Six Days of Logged Drying in a Laundry Room and Bath
- When:
- Spring 2026
- Loss:
- Flood affecting a laundry room and adjacent bath
- IICRC:
- Category 2, Class 3
A flood in a Heber City home affected a laundry room and the bath next to it. Flooring came up to expose the subfloor and framing underneath, and from that point the job was mostly a measurement problem.
A floor can feel completely dry underfoot while the sill plates beneath it are still holding water. The surface gives up moisture first and wood in contact with a slab gives it up last, so touch tells you nothing useful about what is happening two inches down. Sill plates and subfloor were read against their own dry standards every day for six consecutive days.
The log also captured room conditions and, less commonly, readings taken at the dehumidifier's own intake and discharge. That pair is worth understanding. A dehumidifier can be plugged in, running, and accomplishing very little; comparing the moisture in the air entering the machine against the air leaving it yields grain depression, which is direct evidence it is still removing water rather than simply moving it around. Those numbers were recorded daily here alongside the structural readings.
What the work involved
- Extraction and removal of affected flooring materials to expose subfloor and framing
- Four separate sill plate locations plus the subfloor set up as individually tracked monitoring points
- LGR dehumidification with daily atmospheric logging — room temperature, relative humidity, GPP, dew point, and vapor pressure
- Dehumidifier intake and discharge readings taken daily to verify the equipment was performing
- Six consecutive days of documented monitoring
- Sill plate readings
- 87–100% → 6.9%–12.8%
- Subfloor
- 81% → 10.6% (14% dry standard)
- Dehumidifier grain depression
- held above 12 GPP throughout
Result
Every monitored structural component dried below its established dry standard over six days of logged readings.
Services used on this job: Water Damage Restoration, Flood Damage Repair