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ROOFING REPLACEMENT, RECOVER AND REPAIR PROJECT PAGE 4 <br />INDIAN RIVER COUNTY = JAIL COMPLEX SECTION 079200 <br />JANUARY 4, 2018 JOINT_SEALANTS <br />3.2 INSTALLATION <br />A., Sealant Installation Standard: Comply with recommendations in ASTM C 1193 <br />for use of joint sealants as applicable to materials, applications, and conditions <br />indicated. <br />B. Install sealant backings of kind indicated to support sealants during application <br />and at position required to produce cross-sectional shapes and depths of <br />installed sealants relative to joint widths that allow optimum sealant movement <br />capability. <br />1. Do not leave gaps between ends of sealant backings. <br />2. Do not stretch, twist, puncture, or tear sealant backings. <br />3. Remove absorbent sealant backings that have become wet before . <br />sealant application and replace them with dry materials. <br />C. Install bond -breaker tape behind sealants where sealant backings are not used <br />between sealants and backs of joints. <br />D. Install sealants using proven techniques that comply with the following and at <br />the same time backings are installed: <br />1. Place sealants so they directly contact and fully wet joint substrates. <br />2. Completely fill recesses in each joint configuration. <br />3. Produce uniform, cross-sectional shapes and depths relative to joint <br />widths that allow optimum sealant movement capability.. <br />E. Tooling of Nonsag Sealants: Immediately after sealant application and before <br />skinning or curing begins, tool sealants according to requirements specified in <br />subparagraphs below to form smooth, uniform beads of configuration indicated; <br />to eliminate air pockets; and to ensure contact and adhesion of sealant with <br />sides of joint. <br />1. Remove excess sealant from surfaces adjacent to joints. <br />2. Use tooling agents that are approved in writing by sealant manufacturer <br />. and that do not discolor sealants or adjacent surfaces. <br />3. Provide concave joint profile per Figure 8A in ASTM C 1193, unless <br />otherwise indicated. <br />F. Clean off excess sealant or sealant .smears adjacent to joints as the Work <br />progresses by methods and with cleaning materials approved in writing by <br />manufacturers of joint sealants and of products in which joints occur. <br />3.3 . FIELD QUALITY CONTROL <br />A. Field -Adhesion Testing: Field test joint -sealant adhesion to joint substrates as <br />follows: <br />Extent of Testing: Test completed and cured sealant joints as follows: <br />