Start with conditions, not a product
Visible growth is only part of the problem. A durable plan addresses water entry, humidity, material condition, containment, and post-work verification.
Build a complete scope
- Existing conditions and likely cause
- Preparation and protection
- Materials, compatibility, and installation details
- Permits, testing, cleanup, and restoration
- Exclusions, warranty terms, and change-order process
Sterling Heights context
Crawl spaces built during Sterling Heights' 1950s-70s subdivision boom typically used ventilation standards common to that era, which modern building science treats differently -- worth reviewing alongside any active moisture problem.