Attachment 3. Specifications.pdf

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127EAW23Q0019 - Los Prietos Residence Repairs - Los Padres National Forest
Solicitation number
127EAW23Q0019
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This document provides specifications for re-roofing structures on the Los Padres National Forest. It includes specifications for demolishing existing roofing materials, installing new composition shingles, flashing, gutters, downspouts and other roofing components. It also specifies preparation of surfaces, cleaning requirements, and exterior painting. The solicitation number listed is 127EAW23Q0019 for repairs to the Los Prietos Residence on the Los Padres National Forest, with the agency identified as the Department of Agriculture Forest Service. Products and services required include composition shingles, underlayment, fasteners, starter course, ridge shingles, asphalt plastic cement, sheet metal flashing, gutters, downspouts, gravel stops, joint sealants, and exterior paint.

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LOS PADRES 2012 FOREST-WIDE DIVISION 01 SECTION 01600-1

RE-ROOFING

INDEX OF SPECIFICATIONS

DIVISION 1: GENERAL REQUIREMENTS

Section 01700 - Project Cleanup

DIVISION 2: SITEWORK

Section 02050 - Demolition

DIVISION 6: WOOD AND PLASTICS

Section 06201 - Carpentry

DIVISION 7: THERMAL AND MOISTURE PROTECTION

Section 07335 - Composition Shingles

Section 07600 - Flashing and Sheet Metal

Section 07710 - Manufactured Roof Specialities

Section 07920 - Joint Sealants

DIVISION 9: FINISHES

Section 09912 - Painting

LOS PADRES 2012 FOREST-WIDE DIVISION 01 SECTION 01700-1

SECTION 01700

PROJECT CLEANUP

PART 1 - GENERAL

1.1 SCOPE: This work consists of the cleanup required during construction and the final cleanup at each jobsite. The Contractor shall, at all times during the progress of the work, keep the building and work site clear of all rubbish, material scraps, and construction debris.

PART 2 - PRODUCTS

2.1 All cleaning materials and equipment used shall be selected and employed with care to avoid scratching, marring, defacing, staining or discoloring the surfaces cleaned.

PART 3 - EXECUTION

3.1 CLEANUP DURING CONSTRUCTION

A. Cleanup shall be performed by the Contractor as required, to prevent accidents to personnel and to protect all work in-place. Construction cleanup shall consist of the removal of all dirt, trash, scrap, debris, and excess materials from any floor space or walking surface that may cause the tripping or sliding of workers, ladders, or equipment. Cleanup shall be daily.

B. Immediately prior to the Contractor's move to the next jobsite, final cleanup shall be performed.

C. All debris and unused material shall be removed from the site. All debris shall be disposed of off National Forest land in accordance with local regulations. Site shall be restored to as near its original condition as possible.

D. Burning of material is not allowed.

3.2 QUALITY OF CLEANUP

A. In addition to the normal "broom clean" requirements, the exposed surfaces of the following materials shall be cleaned as listed below:

1. Painted Surfaces: Remove marks, stains, fingerprints and dirt.

2. Roof: Remove dirt and debris.

3. Hardware: Clean.

END OF SECTION

LOS PADRES 2012 FOREST-WIDE DIVISION 02 SECTION 02050-1

SECTION 02050

DEMOLITION

1.1 SCOPE

A. The work consists of the demolition necessary and required for re-roofing. The work includes, but is not limited to, the following items:

1. Removal of existing roofing material.

2. Removal of roof sheathing, facia, etc., and all nailing devices prior to installing new roofing material.

3. Removal of flashing as needed.

PART 2 - PRODUCTS (Not Applicable)

3.1 Prior to starting demolition work, the Contractor shall make an inspection with the

Contracting Officer to determine the physical condition of adjacent improvements scheduled to remain. The Contractor shall exercise caution to minimize disturbance to existing improvements.

