| Value | Category |
|---|---|
| 1 | 1. Bricks |
| 2 | 2. Cement block/concrete |
| 3 | 3. Corrugated iron/zinc |
| 4 | 4. Wood |
| 5 | 5. Plastic |
| 6 | 6. Cardboard |
| 7 | 7. Mud and cement mix |
| 8 | 8. Wattle and daub |
| 9 | 9. Mud |
| 10 | 10. Thatching/grass |
| 11 | 11. Asbestos |
| 12 | 12. Other wall material |
| 99 | 99. Unspecified |