| Value | Category |
|---|---|
| -9 | NO RESPONSE |
| -7 | DON'T KNOW |
| 1 | CORRUGATED CARDBOARD, RUBBER, FABRIC, TIRES |
| 2 | CARDBOARD PANELS |
| 3 | PALM, SHINGLES OR WOOD |
| 4 | METALLIC PANELS, FIBERGLASS, PLASTIC OR MICA |
| 5 | ASBESTOS PANELS |
| 6 | REED, BAMBOO, OR TERRACE |
| 7 | TILES |
| 8 | CONCRETE SLAB OR SIMILAR |
| 9 | BRICK |
| 10 | BLOCK |