36C24920R0008-0006007.pdf

Department of Veterans Affairs Network Contracting Office 9 VA: 61417-112 Renovate Building 1 Clinical Lab Memphis VAMC, Memphis Tn.

03.04.2020 Addendum #001

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SECTION 09 96 56

WALL EPOXY COATING

PART 1 – GENERAL

1.1 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 1 Specification Sections, apply to this Section.

1.2 SUMMARY

A. This section includes the following:

1. Epoxy wall coating system as shown on the drawings and in schedules.

B. Related sections include the following:

1. Gypsum Board, section 09 29 00

1.3 SYSTEM DESCRIPTION

A. The work shall consist of preparation of the substrate, the furnishing and application of a wall coating system, with decorative colored chips and urethane topcoats. The system shall have the color and texture as specified by the Owner with a nominal thickness of 55

- 60 mils. It shall be applied to the prepared area(s) as defined in the plans strictly in accordance with the Manufacturer's recommendations.

1.4 SUBMITTALS

A. Product Data: Latest edition of Manufacturer's literature including performance data and installation procedures.

B. Manufacturer’s Material Safety Data Sheet (MSDS) for each product being used.

C. Samples: A 3 x 3 inch square sample of the proposed system. Color, texture, and thickness shall be representative of overall appearance of finished system subject to normal tolerances.

1.5 QUALITY ASSURANCE

A. The Manufacturer shall have a minimum of 10 years experience in the production, sales, and technical support of epoxy and urethane industrial flooring and related materials.

B. The Applicator shall have experience in installation of the flooring system as confirmed by the manufacturer in all phases of surface preparation and application of the product specified.

C. No requests for substitutions shall be considered that would change the generic type of the specified System.

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D. System shall be in compliance with requirements of United States Department of Agriculture (USDA, Food, Drug Administration (FDA), and local Health Department.

E. A pre-installation conference shall be held between Applicator, General Contractor and the Owner to review and clarification of this specification, application procedure, quality control, inspection and acceptance criteria and production schedule.

1.6 PRODUCT DELIVERY, STORAGE, AND HANDLING

A. Packing and Shipping

1. All components of the system shall be delivered to the site in the Manufacturer's packaging, clearly identified with the product type and batch number.

B. Storage and Protection

1. The Applicator shall be provided with a storage area for all components. The area shall be between 60 F and 90 F, dry, out of direct sunlight and in accordance with the Manufacturer's recommendations and relevant health and safety regulations.

2. Copies of Material Safety Data Sheets (MSDS) for all components shall be kept on site for review by the Engineer or other personnel.

C. Waste Disposal

1. The Applicator shall be provided with adequate disposal facilities for non-hazardous waste generated during installation of the system.

1.7 PROJECT CONDITIONS

A. Site Requirements

1. Application may proceed while air, material and substrate temperatures are between 60 F and 90 F providing the substrate temperature is above the dew point. Outside of this range, the Manufacturer shall be consulted.

2. The relative humidity in the specific location of the application shall be less than 80 % and the surface temperature shall be at least 5 F above the dew point.

3. The Applicator shall ensure that adequate ventilation is available for the work area.

4. The Applicator shall be supplied with adequate lighting equal to the final lighting level during the preparation and installation of the system.

B. Conditions of substrate to be coated with epoxy material.

1. Concrete shall be cured for a minimum of twenty-eight days prior to the application of the coating system.

2. Block wall mortar joints have cured no less than 7 days under good conditions.

3. Sealers and curing agents should not be used.

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4. Drywall shall be completely clean and free of any oils, soap residue, and gypsum dust and prepared to a #4 to #5 finish.

C. Safety Requirements

1. All open flames and spark-producing equipment shall be removed from the work area prior to commencement of application.

2. "No Smoking" signs shall be posted at the entrances to the work area.

3. The Owner shall be responsible for the removal of foodstuffs from the work area.

4. Non-related personnel in the work area shall be kept to a minimum.

1.8 WARRANTY

A. Manufacturer warrants that material shipped to buyers at the time of shipment substantially free from material defects and will perform substantially to manufacturer’s published literature if used in accordance with the latest prescribed procedures and prior to the expiration date.