3.2 Demolition work shall be performed in such a manner as to ensure the safety of persons working or visiting the area.

3.3 Debris resulting from the demolition portion of this project shall be removed from the jobsite as it accumulates in accordance with Section 01700, Project Cleanup. Keep all pavement areas adjacent to and leading from the site, clean and free of debris at all times.

LOS PADRES 2012 FOREST-WIDE DIVISION 06 SECTION 06201-1

SECTION 06201

CARPENTRY

1.1 SCOPE: Perform all work necessary or required for re-roofing. Such work includes, but is not necessarily limited to, repair of substrate roof areas, facia, eaves, etc. as may be needed to accomplish project requirements.

1.2 Product Handling: Stack all lumber to insure proper ventilation. Cover all lumber, millwork, and other materials to protect from moisture. Do not store or install any millwork in any part of the building until concrete or similar work is dry.

1.3 Grade Marks: All lumber and structural panels shall be grade stamped.

1.4 Measurement and Payment: - No separate payment will be made for work included under this section. Payment for this work will be included in the contract unit price for the building.

2.1 Materials: All lumber shall be seasoned, surfaced four sides (S4S), except where shown rough-sawn on drawings, shall not exceed a moisture content of 19 percent for (A), (B), (C) and (D) below and 15 percent for all others, and shall not be less than the following grades:

A. Sill Plates: Sill plates and any other framing in contact with concrete or masonry shall be Redwood, construction heart or better as graded by the Redwood Inspection Service or Fir, foundation grade (Pressure Treated) lumber.

B. Joists and Planks, Beams and Stringers, Posts and Timbers: Douglas Fir No. 2 and better grade, as graded by the Western Wood Products Association or West Coast

Lumber Inspection Bureau, or equal.

C. Light Framing: Douglas Fir, Standard and better grade, as graded by Western Wood

Products Association or West Coast Lumber Inspection Bureau, or equal.

D. Pressure Treated Framing: Redwood lumber or FDN grade Douglas Fir as designated by American Wood Preservers Association or American Wood Preservers Bureau.

E. Roof Sheathing: APA Rated sheathing of the span rating or panel thickness shown on the drawings and as graded by The Engineered Wood Association (formerly American

Plywood Association). Use of the term "plywood" on the drawings does not exclude the use of other panels with equivalent span ratings.

LOS PADRES 2012 FOREST-WIDE DIVISION 06 SECTION 06201-2

3.1 Nailing: Nailing shall conform with the requirements of the International Building Code, unless otherwise specified.

3.2 Rough Carpentry

A. All framing shall be accurately cut and constructed plumb, straight, and true to lines and dimensions shown. No cutting and boring of joists and beams shall be done without permission from the Contracting Officer. Set joists and beams with crown edges up. Space studs 16" O.C., unless shown otherwise. Double studs at openings and triple studs at intersections of walls.

B. Roof Sheathing: The roof sheathing and sub-floor shall be installed with the panel laid perpendicular to the rafters, end joints staggered, and nailed at each crossing and end.

Butted end joints shall occur only over bearing points.

C. Eaves, Facia, Etc.: Shall be installed to conform with industry standards and shall match the existing.

LOS PADRES 2012 FOREST-WIDE DIVISION 07 SECTION 07335-1

SECTION 07335

COMPOSITION SHINGLES

1.1 SCOPE: Perform all work necessary and required for re-roofing structures. Such work includes, but is not necessarily limited to, providing and installing composition shingles as specified herein.

1.2 SUBMITTALS

A. Shingles shall match the color of the existing shingles. Contractor shall submit samples for color selection by the Contracting Officer. Samples for verification purposes to be in the form of two full-size units. Contractor shall provide installation instructions.

1.3 QUALITY ASSURANCE

A. Fire Performance Characteristics: Provide products that are identical to those tested for the specified fire performance characteristics by UL or other testing and inspecting organizations acceptable to authorities having jurisdiction. Identify products with appropriate markings of applicable testing and inspecting organization.

