I am installing a laminate hardwood floor. When I hung my drywall I left a half inch gap off the concrete to allow my flooring room to go under the drywall to cover. My question is, how do I allow for the appropriate gap between my laminate and the wall when it will be under the drywall. I won't be able to get a spacer in the crack? Do I need to leave a gap? Can I try to just let the flooring slide under the drywall with no spacer and try to keep it slightly off the wall? I'm just not sure how to get the appropriate space.