What are the pros and cons of pouring concrete in an existing crawl space, and how thick should it be?
I admit I am a bit of neat freak, but the idea of have a nice concrete floor in the crawl space appeals to me.
This is a spacious crawl space: 20×24 feet and nearly 6 feet tall. It houses the propane furnace and the electric water heater.
The walls I believe are concrete black. The floor is currently stone and dirt above a white plastic sheet which shows through in a few places. The crawl space opens to a smaller basement below it.
I believe the crawl space s currently vented to the outside (a couple of small, probably ineffective vents), and I am also considering sealing it.
If I do pour concrete (by “I” I mean a contractor not me personally), are there any considerations or drawbacks I should be aware of? Are 2″ sufficient for this application? Should I request a specific kind of concrete?
I am going for cleanliness, ability to use space for storage, making access to mechanicals easier, and possibly lowering Radon (which is already below the EPA action level).
There is no water or humidity poblem currently, either because of the plastic sheet or because the land gently slopes away from the crawl space.
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