1. Fire Resistance Ratings: As indicated by reference to design designations in UL

"Fire Resistance Directory."

1.4 DELIVERY, STORAGE, AND HANDLING

A. Deliver materials to Project site in manufacturer's unopened bundles or containers with labels intact.

B. Handle and store materials at Project site to prevent water damage, staining, or other physical damage. Store roll goods on end. Comply with manufacturer's recommendations for job site storage, handling, and protection.

1.5 PROJECT CONDITIONS

A. Substrate: All loose, curled or lifted shingles and all loose and protruding nails should be removed or cut away. All badly worn edging strips should be removed and replaced with new ones. Before applying new roofing materials, old surface shall be swept clear of all loose debris.

B. Weather Conditions: Proceed with work only when existing and forecasted weather conditions will permit work to be installed in compliance with manufacturer's recommendations and when substrate is completely dry.

LOS PADRES 2012 FOREST-WIDE DIVISION 07 SECTION 07335-2

PART 2 - PRODUCT

2.1 Composition Shingles: Composition shingles shall be Underwriters' Laboratory, Inc., rated class "A", wind resistant. They shall carry a minimum of 20-year limited warranty and be

3-tab self-sealing with self-aligning notches on the ends. Shingle color shall be selected by the Contracting Officer from samples submitted by the Contractor.

2.2 Underlayment: Underlayment shall be #15 asphalt saturated felt.

2.3 Fasteners: Fasteners shall be galvanized, large head, roofing nails of sufficient length and holding power (20 pounds minimum) to properly secure the shingles.

2.4 Starter Course: A starter course shall be a composition shingle laid with tabs up the slope.

The first course will be laid over this starter course with tabs ends down as will each course thereafter.

2.5 Ridge Shingles: Manufacturer's standard factory precut units to match shingles.

2.6 Asphalt Plastic Cement: Non-asbestos asphalt cement complying with ASTM D 4586, designed for trowel application.

3.1 Surface Preparation: All surfaces shall be cured, dried, and properly supported for shingle nailing and application.

3.2 Application

A. Shingles shall be applied over two layers of #15 asphalt saturated felt, lapped 19 inches, and exposed 17 inches.

B. Each shingle shall be securely nailed with roofing nails. One nail 1 inch from each end and 1 nail above each of the tab cutouts.

C. All nails to be positioned 1/2 inch above a line even with top of cut-outs.

D. The shingles shall be laid with the ends barely touching each other.

E. All shingles shall be laid with a 5-inch exposure and a 2-inch head lap unless otherwise recommended by the shingle manufacturer's written installation instructions.

F. Application shall be in accordance with the manufacturer's instructions.

LOS PADRES 2012 FOREST-WIDE DIVISION 07 SECTION 07600-1

SECTION 07600

FLASHING AND SHEET METAL

1.1 SCOPE

A. This work consists of replacing any edge and roof-penetration flashing sheet metal, and other accessories as needed to complete re-roofing.

A. Submit shop drawings of sheet metals flashings and trims and color chart for selection of finish.

2.1 SHEET METAL FLASHING AND TRIM MATERIALS

A. Zinc-Coated Steel: Commercial quality with 0.20 percent copper, ASTM A 526 except

ASTM A 527 for lock-forming, G90 hot-dip galvanized, factory baked, enamel finished; 24 gage unless otherwise noted.

2.2 MISCELLANEOUS MATERIALS AND ACCESSORIES:

A. Fasteners: Same metal as flashing/sheet metal or other non-corrosive metal as recommended by sheet manufacturer. Match finish of exposed heads with material being fastened.

B. Elastomeric Sealant: Generic type recommended by manufacturer of metal and fabricator of components being sealed and complying with requirements for joint sealants as specified in Division 7 Section "Joint Sealers."

C. Elastic Flashing Filler: Closed-cell polyethylene or other soft closed-cell material recommended by elastic flashing manufacturer as filler under flashing loops to ensure movement with minimum stress on flashing sheet.

