A. General: Install penetration firestopping to comply with manufacturer's written installation instructions and published drawings for products and applications indicated. B. Install forming materials and other accessories of types required to support fill materials during their application and in the position needed to produce cross-sectional shapes and depths required to achieve fire ratings indicated. 1. After installing fill materials and allowing them to fully cure, remove combustible forming materials and other accessories not indicated as permanent components of firestopping. C. Install fill materials for firestopping by proven techniques to produce the following results: 1. Fill voids and cavities formed by openings, forming materials, accessories, and penetrating items as required to achieve fire-resistance ratings indicated. 2. Apply materials so they contact and adhere to substrates formed by openings and penetrating items. 3. For fill materials that will remain exposed after completing the Work, finish to produce smooth, uniform surfaces that are flush with adjoining finishes...
