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1. <br />standard range of available colors by the Architect/Engineer. <br />2. In concealed installations, and in partially or fully exposed installation <br />where so approved by the Architect/Engineer, use standard gray or black <br />sealant. <br /> <br />2.9 MISCELLANEOUS MATERIALS <br /> <br />A. Primers: Use primes determined to be required by substrate testing for each <br />particular installation. Primers used to be non-staining and shall be suitable for <br />the installation and the substrate. <br /> <br />B. Cleaners: As recommended by the sealant manufacturer, not damaging to the <br />substrate. <br /> <br />C. Masking Tape: Non-absorbent and non-staining type. <br /> <br />D. Tooling Agents: Approved by the sealant manufacturer; non-staining to the <br />sealant or the substrate. <br /> <br />E. Provide other materials, not specifically described but required for a complete <br />and proper installation, as selected by the Contractor subject to the approval of <br />the Engineer. <br /> <br />PART 3- EXECUTION <br /> <br />3.1 SURFACE CONDITIONS <br /> <br />A. Examine the areas and conditions under which work of this Section will be <br />performed. Correct conditions detrimental to timely and proper completion of the <br />work. Do not proceed until unsatisfactory conditions are corrected. <br /> <br />3.2 PREPARATION <br /> <br />A. Cleaning: Prior to the start of the sealer installation, clean out joints n accord <br />with the recommendation of the sealer manufacturer and as follows: <br />1. Remove all material that could impair adhesion, including dirt, dust, <br />coatings, paint, oil and grease. Exception: Materials tested to show <br />acceptable adhesion and compatibility. <br />2. Dry out damp and wet substrates thoroughly. <br />3. Clean M-type and O-type substrates by suitable mechanical or chemical <br />methods. <br />4. Remove loose particles by vacuuming or by blowing with oil-free <br />compress air. <br /> <br />B. Steel surfaces: <br />1. Steel surfaces in contact with sealant: <br />a. Sandblast as required to achieve acceptable surface for bond. <br />b. If sandblasting is not practical, or would damage adjacent finish, <br />scrape the metal or wire brush to remove mill scale. <br /> <br />SEALANTS AND CAULKING <br />07920-5 <br /> <br />