Abstract: A metal trim attaching assembly secures an element, such as a molding strip, upon a supporting surface. The assembly includes an isolator that has a substantially flexible mounting plate with a mounting surface yieldable to conform generally to the contour of the supporting surface. Retaining flanges are formed integral with the mounting plate. The retaining flanges are grippable by the element to hold the element into a structural relationship with the mounting plate. Supporting flanges, also formed integral with the yieldable toward the mounting plate, provide supportable leverage for the element in cooperation with the retaining flanges. Double sided adhesive tape secures the mounting surface to the supporting surface. A method involves steps of stripping protective backing from the tape and securing it, with the isolator and trim, to the supporting surface.