Materials
7 articles sit under materials. Each one covers a single fault, material or district in its own right.
- Breathable Membranes Under a Roof: What Replaced Bitumen FeltVapour-permeable sheet lets moisture escape the void while blocking wind-driven rain.
- Clay Against Concrete Tiles: Colour, Weight and DurabilityFired units hold their appearance while cast alternatives fade and gain mass over time.
- EPDM, Fibreglass or Felt: Choosing a Flat Roof Build-UpThree domestic systems ranked on durability, joint count, rigidity and price, including where each fails first — because detailing at edges causes more losses than the sheet itself.
- Minimum Roof Pitch by Covering Type: The Fixing LimitsEvery covering has an angle below which it stops shedding water reliably.
- Slate or Tile: Comparing Weight, Lifespan and Roof PitchNatural stone outlasts cast alternatives by decades but loads the structure differently and costs more per square metre.
- Warm Deck or Cold Deck: How Flat Roofs Handle InsulationPlacing the thermal layer above the structure keeps timber at internal temperature and removes the airflow requirement.
- Welsh Slate: Why Birmingham Terraces Were Built With ItQuarried stone splits thin, sheds water and resists frost for a century or more.