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HomeMy WebLinkAbout12 36 23 Plastic-Laminate-Clad CountertopsTHE KENT 12 36 23 - THE KENT Issue Date 05.09.18 PLASTIC-LAMINATE CLAD COUNTERTOPS THE KENT SECTION 12 36 23 - PLASTIC-LAMINATE-CLAD COUNTERTOPS 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 plastic-laminate countertops. B. Related Sections: 1. Refer to 06 41 16 “Custom Plastic Laminate Panels” for counter supports. 1.3 ACTION SUBMITTALS A. Product Data: For each type of product, including panel products high-pressure decorative laminate adhesive for bonding plastic laminate and fire-retardant-treated materials. 1. Include data for fire-retardant treatment from chemical-treatment manufacturer and certification by treating plant that treated materials comply with requirements. B. Shop Drawings: Show location of each item, dimensioned plans and elevations, large-scale details, attachment devices, and other components. 1. Show locations and sizes of cutouts and holes for plumbing fixtures, faucets, soap dispensers, electrical switches and outlets and other items installed in plastic-laminate countertops. 2. Apply AWI Quality Certification Program label to Shop Drawings. C. Samples for Initial Selection: 1. Plastic laminates. D. Samples for Verification: 1. Plastic laminates, 8 by 10 inches, for each type, color, pattern, and surface finish, with one sample applied to core material and specified edge material applied to one edge. 1.4 INFORMATIONAL SUBMITTALS A. Qualification Data: For Installer and fabricator. B. Product Certificates: For each type of product. C. Woodwork Quality Standard Compliance Certificates: AWI Quality Certification Program certificates. THE KENT 12 36 23 - THE KENT Issue Date 05.09.18 PLASTIC-LAMINATE CLAD COUNTERTOPS THE KENT D. Evaluation Reports: For fire-retardant-treated materials, from ICC-ES. 1.5 QUALITY ASSURANCE A. Fabricator Qualifications: Shop that employs skilled workers who custom fabricate products similar to those required for this Project and whose products have a record of successful in- service performance. 1. Refer to Specification Section 01 40 00 “Quality Requirements.” B. Installer Qualifications: 1. Refer to Specification Section 01 40 00 “Quality Requirements.” C. Testing Agency Qualifications: For testing agency providing classification marking for fire- retardant-treated material, an inspection agency acceptable to authorities having jurisdiction that periodically performs inspections to verify that the material bearing the classification marking is representative of the material tested. 1.6 DELIVERY, STORAGE, AND HANDLING A. Do not deliver countertops until painting and similar operations that could damage countertops have been completed in installation areas. If countertops must be stored in other than installation areas, store only in areas where environmental conditions comply with requirements specified in "Field Conditions" Article. 1.7 FIELD CONDITIONS A. Environmental Limitations: Do not deliver or install countertops until building is enclosed, wet work is complete, and HVAC system is operating and maintaining temperature between 60 and 90 deg F and relative humidity between 25 and 55 percent during the remainder of the construction period. B. Field Measurements: Where countertops are indicated to fit to other construction, verify dimensions of other construction by field measurements before fabrication, and indicate measurements on Shop Drawings. Coordinate fabrication schedule with construction progress to avoid delaying the Work. PART 2 - PRODUCTS 2.1 PLASTIC-LAMINATE COUNTERTOPS A. Quality Standard: Unless otherwise indicated, comply with the "Architectural Woodwork Standards" for grades indicated for construction, installation, and other requirements. 1. Provide labels and certificates from AWI certification program indicating that countertops comply with requirements of grades specified. 2. The Contract Documents contain selections chosen from options in the quality standard and additional requirements beyond those of the quality standard. Comply with those selections and requirements in addition to the quality standard. THE KENT 12 36 23 - THE KENT Issue Date 05.09.18 PLASTIC-LAMINATE CLAD COUNTERTOPS THE KENT B. Grade: Custom. C. High-Pressure Decorative Laminate: NEMA LD 3, Grade HGS. 1. Manufacturers: Subject to compliance with requirements, provide products by the following: Pionite Co. 2. Refer to Finish Legend on Drawings. D. Edge Treatment: As indicated. E. Core Material: Exterior-grade plywood. F. Core Material at Sinks: exterior-grade plywood. G. Core Thickness: 3/4 inch. 1. Build up countertop thickness to 1-1/2 inches at front, back, and ends with additional layers of core material laminated to top. H. Backer Sheet: Provide plastic-laminate backer sheet, NEMA LD 3, Grade BKL, on underside of countertop substrate. 2.2 WOOD MATERIALS A. Wood Products: Provide materials that comply with requirements of referenced quality standard unless otherwise indicated. 1. Wood Moisture Content: 5 to 10 percent. B. Composite Wood and Agrifiber Products: Provide materials that comply with requirements of referenced quality standard for each type of woodwork and quality grade specified unless otherwise indicated. 1. Softwood Plywood: DOC PS 1. 2.3 FIRE-RETARDANT-TREATED MATERIALS A. Fire-Retardant-Treated Materials, General: Where fire-retardant-treated materials are indicated, use materials complying with requirements in this article that are acceptable to authorities having jurisdiction and with fire-test-response characteristics specified as determined by testing identical products per test method indicated by a qualified testing agency. 1. Use treated materials that comply with requirements of referenced woodworking standard. Do not use materials that are warped, discolored, or otherwise defective. 