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HomeMy WebLinkAbout09 97 01 High Performance Coatings-Aliphatic PolyurethaneTHE KENT 09 97 01 - THE KENT Issue Date 05.09.18 HIGH-PERFORMANCE COATINGS THE KENT SECTION 09 97 01 – HIGH PERFORMANCE COATINGS - ALIPHATIC POLYURETHANE 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 aliphatic polyurethane coatings for use on exterior steel. B. Related Requirements: 1. Division 5 Section "Pipe and Tube Railings" for shop priming structural steel. 2. Section 05 73 00 “Decorative Metal Railings” for paint application. 3. Section 09 91 00 “Painting.” 1.3 PRE-INSTALLATION MEETINGS A. Pre-installation Conference: Conduct conference at Project site. 1.4 SUBMITTALS A Product Data: For each coating system indicated. 1. Samples for Verification: For each color and material to be applied, with texture to simulate actual conditions, on representative sample of the actual substrate. 1.5 INFORMATIONAL SUBMITTALS A. Qualification Data: For Applicator. 1.6 EXTRA MATERIALS A. Furnish extra materials, from the same product run, that match products installed and that are packaged with protective covering for storage and identified with labels describing contents. B. High Performance Coating Materials: In quantities equal to 5 percent of quantity applied for each material and color indicated, but no less than 1 gal. or 1 case as appropriate. 1.7 QUALITY ASSURANCE THE KENT 09 97 01 - THE KENT Issue Date 05.09.18 HIGH-PERFORMANCE COATINGS THE KENT A. Installer Qualifications: Engage an experienced applicator who has completed high- performance coating system applications similar in material and extent to those indicated for Project and whose work has a record of successful in-service performance. B. Refer to Specification Section 01 40 00 “Quality Requirements.” C. Source Limitations: Obtain primers and undercoat materials for each coating system from the same manufacturer as the finish coats. D. Benchmark Samples (Mockups): Provide a full-coat benchmark finish sample of each type of coating and substrate required. Comply with procedures specified in PDCA P5. Duplicate finish of approval sample submittals. 1. Architect will select one surface to represent surfaces and conditions for application of coating. 2. Final approval of colors will be from benchmark samples. 1.8 DELIVERY, STORAGE, AND HANDLING A. Deliver materials to Project site in manufacturer’s original, unopened packages and containers. B. Store materials not in use in tightly covered containers in a well-ventilated area at a minimum ambient temperature of 45 deg F. Maintain containers used in storage in a clean condition, free of foreign materials and residue. C. Protect materials from freezing. Keep storage area neat and orderly. Remove oily rags and waste daily. Take necessary measures to ensure that workers and work areas are protected from fire and health hazards resulting from handling, mixing and applying coatings. 1.9 PROJECT CONDITIONS A. Apply coatings only when temperature of surfaces to be coated and surrounding air temperatures are between 45 and 95 deg F. B. Do not apply coatings in snow, mist, fog or rain or when relative humidity exceeds 85 per cent, or at temperatures less than 5 deg F above dew point. Do not apply coatings to damp or wet surfaces. PART 2 - PRODUCTS 2.1 MANUFACTURERS A. Manufacturers: Subject to compliance with requirements, provide products by one of the following: 1. Carboline. 2. DuPont Company, High Performance Coatings (DuPont). 3. Tnemec Company, Inc. (Tnemec). THE KENT 09 97 01 - THE KENT Issue Date 05.09.18 HIGH-PERFORMANCE COATINGS THE KENT 4. ICI Dulux Paints; Devoe Coatings (ICI). 5. Moore: Benjamin Moore and Co. (Moore). 6. Pittsburgh Paint; PPG Industries, Inc. (PPG). 7. Rust-Oleum Corporation (R-O). 8. Sherwin Williams; Industrial and Marine Coatings (S-W). 2.2 COATINGS MATERIALS, GENERAL A. Material Compatibility: Provide primers, undercoats and finish coat materials that are compatible with one another and substrates indicated under conditions of service and application, as demonstrated by manufacturer based on testing and field experience. B. Material Quality: Provide manufacturer’s highest grade of the various high- performance coatings specified. Materials not displaying manufacturer’s product identification are not acceptable. C. VOC Classification: Provide high-performance coating materials, including primers, undercoats and finish coat materials that have a VOC classification of 450g/L or less. 2.3 COLORS A. Colors: As indicated on Drawings by manufacturer’s designations. 2.4 EXTERIOR HIGH-PERFORMANCE COATING SYSTEMS SCHEDULE A. General: Provide the following aliphatic polyurethane coating systems using individual products comparable with product specifications listed in this section. B. Ferrous Metal: Provide the following finish systems over exterior ferrous metal surfaces: 1. Semi-Gloss Finish: One coat over an intermediate coat and a primer. Coating applicator shall verify that sand or shot blast preparation has been executed at shop on same day as primer. a. Primer: Zinc-rich primer applied at spreading rate recommended by manufacturer. 1) Tnemec: Series 394 PerimaPrime Zinc. 2) S-W: Corothane I GalvaPac B65G11. b. Intermediate Coat: Epoxy applied at spreading rate recommended by manufacturer to achieve a dry film thickness of 3.0 to 8.0 mils. 1) Tnemec: Series 66 Hi-Build Epoxoline II Polyamide Epoxy. 2) S-W: Macropoxy 646 FC Epoxy B58W610. c. Topcoat (Semi-Gloss): Aliphatic polyurethane enamel applied at spreading rate recommended by manufacturer to achieve a dry film thickness of 1.5 to 4.0 mils. 1) Tnemec: Series 1075 Endura-Shield. 2) S-W: Acrolon 218 HS Polyurethane Semi-Gloss B65W651. THE KENT 09 97 01 - THE KENT Issue Date 05.09.18 HIGH-PERFORMANCE COATINGS THE KENT PART 3 - EXECUTION 3.1 EXAMINATION A. Examine substrates and conditions, with Applicator present, for compliance with requirements for compliance with coating application requirements. 