LOS PADRES 2012 FOREST-WIDE DIVISION 07 SECTION 07600-2

3.1 INSTALLATION REQUIREMENTS

A. General: Except as otherwise indicated, comply with manufacturer's installation instructions and recommendations and with SMACNA "Architectural Sheet Metal

Manual." Anchor units of work securely in place by methods indicated, providing for thermal expansion of metal units; conceal fasteners where possible, and set units true to line and level as indicated. Install work with laps, joints, and seams that will be permanently watertight and weather proof.

B. Bed flanges of work in a thick coat of bituminous roofing cement where required for waterproof performance.

3.2 CLEANING AND PROTECTION

A. Clean exposed metal surfaces, removing substances that might cause corrosion of metal or deterioration of finishes.

B. Protection: Contractor shall protect flashings and sheet metal work during construction to ensure that work will be without damage or deterioration other than natural weathering.

LOS PADRES 2012 FOREST-WIDE DIVISION 07 SECTION 07710-1

SECTION 07710

MANUFACTURED ROOF SPECIALTIES

1.1 SUMMARY

A. This Section includes the following:

1. Gravel Stops.

2. Gutters and downspouts.

B. Related Sections:

1. Section 06201 "Carpentry" for wood nailers, curbs, and blocking.

2. Section 07600 "Flashing and Sheet Metal" for sheet metal flashing and trim.

3. Section 07920 “Joint Sealants” for field-applied sealants between roof specialties and adjacent materials

A. Product Data: For each product indicated.

B. Shop Drawings: Include plans, elevations, sections, details, and attachments to other

Work.

C. Samples: For each exposed finish.

PART 2 - PRODUCT

2.1 METALS

A. Aluminum: Alloy and temper as recommended by manufacturer for intended use and finish indicated with not less than the strength and durability characteristics of alloy and temper indicated.

1. Extrusions: ASTM B 221 (ASTM B 221M), 6063-T5 alloy and temper.

2. Sheet: ASTM B 209 (ASTM B 209M).

2.2 GRAVEL STOPS

A. General: Of metal and in shapes and sizes indicated, with shop-mitered and welded corners. Include water dams formed from at least 0.028-inch- (0.7-mm-) thick, galvanized steel sheet; anchor plates; cleats or other attachment devices; concealed

LOS PADRES 2012 FOREST-WIDE DIVISION 07 SECTION 07710-2

splice plates; and trim and other accessories indicated or required for complete installation, with no exposed fasteners.

B. Extruded-Aluminum Gravel Stops: Minimum 0.060 inch thick, unless otherwise indicated.

C. Formed-Aluminum Gravel Stops: Minimum 0.050 inch thick, unless otherwise indicated

2.3 GUTTERS AND DOWNSPOUTS

A. General: Of metal and in shapes and sizes indicated, with mitered and welded corners. Include hangers or other attachment devices; screens; end plates; and trim and other accessories indicated or required for complete installation.

1. Additional Features: Provide items below fabricated from same metal as gutters and downspouts

a. Downspout starters (fascia sump) with downspout starter hole.

B. Manufacturers: Subject to compliance with requirements, provide products by the following manufacturer or approved equal.

1. Eastern Metals, Inc. – 679 Dawson Drive, Newark DE 19713, (800)220-7886

C. Gutters: Manufactured in uniform section lengths not exceeding 12 feet, with matching corner units, ends, outlet tubes, and other accessories. Elevate back edge at least 1 inch above front edge. Furnish flat-stock gutter straps, gutter brackets, expansion joints, and expansion-joint covers fabricated from same metal as gutters.

1. Fabricate from the following exposed metal.

b. Formed Aluminum: 0.050 inch thick minimum

c. Extruded Aluminum: 0.060 inch thick minimum

2. Corners: Factory mitered and continuously welded.

D. Downspouts: Downspout style, cross section and elbow type to match existing and be, manufactured from the following exposed metal. Furnish with metal hangers, from same material as downspouts, and anchors.

