re: Moisture level on wall framing

From LSU AgCenter Website. LINK

“ 8. How do I know when it’s dry enough to restore?

You can’t tell by appearance or time spent drying. A reliable, professional-grade, calibrated moisture meter is recommended to measure the moisture content of flooded materials.

The newer recommended wood moisture content target is 15% or lower, because higher levels could possibly support mold growth. Take readings with a pin type meter at various locations in both the middle and edges of wood studs, bottom plates, wall sheathing and subflooring. Note that treated woods (bottom plates) can produce false readings on some meters.

Previous guidelines cited a 19% target because that’s the national dryness standard for framing lumber. Wood with higher moisture content is vulnerable to decay fungi, a structural risk.

Note that a flooded concrete slab soaks in water like a sponge. A wet slab can lead to flooring failure and rewetting of wood framing. To monitor slab wetness, use a pinless moisture sensor, if possible. Otherwise, as a rough DIY indicator, tape an 18 inch square piece of clear plastic sheeting on the concrete. Monitor for 24 hours, then if visible moisture collects under the plastic, the slab is still wet.

Also inspect for wood decay and termite damage, and repair or replace damaged and soft wood before proceeding.”