I am interested in having a home built with ICF. There is something called "V-Buck" that goes around window/door openings. I would like to know if there is something that needs to go over this V-Buck before drywalling to keep the drywall from getting wet and molding in case the V-Buck "sweats". Or does the V-Buck sweat after the home is completed? I would appreciate any information on this subject. Thank you.