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HomeMy WebLinkAbout09-6421-Tempered-Hardboard-Flooring_Rev_1Dennis Yarmouth Intermediate Middle School January 19, 2021 Dennis Yarmouth Regional School District 100% Construction Documents Perkins Eastman DPC, project #71011 TEMPERED HARDBOARD FLOORING 09 6421 - 1 SECTION 09 6421 TEMPERED HARDBOARD FLOORING 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. Tempered hardboard flooring. 2. Slip sheet (rosin-sized building paper.) 3. Resilient pads. 4. Wood sleepers and subfloor . 5. Vapor retarders. 6. Sound attenuation blanket insulation. 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 05 5000 “Metal Fabrications” for vented metal wall base angles and for metal transition/expansion plates between floor assembly and adjacent floor. 3. Section 06 1000 “Rough Carpentry” for wood sleepers. 4. Section 06 1600 "Sheathing” for plywood subflooring. 5. Section 09 6400 “Wood Flooring" for solid-wood flooring. 6. Section 09 6466 "Wood Athletic Flooring" for wood resilient systems used in sports- activity areas. 7. Section 09 6513 “Resilient Base And Accessories” for vented rubber base. 8. Section 09 6516 "Resilient Sheet Flooring" for rubber sheet flooring (RBF-03). 9. Section 09 6566 “Resilient Athletic Flooring” for rubber floor tile (RBF-01). 10. Section 09 0007 “Painting" for field painting tempered hardboard flooring. 1.3 ACTION SUBMITTALS A. Make Submittals in accordance with Section 01 3300 “Submittal Procedures.” B. Product Data: For each type of product. C. Sustainable Design Submittals: 1. Recycled Content: Provide manufacturers’ product documentation that includes recycled content claims for the products contributing towards compliance. Claims must conform to the definition in ISO 14021-1999, Environmental Labels and Declarations, Self-Declared Environmental Claims. a. Complete "LEED Materials Documentation Sheet" with MRc3 Option 2 information for products with recycled content installed in the building. Dennis Yarmouth Intermediate Middle School January 19, 2021 Dennis Yarmouth Regional School District 100% Construction Documents Perkins Eastman DPC, project #71011 TEMPERED HARDBOARD FLOORING 09 6421 - 2 2. Flooring Systems: 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. Complete "LEED Materials Documentation Sheet" with IEQc2 information for flooring systems installed within the waterproofing membrane. D. Shop Drawings: For each type of floor assembly and accessory. Include plans, sections, and attachment details. Include expansion provisions and trim details. E. Samples for Verification: For tempered hardboard flooring and accessories, with paint color and finish required, approximately 12 inches long and of same thickness and material indicated for the Work. 1.4 INFORMATIONAL SUBMITTALS A. Product Certificates: Submit certificates for composite wood products for compliance with TSCA Title VI, CARB Phase 2, or both. 1.5 MAINTENANCE MATERIAL SUBMITTALS A. Furnish extra materials that match products installed and that are packaged with protective covering for storage and identified with labels describing contents. 1. Wood Flooring: Equal to 1 percent of amount installed for each type, color, and finish of wood flooring indicated. 1.6 QUALITY ASSURANCE A. Mockups: Build mockups to verify selections made under Sample submittals, to demonstrate aesthetic effects, and to set quality standards for materials and execution. 1. Approval of mockups does not constitute approval of deviations from the Contract Documents contained in mockups unless Architect specifically approves such deviations in writing. 2. Subject to compliance with requirements, approved mockups may become part of the completed Work if undisturbed at time of Substantial Completion. 1.7 DELIVERY, STORAGE, AND HANDLING A. Deliver tempered hardboard flooring materials in unopened cartons or bundles. Dennis Yarmouth Intermediate Middle School January 19, 2021 Dennis Yarmouth Regional School District 100% Construction Documents Perkins Eastman DPC, project #71011 TEMPERED HARDBOARD FLOORING 09 6421 - 3 B. Protect tempered hardboard flooring from exposure to moisture. Do not deliver tempered hardboard flooring until after concrete, masonry, plaster, ceramic tile, and similar wet-work is complete and dry. C. Store tempered hardboard flooring materials in a dry, warm, ventilated, weathertight location. 1.8 FIELD CONDITIONS A. Conditioning period begins not less than seven days before wood flooring installation, is continuous through installation, and continues not less than seven days after tempered hardboard flooring installation. 1. Environmental Conditioning: Maintain ambient temperature between 65 and 75 deg F and relative humidity planned for building occupants in spaces to receive tempered hardboard flooring during the conditioning period. 