Mark K
Elite Member
- Joined
- Jan 27, 2004
- Professional Status
- Certified Residential Appraiser
- State
- Indiana
No. Sump pumps are for water, not for excess humidity/moisture. Dehumidifiers generally drain into the sump pump pit or floor drain if available.Sump pump might be an answer
Crawls are below grade where its cooler in the summer. Hot, moist air comes in thru the crawl vents and it condenses on the colder materials, metal and concrete, especially metal ductwork carrying cold air from the AC. The condensation is very similar to a cold beer can outside on a hot, humid day. The excess moisture can eventually cause wood rot in the sill plates and floor joists, a problem seen frequently in this area when excess moisture is left unattended. I can often tell by the smell when I walk into a home if there's a problem in the crawl; I don't need to see the crawl.
Moisture also wicks its way up from the soil, hence the gravel bed and plastic sheeting on the floor of the crawl to help keep out that moisture.
For these reasons, most new homes are being built on concrete slabs vs. crawl spaces these days...plus crawl spaces are more expensive than slabs.
