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HomeMy WebLinkAbout07 92 00 Joint SealantsTHE KENT 07 92 00 - THE KENT Issue Date 05.09.18 JOINT SEALANTS THE KENT SECTION 07 92 00 - JOINT SEALANTS PART 1 - GENERAL 1.1 RELATED DOCUMENTS A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 01 Specification Sections, apply to this Section. 1.2 SUMMARY A. Section Includes: 1. Silicone joint sealants. 2. Urethane joint sealants. 3. Latex joint sealants. B. Related Requirements: 1. Section 32 13 73 "Concrete Paving Joint Sealants" for sealing joints in paved roads, parking lots, walkways, and curbing. 1.3 PRE-INSTALLATION MEETINGS A. Pre-installation Conference: Conduct conference at Project site. 1.4 ACTION SUBMITTALS A. Product Data: For each joint-sealant product. B. Samples for Initial Selection: Manufacturer's color charts consisting of strips of cured sealants showing the full range of colors available for each product exposed to view. C. Samples for Verification: For each kind and color of joint sealant required, provide Samples with joint sealants in 1/2-inch-wide joints formed between two 6-inch- long strips of material matching the appearance of exposed surfaces adjacent to joint sealants. D. Joint-Sealant Schedule: Include the following information: 1. Joint-sealant application, joint location, and designation. 2. Joint-sealant manufacturer and product name. 3. Joint-sealant formulation. 4. Joint-sealant color. 1.5 INFORMATIONAL SUBMITTALS A. Qualification Data: For qualified testing agency. THE KENT 07 92 00 - THE KENT Issue Date 05.09.18 JOINT SEALANTS THE KENT B. Product Test Reports: For each kind of joint sealant, for tests performed by manufacturer and witnessed by a qualified testing agency. C. Preconstruction Laboratory Test Schedule: Include the following information for each joint sealant and substrate material to be tested: 1. Joint-sealant location and designation. 2. Manufacturer and product name. 3. Type of substrate material. 4. Proposed test. 5. Number of samples required. D. Preconstruction Laboratory Test Reports: From sealant manufacturer, indicating the following: 1. Materials forming joint substrates and joint-sealant backings have been tested for compatibility and adhesion with joint sealants. 2. Interpretation of test results and written recommendations for primers and substrate preparation are needed for adhesion. E. Preconstruction Field-Adhesion-Test Reports: Indicate which sealants and joint preparation methods resulted in optimum adhesion to joint substrates based on testing specified in "Preconstruction Testing" Article. F. Field-Adhesion-Test Reports: For each sealant application tested. G. Sample Warranties: For special warranties. 1.6 QUALITY ASSURANCE A. Installer Qualifications: An authorized representative who is trained and approved by manufacturer. 1. Refer also to Specification Section 01 40 00 “Quality Requirements.” B. Product Testing: Test joint sealants using a qualified testing agency. 1. Testing Agency Qualifications: Qualified according to ASTM C 1021 to conduct the testing indicated. 2. Test according to SWRI's Sealant Validation Program for compliance with requirements specified by reference to ASTM C 920 for adhesion and cohesion under cyclic movement, adhesion-in-peel, and indentation hardness. C. Mockups: Install sealant in mockups of assemblies specified in other Sections that are indicated to receive joint sealants specified in this Section. Use materials and installation methods specified in this Section. 1.7 PRECONSTRUCTION TESTING A. Preconstruction Laboratory Testing: Submit to joint-sealant manufacturers, for testing indicated below, samples of materials that will contact or affect joint sealants. 1. Adhesion Testing: Use ASTM C 794 to determine whether priming and other specific joint preparation techniques are required to obtain rapid, optimum adhesion of joint sealants to joint substrates. 2. Compatibility Testing: Use ASTM C 1087 to determine sealant compatibility when in contact with glazing and gasket materials. THE KENT 07 92 00 - THE KENT Issue Date 05.09.18 JOINT SEALANTS THE KENT 3. Stain Testing: Use ASTM C 1248 to determine stain potential of sealant when in contact with stone and masonry substrates. 