Every crawl space is different. Every scope is written after we've been in yours.
Assessment
🔍MC% Assessment & Contamination Mapping
MC readings at 10–12 ft intervals across the crawl space. Visible growth mapped and photographed. Written assessment with findings before scope proposal.
Removal
🔨HEPA Removal & Wire-Brush Treatment
Loose and surface mold growth on joists and sheathing is removed using industrial HEPA vacuuming and wire brushing — capturing spore material rather than disturbing it into the airspace. Contained removal prevents spore migration upward through the subfloor assembly into living areas.
Treatment
🌳Penetrating Borate Application
EPA-registered penetrating borate solution applied to all accessible joist and sheathing surfaces after HEPA removal. Borate diffuses into wood fiber over time, providing ongoing inhibition of fungal colonization — including species that may not be visually apparent yet. Borate remains active in treated wood for years.
Structure
🔨Sistering Structurally Compromised Joists
Joists with advanced fungal digestion — evidenced by delamination of sheathing, spongy or punky texture, or through-penetration of decay fungi — lose structural capacity and need sistering with pressure-treated lumber rather than treatment. We assess each joist individually and document replacement recommendations in the written scope.
Barrier
💧Vapor Barrier Repair or Replacement
Reinforced poly, correctly lapped, footing-secured. Proper vapor barrier installation is the #1 long-term prevention tool for crawl space mold in Cambridge, MN properties.
Systems
🏔Encapsulation vs. Vented Conditioning Assessment
Full crawl space encapsulation (sealed vapor barrier, insulated perimeter walls, conditioned air supply) is the right answer for some Cambridge, MN crawl spaces — particularly those with high water table, poor drainage, or chronic moisture loads that vented conditioning can't manage. We assess your specific conditions and recommend objectively, not by default toward the more expensive option.
