A low window may require the countertop to extend into the sill or stop beneath existing trim. Wall and sill irregularities can create visible gaps around rigid slab material. A stone or quartz sill can coordinate with the countertop but requires additional fabrication. Window operation, water exposure, casing removal, and future replacement should be considered.

Key considerations

  • fit accuracy
  • water resistance
  • appearance retention
  • integrated sill
  • custom notching
  • coordinated trim
Ask an Expert