4. Submit manufacturer's recommended number of pieces of each type of material, including joint substrates, joint-sealant backings, and miscellaneous materials. 5. Schedule sufficient time for testing and analyzing results to prevent delaying the Work. 6. For materials failing tests, obtain joint-sealant manufacturer's written instructions for corrective measures, including use of specially formulated primers. 7. Testing will not be required if joint-sealant manufacturers submit data that are based on previous testing, not older than 24 months, of sealant products for adhesion to, staining of, and compatibility with joint substrates and other materials matching those submitted. B. Preconstruction Field-Adhesion Testing: Before installing sealants, field test their adhesion to Project joint substrates as follows: 1. Locate test joints where indicated on Project or, if not indicated, as directed by Architect. 2. Conduct field tests for each kind of sealant and joint substrate. 3. Notify Architect seven days in advance of dates and times when test joints will be erected. 4. Arrange for tests to take place with joint-sealant manufacturer's technical representative present. a. Test Method: Test joint sealants according to Method A, Field-Applied Sealant Joint Hand Pull Tab, in Appendix X1.1 in ASTM C 1193 or Method A, Tail Procedure, in ASTM C 1521. 1) For joints with dissimilar substrates, verify adhesion to each substrate separately; extend cut along one side, verifying adhesion to opposite side. Repeat procedure for opposite side. 5. Report whether sealant failed to adhere to joint substrates or tore cohesively. Include data on pull distance used to test each kind of product and joint substrate. For sealants that fail adhesively, retest until satisfactory adhesion is obtained. 6. Evaluation of Preconstruction Field-Adhesion-Test Results: Sealants not evidencing adhesive failure from testing, in absence of other indications of noncompliance with requirements, will be considered satisfactory. Do not use sealants that fail to adhere to joint substrates during testing. 1.8 FIELD CONDITIONS A. Do not proceed with installation of joint sealants under the following conditions: 1. When ambient and substrate temperature conditions are outside limits permitted by joint- sealant manufacturer or are below 40 deg F. 2. When joint substrates are wet. 3. Where joint widths are less than those allowed by joint-sealant manufacturer for applications indicated. 4. Where contaminants capable of interfering with adhesion have not yet been removed from joint substrates. 1.9 WARRANTY A. Special Installer's Warranty: Installer agrees to repair or replace joint sealants that do not comply with performance and other requirements specified in this Section within specified warranty period. 1. Warranty Period: Two years from date of Substantial Completion. THE KENT 07 92 00 - THE KENT Issue Date 05.09.18 JOINT SEALANTS THE KENT B. Special Manufacturer's Warranty: Manufacturer agrees to furnish joint sealants to repair or replace those joint sealants that do not comply with performance and other requirements specified in this Section within specified warranty period. 1. Warranty Period: Five years from date of Substantial Completion. C. Special warranties specified in this article exclude deterioration or failure of joint sealants from the following: 1. Movement of the structure caused by stresses on the sealant exceeding sealant manufacturer's written specifications for sealant elongation and compression. 2. Disintegration of joint substrates from causes exceeding design specifications. 3. Mechanical damage caused by individuals, tools, or other outside agents. 4. Changes in sealant appearance caused by accumulation of dirt or other atmospheric contaminants. PART 2 - PRODUCTS 2.1 JOINT SEALANTS, GENERAL A. Compatibility: Provide joint sealants, backings, and other related materials that are compatible with one another and with joint substrates under conditions of service and application, as demonstrated by joint-sealant manufacturer, based on testing and field experience. B. VOC Content: Sealants and sealant primers shall comply with the following: 1. Architectural sealants shall have a VOC content of 250 g/L or less. 2. Sealants and sealant primers for nonporous substrates shall have a VOC content of 250 g/L or less. C. Colors of Exposed Joint Sealants: As selected by Architect from manufacturer's full range. D. Liquid-Applied Joint Sealants: Comply with ASTM C 920 and other requirements indicated for each liquid-applied joint sealant specified, including those referencing ASTM C 920 classifications for type, grade, class, and uses related to exposure and joint substrates. 