099623_graffiti-resistant_coating_add02.pdf

General Services Administration Bid Set Phillip Burton FB Infrastructure Project 450 Golden Gate Ave., San Francisco, CA Bldg. No. CA-0154ZZ

SENSITIVE BUT UNCLASSIFIED (SBU) GRAFFITI-RESISTANT COATING

PROPERTY OF UNITED STATES GOVERNMENT 099623 - 1

FOR OFFICIAL USE ONLY ADDENDUM 02 – 05/06/16

Do not remove this notice. Properly destroy or return documents when no longer needed.

SECTION 099623 – GRAFFITI-RESISTANT COATING, Addendum 02

PART 1 - GENERAL

1.1 RELATED DOCUMENTS

A. The Government is providing the references included in this sub-section for information purposes only and is not intended to provide a comprehensive, all-inclusive list of any and all potentially relevant portions of the Contract Documents. Drawings and general provisions of the Contract and other Division 01 Specification Sections, apply to this Section.

1.2 SUMMARY

A. Section includes:

1. Graffiti-resistant coating applied to existing and new exterior stonework.

1.3 SUBMITTALS

A. Materials: Submit copies of manufacturer's data of each product specified.

B. Samples: Submit 24-inch square samples of coating assembly applied to stone samples. Coat 1/2 of each sample and identify the coated side.

C. Certification: Submit duplicate copies of manufacturer's affidavit with each shipment of materials delivered to the jobsite certifying that material furnished complies with specified requirements.

1.4 QUALITY ASSURANCE

A. Applicator qualifications: Applicator shall be a firm, with not less than 3 years of experience in application of graffiti coating systems on substrates similar to those of this project. Firm shall be approved in writing by the coating manufacturer.

B. Mockup:

1. Apply coating system on stone cladding on the North Wall at a location to be determined by the Contracting Officer, approximately 10 ft. high x full structural bay width.

2. Demonstrate graffiti removal on the mockup panel in the Government’s and Contracting

Officer’s presence. Graffiti materials shall include paint, indelible ink markers, lipstick and other materials to be selected.

3. Obtain Government’s and Contracting Officer’s approval of each mockup panel before proceeding further.

4. Mockup shall be applied and approved prior to construction of the new air intake shafts.

5. Approved mockups will be used as a standard for the Project, and if acceptable to the

Contracting Officer may remain a part of the work of this Section.

Bldg. No. CA-0154ZZ

SENSITIVE BUT UNCLASSIFIED (SBU) GRAFFITI-RESISTANT COATING

PROPERTY OF UNITED STATES GOVERNMENT 099623 - 2

FOR OFFICIAL USE ONLY ADDENDUM 02 – 05/06/16

Do not remove this notice. Properly destroy or return documents when no longer needed.

1.5 HANDLING

A. Deliver coating materials in sealed original labeled containers, bearing manufacturer's name, type of material, brand name, lot number, brand code, coverage, surface preparation, drying time, cleanup requirements and instructions for mixing and/or reducing.

B. Store materials at ambient temperature between 45 deg. and 90 deg. F in ventilated area and as required by manufacturer's instructions.

C. Prevent fire hazards and spontaneous combustion.

1.6 JOB CONDITIONS

A. Environmental requirements:

1. Comply with coating manufacturer's recommendations for environmental conditions regarding coating applications.

2. Do not apply coating finish in areas where dust is being generated.

B. Provide drop cloths, shields, barricades and other protection necessary to safeguard adjacent surfaces not to be coated. Post signs immediately after completion of application.

C. Provide and maintain protection as required to protect finished work from damage until its acceptance.

1.7 MAINTENANCE

A. With closeout submittals, deliver the following to be used for graffiti removal, to the Government.

Identify material for future information.

1. Three, one-gallon containers, identified, unopened container of graffiti-resistant coating.

2. Two, one-gallon containers and two 32 oz. spray containers, identified, unopened container of graffiti remover.

B. Provide the Government copy of instructions for graffiti removal, use of the above, and maintenance recommendations.

PART 2 - PRODUCTS

2.1 COATING

A. Sacrificial anti-graffiti coating: Water based, clear, non-yellowing emulsion with matt finish, Vandltop by RainGuard International.

1. Material type: Blended Emulsion.

2. Permeability: 100 percent.

3. Solid content: 32 percent by volume.

50 percent by weight.

4. Finish: Clear, matt.

5. VOC: 20g/L.

Bldg. No. CA-0154ZZ

SENSITIVE BUT UNCLASSIFIED (SBU) GRAFFITI-RESISTANT COATING

PROPERTY OF UNITED STATES GOVERNMENT 099623 - 3

FOR OFFICIAL USE ONLY ADDENDUM 02 – 05/06/16

Do not remove this notice. Properly destroy or return documents when no longer needed.

B. Water repellent: Silane siloxane water repellent, Micro-Seal Water Repellent by RainGuard International.

C. Graffiti remover: Biodegradable, citrus based, spray applied, graffiti remover, VandlClean Super by RainGuard International.

PART 3 - EXECUTION

3.1 EXAMINATION

A. Examine surfaces to be coated for conditions that would adversely affect the permanence and quality of the work in this Section.

B. Correct conditions detrimental to the proper and timely completion of this work before proceeding with installation.

3.2 SURFACE PREPARATION

A. Power wash with minimum pressure to clean stone and mortar, leaving surfaces clean and dry.

B. Prepare surfaces to receive the coating in compliance with the coating manufacturer's instructions.

C. Protect adjacent surfaces, landscaping and vehicles from overspray and drift.

3.3 COATING PREPARATION

A. Open containers only as required for use. Mix coating in designated areas.

B. Thoroughly stir and agitate coating to uniformly smooth consistency suitable for proper application.

C. Do not reduce, change, or use any materials except in compliance with manufacturer's printed instructions.

D. Prepare and handle coating to prevent deterioration and inclusion of foreign matter.

3.4 APPLICATION

A. Apply 2 coats of water repellent on all stone and mortar surfaces to receive graffiti-resistant coating. Allow to penetrate and dry before applying second coat or graffiti coating.

B. Apply coating components only under conditions that will insure finishes free from blemishes and defects in compliance with the coating manufacturer's instructions.

C. Remove spillage and spatters on adjacent surfaces so as not to damage the surface being cleaned.

Bldg. No. CA-0154ZZ

SENSITIVE BUT UNCLASSIFIED (SBU) GRAFFITI-RESISTANT COATING

PROPERTY OF UNITED STATES GOVERNMENT 099623 - 4

FOR OFFICIAL USE ONLY ADDENDUM 02 – 05/06/16

Do not remove this notice. Properly destroy or return documents when no longer needed.

D. Apply coating on walls to horizontal grout line a minimum of 10 ft. above adjacent grade. Apply coating to entire stone panels; application to partial panels is not acceptable.

E. Completed work shall match approved sample and mockup, as determined by the Contracting Officer.

3.5 TRAINING

A. Contractor shall demonstrate to the Government method of removing graffiti and reapplication of coating.

END OF SECTION 099623