I use adhesive for roof skin installations and just weld the sails and A-pillar corners. Clamp and it's done. No welding in the drips and it's use retains their factory STRSW appearance. When used properly and in the right application, adhesives offer advantages over plug welding. Some like to plug weld the front and rear and use adhesive only in the drips but adhesive is very strong and those seams will not be separated with adhesive's use. Deadening products and extent of installation are customer's choice.