36C10F18R0473-00002013.pdf

JONATHAN M. WAINWRIGHT SECTION 08 52 00

MEMORIAL VA MEDICAL CENTER WOOD WINDOW RESTORATION

BUILDING 86 RENOVATION

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PART 1 - GENERAL

1.1 DESCRIPTION

A. Scope of work: Includes removal and salvage on all existing wood windows with reassamblage and reinstallation on the East Building elevation for a complete historical expression of the significance of the building.

B. Restoration/Refurbishment and replacement of Existing Windows to include sills, jambs, brick moldings, trims, and sashes, hardware, and associated work for a complete historical installation.

C. Provide all labor, materials, equipment, and services required to complete wood window restoration as specified herein, and required by existing conditions and Historical Authorities having jurisdiction.

D. Wood window restoration may include, but is not limited to, the following:

1. Restore damaged and inoperable wood window sash while maintaining current profiles.

2. Restore existing and provide new balance window hardware at all operable sash to accommodate use.

3. Replace all sash cord.

4. Restore existing window hardware and provide new in kind window hardware where existing hardware is missing or is too damaged or deteriorated to be restorable.

5. Restore all window trim disturbed for work of this Section to sound condition and existing appearance.

6. Prime, paint and finish all wood elements as necessary to match original finishes.

7. Replace cracked, broken or missing glass to match existing.

8. Remove all deteriorated putty and replace with new.

9. Consolidate and repair deteriorated wood sills, framing members and sash rails and stiles.

10. Replace all broken or deteriorated parting strips and muntins, in kind.

11. Reinstall repaired window sash.

12. Application of borate wood preservative.

E.. Intent: That repairs/replacement will maximize the retention of historic fabric while making the windows weather resistant for long-term use and serviceable for cyclical maintenance.

F. Types:

1. Double Hung Multi-lite windows.

2. Fixed single and multi-lite windows.

G. Glazing: Restoration glass 1/8" minimum float (window) glass in compliance with current building safety codes to match existing.

1.2 DEFINITIONS

A. Accessories: Mullions, staff beads, casings, closures, trim, moldings, panning systems, sub-sills, clips anchors, fasteners, weather-stripping, insect screens, mechanical operators and other necessary components required for fabrication and installation of window units.

1.3 RELATED WORK

A. Section 02 41 00, DEMOLITION B. Section 02 83 13.13, LEAD BASED PAINT REMOVAL AND DISPOSAL C. Section 03 30 00, CAST-IN-PLACE CONCRETE D. Section 04 01 02, MASONRY RESTORATION E. Section 09 06 00, FINISHES F. Section 09 90 00, PAINTING G. Section 09 91 10, EXTERIOR PAINTING

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1.4 PROJECT CONDITIONS

A. After demolition and removal of existing entry door(s) and window(s) Contractor shall examine carefully the rough opening of new door(s) installation.

B. Structural Engineer shall view all headers and jambs. Identify any or all structural concerns.

C. All steel lintels and/or jambs shall be clean and prepped before applying protective sealed finish.

1.5 DELIVERY, STORAGE AND HANDLING

A. Protect window parts from damage during removal, handling and construction operations before, during and after installation.

B. Protect all window parts and accessories.

C. Do not lay building materials or equipment on window parts and accessories.

1.6 QUALITY ASSURANCE

A. Window Restoration Specialist: Work must be performed by a firm having not less than 5 years successful experience in comparable window restoration projects and employing personnel skilled in the restoration processes and operations indicated.

B. Provide list of recently completed window restoration projects, including project name, location, names owner and Architect.

C. Wood window restoration shall be carried out by a steady crew of skilled craftspeople who are thoroughly experienced with materials and methods specified.

D. Laws, Codes, and Regulations: All work of this Section shall comply with all applicable federal, state, and local laws, codes and regulations.

E. Knowledge of Site: Bidders shall visit site prior to bid and carefully examine Project scope and conditions that may affect proper execution of work of this Section and determine or verify dimensions and quantities. Contractor's submission of bid shall be acknowledgment that s/he is thoroughly familiar with Project scope and site conditions.

F. Access for Inspection, Documentation and Approvals: Provide Resident Engineer access on a regular basis to all locations on which mockups are being carried out, on which work is ongoing, and where work has been completed to allow for inspections, documentation and approvals. Provide means of access and safety precautions required to facilitate inspections and approvals.

