Gambrel Roof Calculator & Construction Guide – Angles, Rafter Length, Height

Gambrel Roof Calculator

Gambrel Roof Features

  • Symmetrical two-sided roof with two slopes on each side
  • Lower slope is steeper than upper slope (typically 8:12 and 4:12)
  • Provides extra headroom in attic space
  • Commonly used for barns, sheds, and Dutch colonial homes

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