Oddbean new post about login | logout @a5fc73e1 @WhiteBoyRooster @Matty-kun @GrungeQueef @:catnoears: Royper :gundam: there are two types of concrete concrete that has cracked and concrete that will crack i'd put in a radon mitigation fan to succ air out from under the slab. less than a thousand bucks probably. and it's a house, it probably has radon anyway.