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OC DSS -Hillsborough Commons Skylight Replacement Smith Sinnett / 2020054 <br />Hillsborough, NC Orange County <br /> <br />JOINT SEALANTS 07 92 00 - 5 <br />2.5 JOINT FILLERS FOR CONCRETE PAVING <br />A. General: Provide joint fillers of thickness and widths indicated. <br />B. Bituminous and Fiber Joint Filler: Provide resilient and non-extruding type premolded bituminous- <br />impregnated fiberboard units complying with ASTM D 1751; FS HH-F-341, Type I; or AASHTO M 213. <br />1. Where joints are to receive sealant, provide joint fillers with removable plastic top strips. <br />PART 3 - EXECUTION <br />3.1 EXAMINATION <br />A. Examine joints indicated to receive joint sealants, with Installer present, for compliance with <br />requirements for compliance with requirements for joint configuration, installation tolerances and other <br />conditions affecting joint sealer performance. Do not proceed with installation of joint sealants until <br />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 />recommendations of joint sealer manufacturers and the following requirements: <br />1. Remove all foreign material from joint substrates which could interfere with adhesion of joint <br />sealer, 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 repellants; water; surface dirt; and frost. <br />2. Clean concrete, masonry, unglazed surfaces of ceramic tile and similar porous joint substrate <br />surfaces, by brushing, grinding, blast cleaning, mechanical abrading, or a combination of these <br />methods to produce a clean, sound substrate capable of developing optimum bond with joint <br />sealants. Remove loose particles remaining from above cleaning operations by vacuuming or <br />blowing out joints with oil-free compressed air. <br />3. Remove laitance and form release agents from concrete. <br />4. Clean metal, glass, porcelain enamel, glazed surfaces of ceramic tile; and other nonporous surfaces <br />by chemical cleaners or other means which are not harmful to substrates or leave residues capable <br />of interfering with adhesion of joint sealants. <br />B. Joint Priming: Prime joint substrates where indicated or where recommended by joint sealer <br />manufacturer based on preconstruction joint sealer-substrate tests or prior experience. Apply primer to <br />comply with joint sealer manufacturer's recommendations. Confine primers to areas of joint sealer bond, <br />do not 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 />which 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 />A. General: Comply with joint sealant manufacturer's printed installation instructions applicable to <br />products and applications indicated, except where more stringent requirements apply. <br />B. Elastomeric Sealant Installation Standard: Comply with recommendations of ASTM C 962 for use of <br />joint sealants as applicable to materials, applications and conditions indicated. <br />C. Installation of Sealant Backings: Install sealant backings to comply with the following requirements: <br />1. Install joint fillers of type indicated to provide support of sealants during application and at <br />position required to produce the cross- sectional shapes and depths of installed sealants relative to <br />joint widths which allow optimum sealant movement capability. <br />DocuSign Envelope ID: 51195338-6F17-4D2B-B990-4A82329E7F4E