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| Apron Flashing | A flashing located at the low end of a curb or penetration. |
| Base Flashing | (membrane base flashing): Plies of roof membrane material used to seal a roof at the vertical plane intersections, such as at a roof-wall and roof-curb junctures. (See also Flashing.) |
| Cap Flashing | A material used to cover the top edge of base flashings or other flashings. (See also Coping) |
| Channel Flashing | Flashing with a built-in channel for runoff; used where roof planes intersect other vertical planes. |
| Counterflashing | Formed metal sheeting secured to walls, curbs, or other surfaces, for use in protecting the top edge of base flashings from exposure to weather. |
| Flashing | Components used to seal the roof system at areas where the roof covering is interrupted or terminated. For example, pipes, curbs, walls, etc. all have special components that, when correctly installed, will help prevent moisture entry into the roof system or building. |
| Flashing Cement | A trowelable mixture of solvent-based bitumen and mineral stabilizers. Flashing cement that may contain asbestos stabilizers is categorized by ASTM standard D 2822-91 (1997) or for non-asbestos, ASTM standard D 4586-93. Flashing Cement is the term for Asphalt Roof Cement that can be used on vertical surfaces and has a high softening point, low ductility and conforms to the requirement of ASTM Specification D 312, Types II or III; or Specification D 449, Type III. See also Asphalt Roof Cement and Plastic Cement. |
| Flashing Collar | A flashing component used to seal soil pipe vents, hot stacks or other roof penetrations. |
| Metal Flashing | Roof components made from sheet metal that are used to terminate the roofing membrane or material along roof edges. Metal flashings are also used in the field of the roof around penetrations. |
| Pan Flashing | A sheet metal flashing that covers an equipment platform and is designed to counter flash the base flashings surrounding the platform. |
| Sill Flashing | Flashing material(s) used to waterproof the bottom framing member of a door or window opening. |
| Step Flashing | Pieces of metal or other material that are used to flash roof projections such as chimneys, walls, curbs, etc. The pieces are installed between each course of roofing and generally have a vertical flange equal in length to that of the horizontal flange. |
| Strip Flashing | Pieces of membrane material that are used to flash metal flashing flanges such as gravel stop. Also referred to as Stripping. |
| Through-Wall Flashing | A material that extends through a wall and is used to direct water entering a wall cavity to the exterior of the structure. |