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Joplin, MO · Jasper County

Mold Inspection Joplin, MO.

Closer Look Inspectors offers mold inspection and mold testing in Joplin, Jasper County, Missouri, through a local partner in our Missouri network.

Why moisture builds up in Joplin homes

Old mine shafts, some well over 100 feet deep, have occasionally caved in and created sinkholes.

Water nearby: Joplin Creek, Turkey Creek, Silver Creek and Shoal Creek drain the city.

Flood history: In 1916 a rainstorm of an estimated 6.9 to 7 inches flooded Joplin, washed out at least two large bridges, including one over Turkey Creek, and sent water through Main Street businesses.

Setting: The city sits on the outer edge of the Ozark Mountains, and the main part of Joplin is nearly 75 percent undermined by old mine workings.

Missouri summers are hot and humid. NOAA's 1991-2020 normals put average yearly precipitation at Springfield 44.7 inches, Poplar Bluff 50.8 inches. Warm, damp air is what lets mold take hold in attics, crawlspaces and bathrooms.

Housing age and hidden moisture in Joplin

Housing: The Murphysburg Historic District developed between about 1880 and 1965, with Queen Anne, Colonial Revival and Tudor Revival homes.

In pictures

Where moisture and mold hide.

Illustrative photos of the kinds of homes and conditions found in this area.

HVAC air handler with a rusty condensate pan, newer home
HVAC air handler with a rusty condensate pan, newer home
HVAC air handler with a rusty condensate pan, older home
HVAC air handler with a rusty condensate pan, older home
Sweating cold-water pipes in a crawlspace, newer home
Sweating cold-water pipes in a crawlspace, newer home
Sweating cold-water pipes in a crawlspace, older home
Sweating cold-water pipes in a crawlspace, older home
Water-stained drywall at the base of a wall, newer home
Water-stained drywall at the base of a wall, newer home
Water-stained drywall at the base of a wall, older home
Water-stained drywall at the base of a wall, older home
Questions

Common questions.

Did Joplin ever flood badly?
A 1916 storm dropped an estimated 6.9 to 7 inches of rain. At least two large bridges washed out, and Main Street businesses took floodwater.
Why is mold common in southern Missouri homes?
Southern Missouri has humid summers and about 45 to 50 inches of precipitation a year, based on NOAA normals for Springfield and West Plains. EPA advises keeping indoor humidity below 60 percent, ideally 30 to 50 percent. Basements, crawlspaces and bathrooms are where moisture tends to collect.
Why do crawlspaces and basements matter in Missouri houses?
EPA notes that crawl spaces with high humidity are common sites of hidden mold growth, especially over bare soil. Missouri summers are humid, so foundation moisture is a frequent buyer concern. EPA also advises grading the ground away from the foundation so it does not stay wet.
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