1.7 REFERENCES

A. ‘Window Preservation Standards Collaborative’: Window preservations Standards Collaborative, 2013.

B. ‘Preservation Brief 9’: The repair of Historic Wooden Windows, National Park Service.

C. ‘Historic Wood Windows’: A tip sheet from the National Trust for Historic Preservation.

D. ‘The Secretary of Interior’s Standards of Rehabilitation and Guidelines for Rehabilitation and

Reconstruction Historic Buildings’:U.S. Department of the Interior, National Park Service, Washington, D.C.1995 Ed.

E. ‘Wood-Epoxy Repairs for Exterior Woodwork’: John Leeke, Preservations Consultant, Copyrighted 2007.

1.8 MOCK UP

A. Provide mock-up of sash restoration for approval prior proceeding of restoration/repair to include:

1. Removal and repair: Labeling, paint striping, glazing putty removal, Dutchman repair, component replacement and epoxy repair.

2. New work/replacement: Glazing putty installation, glass replacement, finish painting, hardware and weather stripping.

3. Include glass programmed for replacement.

1.9 SUBMITTAL

A. Submit in accordance with Section 01 33 23, SHOP DRAWINGS, PRODUCT DATA, and SAMPLES.

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B. Product Literature: Manufacturer's published technical data for each product to be used in work of this Section including recommendations for application and use, test reports and certificates verifying that product complies with specified requirements, and Material Safety Data Sheets (MSDS).

C. Documentation: Documentation in the form of high-resolution (1 megabyte minimum) JPEG images on CDROM showing the existing condition of all elements of windows to be removed for work of this Section, all elements adjacent to elements that are to be removed, and all other window elements that will be in any way affected by work of this Section. Show overall trim and details of all damage or deterioration that might be attributed to damage resulting from work of this Section.

D. Wood Treatment Data: Chemical treatment manufacturer's instructions for handling, storage, installation, and finishing treated materials if applicable.

E. All new hardware that shall match existing historical hardware, to be reviewed and approved by resident Engineer.

1.10 FIELD CONDITIONS

A. Protection of Persons: Take necessary precautions to protect all persons, whether engaged in work of this Section or not from all hazards of any kind associated with the work.

B. Protection of Window Opening: After removal of the sash, all window openings shall be closed with plywood or acrylic panels fitted to each individual window and secured by non-destructive anchoring system. The panel shall be adequately weathertight and not permit any moisture to enter the building.

C. Protection of Building: Protect building elements anti finishes from damage or deterioration caused by work of this Section. Repair any damage to materials or finishes to Resident Engineers satisfaction at no additional cost

1. Take all necessary precautions to prevent fire and spread of fire.

2. Take all necessary precautions to protect building elements and finishes from damage by precipitation during work.

D. Coordination: Coordinate work of this Section with work specified in other sections to ensure proper completion of the Work.

1.11 PAINT CONTAINING LEAD

A. General: perform all work that disturbs lead-containing paint (LCP), handle all material that involves lead-containing paint, and transport and dispose of all lead containing paint and residue in compliance with all applicable federal, state, and local laws and regulations for identification, removal, labeling, handling, containerization, transportation, and disposal of lead-containing material including, but not limited to, those referenced herein.

B. All lead paint found on any all wood components shall be stripped prior to rehabilitation of the component.

C. US. Department of Labor OSHA Regulations: Including but not limited to: Title 29, Code of Federal Regulations (CFR) Section 1926.62: "Lead Exposure in Construction" and Title 29, CFR Section 1910.1200:

"Hazard Communication Standard."

D. US. Environmental Protection Agency (USEPA) Regulations: Including but not limited to: Title 40 CFR Part 262:

E. US. Department of Transportation (USDOT) Regulations: Including but not limited to: 49 CFR Parts 172,173,174,175, 177, 178, 179, and 180.

PART 2- PRODUCTS

2.0 BASIS OF DESIGN

A. Manufacturer/supplier for replacement sashes if there are not enough re-usable historic sashes available for re-use.

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Parrett Manufacturing, Inc.

810 2nd Avenue East P.O. Box 440 Dorchester, WI 54425 800.541.9527

715.654.6555 Fax

B. Approved equal manufactures shall consider if:

1. Have a 5 year history of historic replication of matching existing profiles and operational hardware.

2. Energy Star member.

3. Proof of projects that have met LEED certification.

2.1 MATERIALS

A. Grade and Quality: Materials shall conform to requirements of this Section and shall be new, free from defects, and of recent manufacture.