1. Suitability for Immersion in Liquids. Where sealants are indicated for Use I for joints that will be continuously immersed in liquids, provide products that have undergone testing according to ASTM C 1247. Liquid used for testing sealants is de-ionized water, unless otherwise indicated. E. Stain-Test-Response Characteristics: Where sealants are specified to be non-staining to porous substrates, provide products that have undergone testing according to ASTM C 1248 and have not stained porous joint substrates indicated for Project. 2.2 SILICONE JOINT SEALANTS A. Mildew-Resistant, Single-Component, Non-sag, Neutral-Curing Silicone Joint Sealant: ASTM C 920, Type S, Grade NS, Class 25, for Use NT. 1. Products: Subject to compliance with requirements, provide one of the following: a. Pecora Corporation; 898. THE KENT 07 92 00 - THE KENT Issue Date 05.09.18 JOINT SEALANTS THE KENT 2.3 URETHANE JOINT SEALANTS A. Single-Component, Non-sag, Urethane Joint Sealant: ASTM C 920, Type S, Grade NS, Class 100/50, for Use NT. 1. Products: Subject to compliance with requirements, provide one of the following: a. Sika Corporation, Construction Products Division; Sikaflex - 15LM. b. Tremco Incorporated; Vulkem 921. B. Single-Component, Non-sag, Urethane Joint Sealant: ASTM C 920, Type S, Grade NS, Class 50, for Use NT. 1. Products: Subject to compliance with requirements, provide one of the following: a. Pacific Polymers International, Inc.; Elasto-Thane 230 LM Type II. b. Polymeric Systems, Inc.; PSI-901. C. Single-Component, Non-sag, Urethane Joint Sealant: ASTM C 920, Type S, Grade NS, Class 25, for Use NT. 1. Products: Subject to compliance with requirements, provide one of the following: a. BASF Building Systems; Sonolastic NP1. b. Pecora Corporation; Dynatrol I-XL. c. Polymeric Systems, Inc.; Flexiprene 1000. d. Sika Corporation, Construction Products Division; Sikaflex - 1a. e. Tremco Incorporated; Vulkem 116. D. Single-Component, Non-sag, Urethane Joint Sealant: ASTM C 920, Type S, Grade NS, Class 35, for Use NT, M, A and O. 1. Products: Subject to compliance with requirements, provide one of the following: a. Euclid Chemical Co.; Eucolastic 1NS. E. Single-Component, Pourable, Traffic-Grade, Urethane Joint Sealant: ASTM C 920, Type S, Grade P, Class 25, for Use T. 1. Products: Subject to compliance with requirements, provide one of the following: a. BASF Building Systems; Sonolastic SL 1. b. Bostik, Inc.; Chem-Calk 950. c. Pecora Corporation; Urexpan NR-201. d. Polymeric Systems, Inc.; Flexiprene 952. e. Sika Corporation. Construction Products Division; Sikaflex - 1CSL. f. Tremco Incorporated; Vulkem 45. 2.4 LATEX JOINT SEALANTS A. Latex Joint Sealant: Acrylic latex or siliconized acrylic latex, ASTM C 834, Type OP, Grade NF. 1. Products: Subject to compliance with requirements, provide one of the following: a. BASF Building Systems; Sonolac. b. Bostik, Inc.; Chem-Calk 600. c. Pecora Corporation; AC-20+. d. Schnee-Morehead, Inc.; SM 8200. e. Tremco Incorporated; Tremflex 834. THE KENT 07 92 00 - THE KENT Issue Date 05.09.18 JOINT SEALANTS THE KENT 2.5 JOINT-SEALANT BACKING A. Sealant Backing Material, General: Non-staining; compatible with joint substrates, sealants, primers, and other joint fillers; and approved for applications indicated by sealant manufacturer based on field experience and laboratory testing. B. Cylindrical Sealant Backings: ASTM C 1330, Type C (closed-cell material with a surface skin), and of size and density to control sealant depth and otherwise contribute to producing optimum sealant performance. C. Bond-Breaker Tape: Polyethylene tape or other plastic tape recommended by sealant manufacturer for preventing sealant from adhering to rigid, inflexible joint-filler materials or joint surfaces at back of joint. Provide self-adhesive tape where applicable. 