1. Apply coatings only after unsatisfactory conditions have been corrected and surfaces to receive coatings are thoroughly dry. 2. Star of application is construed as Applicator’s acceptance of surfaces within that area. B. Coordination of Work: Review “Structural Steel” Specification Section to verify shop application of primer. Ensure compatibility of total systems for various substrates. Upon request, furnish information on characteristics of specified finish materials to ensure compatible primers. 1. Notify Architect about anticipated problems before using the coatings specified over substrates primed by others. C. Prepare written report, endorsed by Installer, listing conditions detrimental to performance. D. Proceed with installation only after unsatisfactory conditions have been corrected. 3.2 PREPARATION A. General: Remove plates, machined surfaces and similar item already in place that are not to be located. If removal is impractical or impossible because of size or weight of item, provide surface applied protection before surface preparation and coating. 1. After completing coating operations, reinstall items that were removed; use workers skilled in the trades involved. B. Cleaning: Before applying high performance coatings, clean substrates of substances that could impair bond of coatings. Remove oil and grease before cleaning. 1. Schedule cleaning and coating application so dust and other contaminates from cleaning process will not fall on wet, newly coated surfaces. C. Steel Substrates: Remove dust and loose mill scale. 1. Clean using methods recommended in writing by coating manufacturer. 2. Blast clean according to SSPC-SP 6/NACE No.3, “Commercial Blast Cleaning” and prime same day. D. Material Preparation: Carefully mix and prepare coating materials according to manufacturer’s written instructions. 1. Maintain containers used in mixing and applying coatings in a clean condition, free of foreign materials and residue. 2. Stir materials before applying to produce a mixture of uniform density. Stir as required during application. Do not stir surface film into the material. Remove film and, if necessary, strain coating material before using. 3. Use only the type of thinners approved by the manufacturer and only within recommended limits. THE KENT 09 97 01 - THE KENT Issue Date 05.09.18 HIGH-PERFORMANCE COATINGS THE KENT E. Tint each undercoat a lighter shade to facilitate identification of each coat if multiple coats of the same material are to be applied. Tint undercoats to match color of finish coat, but provide sufficient difference in shade of undercoats to distinguish each separate coat. 3.3 APPLICATION A. General : Apply high performance coatings to manufacturer’s written instructions. 1. Use applicators and techniques best suited for the material being applied. 2. Do not apply high performance coatings over dirt, rust, scale, grease, moisture, scuffed surfaces or conditions detrimental to forming a durable coating film. 3. Provide finish coats compatible with primers used. B. Scheduling Coating : Apply first coat to surfaces that have been cleaned, pretreated or otherwise prepared for coating as soon as practicable after preparation and before subsequent surface deterioration. 1. The number of coats and film thickness required is the same regardless of application method. a. Shop prime metal surfaces on same day of surface preparation. b. Do not apply additional coats until previous coat has cured as recommended by manufacturer. c. Where manufacturer’s written instructions require sanding, sand between applications to produce a smooth, even surface. d. Allow sufficient time between successive coats to permit proper drying. Do not recoat surfaces until coating has dried, so it feels firm, does not deform or feel sticky under moderate thumb pressure, and application of another coat does not cause undercoat to lift or lose adhesion. C. If under-coats or other conditions show thorough final coat, apply additional coats until cured film has a unifrom coating finish, color, and appearance. Give special attention to edges, corners, crevices, welds, exposed fasteners, and similar surfaces to ensure that they receive a dry film thickness equivalent to that of flat surfaces. 1. Application Procedures : Apply coatings by brush, roller, spray or other applicators according to manufacturer’s written instructions. D. Minimum Coating Thickness : Apply each material no thinner than manufacturer’s recommended spreading rate. Provide total dry film thickness of the entire system as recommended by manufacturer. 1. Prime Coats : Shop prime on same day as preparation. a. Recoat primed and sealed substrates if there is evidence of suction spots or unsealed areas in first coat, to ensure a finish coat with no burn through or other defects caused by insufficient sealing. E. Completed Work : Match approved samples for color, texture and coverage. Remove, refinish or recoat work that does not comply with specified requirements. 3.4 CLEANING THE KENT 09 97 01 - THE KENT Issue Date 05.09.18 HIGH-PERFORMANCE COATINGS THE KENT A. Cleanup: At end of each workday, remove rubbish, empty cans, rags and other discarded materials from Project site. 1. After completing coating application clean spattered surfaces. Remove spattered coatings by washing, scraping or other methods. Do not scratch or damage adjacent surfaces. 3.5 PROTECTION A. Protect work of other trades, whether being coated or not, against damage from coating operation. Correct damage by cleaning, repairing, replacing and recoating, as approved by Architect, and leave in an undamaged condition. 1. Provide “Wet Paint” signs to protect newly coated finishes. After completing coating operations, remove temporary protective wrappings provided by others to protect their work. 2. At completion of construction activities of other trades, touch up and restore damaged or defaced coated surfaces. Comply with procedures specified in PDCA P1. END OF SECTION 09 97 01