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C. Masking Tape: Nonstaining, nonabsorbent material compatible with joint sealants and surfaces adjacent <br />to joints. <br />PART 3 - EXECUTION <br />z <br />3.1 EXAMINATION <br />A. Examine joints indicated to receive joint sealants, with Installer present, for compliance with <br />requirements for joint configuration, installation tolerances, and other conditions affecting joint -sealant <br />performance. <br />B. Proceed with installation only after unsatisfactory conditions have been corrected. <br />3.2 PREPARATION <br />A. Surface Cleaning of Joints: Clean out joints immediately before installing joint sealants to comply with <br />joint -sealant manufacturer's written instructions and the following requirements: <br />1. Remove all foreign material from joint substrates that could interfere with adhesion of joint <br />sealant, including dust, paints (except for permanent, protective coatings tested and approved for <br />sealant adhesion and compatibility by sealant manufacturer), old joint sealants, oil, grease, <br />waterproofing, water repellents, water, surface dirt, and frost. <br />2. Clean porous joint substrate surfaces by brushing, grinding, blast cleaning, mechanical abrading, <br />or a combination of these methods to produce a clean, sound substrate capable of developing <br />optimum bond with joint sealants. Remove loose particles remaining after cleaning operations <br />above by vacuuming or blowing out joints with oil -free compressed air. Porous joint substrates <br />include the following: <br />a. Concrete. <br />b. Masonry. <br />3. Remove laitance and form -release agents from concrete. <br />4. Clean nonporous surfaces with chemical cleaners -or other means that do not stain, harm substrates, <br />or leave residues capable of interfering with adhesion of joint sealants. Nonporous joint substrates <br />include the following: <br />a. Metal. <br />b. Porcelain enamel. <br />C. Glazed surfaces of ceramic tile. <br />B. Joint Priming: Prime joint substrates, where recommended in writing by joint -sealant manufacturer, <br />based on preconstruction joint -sealant -substrate tests or prior experience. Apply primer to comply with <br />joint -sealant manufacturer's written instructions. Confine primers to areas of joint -sealant bond; do not <br />allow spillage or migration onto adjoining surfaces. <br />C. Masking Tape: Use masking tape where required to prevent contact of sealant with adjoining surfaces <br />that otherwise would be permanently stained or damaged by such contact or by cleaning methods <br />required to remove sealant smears. Remove tape immediately after tooling without disturbing joint seal. <br />3.3 INSTALLATION OF JOINT SEALANTS <br />Wabasso Beach Park <br />Indian River County <br />DAA Project No. 6008 <br />07920-5 <br />