Plastic necessary on supporting pillows in a crawl space?
I’m in SC and installing a moisture barrier under my house in the crawl space. Is it necessary to put plastic up supporting pillows in order to reduce the moisture rating under my house, or is simply covering the soil sufficient? ( There is no standing water or flood issues) so not sure why or if it is necessary to go up pillows with my plastic barrier.
Any explanation or thoughts will be appreciated.