Watertight structures and methods of making the same

A structure comprising an interior and an exterior, selected from the group consisting of recreational vehicle, utility vehicle, trailer, bus, walk-in van, box truck, rail car, ambulance, boat, and shed comprising:

• a. a single-sided thermoplastic film tape comprises a backing having a first and second side, and a thermoplastic sealant applied in a film to one of the first and the second sides,
• b. a multi-sided thermoplastic tape comprising a double-sided thermoplastic film tape, and
• c. a substrate encapsulated tape comprising a foam substrate encapsulated by a sealant comprising no greater than 60% by weight filler,
• wherein a., b., and c., make up greater than 50% by weight of the sealant used to seal the exterior of the structure.

A method of sealing a structure comprising an interior and an exterior, the method comprising:

• a. positioning a single-sided thermoplastic film tape such that it overlaps a roof to wall joint,
• b. positioning a multi-sided thermoplastic tape to seal and adhere one or more items selected from the group consisting of front cap, end cap, electrical outlet plate, vent, skylight, non-flanged items, and combinations thereof to the exterior of the structure, and
• c. positioning a substrate encapsulated tape on the exterior structure facing side of a flange of a component inserted into a cut out, the component selected from the group consisting of a window and a door,
• wherein the structure is selected from the group consisting of a recreational vehicle and a trailer, and wherein the single-sided thermoplastic film tape, the multi-sided thermoplastic tape and the substrate encapsulated tape make up greater than 50% by weight of the sealant used to seal the exterior of the structure.