🏗️Intermediate
Waterproofing and Roofing
Thatch, clay tiles, and wood shingles. Making roofs that last decades.
Roofs fail first in many self-built structures; waterproofing quality determines building lifespan and health outcomes.
Key Concepts
- —Roof pitch must match rainfall intensity and roofing material.
- —Layering shed surfaces with drainage planes prevents trapped moisture.
- —Flashing details at joints and penetrations are common failure points.
- —Maintenance intervals should be planned from day one.
Practical Guide
- 1.Choose roofing system compatible with local material supply and skills.
- 2.Maintain continuous drainage path from ridge to eave.
- 3.Install drip edges and gutters to protect walls and foundations.
- 4.Inspect after major storms and replace damaged elements immediately.
- 5.Keep roof vegetation and debris cleared to reduce moisture retention.
References
- [1] Ching, F. D. K. (2014). Building construction illustrated (5th ed.). Wiley.
- [2] Minke, G. (2006). Building with earth. Birkhauser.