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Markal® Pro-EX® Lumber Crayons


Markal® Pro-EX® Lumber Crayons


The professional-grade lumber crayon formula provides extended write out and superior strength, with bright marks and unsurpassed color visibility on a variety of different surfaces in the construction trades. This premium-grade crayon works on wet, dry, hot and frozen surfaces and is ideal for hot and cold climates.


  • Stronger formula for reduced breakage and longer marking life
  • Superior performance on wet, frozen, or treated wood
  • Clay-based formula for smooth, fast marking
  • Marking range: -20°F to 150°F (-29°C to 66°C)


  • Construction
  • Stone and masonry
  • Lumber and timber industry


  • Wet or Dry Lumber / Wood
  • Concrete and stone
  • Metal
  • Plastic
  • Rubber

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