Chris Pennock

Master mason Chris Pennock takes us on a deep dive into the genius of traditional masonry, showing why it’s still highly relevant today. He begins by showcasing ancient dry stone structures, emphasizing that stability in masonry comes from compression, not just mortar. Pennock then explores the purpose of mortar, comparing its historical diversity to bread-making and highlighting the loss of traditional knowledge with modern "just add water" products. A significant portion of the talk focuses on the restoration of Nidaros Cathedral, detailing the problems encountered with early Portland cement mortars and the extensive research and effort put into replicating traditional lime mortars. He shares the intricate process of dismantling and rebuilding parts of the cathedral, including the King's Entrance, emphasizing precise documentation and the skill required for working with medieval stone. Finally, Pennock shares his personal projects, demonstrating the practical application of traditional masonry techniques, including building a stone house and a self-supporting vaulted structure without formwork.

Recorded at third annual Beauty and Ugliness in Architecture conference in Oslo, May 2nd – 4th 2025.