Scope: 1. Exterior Joints: Seal open joints, whether or not the joint is indicated on drawings, unless specifically indicated not to be sealed. Exterior joints to be sealed include, but are not limited to, the following items. a. Wall expansion and control joints. b. Joints between door, window, and other frames and adjacent construction. c. Joints between different exposed materials. d. Openings below ledge angles in masonry. e. Other joints indicated below. 2. Interior Joints: Do not seal interior joints unless specifically indicated to be sealed. Interior joints to be sealed include, but are not limited to, the following items. a. Joints between door, window, and other frames and adjacent construction. b. In sound-rated wall and ceiling assemblies, gaps at electrical outlets, wiring devices, piping, and other openings; between wall/ceiling and other construction; and other flanking sound paths. 1) Exception: Through-penetrations in sound-rated assemblies that are also firerated assemblies. c. Other joints indicated below. 3. Do Not Seal: a. Intentional weep holes in masonry. b. Joints indicated to be covered with expansion joint cover assemblies. c. Joints where sealant installation is specified in other sections. d. Joints between suspended ceilings and walls. B. Exterior Joints: Use non-sag non-staining silicone sealant, unless otherwise indicated. 1. Lap Joints in Sheet Metal Fabrications: Butyl rubber, non-curing. a. Thresholds. b. Sheet metal flashings and trim joints, including scuppers and gutters. 2. Control and Expansion Joints in Concrete Paving: Self-leveling polyurethane "trafficgrade" sealant. C. Interior Wet Areas: Bathrooms, restrooms, and kitchens; fixtures in wet areas include plumbing fixtures, food service equipment, countertops, cabinets, and other similar items. D. Sound-Rated Assemblies: Walls and ceilings identified as STC-rated, sound-rated, or acoustical.
