Should I put gravel on a crawl space floor for drainage?
Should I put pea gravel or equivalent on the crawl space floor to allow moisture drainage? Before putting the moisture barrier down. Thank u
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A lot of crawl space floors will have gravel on them, but the intent is not really drainage, its just as a surface to walk on that is easily leveled I would suggest. Gravel for drainage is used around the exterior of foudations to allow solid structure but to allow water to drain. The main durability and functional aspect of a crawl space floor that you need is to prevent ground moisture from rising. This page explains it well -
How to insulate and water proof a crawl space foundation floor
Whatever your floor currently is, I'm assuming maybe dirt, most important is that it has a waterproof membrane such as a poly vapor barrier. Without that moisture from the ground will continuously rise into the space and risk causing mold and mildew.