As homeowners learn more about the real damage mold can cause to their health and home, their concerns are rapidly rising. They’re beginning to realize that their energy-efficient, "tight" homes built since the '70s energy crisis can actually be havens for destructive mold, thanks to poor circulation and "mold-friendly" materials like conventional drywall and particleboard. They’re also discovering that many insurance companies are no longer covering mold-related damages. This puts the burden on the homeowner to prevent mold before it causes serious and expensive problems.