Sizes and Tolerances

Important Information About Sizes and Tolerances

  • The sizes for all rockfaced products are nominal. Due to irregularities in the rockfaced edges, sizes may vary up to 0.5" for flagstone and 1" for caps and treads.
  • The sizes for all sawn products may vary slightly and are nominal to allow for a mortar joint of approximately 0.5".
  • All products have a squareness tolerance of up to 0.125". Individual pieces may be slightly off-square by this amount, and a small percentage may exceed it.
  • Calibrated and hand-split products (other than steps) may vary in thickness by up to 15%. Sawn products may vary in thickness by up to 10%.