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B. Special Manufacturer's Warranty: Manufacturer agrees to furnish joint sealants to repair or <br /> replace those joint sealants that do not comply with performance and other requirements <br /> specified in this Section within specified warranty period. <br /> 1. Warranty Period: Twenty years from date of Substantial Completion. <br /> C. Special warranties specified in this article exclude deterioration or failure of joint sealants from <br /> the following: <br /> 1. Movement of the structure caused by stresses on the sealant exceeding sealant <br /> manufacturer's written specifications for sealant elongation and compression. <br /> 2. Disintegration of joint substrates from causes exceeding design specifications. <br /> 3. Mechanical damage caused by individuals, tools, or other outside agents. <br /> 4. Changes in sealant appearance caused by accumulation of dirt or other atmospheric <br /> contaminants. <br /> PART 2 - PRODUCTS <br /> 2.01 JOINT SEALANTS, GENERAL <br /> A. Compatibility: Provide joint sealants, backings, and other related materials that are compatible <br /> with one another and with joint substrates under conditions of service and application, as <br /> demonstrated by joint-sealant manufacturer, based on testing and field experience. <br /> B. Colors of Exposed Joint Sealants: As selected by Engineer(DRBA)from manufacturer's full <br /> range. <br /> 2.02 NON-STAINING JOINT SEALANTS <br /> A. Non-staining Joint Sealants: No staining of substrates when tested according to ASTM C 1248. <br /> B. Silicone, Non-staining, S, NS, 50, NT: Non-staining, single-component, non-sag, plus 50 <br /> percent and minus 50 percent movement capability, nontraffic-use, neutral-curing silicone joint <br /> sealant; ASTM C 920, Type S, Grade NS, Class 50, Use NT. <br /> 1. Color: Match adjacent finished surfaces. <br /> C. Polyurethane Sealant: ASTM C920, Grade NS, Uses M and A; single or multi-component; not <br /> expected to withstand continuous water immersion or traffic. <br /> 1. Color: Match adjacent finished surfaces. <br /> 2.03 JOINT-SEALANT BACKING <br /> A. Cylindrical Sealant Backings: ASTM C 1330, Type C (closed-cell material with a surface skin), <br /> Type O (open-cell material), or any of the preceding types, as approved in writing by joint- <br /> sealant manufacturer for joint application indicated, and of size and density to control sealant <br /> depth and otherwise contribute to producing optimum sealant performance. <br /> 2.04 MISCELLANEOUS MATERIALS <br /> A. Primer: Material recommended by joint-sealant manufacturer where required for adhesion of <br /> sealant to joint substrates indicated, as determined from preconstruction joint-sealant-substrate <br /> tests and field tests. <br /> B. Cleaners for Nonporous Surfaces: Chemical cleaners acceptable to manufacturers of sealants <br /> and sealant backing materials, free of oily residues or other substances capable of staining or <br /> harming joint substrates and adjacent nonporous surfaces in any way and formulated to <br /> promote optimum adhesion of sealants to joint substrates. <br /> C. Masking Tape: Non-staining, nonabsorbent material compatible with joint sealants and surfaces <br /> adjacent to joints. <br /> PART 3 - EXECUTION <br /> 3.01 EXAMINATION <br /> A. Examine joints indicated to receive joint sealants, with Installer present, for compliance with <br /> requirements for joint configuration, installation tolerances, and other conditions affecting <br /> performance of the Work. <br /> SEA00511 / Prologis - SEA00511 07 9200 - 2 JOINT SEALANTS <br /> - FY24- Everett 1 - Capital <br /> Roofing Project <br />