In this episode, we trace the evolution of timber as a building material, from primitive shelters shaped with stone tools to its resurgence in modern sustainable construction. We explore how timber’s natural properties, including its grain structure, strength, breathability, and ease of use, have made it a foundational element in buildings across centuries. We look at species relevant to the UK, the rise of engineered timber, and timber’s widespread use in domestic housing, from floor joists and roof structures to doors, stairs, and decorative joinery. We also examine the risks, rot, infestation, fire, and discuss how careful detailing and sustainable sourcing are key to timber’s future. Whether in a Tudor beam or a glulam frame, timber remains one of the most versatile and enduring materials in building history.