This episode explores bitumen and asphalt, two essential materials used in roofing, damp-proofing, and tanking. We trace their geological origins, historical use in ancient and modern construction, and their roles in UK housing. We explain how they’re used in flat roofs, DPCs, and basements, highlight common defects, and look at modern alternatives and sustainability issues. A must-listen for surveyors seeking to better understand these often overlooked but critical waterproofing materials.

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.

In this episode, we explore the history, science, and modern applications of concrete, from ancient Roman innovations to today’s high-rise structures. We discuss the evolution of cement types, the role of reinforcement, common concrete components, and issues like carbonation. We also touch on futuristic possibilities for concrete beyond Earth, making this a comprehensive introduction for surveyors, engineers, and enthusiasts alike.