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8/06/2020 <br />07 92 00 JOINT SEALANTS Page 4 of 5 <br /> <br />A. Apply primer to joints in accordance with sealant manufacturer’s instructions. Tape joints to <br />protect surrounding materials Do not apply primer to exposed finished wall surfaces. Primer <br />application will be required whether or not required by the manufacturer. Primer use will only <br />be waived if specifically recommended against, in writing, by the manufacturer. Apply primer <br />in a thin, uniform film. Avoid build-up of film. <br /> <br />B. Allow primer drying time prior to applying sealant. Sealant must be applied same day as <br />primer. <br /> <br />C. Masking: Thoroughly and completely mask all joints where the appearance of primer or <br />sealant on adjacent surfaces would be objectionable. <br /> <br />D. Apply sealant under pressure with hand or power-actuated gun or other appropriate means. Guns <br />shall have nozzle of proper size and shall provide sufficient pressure to completely fill joints as <br />designed. <br /> <br />E. Install the sealant in strict accordance with the manufacturer's recommendations as approved by <br />the Designer, thoroughly filling all joints to the recommended depth. <br /> <br />F. Air voids shall not be present throughout the entire joint cross section. To ensure complete joint <br />fill, tooling shall be performed within ten minutes of sealant application. Sealant shall be tooled <br />with light pressure to spread the material against the joint surface and provide a profile to match. <br /> <br />G. Sealant shall be dry tooled unless specifically approved otherwise by the manufacturer and the <br />Designer. If the sealant manufacturer approves, the tool may be dampened with a sealant <br />manufacturer approved reducer. Water or soapy water shall not be used on the tool. <br /> <br />3.3 FIELD QUALITY CONTROL <br /> <br />A. The installer shall perform adhesion/cohesion testing on sample sealant joint locations once cured <br />to ensure that cleaning, priming, and sealant installation was performed adequately. <br />Adhesion/cohesion testing should be performed in the presence of the Designer or Owner’s <br />representative. <br /> <br />3.4 CLEANING UP <br /> <br />A. Remove masking tape immediately after joints have been tooled. <br /> <br />B. Keep adjacent surfaces clean and free from sealant as the installation progresses. Use solvent or <br />cleaning agent as recommended by the sealant manufacturer. <br /> <br />C. Do not allow uncured sealants to contact surfaces adjacent to the joints, or any other non-joint <br />surfaces. If uncured sealants are introduced to prohibited areas, sealant shall be removed as <br />follows: <br /> <br /> 1. Non-porous Surfaces - Immediately remove all excess sealant adjacent to the joint and <br />elsewhere by using an appropriate solvent or cleaner while sealant is still in uncured state. <br /> <br />DocuSign Envelope ID: 7D9ACD4F-8F6C-42B6-9ADB-C60032DB6D03