What structural drying actually means
Structural drying is drying the building, not just the surfaces. After a water loss, water soaks into drywall, the bottom plates of walls, subfloor, hardwood, concrete and block. The surface can feel dry in a day while the material underneath stays wet enough to support microbial growth and warp floors. IICRC S500, the industry drying standard, sets out how to classify a loss, how much equipment it needs and how to prove the building is dry.
- Category 1, 2 and 3 water are handled differently
- Class 1 through 4 sets how much equipment a room needs
- Air movers set to the room's evaporation load
- LGR dehumidifiers for most losses, desiccants for Class 4 materials
How the drying team runs a job
The tech who does the walkthrough maps moisture before any equipment goes down, using thermal imaging to find wet areas and pinless and pin meters to measure them. A dry reference, a matching material in an unaffected part of the house, sets the goal. The drying team places air movers along wet walls and floors, pairs them with dehumidifiers sized to the air volume, and injects air into wall cavities and under cabinets where needed. Hardwood gets floor drying mats. Readings go into the drying log every day, and equipment moves as areas dry.
The finish line is a number, not a date: the wet material within 2 to 4 points of the dry reference. Equipment stays until the readings say dry.
Why Stone Mountain homes dry differently
Humid Georgia summers make dehumidification the key to the whole job; opening windows usually adds moisture instead of removing it. Crawl spaces over red clay and cool daylight basements slow evaporation, and 1970s and 1980s homes often have hardwood under carpet that needs its own drying. EPA indoor air quality guidance explains why wet materials should be dried within 24 to 48 hours, and UGA Extension covers humidity control in Georgia homes. See crawl space water removal and water extraction for the steps that come first.