A gambrel roof is a roof shape with two slopes on each side. The lower slope is usually steeper than the upper slope.
Why It Matters
Gambrel roofs create useful interior space, but the pitch changes and transitions need proper detailing to shed water and resist weather.
Common Problems
Common issues include transition leaks, ventilation challenges, uneven wear between slopes, and difficult shingle layout at pitch changes.
Building Codes & Industry Standards
Gambrel roof work should follow roofing manufacturer instructions for slope, underlayment, fastening, ventilation, and transition details.
Exterior Echelon Notes
Exterior Echelon looks closely at pitch transitions and drainage paths on gambrel roofs because they behave differently than simple roof planes.
