A what?

i am wondering if it is better to have a concete crawl space floor then it is to have just a graval base floor under a midular,thanks

I read in the Modular book that it is a waste of money to have a concrete slab under the modular, and that the pier crawspace is good

thanks for the help any more suggestions weather or not to do a crawl space with stone floor or make a concete floor.thanks again

The only home I had with a crawl space had gravel over dirt with heavy plastic sheeting to keep the moisture out or at least to a minimum. I believe a concrete floor for a crawl space is a waste of money. But if you're considering a concrete floor why not put up the extra courses of block or extra concrete and have a full basement? Even if the only access is from the outside you won't regret the extra space for storage.

thanka agin for the help,any other adive on this subject?