I've done some searching online and haven't found anything on methods for air sealing new construction. Does anyone have a tried and true method that seems to work well? I have recently tried two methods. One using luan plywood under ceiling joists and another using a membrain (certainteed) product. Both are taped and caulked. I haven't done blower door test yet on either, so I don't now how successful they will be. Anyone have another method out there? Or does anyone have areas that always seem to give them a load of trouble sealing? Thanks, Nick.