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Orange County Health Department Improvements Smith Sinnett / 2024008 <br />Hillsborough, NC Orange County Asset Management Services <br />JOINT SEALANTS 07 92 00 - 6 <br />a. Do not leave gaps between ends of joint fillers. Bond ends of gaskets together with adhesive of <br />"weld" by other means as recommended by manufacturer to ensure continuous watertight and airtight <br />performance. Miter-cut and bond ends at corners unless molded corner units are provided. <br />b. Do not stretch, twist, puncture, or tear joint fillers. <br />c. Remove absorbent joint fillers which have become wet prior to sealant application and replace with <br />dry material. <br />2. Install bond breaker tape between sealants and joint fillers, compression seals, or back of joints where <br />adhesion of sealant to surfaces at back of joints would result in sealant failure. <br />3. Install compressible seals serving as sealant backings to comply with requirements indicated above for joint <br />fillers. <br />D.Installation of Sealants: Install sealants by techniques, that result in sealants directly contacting and fully wetting <br />joint substrates, completely filling recesses provided for each joint configuration, and providing uniform cross- <br />sectional shapes and depths relative to joint widths which allow optimum sealant movement capability. <br />1. For sidewalks, pavements and similar joints sealed with elastomeric sealants and subject to traffic and other <br />abrasion and indentation exposures, fill joints to a depth equal to 75% of joint width, but neither more than <br />5/8" deep nor less than 3/8" deep. <br />2. For normal moving joints sealed with elastomeric sealants but not subject to traffic, fill joints to a depth equal <br />to 50% of joint width, but neither more than ‰" deep nor less than 1/4" deep. <br />3. Install fire-rated sealants or sealants used in fire-rated joints or assemblies in a accordance with manufacturer’s <br />recommendations and as acceptable to Code authorities to achieve the required rating. <br />E. Tooling of Non-sag Sealants: Immediately after sealant application and prior to time skinning or curing begins, tool <br />sealants to form smooth, uniform beads of configuration indicated, to eliminate air pockets, and to ensure contact and <br />adhesion of sealant with sides of joint. Remove excess sealants from surfaces adjacent to joint. Do not use tooling <br />agents which discolor sealants or adjacent surfaces or are not approved by sealant manufacturer. <br />1. Provide concave joint configurations per Figure 6A in ASTM C 962, unless otherwise indicated. <br />3.4 CLEANING <br />A. Clean off excess sealants or sealant smears adjacent to joints as work progresses by methods and with cleaning <br />materials approved by manufacturers of joint sealants and of products in which joints occur. <br />3.5 PROTECTION <br />A. Protect joint sealants during and after curing period from contact with contaminating substances or from damage <br />resulting from construction operations or other causes so that they are without deterioration or damage at time of Final <br />Acceptance. If, despite such protection, damage or deterioration occurs, cut out and remove damaged or deteriorated <br />joint sealants immediately and reseal joints with new materials to produce joint sealer installations with repaired areas <br />indistinguishable from original work. <br />END OF SECTION 07 92 00 <br />Docusign Envelope ID: 186E0FF8-664C-4A5C-9F97-28196CE69FD1