Re: What type of pro for crawlspace isues?
You need to start by figuring out where the water is coming from and then you can choose a course of action to take. 99% of sub-area moisture is due to improper grade and downspout issues. If you can't regrade, then a perimeter drainage system will be in order, again, depending on where the water is coming from and how you can discharge the drain will determine the type of drainage system you install.
Encapsulation has never made sense to me because you aren't really encapsulating anything, all you're doing is stretching plastic everywhere that is perforated with seams and holes around footings as well as no perimeter seal. All this does is put a layer of plastic on the ground, without it being sealed, there is no encapsulation and no stoppage of moisture into the area. Worse still, you still have the problem of the water gathering under the house, which will eventually affect footings and foundations.
Determine the cause of the water and correct those issues, do not "bandaid" them.
I suffer from CDO ... Its like OCD, but in alphabetical order, LIKE IT SHOULD BE!!!