1. Formed Aluminum: 0.050 inch thick.

2. Extruded Aluminum: 0.060 inch thick.

LOS PADRES 2012 FOREST-WIDE DIVISION 07 SECTION 07710-3

E. Aluminum Finish: Baked Enamel, Kynar or approved equal.

1. Color – To be selected from manufacturer’s full range.

3.1 INSTALLATION

A. General: Install roof specialties according to manufacturer’s written instructions.

Anchor roof specialties securely in place, with provisions for thermal and structural movement. Use fasteners, solder, protective coatings, separators, sealants, and other miscellaneous items as required to complete roof-specialty systems.

1. Install roof specialties level, plumb, true to line and elevation; with limited oil-canning and without warping, jogs in alignment, buckling, or tool marks.

2. Provide uniform, neat seams with minimum exposure of solder and sealant.

3. Install roof specialties to fit substrates and to result in watertight performance.

Verify shapes and dimensions of surfaces to be covered before manufacture.

4. Torch cutting of roof specialties is not permitted.

5. Do not use graphite pencils to mark metal surfaces.

B. Seal joints with butyl sealant as required by roofing-specialty manufacturer.

C. Seal joints as required for watertight construction. Place sealant to be completely concealed in joint. Do not install sealants at temperatures below 40 deg F.

D. Soldered joints: Clean surfaces to be soldered, removing oils and foreign matter. Pre-tin edges of sheets to be soldered to a width of 1-1/2 inches except, reduce pre-tinning where pre-tinned surface would show in completed work. Do not use torches for soldering. Heat surfaces to receive solder and flow solder into joint. Fill joint completely. Completely remove flux and spatter from exposed surfaces.

3.2 ROOF EDGE DRAINAGE SYSTEM (GUTTER) INSTALLATION

A. General: Install components to produce a complete roof-edge drainage system according to manufacturer’s written instructions. Coordinate installation of roof perimeter flashing with installation of roof-edge drainage system.

B. Gutters: Join and seal gutter lengths. Allow for thermal expansion. Attach gutters to firmly anchored gutter supports spaced per manufacturer’s instructions. Attach ends with rivets and seal with sealant or solder to make watertight. Slope to downspouts.

LOS PADRES 2012 FOREST-WIDE DIVISION 07 SECTION 07710-4

1. Install gutter with expansion joints at locations to allow controlled expansion for movement of metal components and in a manner sufficient to prevent water leakage, deformation, or damage. Install expansion joint caps.

C. Downspouts: Join sections with manufacturer’s standard joints. Provide hangers with fasteners designed to hold downspouts securely to walls and 1 inch away from wall;

locate fasteners at top and bottom and at approximately 60 inches on center.

1. Provide elbows at base of downspout to direct water away from building.

D. Cleaning and Protection:

1. Clean exposed metal surfaces of substances that interfere with uniform oxidation and weathering.

2. Clean and neutralize flux materials. Clean off excess solder and sealants

3. Remove temporary protective coverings and strippable films as roof specialties are installed. On completion of installation, clean finished surfaces including removing unused fasteners, metal filings, pop rivet stems, and pieces of flashing. Maintain roof specialties in a clean condition during construction.

4. Replace roof specialties that have been damaged or that cannot be successfully repaired by finish touchup or similar minor repair procedures.

LOS PADRES2012 FOREST-WIDE DIVISION 07 SECTION 07920-1

SECTION 07920

JOINT SEALANTS

1.1 SUMMARY:

A. This Section includes joint sealants for flashing and sheet metal for re-roofing.

1.2 PERFORMANCE REQUIREMENTS:

A. Provide elastomeric joint sealants that establish and maintain watertight and airtight continuous joint seals without staining or deteriorating joint substrates.

1.3 SUBMITTALS:

A. Product Data: Submit copies of all manufacturers’ instructions for the particular materials to be used for approval prior to installation.

