FOUNDATIONS & ENCLOSURE SYSTEMS
A successful timber frame begins long before the first bent is raised and is only complete when it is thoughtfully enclosed. This five-day course explores the critical systems that support and protect residential timber frame structures: Foundations and Enclosures. Designed for builders, designers, and owner-builders, the class emphasizes how these systems integrate specifically with timber frame construction, balancing structural performance, durability, energy efficiency, and material choice.
The first two days focus on foundations, examining when different foundation types are appropriate for timber frames and how design decisions affect long-term performance. Students will study pier foundations— poured, pre-cast and helical piles—along with frost walls and full foundations/basements. Discussions will include load paths unique to timber frames, the use of pilasters, varying wall thicknesses, and how site conditions, climate, and building use influence foundation selection.
The final three days are dedicated to enclosure systems, with an in-depth look at wall and roof assemblies commonly paired with timber frames. One day will focus on studded and double-studded wall systems and possible roof assemblies, including best practices for air and vapor control using smart vapor retarders such as Pro Clima products and similar systems. Another day will explore Structural Insulated Panels (SIPs), covering their advantages, limitations, detailing considerations, and how they interface with timber frames. The final day introduces natural enclosure systems, including straw bale and straw-clay construction, and if time allows an overview of natural plasters and their role in durable, breathable wall assemblies.
Throughout the course, emphasis is placed on understanding why certain systems are chosen, how they perform as part of a whole building, and how to adapt details to different design goals—from high-performance and durability to natural and low-impact building approaches. By the end of the week, students will have a clearer framework for selecting and detailing foundation and enclosure systems that complement the structural and aesthetic strengths of timber frame construction. Note: Lunch will be provided throughout the course
Who this class is for:
This course is designed for builders, designers, architects, and owner-builders who want a deeper understanding of how foundations and enclosure systems integrate with residential timber frame construction. It is well suited for those planning to build or design a timber frame home, as well as professionals looking to strengthen their knowledge of system selection, detailing, and performance. While prior building experience is helpful, the course is accessible to motivated beginners with a strong interest in timber framing and whole-building design.
Instructor:
Alex Weeden
(see INSTRUCTORS page to view instructor bios)
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AVAILABLE DATES:
