Practical Action.org: Micro-concrete Roofing Tile Production
“Much attention has been paid to developing the small-scale production of concrete roofing tiles as an affordable alternative to both traditional roofing materials, such as thatch, and modern, mass-produced, often inappropriate, galvanized iron sheeting or asbestos cement. These tiles are relatively low in cost, durable (with a life span expected to exceed 20 years in most areas), aesthetically acceptable, able to offer adequate security and comfort, and provide protection from both the heavy rain and the hot sun.