1.4 PROJECT 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.

2. When joint substrates are wet.

3. Where joint widths are less than those allowed by joint-sealant manufacturer for applications indicated.

4. Contaminants capable of interfering with adhesion have not yet been removed from joint substrates.

PART 2 – PRODUCTS

1.1 ELASTOMERIC JOINT SEALANTS:

A. Shall comply with ASTM C 920 and other requirements indicated for each liquid-applied chemically curing sealant specified, including those referencing ASTM C 920 classifications for type, grade, class, and uses related to exposure and joint substrates.

LOS PADRES2012 FOREST-WIDE DIVISION 07 SECTION 07920-2

PART 3 – EXECUTION

3.1 EXAMINATION:

A. Examine joints indicated to receive joint sealants for compliance with requirements for joint configuration, installation tolerances, and other conditions affecting joint-sealant performance.

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.

3.3 INSTALLATION OF JOINT SEALANTS:

A. General: 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.

3.4 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.

3.5 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 and remove damaged or deteriorated joint sealants immediately so installations with repaired areas are indistinguishable from original work.

LOS PADRES2012 FOREST-WIDE DIVISION 09 SECTION 09912-1

SECTION 09912

PAINTING

1.1 SUMMARY

A. This Section includes surface preparation and field painting of exposed exterior items and surfaces.

A. Product Data: For each product indicated.

B. Samples: For each type of finish-coat material indicated.

1.3 QUALITY ASSURANCE

A. Single Source Responsibility: Provide primers and other undercoat paint produced by same manufacturer as finish coats. Use only thinners approved by paint manufacturers, use only within recommended limits.

1.4 PROJECT CONDITIONS

A. Store materials not in use in tightly covered containers in a well-ventilated area at a minimum ambient temperature of 45 deg F. Maintain storage containers in a clean condition, free of foreign materials and residue.

B. Apply waterborne paints only when temperatures of surfaces to be painted and surrounding air are between 50 and 90 deg F.

C. Apply solvent-thinned paints only when temperatures of surfaces to be painted and surrounding air are between 45 and 95 deg F.

D. Do not apply paint in snow, rain, fog, or mist; or when relative humidity exceeds 85 percent; or at temperatures less than 5 deg F above the dew point; or to damp or wet surfaces.

LOS PADRES2012 FOREST-WIDE DIVISION 09 SECTION 09912-2

2.1 PAINT MATERIALS, GENERAL

A. Material Compatibility: Provide block fillers, primers, and finish-coat materials that are compatible with one another and with the substrates indicated under conditions of service and application, as demonstrated by manufacturer based on testing and field experience.

B. Material Quality: Provide manufacturer's best-quality paint material of the various coating types specified that are factory formulated and recommended by manufacturer for application indicated. Paint-material containers not displaying manufacturer's product identification will not be acceptable.

C. Colors: Paint Color to match existing. Contractor shall submit paint color to

Contracting Officer (CO) for approval.

2.2 PREPARATORY COATS

A. Exterior Primer: Latex-based primer of finish coat manufacturer and recommended in writing by manufacturer for use with finish coat and on substrate indicated.

2.3 EXTERIOR FINISH COATS

A. Exterior Finish Coat shall be Exterior Low-Luster Acrylic Paint. Contractor shall submit paint manufacturer and paint specs to Contracting Officer (CO) for approval.

3.1 APPLICATION

A. Comply with procedures specified in PDCA P4 for inspection and acceptance of surfaces to be painted.

B. Coordination of Work: Review other Sections in which primers are provided to ensure compatibility of the total system for various substrates. On request, furnish information on characteristics of finish materials to ensure use of compatible primers.

C. Remove hardware and hardware accessories, plates, machined surfaces, lighting fixtures, and similar items already installed that are not to be painted. If removal is impractical or impossible because of size or weight of the item, provide surface-applied protection before surface preparation and painting.