2. Use fire-retardant-treatment formulations that do not bleed through or otherwise adversely affect finishes. Do not use colorants to distinguish treated materials from untreated materials. 3. Identify fire-retardant-treated materials with appropriate classification marking of qualified testing agency in the form of removable paper label or imprint on surfaces that will be concealed from view after installation. B. Fire-Retardant-Treated Lumber and Plywood: Products with a flame-spread index of 25 or less when tested according to ASTM E 84, with no evidence of significant progressive combustion when the test is extended an additional 20 minutes, and with the flame front not extending more than 10.5 feet beyond the centerline of the burners at any time during the test. THE KENT 12 36 23 - THE KENT Issue Date 05.09.18 PLASTIC-LAMINATE CLAD COUNTERTOPS THE KENT 1. Kiln dry lumber and plywood after treatment to a maximum moisture content of 19 and 15 percent, respectively. 2. For items indicated to receive a stained or natural finish, use organic resin chemical formulation. 3. Mill lumber after treatment within limits set for wood removal that do not affect listed fire- test-response characteristics, using a woodworking shop certified by testing and inspecting agency. 4. Mill lumber before treatment and implement special procedures during treatment and drying processes that prevent lumber from warping and developing discolorations from drying sticks or other causes, marring, and other defects affecting appearance of treated woodwork. 2.4 MISCELLANEOUS MATERIALS A. Adhesives: Do not use adhesives that contain urea formaldehyde. B. Adhesives: Use adhesives that meet the testing and product requirements of the California Department of Public Health's "Standard Method for the Testing and Evaluation of Volatile Organic Chemical Emissions from Indoor Sources Using Environmental Chambers." C. Installation Adhesive: 1. Adhesives shall have a VOC content of 70 g/L or less. 2.5 FABRICATION A. Sand fire-retardant-treated wood lightly to remove raised grain on exposed surfaces before fabrication. B. Fabricate countertops to dimensions, profiles, and details indicated. Provide front and end overhang of 1 inch over base cabinets. Ease edges to radius indicated for the following: 1. Solid-Wood (Lumber) Members: 1/16 inch unless otherwise indicated. 2. Notify Architect seven days in advance of the dates and times woodwork fabrication will be complete. 3. Trial fit assemblies at fabrication shop that cannot be shipped completely assembled. Install dowels, screws, bolted connectors, and other fastening devices that can be removed after trial fitting. Verify that various parts fit as intended and check measurements of assemblies against field measurements before disassembling for shipment. C. Shop cut openings to maximum extent possible to receive appliances, plumbing fixtures, electrical work, and similar items. Locate openings accurately and use templates or roughing-in diagrams to produce accurately sized and shaped openings. Sand edges of cutouts to remove splinters and burrs. 1. Seal edges of openings in countertops with a coat of varnish. THE KENT 12 36 23 - THE KENT Issue Date 05.09.18 PLASTIC-LAMINATE CLAD COUNTERTOPS THE KENT PART 3 - EXECUTION 3.1 PREPARATION A. Before installation, condition countertops to average prevailing humidity conditions in installation areas. B. Before installing countertops, examine shop-fabricated work for completion and complete work as required, including removal of packing and back priming. 3.2 INSTALLATION A. Grade: Install countertops to comply with same grade as item to be installed. B. Assemble countertops and complete fabrication at Project site to the extent that it was not completed in the shop. 1. Provide cutouts for appliances, plumbing fixtures, electrical work, and similar items. 2. Seal edges of cutouts by saturating with varnish. C. Field Jointing: Where possible, make in the same manner as shop jointing, using dowels, splines, adhesives, and fasteners recommended by manufacturer. Prepare edges to be joined in shop so Project-site processing of top and edge surfaces is not required. Locate field joints where shown on Shop Drawings. 1. Secure field joints in plastic-laminate countertops with concealed clamping devices located within 6 inches of front and back edges and at intervals not exceeding 24 inches. Tighten according to manufacturer's written instructions to exert a constant, heavy- clamping pressure at joints. D. Install countertops level, plumb, true, and straight. Shim as required with concealed shims. Install level and plumb to a tolerance of 1/8 inch in 96 inches. E. Scribe and cut countertops to fit adjoining work, refinish cut surfaces, and repair damaged finish at cuts. F. Fire-Retardant-Treated Wood: Handle, store, and install fire-retardant-treated wood to comply with chemical treatment manufacturer's written instructions, including those for adhesives used to install woodwork. G. Countertops: Anchor securely by screwing through corner blocks of base cabinets or other supports into underside of countertop. 1. Install countertops with no more than 1/8 inch in 96-inch sag, bow, or other variation from a straight line. 2. Secure backsplashes to tops with concealed metal brackets at 16 inches o.c. and to walls with adhesive. 3. Seal junctures of tops, splashes, and walls with mildew-resistant silicone sealant or another permanently elastic sealing compound recommended by countertop material manufacturer. THE KENT 12 36 23 - THE KENT Issue Date 05.09.18 PLASTIC-LAMINATE CLAD COUNTERTOPS THE KENT 3.3 ADJUSTING AND CLEANING A. Repair damaged and defective countertops, where possible, to eliminate functional and visual defects; where not possible to repair, replace woodwork. Adjust joinery for uniform appearance. B. Clean countertops on exposed and semi-exposed surfaces. Touch up shop-applied finishes to restore damaged or soiled areas. END OF SECTION 12 36 23