Calcolatore Cornice a Soffitto — Formula

How to Calculate Crown Molding

Formula

Total Material = Perimeter x (1 + Waste %)

Crown molding runs along the ceiling-wall junction all the way around the room. Unlike baseboard, there are no door openings to subtract. However, crown molding cuts generate more waste because compound miter cuts at corners consume extra material.

Waste Guidelines

  • Simple rectangular rooms: 10-15%
  • Rooms with many corners or alcoves: 15-20%
  • First-time installers: 20% (practice cuts needed)

    • Esempio Risolto

    A 16 x 12 foot room with 4 inside corners, no outside corners, and 15% waste.

    1. Perimeter = 2 x (16 + 12) = 56 ft
    2. Total with 15% waste = 56 x 1.15 = 64.4 ft
    3. Pieces needed = ceil(64.4 / 12) = 6 twelve-foot pieces
    4. Corner joints = 4 inside + 0 outside = 4 joints