09_90_00_Monument_Specialty_Finishes_-_Gilding_0003.pdf

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MONUMENT SPECIALTY FINISHES - GILDING

SECTION 09 90 00 – MONUMENT SPECIALTY FINISHES - GILDING

PART 1 – GENERAL

1.1 GENERAL PROVISIONS

A. Attention is directed to the CONTRACT AND GENERAL CONDITIONS and all Sections within DIVISION 01 - GENERAL REQUIREMENTS, which are hereby made a part of this Section of the Specifications.

1.2 DESCRIPTION

A. The Work of this Section includes all labor, materials, equipment, and services necessary to complete the work of exterior gilding as shown on the Drawings, and/or as specified herein, and as may be required by conditions and authorities having jurisdiction, including, but not limited to, the following:

1. Preparation of the gilded surfaces of the weathervane for re-gilding. Work will include removing all soiling, loose gilding and preparation of the surface to receive the base coat for the gilding.

2. Application of a primer coating, size (adhesive).

3. Application of 23.5 karat gold leaf to the weathervane.

1.3 DEFINITIONS

A. “Paintable surface” is defined as a surface prepared for painting through the removal of all non—intact paint. All painted exterior metal surfaces to be painted shall be scraped and sanded, removing all deteriorated paint and gilding to sound metal. All surfaces shall be inspected and approved by the Architect or Restoration Consultant prior to the application of primer and paint.

B. “Non-intact paint” is defined as all paint that is loose, peeling, flaking, cracking, alligatoring or otherwise not completely adhered to the bare substrate, as described in this Section.

1.4 QUALITY ASSURANCE

A. Gilding Specialist: Award gilding for the bell tower dome to a firm regularly engaged in exterior gilding on historic buildings that can demonstrate to Owner’s satisfaction that, within previous five years, it has successfully performed and completed in a timely manner at least three projects involving gilding of elements similar in scope and type to work required on this Project involving buildings designated as Landmarks by local governmental authorities, buildings listed in the National Register of Historic Places, or buildings listed in a State Register of Historic Places under the direction of preservation authorities.

1. Foreman: Gilding work shall be directly supervised by a full-time foreman with experience equal to or greater than that required of Gilding Specialist.

Foreman shall be on site daily for duration of work of this Section. Same foreman shall remain on Project throughout work unless his performance

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is deemed unacceptable.

2. Gilders: Gilding for restoration shall be carried out by a steady crew of skilled gilders who are thoroughly experienced with materials and methods specified and have a minimum of three years’ experience gilding. In acceptance or rejection of exterior painting, no allowance will be made for workers’ incompetence or lack of skill.

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

C. Standards: Work of this Section shall comply with all applicable requirements and recommendations of latest editions of standards listed below, which shall have the same force and effect as if written out in full herein. In each case in which there is a conflict between requirements of standards, requirements of laws, codes, and regulations, and requirements of this Section, the most stringent or restrictive requirement shall govern.

1. Painting and Decorating Contractors of America (PDCA). Applicable standards and recommendations.

2. Society for Protective Coatings (SSPC)

a. PA-1, Paint Application Specification No. 1, Shop, Field and Maintenance Painting.

b. SP-1, Solvent Cleaning.

3. Reference standards for gilding to be established by quality control panels, which have been approved by the Contracting Officer and which shall serve as standards during the entire restoration process.

D. Single-Source Responsibility: Provide all coats of painting systems, including primers, sizes and gold as a coating system produced by the same manufacturer to ensure compatibility.

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. Submission of bid shall be acknowledgment that bidder is thoroughly familiar with Project scope and site conditions.

F. Access for Observation and Approvals: Provide Contracting Officer access on a continuing basis to locations on which quality control panels are being carried out, on which work is ongoing, and where work has been completed to allow for observation and approvals.

1.5 SUBMITTALS

A. General: Submit the following in compliance with the requirements of the Contract Documents. Revise and resubmit each item as required to obtain Contracting Officer’s approval.

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B. Product Data: Submit complete product data including material description, physical properties, recommendations for application and use, test reports and certificates verifying that product complies with specified requirements, and Material Safety Data Sheets (MSDS).

1.6 MOCK-UPS

A. General: Before beginning gilding restoration work, prepare mock-ups to provide standards for work of this Section. Do not proceed with gilding restoration until Contracting Officer has approved mock-ups.

B. Mock-up: Prepare a mock-up on a similar copper substrate of the full gilding treatment for review and approval.

1.7 DELIVERY, STORAGE, AND HANDLING

A. Deliver materials to the site in manufacturer’s original, unopened containers or packaging. All materials shall be legibly labeled with name, type and manufacturer. Obtain Contracting Officer’s approval before delivering such materials.

B. Provide suitable spaces for the storage of materials under this Section. These spaces will have proper ventilation. Oil- or solvent-soaked rags, waste or other potentially combustible materials shall be placed in sealed metal containers and be removed from the premises daily. Every precaution shall be taken to prevent damage by fire.

C. Handling: Materials shall be stored without unpacking except as required for inspection by the Contracting Officer. Unpack material as it is ready to be used.

Protect adjacent areas from paint spillage.

1.8 PROJECT CONDITIONS

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

B. Protection of Building: Protect building elements and finishes from damage or deterioration caused by work of this Section using all means necessary. Repair any damage to materials or finishes to Contracting Officer’s satisfaction at no additional cost.