B. Manufacturer’s liability with respect to this warranty is strictly limited to the value of the material purchase.

PART 2 – PRODUCTS

2.1 COATING

A. Dur-A-Flex, Inc, Dur-A-Wall VC, epoxy-based, urethane topcoat, chip seamless wall system

1. System Materials:

a. 1st Broadcast Coat: Dur-A-Flex, Inc, Dur-A-Gard No Sag resin and hardener.

b. 2nd Broadcast Coat: Dur-A-Flex, Inc, Dur-A-Glaze # 4 Water Clear resin and hardener.

c. Chips: Dur-A-Flex, Inc, decorative chips (Micro or Macro)

d. Grout Coat: Dur-A-Flex, Inc, Dur-A-Glaze #4 Water Clear resin and hardener.

e. Topcoats: Dur-A-Flex, Inc. Armor Top resin and hardener

2. Patch Materials

a. Shallow Fill and Patching: Use Dur-A-Flex, Inc. Dur-A-Glaze

Rapid Patch.

B. The Sherwin-Williams Company, BioFlake Wall System with 4408 urethane topcoat.

2.2 MANUFACTURER

A. Dur-A-Flex, Inc., 95 Goodwin Street, East Hartford, CT 06108, Phone:

(860) 528-9838, Fax: (860) 528-2802 B. The Sherwin-Williams Company, 101 Prospect Avenue, Cleveland, OH, 44101, General Polymers Division.

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C. Manufacturer of Approved System shall be single source and made in the USA.

D. Substitutions permitted. All substitutions must be reviewed by COR and A/E prior to bidding and contract award.

PART 3 – EXECUTION

3.1 EXAMINATION

A. Examine substrates, areas and conditions, with Applicator present, for compliance with requirements for maximum moisture content, installation tolerances and other conditions affecting coating performance.

1. Verify that substrates and conditions are satisfactory for installation and comply with requirements specified.

3.2 PREPARATION

A. General

2. New and existing concrete surfaces shall be free of oil, grease, curing compounds, loose particles, moss, algae growth, laitance, friable matter, and dirt.

3. There shall be no visible moisture present on the surface at the time of application of the system.

4. Remove loose mortar spatter, joint compounds etc.

5. Create a surface profile on concrete with sandblasting apparatus and/or dust-free diamond grinders.

6. Masonry block shall be clean, dry and coated with a high solids block filler.

7. Drywall shall be completely clean and free of any oils, soap residue, gypsum dust etc.

3.3 APPLICATION

A. General

1. The system shall be applied in distinct steps as listed below:

a. Substrate preparation

b. Priming

c. Broadcast coats application with chip broadcast

d. Second broadcast coat application with chip broadcast

e. Grout coat application

f. Topcoat applications

2. The handling, mixing and addition of components shall be performed in a safe manner to achieve the desired results in accordance with the Manufacturer's recommendations.

3. The system shall follow the contour of the substrate.

4. A neat finish with well-defined boundaries and straight edges shall be provided by the Applicator.

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B. Priming

Manufacturer’s interior/exterior block filler is recommended to fill any pores in the substrate when applying system over concrete or block walls. When applying over sheet rock, use a quality sheetrock. This will prevent the base coat from soaking into the sheet rock.

C. 1st Broadcast Coat

1. The broadcast coat shall be comprised of the specified two components, a resin, and hardener.

2. The resin shall be added to the hardener and thoroughly mixed by suitably approved mechanical means.

3. The base coat shall be applied by a roller at the rate of 200 sf/gal to yield a dry film thickness of 8 mils.

4. The chip will be broadcast into the wet resin at the rate of 0.1-

0.12 lb/SF.

D. 2nd Broadcast Coat

1. A second broadcast coat will be applied as the first.

E. Grout Coat

1. The grout coat shall be comprised of the specified two components, a resin, and hardener.

2. The resin shall be added to the hardener and thoroughly mixed by suitably approved mechanical means.

3. The grout coat shall be applied using a roller at the rate of 200 sf/gal to yield a dry film thickness of 8 mils.

F. Topcoats

1. The topcoat of Armor Top is typically applied using the dip and roll method at the rate of 500 sf/gal. Armor Top should not be applied more than 3 mils wet.

2. The topcoat shall be comprised of a liquid resin and hardener that is mixed at the ratio per the manufacturer’s instructions.

3. Repeat steps 1 and 2.

4. The finish coating will have a nominal thickness of 55-60 mils.

3.4 FIELD QUALITY CONTROL

A. Tests, Inspection

1. The following tests shall be conducted by the Applicator:

a. Temperature

1. Air, substrate temperatures and, if applicable, dew point.

b. Coverage Rates

1. Rates for all layers shall be monitored by checking quantity of material used against the area covered.

3.5 CLEANING AND PROTECTION

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A. Cure material in compliance with manufacturer’s directions, taking care to prevent their contamination during stages of application and prior to completion of the curing process.

B. Remove masking. Perform detail cleaning to leave cleanable surface for subsequent work of other sections.

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