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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 - 6 <br />a. Do not leave gaps between ends of joint fillers. Bond ends of gaskets together with <br />adhesive of "weld" by other means as recommended by manufacturer to ensure continuous <br />watertight and airtight performance. Miter-cut and bond ends at corners unless molded <br />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 <br />replace with dry material. <br />2. Install bond breaker tape between sealants and joint fillers, compression seals, or back of joints <br />where 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 <br />above for joint fillers. <br />D. Installation of Sealants: Install sealants by techniques, that result in sealants directly contacting and <br />fully wetting joint substrates, completely filling recesses provided for each joint configuration, and <br />providing uniform cross-sectional shapes and depths relative to joint widths which allow optimum sealant <br />movement capability. <br />1. For sidewalks, pavements and similar joints sealed with elastomeric sealants and subject to traffic <br />and other abrasion and indentation exposures, fill joints to a depth equal to 75% of joint width, but <br />neither more than 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 <br />depth equal to 50% of joint width, but neither more than ½" 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 <br />manufacturer's recommendations and as acceptable to Code authorities to achieve the required <br />rating. <br />E. Tooling of Non-sag Sealants: Immediately after sealant application and prior to time skinning or curing <br />begins, tool sealants to form smooth, uniform beads of configuration indicated, to eliminate air pockets, <br />and to ensure contact and adhesion of sealant with sides of joint. Remove excess sealants from surfaces <br />adjacent to joint. Do not use tooling agents which discolor sealants or adjacent surfaces or are not <br />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 <br />cleaning 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 <br />damage resulting from construction operations or other causes so that they are without deterioration or <br />damage at time of Final Acceptance. If, despite such protection, damage or deterioration occurs, cut out <br />and remove damaged or deteriorated joint sealants immediately and reseal joints with new materials to <br />produce joint sealer installations with repaired areas indistinguishable from original work. <br /> <br />END OF SECTION 07 92 00 <br />DocuSign Envelope ID: 51195338-6F17-4D2B-B990-4A82329E7F4E