B. Manufacturer's Instructions: Comply with material manufacturers' instructions for use of products (including surface preparation, mixing, applying, drying, etc.). In case of conflict with requirements of this Section, the more stringent requirements shall govern.

2.2 WOOD

A. Lumber shall be of sound stock, solid wood without finger joints or other joints within members, thoroughly seasoned, and kiln-dried to a moisture content not exceeding 8 percent

B. Wood shall be free from defects or blemishes on surfaces exposed to view that will show after paints and finishes have been applied. Materials that do not comply with specifications for quality and grade, are in any way defective, or are otherwise not in proper condition will be rejected.

C. Wood for New Sash as necessary, Other New Elements, and Repairs of Existing Elements shall match profile and grade of existing windows in species, quality, cut, and grain pattern in kind.

D. Utilization of old growth salvaged wood from previous doors and windows – of the same species – will be allowed for use in Dutchman repairs.

E. Preservative treatment shall be used for new wood after machining.

2. 3 ADHESIVES

A. Adhesive for Dutchman Repairs, Member Replacement, and Fabrication of New Sash (epoxy resin glue designed for use with wood).

1. West System as manufactured by Gougeon Brothers, Inc.

105 Resin and 206 Slow Hardener or approved equivalent 706 Martin Street, Bay City, Michigan 48706 .

Tel-888-377-6738 or 989-671-4079

2. Abatron, Inc.

5501 95th Avenue, Kenosha, WI 531244 Tel-800-445-1754 Fax-262-653-2019 www.abaton.com

2.4 FASTENERS FOR CONSTRUCTION OF WOOD SASH

A. General: All fasteners for construction of new sash shall be stainless steel or nonferrous metal of appropriate size and configuration for use intended.

2.5 HARDWARE AND ACCESSORIES

A. General: Provide each restored window with full complement of hardware and fasteners matching original windows. New hardware shall be reviewed and approved by resident Engineer to insure match to existing historic hardware.

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B. Use salvaged, restored existing hardware insofar as possible and new hardware to match existing hardware where hardware is missing or existing hardware is damaged or deteriorated so as to be unrestorable.

1. Restored Existing Hardware: Restore all existing hardware to be reused following requirements of

Article 3.11 "Restoration of Existing Historic Hardware," below.

2. New Hardware: Provide new hardware and fasteners to match existing hardware and fasteners in all respects.

C. Sash Lifts: Restore any existing sash lifts insofar as possible and new lifts to match existing sash lifts in material, configuration, size, and finish where existing sash lifts are missing or damaged so as to be non-restorable.

D. Sash Locks: Restore any existing sash locks insofar as possible and new sash locks to match existing sash locks in material, configuration, size, and finish where existing sash locks are missing or damaged so as to be non-restorable.

E. Sash Pulleys: Clean, lubricate and install new sash pulleys. Replace pulleys if necessary to operate the windows with sash chains.

F. Sash Cord: Replace all cords with minimum breaking strain capacity of350 kg.

G. Sash Weights: Ensure that weights allow full operation of each and allow sash to be balanced at any position in which it is placed. Add weights to existing sash weights or replace existing sash weights with new heavier weights to balance if necessary.

H. Screws for Attaching Restored Existing Hardware: Clean, salvage existing screws insofar as possible.

Where screws are missing or damaged so as to be unsalvageable, provide new screws to match existing screws in material, size, and configuration.

I. Screws for Attaching Replacement Hardware: New screws matching screws in existing hardware.

J. Weather Stripping in compliance with AAMA 701/702: Secured in extruded ports; double rows on sash perimeters: one pile conforming to AAMA 701-04 in meeting rail, one EPDM bulb seal in bottom sash lift rail in contact with exterior frame sill, and pile with polypropylene center fin in remaining locations.

H. Weather Stripping Manufacture

1. Malta & Caradco

2. Kerf Frame Weatherstripping

3. Accurate Metal Weatherstirp Co., Inc.

2. 6 PAINTING AND FINISHING MATERIALS

A General: Paint shall be of premium quality and match existing color exactly unless otherwise specified and shall comply with requirements of contract document Primer shall be either oil-based or 100% acrylic and finish paint shall be 100% acrylic.

B. Glazing Putty: Putty is to be best quality pure linseed or soybean oil from manufacture, basis of design Sarco.

2. 7 HARDWARE RESTORATION MATERIALS

A. Non-metallic Cleaning Pads: Scotch-Brite pads, extra fine, manufactured by 3M Co., or approved equal.

B. Wadding Cloth: "Never-Dull Magic Wadding Polish," manufactured by The George Basch Co., Inc., 19

Hanse Avenue, P.O. Box 188, Freeport, NY 11520, or approved equal.

