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HomeMy WebLinkAbout07-9200-Joint-Sealants-(Part-of-FSB-07-0001)_Rev_1Dennis Yarmouth Intermediate Middle School January 19, 2021 Dennis Yarmouth Regional School District 100% Construction Documents Perkins Eastman DPC, project #71011 JOINT SEALANTS 07 9200 - 1 SECTION 07 9200 JOINT SEALANTS (Part of Filed Sub-Bid Section 07 0001 - Waterproofing, Dampproofing, And Caulking) 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. Work Included: Provide labor, materials and equipment necessary to complete the work of this Section, including but not limited to the following: 1. Nonstaining silicone joint sealants. 2. Urethane joint sealants. 3. Mildew-resistant joint sealants. 4. Butyl joint sealants. 5. Latex joint sealants. 6. Other items indicated on Drawings as Work of this Section. B. Related Requirements: 1. Section 01 8113 “Sustainable Design Requirements” for general requirements and procedures for compliance with certain USGBC LEED prerequisites and credits. 2. Section 01 9113 “General Commissioning Requirements." 3. Section 01 9119 “Facility Shell Commissioning" for commissioning process requirements for facility shell commissioning. 4. Section 04 2000 "Unit Masonry" for masonry control and expansion joint fillers and gaskets. 5. Section 07 8413 “Penetration Firestopping" for sealing penetrations in fire-resistance- rated construction. 6. Section 07 8443 "Joint Firestopping" for sealing joints in fire-resistance-rated construction. 7. Section 07 9100 “Preformed Joint Seals.” 8. Section 07 9219 "Acoustical Joint Sealants" for sealing joints in sound-rated construction. 9. Section 08 4113 “Aluminum-Framed Entrances And Storefronts" for sealant installed in conjunction with aluminum-framed storefronts, concealed (inaccessible) after storefront installation. 10. Section 08 4413 “Glazed Aluminum Curtain Walls" for sealant installed in conjunction with curtain wall assemblies, concealed (inaccessible) after curtain wall installation. 11. Section 08 7100 "Door Hardware" for concealed sealants installed with thresholds. 12. Section 08 8000 "Glazing" for glazing sealants. 13. Section 08 8813 “Fire-Resistant Glazing" for fire-resistant glazing sealants. 14. Section 09 2116.23 “Gypsum Board Shaft Wall Assemblies" for concealed acoustical sealants installed as part of a gypsum board shaft wall assembly. 15. Section 09 2900 "Gypsum Board" for concealed acoustical sealants installed as part of a gypsum board assembly. Dennis Yarmouth Intermediate Middle School January 19, 2021 Dennis Yarmouth Regional School District 100% Construction Documents Perkins Eastman DPC, project #71011 JOINT SEALANTS 07 9200 - 2 1.3 PREINSTALLATION MEETINGS A. Preinstallation Conference: Conduct conference at Project site. 1.4 ACTION SUBMITTALS A. Make Submittals in accordance with Section 01 3300 “Submittal Procedures.” B. Product Data: For each joint-sealant product. C. Sustainable Design Submittals: 1. Health Product Declaration (HPD): Provide manufacturers’ product documentation for each product having a publically available material inventory down to at least 0.1 percent or 1000 ppm. a. Documentation should be in the form of one of the following: 1) A publically available inventory of all ingredients identified by name and Chemical Abstract Service Registration Number (CASRN). 2) A published, complete Health Product Declaration in compliance with the Health Product Declaration open Standard. 3) Material Health Certificate or Cradle to Cradle Certification under standard version 3 or later with a Material Health Achievement level at the Bronze level or higher. 4) A Declare product label indicating that all ingredients have been evaluated and disclosed down to 1000 ppm. 5) Cradle to Cradle Material Health Certificate at the Bronze Level or higher. b. Complete "LEED Materials Documentation Sheet" with MRc2 information for each product having an EPD. 2. Adhesives And Sealants: Provide manufacturers' or third-party certification of testing to and compliance with the California Department of Public Health (CDPH) Standard method v1.2-2017, that includes the following information: a. The exposure scenario used to determine compliance. b. The range of total VOCs after 14 days, measured as specified in the CDPH Standard Method v1.2: 1) 0.5 mg/m^3 or less; 2) Between 0.5 and 5.0 mg/m^3; or 3) 5.0 mg/m^3 or more. c. Laboratory accreditation under ISO/IEC 17025. d. Claims of compliance for wet-applied products must state the amount applied in mass per surface area. e. Provide MSDS or other manufacturer documentation with disclosure of VOC content for all wet-applied products. f. Complete "LEED Materials Documentation Sheet" with IEQc2 information for adhesives/sealants installed within the waterproofing membrane. D. 