SECTION 09962

PROTECTIVE COATINGS

PART 1 - GENERAL

1.1               SUMMARY

[EDIT PARAGRAPH BELOW TO INCLUDE APPLICATIONS OF PROTECTIVE COATINGS OR DESIGNATE LOCATIONS ON DRAWINGS.]

A.        Section Includes:

1.         Surface preparation and application of protective coatings to exterior surfaces.

2.         Applications include: Apply protective coatings to vertical surfaces and non-traffic surfaces of the following:

a.         Concrete

b.         Brick masonry

c.         Concrete unit masonry

d.         Portland cement plaster

e.         Stonework

1.2               PERFORMANCE REQUIREMENTS

A.        Provide protective coating systems with the following performance requirements as determined by test methods specified:

1.         Graffiti barrier: Allows for easy removal of graffiti with pressurized hot water. 

2.         Vapor Permeability: 0.026 grains/hr by square foot, average.

3.         UV Resistance: 90% of ultra-violet light in the 315-350 nm range will be absorbed by coating.

B.        Paintability: Protective coating shall be capable of being applied to previously painted surfaces, and shall be capable of being painted.

1.3               SUBMITTALS

A.        Product Data:

1.         Manufacturer's technical information and instructions for handling, storing, and applying protective coating.

2.         Certification by protective coating manufacturer that products supplied comply with local regulations controlling use of VOCs.

3.         Product Test Reports: Submit test reports from an independent testing agency indicating compliance of protective coatings with material performance requirements.

1.4               QUALITY ASSURANCE

A.        Applicator Qualifications:  Engage an applicator, acceptable to the manufacturer, and who has completed protective coating applications with a record of successful in-service performance.

B.        Field Samples:  Provide a field applied sample of protective coating applied to each substrate required on the Project.

1.         The Architect will select one exterior surface to represent surfaces and conditions for each substrate.

2.         Prepare field samples on at least 100 sq. ft. of each substrate surface.

3.         After field samples are approved, these surfaces will be used to evaluate protective coating application.

4.         Obtain the Architect's approval of samples before starting application of protective coating.

5.         Include demonstration of proposed methods of protecting non-masonry elements from damage.

6.         Measure rate of application of coating to sample installation, for purpose of using the same rate of application in the balance of the installation as was used in the accepted sample installation.

1.5               DELIVERY, STORAGE, AND HANDLING

A.        Packing:  Deliver materials to the Project site in manufacturer's original, unopened packages and containers bearing the manufacturer's name and label, and the following information:

1.         Product name or title of material.

2.         Manufacturer's stock number and date of manufacture.

3.         Application instructions.

4.         Handling instructions and precautions.

5.         VOC content.

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

1.6               PROJECT CONDITIONS

A.        Temperature Conditions:  Apply coatings only when temperature of surfaces to be coated and surrounding air temperatures are between 50 and 90 deg F.

B.        Weather Conditions:  Do not apply coatings in precipitation; when relative humidity exceeds 85 percent; or at temperatures less than 5 deg F above the dew point; or to damp or wet surfaces.

1.7               SEQUENCING

A.        Application of protective coating shall begin following substrate cleaning.

B.        Schedule application of protective coatings to prevent dust and other contaminants from collecting on coated surfaces.

1.8               WARRANTY

A.        Protective Coating Warranty:  Submit a written warranty, executed by the manufacturer, agreeing to replace protective coatings that fail within the specified warranty period.   Failures include:

1.         Discoloration

2.         Loss of efficacy

3.         Warranty Period for Protective Coating:  5 years from the date of Substantial Completion.

PART 2 - PRODUCTS

2.1               MANUFACTURER

A.        Manufacturer/Products:  Subject to compliance with requirements, provide the following products:

1.         Great Barrier Systems, Chicago, Illinois; G-PRO® protective coating and G-PRO® Masonry Sealer. (773-761-1677)

2.2               PROTECTIVE COATING MATERIALS

A.        Provide transparent coating that is not visible under dry conditions and that forms a protective barrier against the penetration of water and graffiti.

1.         Coating: Clear, flat finish.

B.        Material Characteristics:

1.         Volatile Organic Compounds (VOC): None

2.         Water soluble

3.         Percent of solids by volume: 14%

4.         pH: less than 7

5.         Viscosity: Greater than 700 centipoise

6.         Toxicity: No ingredients classified as hazardous or toxic

PART 3 - EXECUTION

3.1               EXAMINATION

A.        Examine substrates and conditions, with the Applicator present, under which protective coating systems will be applied for compliance with application requirements.  Surfaces to receive protective coatings must be thoroughly dry before coatings are applied.

B.        Notify the Architect in writing of anticipated problems.

C.        Begin application only after unsatisfactory conditions have been corrected and surfaces to receive coating are thoroughly dry.

D.        Start of coating within a particular area will be construed as the Applicator's acceptance of surface conditions.

3.2               PREPARATION

A.        Remove fixtures, and similar items that are not to be coated, or, if removal is impractical, provide surface-applied protection before application of protective coating.

B.        After completing coating operations in each area, reinstall items removed.

C.        Clean and prepare surfaces to be coated according to manufacturer's written instructions for the particular substrate conditions and as specified.

D.        Masonry and Cementitious Surfaces:  Prepare masonry, concrete, plaster, and similar surfaces to receive protective coatings.  Remove efflorescence, chalk, dust, dirt, release agents, grease, oils, and similar conditions by water blasting followed by a clear water rinse.

E.        Remove mildew and neutralize surfaces according to manufacturer's written recommendations before materials are applied.

F.        Determine alkalinity and moisture content of surfaces to be coated by performing appropriate tests.  Do not apply coatings over surfaces where moisture content or alkalinity exceeds that permitted in manufacturer's written instructions.

G.       Material Preparation: Prepare materials according to coating manufacturer's written instructions.

H.        Stir materials before application to produce a mixture of uniform density.  Stir as required during application.

3.3               APPLICATION

A.        Apply protective coatings to exposed surfaces indicated, according to manufacturer's written instructions.

B.        Application Procedures:  Apply protective coatings by spray application, roller, or brush, according to manufacturer's written instructions.

C.        Spray Equipment:  Use spray equipment with orifice size as recommended by the manufacturer.

D.        Minimum Coating Thickness:  Apply protective at manufacturer's recommended application rate to achieve coating thickness.  Provide total coating thickness as recommended by the manufacturer.

E.        Spray Application:  Use spray equipment for application in accordance with manufacturer's written recommendations.

3.4               FIELD QUALITY CONTROL

A.        The Owner reserves the right to require the following test procedure at any time and as often as the Owner deems necessary during the period when coating operations are being conducted:

B.        The Owner will engage the services of a qualified independent testing and inspecting agency to sample coating used.  Samples of material delivered to the Project will be taken, identified, sealed, and certified in presence of the Contractor.

C.        The testing and inspecting agency will perform appropriate tests for the following characteristics:

1.         Materials analysis.

2.         Water-vapor transmission.

3.         Water repellence.

4.         Accelerated weathering.

D.        If results show materials do not comply with requirements, the Contractor may be directed to stop work, remove noncomplying materials, pay for testing, remove rejected materials from previously coated surfaces, and recoat surfaces.

3.5               CLEANING

A.        At end of each workday, remove waste materials and other discarded materials from the Project site.

B.        After completing coating work, clean adjacent spattered surfaces.  Remove spattered coating by methods recommended by manufacturer, being careful not to scratch or damage adjacent finished surfaces.

3.6               PROTECTION

A.        Protect work of other trades from damage whether being coated or not.  Correct damage as approved by the Architect.  Leave in an undamaged condition.

END OF SECTION