C. Paste Wax for Cold Application: White or clear paste wax, mixtures of microcrystalline wax, carnuba wax, and mild solvent, in paste form, such as Trewax clear, or Butcher's Bowling Alley Paste Wax available from White Diamond Co., Marlboro, MA. Do not use emulsion-type waxes or amber-tinted waxes.

D. Thinner: Mineral spirits or turpentine.

E. Lacquer: Clear, non-yellowing, acrylic emulsion, water-based coating, formulated with corrosion inhibitor benzotriazole, such as #11650 Eco-Borne clear lacquer as manufactured by G.J. Nikolas & Co., Inc., 2800 Washington Blvd., Bellwood, IL. 60104 (708) 544-0320, or approved equal.

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2.8 FABRICATION OF NEW SASH

A. Coordinate dimensions with actual measurements of window openings and adjacent construction to match in kind.

B. Fabricate components to match originals in kind.

C. Join moldings to match construction of original sash exactly.

D. Machine sash elements to receive glazing panels.

E. Machine sash elements of movable sash to receive weather-stripping, where appropriate and hardware.

2.9 INSECT SCREENS

A. Insect Screens: Standard.

1. Compliance: ASTM D 3656 and SMA 1201.

2. Screen Wire: Aluminum, 18 x 16 mesh.

3. Set in aluminum frame fitted to inside of window.

4. Complete with necessary hardware.

5. Screen Frame Finish: Match existing.

2.10 GLAZING

A. Manufacturer/supplier: Bendheim Corporate 61 Willett St.

Passaic, NJ 07055 800.221.7379

471.1640 Fax

B. Approved equal manufactures shall consider if:

1. Glazing product utilizes a large percentage, approximately 40%, of post-consumer glass recycled from the municipal waste stream.

2. Utilizes advanced oxygen-fueled cast glass furnace producing ultra-clean-burning oxygen-fuel mix equaling reduced nitrogen oxide emissions by a factor of 5 when compared to conventional air-fuel-burning furnaces.

3. Specialized cooling ponds contain grass-eating carp, eliminating the need for chemical algaecides.

4. Electrical filters reducing particulates in waste gasses generated by the glass melting process.

5. Past performance matching glazing equal to the needs of this project.

2.11 STEEL LINTELS/JAMB REINFORCEMENT

A. Clean and prepare existing steel of paint and rust by hand or power wire brushing or disk sanding with aluminum oxide paper.

B. Brush off all small particles of loose rust and dust.

1. Use soft bristle brush

2. Scrub surfaces with detergent-and-water solution, then thoroughly rinse with clean water.

C. After cleaning – free from rust and aging blemishes – apply metal primer to provide the bond between final finish and metal.

D. Apply 2 coats (minimum) of high quality exterior grade paint. Refer to Section 09 91 00: Painting.

2.12 PRESERVATIVES

A. Wood Preservative: Bora-Care boron base concentrated wood preservative.

B. Manufacturer/supplier: Abatron, Inc.

5501 95th Ave.

Kenosha, WI 53144

Tel-800-445-1754 Fax 262-653-2019

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PART 3-EXECUTION

3.1 SAFETY

A. Protection: Protect people, adjoining building surfaces, collections and landscape elements, et al from injury resulting from window restoration work.

1. Erect temporary protection over pedestrian walkways and at those points of entry and exits that must remain operational during restoration.

3.2 INSPECTION AND DOCUMENTATION

A. Examine the areas and conditions where window restoration is to be executed. Take all necessary field measurements.

B. General: Document all elements of windows to be restored, all elements adjacent to elements that are to be removed, and all other window elements that will be in any way affected by work. Show overall window elements and details of all damage or deterioration that might be considered as resulting from work. Key all notes to photographs to, clearly identify portions of existing elements included in each photograph.

3.3 REMOVALS

A. General: Remove all window components that require removal for restoration or for proper installation.

1. To minimize breakage, paint lines at the edges of window stops and parting strips must be cut/scribed first with a sharp knife before moldings are removed.

