STEREOTOMY: HIP & VALLEY ROOF GEOMETRY IN TIMBER FRAMING Dec 7–12, 2026

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OVERVIEW:

Stereotomy is an ancient method of developing complex three-dimensional forms using a handmade geometric drawing instead of numeric calculation. Used by master stonecutters and timber framers dating back to medieval times, stereotomy is a powerful approach for understanding and laying out intersecting roof systems, compound angles, and other challenging structural geometry. In timber framing, stereotomy allows builders to move beyond formulas and develop a deeper spatial understanding of how roof forms are designed and constructed.

In this course, students will explore the language of stereotomy through a progression of three increasingly complex scale models of hip-and-valley roofs. Students will each create their own stereotomy drawings and then use them to lay out and build each model. Beginning with fundamental roof geometry and advancing toward more sophisticated intersections, emphasis will be placed on understanding the geometric relationships that govern roof framing, developing accurate layout skills, and translating two-dimensional drawings into three-dimensional structures.

Students will leave with both a practical understanding of roof geometry and a set of unique hand-crafted models and drawings to take home.

Schedul e:

Monday: 9AM - 4:30PM

Tuesday – Saturday: 8:30AM - 4:30PM

Note: Lunch will be provided throughout the course

Instructors:

Ariel Schecter is a timber frame carpenter, designer and educator with a fervor for stereotomy and compound roof framing. He is a fellow of Patrick Moore's Professional School of Practical Stereotomy where he began his studies of stereotomy in 2015 (after taking Patrick's first-ever class in the USA, at the old Heartwood campus in the Berkshires!)
Curtis Milton is an experienced timber frame carpenter, design oriented draftsman and instructor whose decades of expertise encompasses traditional timber framing and advanced roof systems. His intricate understanding of complex hip and valley roofs is matched with an ever-curious, always-learning approach. Curtis has helped generations of timber framers level up their skills and approach more advanced timber framing techniques with confidence.
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STEREOTOMY: HIP & VALLEY ROOF GEOMETRY IN TIMBER FRAMING Dec 7–12, 2026