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

2. Do not use torches, heat guns, or any other heat generating equipment to remove paint.

3. Store oily rags in closed metal containers. Remove oily rags and waste daily.

C. Protection of Site and Surroundings: Protect site, landscape features, public rights of way, motor vehicles, and other surrounding elements from damage and

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deterioration resulting from work of this Section.

D. Coordination: Coordinate work of this Section with other work to ensure proper completion of all work.

1. Schedule gilding so that work will not be harmed or marred by airborne dust or debris from other construction work.

2. Schedule work so that the application of the leaf will not be affected by excessive wind or during rainy weather.

E. Contract Drawings: Drawings are two-dimensional representations of three-dimensional objects and do not show all surfaces. Perform work on all surfaces of projections, reveals, returns, ornament, and other elements and surfaces associated with areas on which work is indicated.

PART 2 – PRODUCTS

2.1 GENERAL REQUIREMENTS

A. Materials shall conform to the latest edition of reference specifications applicable and specified herein and to applicable codes and requirements of local authorities having jurisdiction.

B. Materials shall conform to governing regulations regarding the content of volatile organic compounds (VOC).

C. Work that is gilded shall be free from defects or blemishes on surfaces exposed to view that will show after the finish coat of paint is applied. Any materials which are in any way defective and not up to specifications for quality and grade, or otherwise not in proper conditions shall be rejected.

D. Gilding materials shall be the top line (finest quality) products of one of the manufacturers listed in this section.

E. Follow manufacturer’s instructions regarding preparation of surfaces and application.

F. Before purchasing materials for the work, the Contractor shall submit to the Contracting Officer a list of the products he/she proposes to use, and the list shall be satisfactory to the Contracting Officer and approved by him/her before commitment for materials is made.

2.2 GOLD LEAF

A. Dark Gold Leaf: German Monarch Fine Gold, 24 kt. [Monarch is not now producing gold leaf], available from Talas, 330 Morgan Ave., Brooklyn, 11211 (212-219-0735), or approved equal.

B. Light Gold Leaf: German Monarch Lemon Gold Leaf, 18 kt. [Monarch is not now producing gold leaf], available from Talas, 330 Morgan Ave., Brooklyn, 11211 (212-219-0735), or approved equal.

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C. Gold Leaf: 23.5 karat leaf available from Sepp Leaf Products, 381 Park Avenue, South, New York, NY 10016 – 212-683-2840, or approved equal.

2.3 SIZE (LEAF ADHESIVE)

A. Oil Size: LeFranc Mixtion Oil Size, as available from Talas, 330 Morgan Ave., Brooklyn, 11211 (212-219-0735), or approved equal.

B. Exterior size for the installation of 23.5 karat gold leaf available from Sepp Leaf Products, 381 Park Avenue, South, New York, NY 10016 – 212-683-2840, or approved equal.

2.4 SOLVENTS

A. Mineral Spirits, 100% pure.

2.5 PAINT REMOVERS FOR METAL

A. Paint Stripper: Standard thixotropic, solvent-based or methylene chloride-based paint stripper such as: Safest Stripper, Premium or Extra Strength Paint Stripper manufactured by 3M, 3M Center, St. Paul, MN 55144-1000 (800) 364-3577; 859 or 509 Paint Stripper, as manufactured by ProSoCo, Inc., 3741 Greenway Circle, Lawrence, KS (800) 255-4255.

1. Follow the manufacturer’s directions and neutralize any strippers as required.

PART 3 – EXECUTION

3.1 GENERAL

A. No gilding shall be done when the air is dust-laden nor when weather and temperature conditions are unsuitable based upon product manufacturer’s recommendations.

3.2 PREPARATION OF SURFACES FOR GILDING

A. Protection shall be provided to adequately protect adjacent work and materials.

B. All loose gilding and paint shall be removed from the metal surfaces by hand sanding. All surfaces shall be inspected and approved by the Contracting Officer prior to the application of the priming base paint.

C. Clean all metal surfaces prior to painting with a solution of non-ionic detergent.

Remove all grime, grease, dirt, and other substances that may interfere with proper adhesion of priming base paint. Allow surfaces to dry completely.

3.3 APPLICATION OF LEAF

A. Apply leaf only to sound, smooth surfaces. Clean surfaces to remove all traces of dust, dirt, grease, or other foreign matter that might affect the adherence and appearance of the leaf.

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B. Apply approved priming base paint. Allow to dry thoroughly.

C. Apply size to area to receive gold leaf so that size will set at rate with which the leaf can be applied.

D. Apply leaf to cover surfaces completely. Trim leaf cleanly.

1. Gaps between sheets and visible overlaps are unacceptable.

2. Visible scratches and variations in color are unacceptable.

3. Leaf pattern shall follow the existing pattern of the approved mock-up.

3.4 FINAL CLEANING

A. Upon completion of the work all containers and materials related to this work shall be removed from the site. The entire job site shall be left clean.

B. Provide adequate protection and other precautions required for the remainder of the construction period to ensure that gilded work will not be damaged at the time of Substantial Completion.

C. Correction of Work: The Contracting Officer will determine that any work of this Section does not comply with specified requirements and/or does not equal or exceed minimum standard established by approved quality control panel, repair or replace work and replace following requirements of this Section to Contracting Officer’s satisfaction.

END OF SECTION 09 90 00

End of Section 09 90 00