2. All nails will be removed by pulling them through the back of the moldings only.

3. Identify and label each component that is to be removed and repaired for reinstallation with window opening designator (in an inconspicuous area –on the jamb side of each sash) using a steel carpenter stamp of size appropriate for reading.

a. Use window number as noted on the construction document floor plans for identification for coordination of each sash in reinstalled in its original opening

4. Remove adjacent elements as required to modify or replace elements of window jambs, heads, and sills that must be altered to accommodate new window sash. Use all care necessary to prevent damage or deterioration of elements removed and elements remaining in place. Restore or replace all elements damaged.

5. Store removed elements in a secure location safe from theft, damage, and deterioration.

6. Protect window openings to prevent water entry or human intrusion.

B. Glass Removal: All glass will be removed to accommodate sash restoration.

1. Label each pane of glass with location and orientation within the sash so that the historic glass can be returned to its original location and orientation. Use painters tape to label glass and consistently label on either interior or exterior to avoid confusion at reinstallation.

2. Remove all face glazing compound from each window sash using steam, infrared heat or other approved method.

3. Cracked glass is only to be replaced. Any replacement of glass in to be ‘like in kind’.

C. Paint Removal: All paint will be removed from sash as needed in order to insure successful adhesion of new paint.

1. All paint removal shall be executed in compliance with all applicable federal, state, and local regulations.

2. Steam or heat will be used to carefully remove the paint while limiting the damage to the wood substrate.

D. Hardware Removal: All hardware will be removedas needed to restore sash and hardware

1. Scribe paint around hardware so that removal does not splinter adjacent wood.

2. Remove paint from hardware so that any screws may be loosened.

3. Tag anti retain all hardware and screws.

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3.4 DUTCHMAN REPAIRS

A. General: Provide dutchman repairs where wood is structurally compromised. Wood repairs will not be made for aesthetic purposes. Dutchman repairs shall provide continuous smooth surfaces matching planes anti profiles of wood members being repaired. Dutchman shall match wood being repaired in species and cut. In wood for clear finish, grain pattern of dutchman shall match grain pattern of wood into which it is inserted.

B. Preparation: Neatly cut out existing opening as required to provide a prismatic void. Wherever possible create voids that will provide mechanical attachments as in dovetails. The amount of wood removed should be minimized but the amount should include all damaged wood and extend just past damaged wood to prevent spread of any fungus contained therein. Cut away area will provide ample glue surface.

C. Dutchman: Cut dutchman to exactly fit void, with exposed portion matching original profile of woodwork anti just slightly proud of original surface. Orient grain of dutchman parallel to grain of element being patched. Where deterioration or loss at end of component requires dutchman repair, use a diagonal scarf joint for end-to-end joint between dutchman and remaining portion of component.

D. Installation: Clean glue surfaces with acetone or denatured alcohol. Insert dutchman using specified adhesive and clamp in place until glue is set. Where clamping is not feasible, use small brads; remove brads and fill holes after adhesive has set.

E. Surfacing: Plane or scrape dutchman to provide smooth continuous surface coplanar with adjacent wood.

Do not damage or alter profile or finish of adjacent wood.

3.5 COMPONENT REPLACEMENT

A. General: Fabricate new components for any components which are deteriorated in entirety and cannot be repaired with Dutchmen and epoxy.

B. In kind replacement: Except as specifically indicated or otherwise, provide replacement elements of same specie with configurations, profiles, dimensions and joinery.

1. Profiles: Remove coatings from profiles of existing elements before recording profiles to produce molding cutters to match existing profiles.

2. Molding Cutters: Cut custom blades as required to match original profiles and label knifes with project code.

C. Machining and Surfacing: Machine and surface all new and replacement wood elements to provide smooth even surfaces without saw marks or plane minks. Wood with surface irregularities, including but not limited to scratches saw marks, and plane knife marks, visible after finish has been applied will be rejected and shall be replaced with properly finished wood elements.

3.6 SASH INSTALLATION

A. General: Install new and restored sash as per contract. At completion of installation, windows shall be complete with all components and without blemished paint and finish coats. All operating sash shall operate smoothly over entire height, and weatherstripping shall provide weatherproof seal.

B. Sash Balances: Install sash with sash chains/cords and weights properly adjusted to allow sash to close securely, open completely to top of track, and remain stationary at any position in track.

C. Sash Hardware: Install any hardware, including sash lifts and sash locks, on restored sash in the same locations as originally. Adjust sash locks for smooth easy operation and firm, secure locking.

D. Wax: Treat unpainted sides of stiles and frame with wax for ease of window operation and wood protection.

E. Weatherstripping: Install weatherstripping following manufacturer's requirements to ensure smooth operation and weathertight closure.

