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<br />THE CITY OF SUNNY ISLES BEACH <br />PROJECT NO. 21-1011 <br />BUILDING DEPARTMENT RELOCATION TO ANNEX <br />Project No. 21-1011 November 2024 079210 -5 <br />3. Clean concrete and similar porous joint surfaces by brushing, grinding, blast <br />cleaning, mechanical abrading, or a combination of these methods to produce a <br />clean, sound substrate capable of developing optimum bond with joint sealers. <br />Remove loose particles remaining from above operations by vacuuming or blowing <br />out joints with oil-free compressed air. <br /> <br />4. Remove laitance and form release agents from concrete. <br /> <br />5. Clean metal and other nonporous surfaces of chemical cleaners or other means <br />that are not harmful to substrates or leave residues capable of interfering with <br />adhesion of joint sealers. <br /> <br />B. Joint Priming: Prime joint substrates as required by joint sealant manufacturer. <br />Confine primers to areas of joint sealer bond; do not allow spillage or migration <br />onto adjoining surfaces. <br /> <br />C. Masking Tape: Use where required to prevent contact of sealant with adjoining <br />surfaces which would otherwise be permanently stained or damaged by such <br />contact or by cleaning methods required to remove sealant smears. Remove tape <br />immediately after tooling without disturbing joint seal. <br /> <br />3.2 APPLICATION: <br /> <br />A. Conform to sealant manufacturer's printed instructions except where more stringent <br />requirements apply. <br /> <br />1. For elastomeric sealant installation, comply with ASTM C962 for use of joint <br />sealants as applicable to materials, applications and conditions indicated. <br /> <br />B. Install joint filler units at depth or position in joint to coordinate with other work and <br />sealants. Do not leave voids or gaps between ends of joint fillers. Do not stretch, twist, <br />puncture or tear joint fillers. Remove absorbent joint fillers that have become wet prior to <br />sealant application and replace with dry materials. <br /> <br />C. Install sealants by proven application techniques that result in sealants directly contacting <br />and fully wetting joint substrates, completely filling recesses provided for each joint <br />configuration and providing uniform, cross sectional shapes and depths relative to joint <br />widths which allow optimum sealant movement capability. <br /> <br />D. Install sealants to depths as recommended by sealant manufacturer, within the following <br />limitations: <br /> <br />1. For normal moving joints sealed with elastomeric sealants, but not subject to <br />traffic, fill joints to a depth equal to 50 percent of joint width, but neither more <br />than 1/2-inch deep nor less than 1/4-inch deep. <br /> <br />E. Unless indicated otherwise, provide a slightly concave surface conforming to ASTM C962. <br /> <br />F. Do not allow sealants or compounds to overflow from confines of joint or spill onto <br />adjoining surfaces. Clean the adjoining surfaces to eliminate evidence of spillage, without <br />damage to adjoining surfaces or finishes.