2.6 MISCELLANEOUS MATERIALS A. Primer: Material recommended by joint-sealant manufacturer where required for adhesion of sealant to joint substrates indicated, as determined from preconstruction joint-sealant-substrate tests and field tests. B. Cleaners for Non-Porous Surfaces: Chemical cleaners acceptable to manufacturers of sealants and sealant backing materials, free of oily residues or other substances capable of staining or harming joint substrates and adjacent nonporous surfaces in any way and formulated to promote optimum adhesion of sealants to joint substrates. C. Masking Tape: Non-staining, non-absorbent material compatible with joint sealants and surfaces adjacent to joints. PART 3 - EXECUTION 3.1 EXAMINATION A. Examine joints indicated to receive joint sealants, with Installer present, for compliance with requirements for joint configuration, installation tolerances, and other conditions affecting performance of the Work. B. Proceed with installation only after unsatisfactory conditions have been corrected. 3.2 PREPARATION A. Surface Cleaning of Joints: Clean out joints immediately before installing joint sealants to comply with joint-sealant manufacturer's written instructions and the following requirements: 1. Remove all foreign material from joint substrates that could interfere with adhesion of joint sealant, including dust, paints (except for permanent, protective coatings tested and approved for sealant adhesion and compatibility by sealant manufacturer), old joint sealants, oil, grease, waterproofing, water repellents, water, surface dirt, and frost. 2. Clean porous joint substrate surfaces by brushing, grinding, mechanical abrading, or a combination of these methods to produce a clean, sound substrate capable of developing optimum bond with joint sealants. Remove loose particles remaining after cleaning THE KENT 07 92 00 - THE KENT Issue Date 05.09.18 JOINT SEALANTS THE KENT operations above by vacuuming or blowing out joints with oil-free compressed air. Porous joint substrates include the following: a. Concrete. b. Masonry. c. Unglazed surfaces of ceramic tile. d. Exterior insulation and finish systems. 3. Remove laitance and form-release agents from concrete. 4. Clean non-porous joint substrate surfaces with chemical cleaners or other means that do not stain, harm substrates, or leave residues capable of interfering with adhesion of joint sealants. Nonporous joint substrates include the following: a. Metal. b. Glass. c. Porcelain enamel. d. Glazed surfaces of ceramic tile. B. Joint Priming: Prime joint substrates where recommended by joint-sealant manufacturer or as indicated by preconstruction joint-sealant-substrate tests or prior experience. Apply primer to comply with joint-sealant manufacturer's written instructions. Confine primers to areas of joint- sealant bond; do not allow spillage or migration onto adjoining surfaces. C. Masking Tape: Use masking tape where required to prevent contact of sealant or primer with adjoining surfaces that otherwise would be permanently stained or damaged by such contact or by cleaning methods required to remove sealant smears. Remove tape immediately after tooling without disturbing joint seal. 3.3 INSTALLATION OF JOINT SEALANTS A. General: Comply with joint-sealant manufacturer's written installation instructions for products and applications indicated, unless more stringent requirements apply. B. Sealant Installation Standard: Comply with recommendations in ASTM C 1193 for use of joint sealants as applicable to materials, applications, and conditions indicated. C. Install sealant backings of kind indicated to support sealants during application and at position required to produce cross-sectional shapes and depths of installed sealants relative to joint widths that allow optimum sealant movement capability. 1. Do not leave gaps between ends of sealant backings. 2. Do not stretch, twist, puncture, or tear sealant backings. 3. Remove absorbent sealant backings that have become wet before sealant application and replace them with dry materials. D. Install bond-breaker tape behind sealants where sealant backings are not used between sealants and backs of joints. E. Install sealants using proven techniques that comply with the following and at the same time backings are installed: 1. Place sealants so they directly contact and fully wet joint substrates. 