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3.7 WEATHERSTRIPPING

A. Fix upper sash in place, thereby elevating the need for weather stripping.

B. Add metal compression stripping at the jambs of operable sash.3.9 ADJUSTING C. General: Adjust operating sash and hardware to provide a tight fit at contact points and weatherstripping, if specified, and to provide smooth operation and a weathertight closure. Lubricate hardware and moving parts.

3.8 GLAZING

A. General: Re-glaze all window lites using approved pure linseed oil or soybean oil glazing putty. Glazing points shall be used to set glass.

B. Clean glass prior to glazing with non-ammoniated formula before reinstallation.

3.9 STEEL LINTEL/JAMB REINFORCEMENT.

A. Apply primer at manufactures spread rate to specified film thickness.

B. Acrylic latex corrosion inhibitive primer are allowed if not exposed corrosive atmospheric conditions or encased in framing assembly.

C. Apply finish coating per Section 09 06 00, PAINTING.

3.10 ADJUST AND CLEAN

A. Adjust sash and hardware to provide tight fit at contact points, and at weather-stripping for smooth operation and weathertight closure.

B. Clean all surfaces promptly after installation of windows, exercising care to avoid damage to coatings and finishes.

C. Remove excess glazing and sealant compounds, dirt, and other substances.

D. Clean glass promptly after installation of windows. Remove glazing and sealant compound, dirt and other substances.

E. Except when a window is being adjusted or tested, keep locked in the closed position during the progress of work on the project.

3.11 PAINTING

A. General: Paint and finish new and restored elements of frames and trim to match original finishes and/or as specified by Historic New England contract documents. Prime and paint sash in controlled environment according to manufacturer’s instructions.

B. Prepare substrates for repairs by hand sanding with 100git paper. The sides of the stiles (unpainted edges) of double hung windows do not need to be sanded unless special conditions require it.

C. After substrate is sanded, vacuum all surfaces and remove remaining dust with barely damp dust-free cloth. Allow surfaces to dry completely before priming.

D. Apply water repellant wood preservative to all surfaces of the sash.

E. Apply one coat of alkyd or 1000/0 acrylic primer to all surfaces of the sash including putty beds (shellac based paint cannot be applied over glazing). On all window sashes, extend primer and paint 1/16" onto glass to seal glazing. If sash is operable, it is important to paint bottom edge to prevent water intrusion.

F. Lightly sand surfaces after the primer has dried and clean of all dust.

G. Apply two topcoats of premium quality 100% acrylic paint to all surfaces. Color to match existing exactly.

H. Immediately after installation touch-up any disturbed areas of paint.

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3.12 RESTORATION OF EXISTING HARDWARE

A. General: Remove historic sash hardware from existing sash to be replaced and remove sash pulleys from jambs. Store hardware in plastic bags or containers identified with sash number to ensure that each unit of hardware is reinstalled in its original location.

B. Remove lacquer coatings with acetone or lacquer thinner.

C. Strip paint coatings by clipping in chemical paint stripper.

D. After removal of paint and other coatings, thoroughly rinse in appropriate solvent and wipe dry with soft cloths.

E. Replacement Parts: Provide replacement parts, including operating parts and fasteners, matching original parts in metal and alloy, configuration, size, and finish for all missing and damaged parts.

F. Remove scratches and buff surfaces using like metal cleaning and polishing pads and polishing compound as necessary. Do not scratch finish with abrasive pads or wire brushes.

0. Provide lacquer finish on all copper alloy elements.

1. Preparation

a. Clean and degrease metal using solvent and burnishing with handheld bronze wool to provide surface free of dirt, dust, grease, oil, and other contaminants. Do not damage metal finish. If a surface is handled or contaminated, repeat cleaning and degreasing process.

b. Drying: Ensure that metal surface is completely dry.

c. Environment: Ensure that environment is dust-free before applying lacquer.

2. Lacquer Application: Build up coatings to produce 2-mil dry film thickness. Spray lacquer using "hot spray," "airless spray," or "electrostatic spray" methods.

3. Curing: Cure lacquer coatings by "baking" in shop at elevated temperatures following manufacturer's recommendations.

4. Waxing: Protect baked lacquer coatings by hand application of two coats of hard paste wax.

H. Lubricate operating parts.

I. Store units in protective packaging.

1. Provide all missing fasteners for hardware. Fasteners must match all visual aspects of existing fasteners.

3.13 PROTECTION

A. Protect windows from damage or deterioration until time of substantial completion.

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