Osteolumberosis Classification System

A coined observational term by Chattanooga Mastercraft Contractors.

Grade I – Early Osteolumberosis

• Minor settling
• Isolated moisture damage
• Localized wood deterioration
• Repairable without major reconstruction

Grade II – Progressive Osteolumberosis

• Multiple weakened joists
• Failing sill plates
• Foundation movement
• Structural reinforcement recommended

Grade III – Advanced Osteolumberosis

• Extensive rot
• Collapsed or severely compromised framing
• Significant foundation failure
• Major structural reconstruction required

Grade IV – Terminal Osteolumberosis

• The home’s structural system has largely failed.
• Cosmetic remodeling is no longer an option.
• The house needs a comprehensive structural renewal before any finish work begins.