2. Wood Flooring Conditioning: Move tempered hardboard flooring into spaces where it will be installed, no later than the beginning of the conditioning period. a. Do not install flooring until it adjusts to relative humidity of, and is at same temperature as, space where it is to be installed. b. Open sealed packages to allow wood flooring to acclimatize immediately on moving flooring into spaces in which it will be installed. B. After conditioning period, maintain relative humidity and ambient temperature planned for building occupants. PART 2 - PRODUCTS 2.1 LEED REQUIREMENTS A. Recycled Content: Provide products with the maximum recycled content possible. Minimum recycled content 20 percent. B. Flooring Systems: Flooring products 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 if the private office scenario. 2.2 TEMPERED HARDBOARD FLOORING A. Tempered Hardboard Flooring: AHA A135.4, Class 1 (Tempered), surfaced-two-sides (S2S). 1. Nominal Thickness: 1/4 inch. 2.3 ACCESSORY MATERIALS A. Wood Sleepers and Subfloor: As specified in Section 06 1000 "Rough Carpentry" and Section 06 1600 "Sheathing." B. Vapor Retarder: ASTM D4397, polyethylene sheet not less than 6.0 mils thick. C. Resilient Pads: Flexible, multicellular, closed-cell, expanded polyethylene-foam sheet; nominal 2-lb/cu. ft. density. 1. Basis-of-Design Product: Mason Industries, Inc.; Mason Super W Pads or equal. Dennis Yarmouth Intermediate Middle School January 19, 2021 Dennis Yarmouth Regional School District 100% Construction Documents Perkins Eastman DPC, project #71011 TEMPERED HARDBOARD FLOORING 09 6421 - 4 2. Durometer: 45. 3. Thickness: 3/4 inch. D. Sound Attenuation Blanket Insulation: Mineral-wool blanket, unfaced, ASTM C 665, Type I (blankets without membrane facing); consisting of fibers; with maximum flame-spread and smoke-developed indexes of 25 and 50, respectively, per ASTM E 84; passing ASTM E 136 for combustion characteristics. E. Slip Sheet: Rosin-sized building paper, 3 lb/100 sq. ft. minimum. F. Tempered Hardboard Flooring Fasteners: Provide countersunk square-drive, deep-thread, metal screws. PART 3 - EXECUTION 3.1 EXAMINATION A. Examine substrates, areas, and conditions, with Installer present, for compliance with requirements for maximum moisture content, installation tolerances, and other conditions affecting performance of tempered hardboard flooring. B. Proceed with installation only after unsatisfactory conditions have been corrected. 3.2 PREINSTALLATION TESTING A. Responsibility: Owner will engage an Independent Testing Agency to test and evaluate relative humidity and moisture content of concrete slabs, and to make recommendations for moisture mitigation if required. Subcontractor for the Work of this Section shall comply with the recommendations of Owner's Independent Testing Agency, regardless if Subcontractor's testing provides different results. B. Acceptance: Owner will decide, based on testing results and flooring manufacturer’s recommended maximum relative humidity and moisture content, if concrete substrate is acceptable for installation of floor covering. Do not proceed with installation of floor covering without Owner’s written authorization to proceed. C. Remediation: If Owner determines concrete substrate is not acceptable for installation of floor covering, Contractor shall provide a fluid-applied, resin-based, membrane-forming system as specified in Section 09 0561.13 “Moisture Vapor Emission Control.” Remediation work will be measured and paid for under the provisions of unit prices. 3.3 PREPARATION A. Broom or vacuum clean substrates to be covered immediately before product installation. Proceed with installation only after unsatisfactory conditions have been corrected. B. Paint both sides of tempered hardboard flooring before installing. Dennis Yarmouth Intermediate Middle School January 19, 2021 Dennis Yarmouth Regional School District 100% Construction Documents Perkins Eastman DPC, project #71011 TEMPERED HARDBOARD FLOORING 09 6421 - 5 3.4 INSTALLATION A. Wood Sleepers and Subfloor: Install according to requirements in Section 06 1000 "Rough Carpentry" and Section 06 1600 "Sheathing." 1. Vapor Retarder: Install a layer of polyethylene sheet over concrete slab. 2. Resilient Pads: Install resilent pads over polyethylene vapor retarder under wood sleepers. 3. Provide expansion space at walls and other obstructions and terminations of flooring as indicated on Drawings. B. Sound Attenuation Blanket Insulation: Install over vapor retarder between wood sleepers according to manufacturer's written instructions. C. Tempered Hardboard Flooring: Attach tempered hardboard flooring to wood subfloor with countersunk metal screws. Set screw heads flush with surface. 1. Install hardboard flooring over a layer of rosin-sized building paper. 2. Space panels 1/8 inch apart at edges and ends. 3. Install fasteners 3/8 inch to 1/2 inch from panel edges. 4. Space fasteners 8 inches on centers on panel edges, and 12 inches on centers in the field of the panels. END OF SECTION (THIS PAGE IS BLANK)