| Class | Description |
|---|---|
| Class 1 | Very sensitive -- organic, porous materials (highest mold risk) |
| Class 2 | Sensitive -- wood-based engineered products |
| Class 3 | Medium resistant -- mineral/inorganic materials |
| Class 4 | Resistant -- non-porous, non-organic materials (lowest risk) |
| Material | Key | Class | Critical RH | Growth Rate |
|---|---|---|---|---|
| Paper-faced drywall | drywall |
Class 1 | 80% | 1.00 |
| Pine sapwood | pine |
Class 1 | 80% | 1.00 |
| Paper/cardboard | paper |
Class 1 | 75% | 1.20 |
| Carpet backing | carpet |
Class 1 | 80% | 1.00 |
| Plywood | plywood |
Class 2 | 85% | 0.70 |
| Particleboard | particleboard |
Class 2 | 82% | 0.80 |
| Hardwood | hardwood |
Class 2 | 85% | 0.60 |
| Oriented strand board | osb |
Class 2 | 85% | 0.70 |
| Concrete | concrete |
Class 3 | 90% | 0.30 |
| Brick/masonry | brick |
Class 3 | 90% | 0.30 |
| Glass wool insulation | glass_wool |
Class 3 | 90% | 0.20 |
| Cellulose insulation | cellulose_insulation |
Class 3 | 85% | 0.50 |
| Glass | glass |
Class 4 | 97% | 0.05 |
| Metal | metal |
Class 4 | 97% | 0.05 |
| PVC/vinyl | pvc |
Class 4 | 95% | 0.10 |
| Ceramic tile | tile |
Class 4 | 95% | 0.10 |
JSON: GET /api/v1/mold/materials?format=json