2. Completely fill recesses in each joint configuration. 3. Produce uniform, cross-sectional shapes and depths relative to joint widths that allow optimum sealant movement capability. THE KENT 07 92 00 - THE KENT Issue Date 05.09.18 JOINT SEALANTS THE KENT F. Tooling of Non-Sag Sealants: Immediately after sealant application and before skinning or curing begins, tool sealants according to requirements specified in subparagraphs below to form smooth, uniform beads of configuration indicated; to eliminate air pockets; and to ensure contact and adhesion of sealant with sides of joint. 1. Remove excess sealant from surfaces adjacent to joints. 2. Use tooling agents that are approved in writing by sealant manufacturer and that do not discolor sealants or adjacent surfaces. 3. Provide concave joint profile per Figure 8A in ASTM C 1193 unless otherwise indicated. 4. Provide flush joint profile at locations indicated on Drawings according to Figure 8B in ASTM C 1193. 5. Provide recessed joint configuration of recess depth and at locations indicated on Drawings according to Figure 8C in ASTM C 1193. a. Use masking tape to protect surfaces adjacent to recessed tooled joints. 3.4 FIELD QUALITY CONTROL A. Field-Adhesion Testing: Field test joint-sealant adhesion to joint substrates as follows: 1. Extent of Testing: Test completed and cured sealant joints as follows: a. Perform 10 tests for the first 1000 feet of joint length for each kind of sealant and joint substrate. b. Perform one test for each 1000 feet of joint length thereafter or one test per each floor per elevation. 2. Test Method: Test joint sealants according to Method A, Field-Applied Sealant Joint Hand Pull Tab, in Appendix X1 in ASTM C 1193 or Method A, Tail Procedure, in ASTM C 1521. a. For joints with dissimilar substrates, verify adhesion to each substrate separately; extend cut along one side, verifying adhesion to opposite side. Repeat procedure for opposite side. 3. Inspect tested joints and report on the following: a. Whether sealants filled joint cavities and are free of voids. b. Whether sealant dimensions and configurations comply with specified requirements. c. Whether sealants in joints connected to pulled-out portion failed to adhere to joint substrates or tore cohesively. Include data on pull distance used to test each kind of product and joint substrate. Compare these results to determine if adhesion complies with sealant manufacturer's field-adhesion hand-pull test criteria. 4. Record test results in a field-adhesion-test log. Include dates when sealants were installed, names of persons who installed sealants, test dates, test locations, whether joints were primed, adhesion results and percent elongations, sealant material, sealant configuration, and sealant dimensions. 5. Repair sealants pulled from test area by applying new sealants following same procedures used originally to seal joints. Ensure that original sealant surfaces are clean and that new sealant contacts original sealant. B. Evaluation of Field-Adhesion-Test Results: Sealants not evidencing adhesive failure from testing or noncompliance with other indicated requirements will be considered satisfactory. Remove sealants that fail to adhere to joint substrates during testing or to comply with other requirements. Retest failed applications until test results prove sealants comply with indicated requirements. THE KENT 07 92 00 - THE KENT Issue Date 05.09.18 JOINT SEALANTS THE KENT 3.5 CLEANING A. Clean off excess sealant or sealant smears adjacent to joints as the Work progresses by methods and with cleaning materials approved in writing by manufacturers of joint sealants and of products in which joints occur. 3.6 PROTECTION A. Protect joint sealants during and after curing period from contact with contaminating substances and from damage resulting from construction operations or other causes so sealants are without deterioration or damage at time of Substantial Completion. If, despite such protection, damage or deterioration occurs, cut out, remove, and repair damaged or deteriorated joint sealants immediately so installations with repaired areas are indistinguishable from original work. END OF SECTION 07 92 00