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. E. 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. Dennis Yarmouth Intermediate Middle School January 19, 2021 Dennis Yarmouth Regional School District 100% Construction Documents Perkins Eastman DPC, project #71011 JOINT SEALANTS 07 9200 - 3 1.5 INFORMATIONAL SUBMITTALS A. Qualification Data: For qualified testing agency. B. Product Test Reports: For each kind of joint sealant, for tests performed by manufacturer and witnessed by a qualified testing agency. C. 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. D. Field-Adhesion-Test Reports: For each sealant application tested. E. Sample Warranties: For special warranties. 1.6 QUALITY ASSURANCE A. Installer Qualifications: An authorized representative who is trained and approved by manufacturer. 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. 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 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. Dennis Yarmouth Intermediate Middle School January 19, 2021 Dennis Yarmouth Regional School District 100% Construction Documents Perkins Eastman DPC, project #71011 JOINT SEALANTS 07 9200 - 4 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. 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. 2. Warranty Period for Silcone Sealants: 20 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 LEED REQUIREMENTS A. Health Product Declaration (HPD): Provide products with publically available material inventories whenever available. B. Adhesives And Sealants: For field applications that are inside the weatherproofing membrane: Adhesives/sealants must be tested and determined compliant in accordance with California Department of Public Health (CDPH) Standard Method v1.2-2017, using the applicable exposure scenario. The default scenario is the private office scenario. 1. All adhesives/sealants wet-applied on site must meet the applicable chemical content requirements of SCAQMD Rule 1168, October 6, 2017, Adhesive and Sealant Applications, as analyzed by the methods specified in Rule 1168. The provisions of SCAQMD Rule 1168 do not apply to adhesives and sealants subject to state or federal consumer product VOC regulations. Dennis Yarmouth Intermediate Middle School January 19, 2021 Dennis Yarmouth Regional School District 100% Construction Documents Perkins Eastman DPC, project #71011 JOINT SEALANTS 07 9200 - 5 2.2 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. Colors of Exposed Joint Sealants: As selected by Architect from manufacturer's full range. 2.3 NONSTAINING SILICONE JOINT SEALANTS A. Nonstaining Joint Sealants: No staining of substrates when tested according to ASTM C 1248. B. Silicone, Nonstaining, S, NS, 50, NT: Nonstaining, single-component, nonsag, plus 50 percent and minus 50 percent movement capability, nontraffic-use, neutral-curing silicone joint sealant; ASTM C 920, Type S, Grade NS, Class 50, Use NT. 1. Products: Subject to compliance with requirements, products that may be incorporated into the Work include, but are not limited to the following or equal: a. Dow Corning Corporation; 756 SMS or 795. b. GE Construction Sealants; SilPruf NB. c. May National Associates, Inc., a subsidiary of Sika Corporation U.S.; Bondaflex Sil 295 FPS NB. d. Pecora Corporation; 864NST or 895NST or 898NST. e. Tremco Incorporated; Spectrem 2 or Spectrem 3. 2.4 URETHANE JOINT SEALANTS A. Urethane, S, NS, 25, NT: Single-component, nonsag, nontraffic-use, plus 25 percent and minus 25 percent movement capability, urethane joint sealant; ASTM C 920, Type S, Grade NS, Class 25, Use NT. 1. Products: Subject to compliance with requirements, products that may be incorporated into the Work include, but are not limited to the following or equal: a. BASF Construction Chemicals, LLC, Building Systems; Sonalastic TX1. b. Bostik, Inc.; Chem-Calk GPS1. c. Pecora Corporation; Dynatrol I-XL. d. Schnee-Morehead, Inc., an ITW company; Permathane SM7108. e. Tremco Incorporated; Dymonic FC. B. Urethane, S, P, 25, T, NT: Single-component, pourable, plus 25 percent and minus 25 percent movement capability, traffic- and nontraffic-use, urethane joint sealant; ASTM C 920, Type S, Grade P, Class 25, Uses T and NT. 1. Products: Subject to compliance with requirements, products that may be incorporated into the Work include, but are not limited to the following or equal: a. BASF Construction Chemicals, LLC, Building Systems; Sonolastic SL 1. b. Pecora Corporation; NR-201. c. Polymeric Systems, Inc.; Flexiprene 952. d. Schnee-Morehead, Inc.; an ITW company; Permathane SM7101. 