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Moisture level on wall framing
Posted on 6/3/21 at 4:16 pm
Posted on 6/3/21 at 4:16 pm
Drying my daughters house out after the flood. What should my meter go to, before putting insulation and drywall back. The internet search told me 6 to 9 %. That seems really low for Baton Rouge area.
Posted on 6/3/21 at 4:31 pm to shawtiger
You might get it with a butt load of dehumidifiers, but it will go up after they are removed. I think I remember something like 12% from the 2016 floods.
In all honesty go to Lowe’s or Home Depot and put your moisture meter on a few of the wall studs they have for sale. Id guess that would be the lowest you could expect in our climate.
In all honesty go to Lowe’s or Home Depot and put your moisture meter on a few of the wall studs they have for sale. Id guess that would be the lowest you could expect in our climate.
Posted on 6/3/21 at 4:40 pm to shawtiger
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.”
“ 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.”
Posted on 6/3/21 at 5:10 pm to CrawDude
I didn’t realize it was that high. Makes sense though with our sky high humidity levels.
Posted on 6/3/21 at 5:24 pm to shawtiger
In Youngsville in 2016, you could line up inspectors through the city free of charge who would do an open wall inspection and write a certificate stating you were good to cover your studs if they were below 20% moisture. It came in handy when we went to sell because our buyer wanted that since we disclosed it flooded. I suggest giving your local city or parish hall a call to see if they are providing that service.
Posted on 6/3/21 at 11:15 pm to shawtiger
You need to establish the dry standard in order to know your target moisture content. The dry standard will vary from house to house, and what you see online or on the package of the moisture meter are general guidelines.
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