be applied to more varied locations, such as small offices and other light commercial location
  • AC4 can be installed in higher traffic commercial areas such as boutiques, busier offices, and restaurant
  • AC5 is more durable still and can withstand the traffic of heavier commercial areas such as department stores and public buildings.
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