2.5 MILDEW-RESISTANT JOINT SEALANTS A. Mildew-Resistant Joint Sealants: Formulated for prolonged exposure to humidity with fungicide to prevent mold and mildew growth. Dennis Yarmouth Intermediate Middle School January 19, 2021 Dennis Yarmouth Regional School District 100% Construction Documents Perkins Eastman DPC, project #71011 JOINT SEALANTS 07 9200 - 6 B. Silicone, Mildew Resistant, Acid Curing, S, NS, 25, NT: Mildew-resistant, single-component, nonsag, plus 25 percent and minus 25 percent movement capability, nontraffic-use, acid-curing silicone joint sealant; ASTM C 920, Type S, Grade NS, Class 25, Use NT. 1. Products: Subject to compliance with requirements, products that may be incorporated into the Work include, but are not limited to the following or equal: a. Dow Corning Corporation; 786-M White. b. GE Construction Sealants; SCS1700 Sanitary. c. May National Associates, Inc., a subsidiary of Sika Corporation U.S.; Bondaflex Sil 100 WF. d. Soudal USA; RTV GP. e. Tremco Incorporated; Tremsil 200. 2.6 BUTYL JOINT SEALANTS A. Butyl-Rubber-Based Joint Sealants: ASTM C 1311. 1. Products: Subject to compliance with requirements, products that may be incorporated into the Work include, but are not limited to the following or equal: a. Bostik, Inc.; Chem-Calk 300. b. Pecora Corporation; BC-158. 2.7 LATEX JOINT SEALANTS A. Acrylic Latex: Acrylic latex or siliconized acrylic latex, ASTM C 834, Type OP, Grade NF. 1. Products: Subject to compliance with requirements, products that may be incorporated into the Work include, but are not limited to the following or equal: a. BASF Construction Chemicals, LLC, Building Systems; Sonolac. b. May National Associates, Inc., a subsidiary of Sika Corporation U.S.; Bondaflex 600 or Bondaflex Sil-A 700. c. Pecora Corporation; AC-20. d. Tremco Incorporated; Tremflex 834. 2.8 JOINT-SEALANT BACKING A. Sealant Backing Material, General: Nonstaining; 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. 2.9 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. Dennis Yarmouth Intermediate Middle School January 19, 2021 Dennis Yarmouth Regional School District 100% Construction Documents Perkins Eastman DPC, project #71011 JOINT SEALANTS 07 9200 - 7 B. Cleaners for Nonporous 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: Nonstaining, nonabsorbent 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 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. 3. Remove laitance and form-release agents from concrete. 4. Clean nonporous 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. Dennis Yarmouth Intermediate Middle School January 19, 2021 Dennis Yarmouth Regional School District 100% Construction Documents Perkins Eastman DPC, project #71011 JOINT SEALANTS 07 9200 - 8 3.3 INSTALLATION OF JOINT SEALANTS A. 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. F. Tooling of Nonsag 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. 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 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 Dennis Yarmouth Intermediate Middle School January 19, 2021 Dennis Yarmouth Regional School District 100% Construction Documents Perkins Eastman DPC, project #71011 JOINT SEALANTS 07 9200 - 9 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. 3.5 COMMISSIONING A. Facility Shell Commissioning: The building enclosure will be inspected and tested by Owner’s testing agency and witnessed by the Owner’s Commissioning Agent during construction. Comply with commissioning process requirements. 1. Commissioning Agent: During construction the Owner’s commissioning agent will perform site visits to observe that the construction is in general conformance with the Contract Documents. Observations by the Commissioning Agent will be on a “spot check” basis. 