Builder I sub elec. from asked me to leave enough hose to reach up to roof (opposed to soffit, the usual) in one house because the $$ was FHA or FANNIE MAY , or something like that; in another house I ran 3'' from 1st fl. powder rm. out over/into soffited porch, which 3rd. party insp. passed but I'm waiting to see what township insp. has to say.Can't imagine any real moisture fr. powder rm.,but again we'll see.