Feature | Spray Foam | Fiberglass/Cellulose | |
|---|---|---|---|
1 | Air Sealing | Creates a 100% airtight seal. | Allows air to pass through. |
2 | Moisture Resistance | Repels water and prevents mold. | Can hold moisture and sag. |
3 | Lifespan | Permanent (50+ years). | Degrades/settles over time. |
4 | Pest Deterrent | No nesting or food value. | Common nesting material. |