2. Commissioning requirements shall not reduce nor diminish the responsibility of Contractor, subcontractors, and material suppliers in performing the Work as required by Contract Documents. Requirements specified in commissioning requirements are in addition to requirements specified in related specification Sections. 3. Repair or replace materials, products, and components damaged by testing at no additional cost to Owner. Replace materials, products, and components that fail inspections and tests at no additional cost to Owner. 3.6 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. 3.7 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. 3.8 JOINT-SEALANT SCHEDULE A. Joint-Sealant Application: Exterior joints in horizontal traffic surfaces. 1. Joint Locations: Dennis Yarmouth Intermediate Middle School January 19, 2021 Dennis Yarmouth Regional School District 100% Construction Documents Perkins Eastman DPC, project #71011 JOINT SEALANTS 07 9200 - 10 a. Isolation and contraction joints in cast-in-place concrete slabs. b. Joints between different materials listed above. c. Other joints as indicated on Drawings. 2. Joint Sealant: Urethane, S, P, 25, T, NT. 3. Joint-Sealant Color: As selected by Architect from manufacturer's full range of colors. B. Joint-Sealant Application: Exterior joints in vertical surfaces and horizontal nontraffic surfaces. 1. Joint Locations: a. Construction joints in cast-in-place concrete. b. Control and expansion joints in unit masonry. c. Joints in architectural precast concrete trim units. d. Joints between metal panels. e. Joints between different materials listed above. f. Perimeter joints between materials listed above and frames of doors, windows, and louvers. g. Control and expansion joints in ceilings and other overhead surfaces. h. Other joints as indicated on Drawings. 2. Joint Sealant: Silicone, nonstaining, S, NS, 50, NT. 3. Joint-Sealant Color: As selected by Architect from manufacturer's full range of colors. C. Joint-Sealant Application: Interior joints in horizontal traffic surfaces. 1. Joint Locations: a. Isolation joints in cast-in-place concrete slabs. b. Control and expansion joints in tile flooring. c. Other joints as indicated on Drawings. 2. Joint Sealant: Urethane, S, P, 25, T, NT. 3. Joint-Sealant Color: As selected by Architect from manufacturer's full range of colors. D. Joint-Sealant Application: Interior joints in vertical surfaces and horizontal nontraffic surfaces. 1. Joint Locations: a. Expansion joints on exposed interior surfaces of exterior walls. b. Tile control and expansion joints. c. Vertical joints on exposed surfaces of unit masonry and partitions. d. Other joints as indicated on Drawings. 2. Joint Sealant: Urethane, S, NS, 25, NT. 3. Joint-Sealant Color: As selected by Architect from manufacturer's full range of colors. E. Joint-Sealant Application: Interior joints in vertical surfaces and horizontal nontraffic surfaces not subject to significant movement. 1. Joint Locations: a. Control joints on exposed interior surfaces of exterior walls. b. Perimeter joints between interior wall surfaces and windows, frames of interior doors, and elevator entrances. c. Tile control and expansion joints (other than in wet locations). d. Gaps between wood standing and running trim (window casings, door casings, baseboard, chair rails, crown moldings) and gypsum board surfaces. e. Other joints as indicated on Drawings. 2. Joint Sealant: Acrylic latex. 3. Joint-Sealant Color: As selected by Architect from manufacturer's full range of colors. F. Joint-Sealant Application: Mildew-resistant interior joints in vertical surfaces and horizontal nontraffic surfaces. 1. Joint Locations: a. Joints between plumbing fixtures and adjoining walls, floors, and counters. Dennis Yarmouth Intermediate Middle School January 19, 2021 Dennis Yarmouth Regional School District 100% Construction Documents Perkins Eastman DPC, project #71011 JOINT SEALANTS 07 9200 - 11 b. Tile control and expansion joints where indicated. c. Other joints as indicated on Drawings. 2. Joint Sealant: Silicone, mildew resistant, acid curing, S, NS, 25, NT. 3. Joint-Sealant Color: As selected by Architect from manufacturer's full range of colors. G. Joint-Sealant Application: Concealed mastics. 1. Joint Locations: a. Aluminum thresholds. b. Sill plates. c. Other joints as indicated on Drawings. 2. Joint Sealant: Butyl-rubber based. END OF SECTION (THIS PAGE IS BLANK)