LOS PADRES2012 FOREST-WIDE DIVISION 09 SECTION 09912-3

1. After completing painting operations in each space or area, reinstall items removed using workers skilled in the trades involved.

D. Surface Preparation: Clean and prepare surfaces to be painted according to manufacturers written instructions for each particular substrate condition and as specified.

1. Provide barrier coats over incompatible primers or remove and reprime.

2. Wood: Clean surfaces of dirt, oil, and other foreign substances with scrapers, mineral spirits, and sandpaper, as required. Sand surfaces exposed to view smooth and dust off.

a. Scrape and clean small, dry, seasoned knots, and apply a thin coat of white shellac or other recommended knot sealer before applying primer. After priming, fill holes and imperfections in finish surfaces with putty or plastic wood filler. Sand smooth when dried.

b. Prime, stain, or seal wood to be painted immediately on delivery. Prime edges, ends, faces, undersides, and back sides of wood, including cabinets, counters, cases, and paneling.

E. Material Preparation:

1. Maintain containers used in mixing and applying paint in a clean condition, free of foreign materials and residue.

2. Stir material before application to produce a mixture of uniform density. Stir as required during application. Do not stir surface film into material. If necessary, remove surface film and strain material before using.

F. Scheduling Painting: Apply first coat to surfaces that have been cleaned, pretreated, or otherwise prepared for painting as soon as practicable after preparation and before subsequent surface deterioration.

1. Omit primer over metal surfaces that have been shop primed and touchup painted.

2. If undercoats, stains, or other conditions show through final coat of paint, apply additional coats until paint film is of uniform finish, color, and appearance.

G. Application Procedures: Apply paints and coatings by brush, roller, spray, or other applicators according to manufacturer's written instructions.

H. Minimum Coating Thickness: Apply paint materials no thinner than manufacturer's recommended spreading rate. Provide total dry film thickness of the entire system as recommended by manufacturer.

LOS PADRES2012 FOREST-WIDE DIVISION 09 SECTION 09912-4

I. Mechanical and Electrical Work: Painting of mechanical and electrical work is limited to items exposed in equipment rooms and occupied spaces.

J. Block Fillers: Apply block fillers to concrete masonry block at a rate to ensure complete coverage with pores filled.

K. Prime Coats: Before applying finish coats, apply a prime coat, as recommended by manufacturer, to material that is required to be painted or finished and that has not been prime coated by others. Recoat primed and sealed surfaces where evidence of suction spots or unsealed areas in first coat appears, to ensure a finish coat with no burn-through or other defects due to insufficient sealing.

L. Pigmented (Opaque) Finishes: Completely cover surfaces as necessary to provide a smooth, opaque surface of uniform finish, color, appearance, and coverage. Cloudiness, spotting, holidays, laps, brush marks, runs, sags, ropiness, or other surface imperfections will not be acceptable.

3.2 CLEANING AND PROTECTING

A. At the end of each workday, remove empty cans, rags, rubbish, and other discarded paint materials from Project site.

B. Protect work of other trades, whether being painted or not, against damage from painting.

C. After work of other trades is complete, touch up and restore damaged or defaced painted surfaces. Comply with procedures specified in PDCA P1.

3.3 EXTERIOR PAINT SCHEDULE

A. Smooth Wood:

1. Acrylic Finish: Two finish coats over a primer.

a. Primer: Exterior wood primer for acrylic enamels (two coats).

b. Finish Coats: Exterior low-luster acrylic paint.

LOS PADRES2012 FOREST-WIDE DIVISION 09 SECTION 09912-5

B. Wood Trim:

1. Acrylic Finish: Two finish coats over a primer.

a. Primer: Exterior wood primer for acrylic enamels (two coats).

b. Finish Coats: Exterior low-luster acrylic paint

C. Plywood:

1. Acrylic Finish: Two finish coats over a primer.

a. Primer: Exterior wood primer for acrylic enamels (two coats).

b. Finish Coats: Exterior low-luster acrylic paint

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