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Orange County Facility Renovations <br />Hillsborough, NC <br /> <br />Smith Sinnett PAINTING <br />2020046/2020047/2020048/2020049/2020055 09 91 00 - 7 <br />3.3 PREPARATION OF EXISTING SURFACES <br /> <br />A. Existing Painted Gypsum Board: Touch up all holes, dents, etc with drywall patching components <br />approved by the paint manufacturer for the intended purpose. Scrape all loose paint off. Sand and taper <br />smooth all rough spots and blemishes. Provide same number of finish c <br />B. Existing Ferrous Metals to Remain: Grind and sand all loose and peeling paint. Sand and feather all <br />edges smooth. Prime bare metal before painting <br />C. Materials Preparation: Carefully mix and prepare paint materials according to manufacturer's directions. <br />1. Maintain containers used in mixing and applying paint in a clean condition, free of foreign <br />materials and residue. <br />2. Stir material before application to produce a mixture of uniform density; stir as required during <br />application. Do not stir surface film into material. Remove film and, if necessary, strain <br />material before using. <br />3. Use only thinners approved by the paint manufacturer and only within recommended limits. <br />D. Tinting: Tint each undercoat a lighter shade to facilitate identification of each coat where multiple <br />coats of the same material are applied. Tint undercoats to match the color of the finish coat but provide <br />sufficient differences in shade of undercoats to distinguish each separate coat. <br /> <br /> <br />3.4 APPLICATION <br /> <br />A. General: Apply paint according to manufacturer's directions. Use applicators and techniques best <br />suited for substrate and type of material being applied. <br />1. Do not paint over dirt, rust, scale, grease, moisture, scuffed surfaces, or conditions detrimental <br />to formation of a durable paint film. <br />2. Paint colors, surface treatments, and finishes are indicated in the schedules. <br />3. Provide finish coats that are compatible with primers used. <br />4. The number of coats and the film thickness required are the same regardless of the application <br />method. Do not apply succeeding coats until the previous coat has cured as recommended by <br />the manufacturer. Sand between applications where sanding is required to produce a smooth <br />even surface according to the manufacturer's directions. <br />5. Apply additional coats if undercoats, stains, or other conditions show through final coat of paint <br />until paint film is of uniform finish, color, and appearance. Give special attention to ensure that <br />surfaces, including edges, corners, crevices, welds, and exposed fasteners, receive a dry film <br />thickness equivalent to that of flat surfaces. <br />6. The term exposed surfaces includes areas visible when permanent or built-in fixtures, convector <br />covers, covers for finned tube radiation, grilles, and similar components are in place. Extend <br />coatings in these areas, as required, to maintain the system integrity and provide desired <br />protection. <br />7. Paint surfaces behind movable equipment and furniture the same as similar exposed surfaces. <br />Before the final installation of equipment, paint surfaces behind permanently fixed equipment <br />or furniture with prime coat only. <br />8. Paint interior surfaces of ducts, where visible through registers or grilles, with a flat, non- <br />specular black paint. <br />9. Paint back sides of access panels and removable or hinged covers to match exposed surfaces. <br />10. Finish exterior doors on tops, bottoms, and side edges same as exterior faces. Sand lightly <br />between each succeeding enamel or varnish coat. Omit primer on metal surfaces that have been <br />shop-primed and touch-up painted. <br />B. Scheduling Painting: Apply first coat to surfaces that have been cleaned, pretreated, or otherwise <br />prepared for painting as soon as practicable after preparation and before subsequent surface <br />deterioration. <br />1. Allow sufficient time between successive coats to permit proper drying. Do not recoat until <br />paint has dried to where it feels firm, does not deform or feel sticky under moderate thumb <br />pressure, and where application of another coat of paint does not cause the undercoat to lift or <br />lose adhesion. <br /> <br />DocuSign Envelope ID: 09980A3B-0691-41B4-854D-3865F2287392