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Orange County Facility Renovations <br />Hillsborough, NC <br />Smith Sinnett JOINT SEALANTS <br />2020046/2020047/2020048/2020049/2020055 07 92 00 - 4 <br />h. Spectrum 2; Tremco Inc. <br /> <br /> <br />2.3 JOINT SEALANT BACKING <br /> <br />A. General: Provide sealant backings of material and type which are non-staining; are compatible with <br />joint substrates, sealants, primers and other joint fillers; and are approved for applications indicated by <br />sealant manufacturer based on field experience and laboratory testing. <br />B. Sealant Backer Rod: Provide compressible rod stock of polyethylene foam, polyurethane foam, <br />polyethylene jacketed polyurethane foam, butyl rubber foam, neoprene foam or other flexible, <br />permanent, durable non-absorptive material as recommended by sealant manufacturer for back-up of <br />and compatibility with sealant. Where used with hot-applied sealant, provide heat -resistant type which <br />will not be deteriorated by sealant application temperature as indicated. <br />C. Bond Breaker Tape: Provide polyethylene tape or other plastic tape as recommended by sealant <br />manufacturer, to be applied to sealant-contact surfaces where bond to substrate or joint filler must be <br />avoided for proper performance of sealant. Provide self-adhesive tape where applicable. <br /> <br />2.4 MISCELLANEOUS MATERIALS <br /> <br />A. Joint Primer/Sealer: Provide type of joint primer/sealer recommended by sealant manufacturer for joint <br />surfaces to be primed or sealed. <br />B. Cleaners for Nonporous Surfaces: Provide non-staining, chemical cleaners of type which are <br />acceptable to manufacturers of sealants and sealant backing materials, which are not harmful to <br />substrates and adjacent nonporous materials, and which do not leave oily residues or otherwise have a <br />detrimental effect on sealant adhesion or in-service performance. <br />C. Masking Tape: Provide non-staining, nonabsorbent type compatible with joint sealants and to surfaces <br />adjacent to joints. <br /> <br />2.5 JOINT FILLERS FOR CONCRETE PAVING <br /> <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 <br />213. <br />1. Where joints are to receive sealant, provide joint fillers with removable plastic top strips. <br /> <br />PART 3 - EXECUTION <br /> <br />3.1 EXAMINATION <br /> <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 <br />other conditions affecting joint sealer performance. Do not proceed with installation of joint sealants <br />until unsatisfactory conditions have been corrected. <br /> <br />3.2 PREPARATION <br /> <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 />DocuSign Envelope ID: 09980A3B-0691-41B4-854D-3865F2287392