Products used in building and remodeling to reduce the need for nails, screws and other fastening devices. Considered "heavy-duty," these products have specific qualities, uses and methods of application. In general, they are: 1) Flexible, waterproof and weatherproof for outdoor use, 2) Formulated to join wood, plastic, concrete, masonry and metal in building applications, 3) Used in roofing, drywall, flooring, sub-flooring, plumbing, paneling, cove base, tile and wood, 4) Applied in beads from a tube and caulk gun or in layers with a trowel.