SCOPE OF WORK SOW ROOF MAINT AND REPAIR SERVICE 2022.docx

SECTION C – STATEMENT of WORK

Monterrey, Mexico

Parking Garage Roof Maintenance and Repair Coating

CONTENTS:

OVERSEAS BUILDINGS OPERATIONS

FACILITY MANAGEMENT

Roof & Façade Management Program

WASHINGTON DC

PART ONE – GENERAL

C.1.1 SUMMARY:

A. The U.S. Consulate in Monterrey, Mexico, has a requirement for a solvent-based elastomeric roof coating and roof related repairs on the existing 22,000 square foot NCC Staff Parking Garage Roof. The area to be coated consists of a concrete deck. The proposed roof repair coating using a local contractor includes, but is not limited to, the following:

1. Clean/Pressure wash roof areas and allow to dry.

2. Perform minor repairs where the concrete slab has been damaged or showing signs of stress cracks.

3. Begin repair work using a primer at low end around roof drains, scuppers or eave edges. Apply primer over entire roof field and flashings.

4. After priming the entire surface, apply first grey coat (base coat) over the entire concrete surface, starting at low end around roof drains or eave edges. While first grey coat is still wet, install/roll full polyester fabric. Install fabric over the entire roof area field.

5. Apply a second grey base coat and embed the full fabric over the entire roof area field so that no white fabric shows through. Allow to dry

6. Apply white coat or finishing material and embed fabric on all base flashings (up-turns) around roof perimeter, penetrations, and terminations. Allow to dry.

7. Apply Flashing Grade at all difficult up-turns, terminations, projections, and flashings or where needed to insure proper waterproofing. Allow to dry.

8. Apply first field white topcoat over the grey coat/field of roof and allow to dry, per manufacturer requirements, prior to applying the second white coat.

9. Apply second white topcoat as final finish.

10. Great Job, sit back and enjoy your work!

B. The following buildings / roof areas are included in their project.

1. Staff Garage CAC Roof Area (PKG) – 22,000 Square Feet

C.1.2 SUBMITTALS:

A. Contractor's executed bonds and insurance certificate.

B. Contractor’s crew individual identification information for background checks.

C. Submit list of all mechanical, electrical, rigging, sheet metal, and all other subcontractors with evidence of subcontractor's insurance coverage.

D. Project schedule showing work phasing and proposed daily progress.

E. Construction Accident Prevention Plan (CAPP) F. Material Manufacturers and Accessory Product Data Sheets.

C.1.3 SUBSTITUTIONS AND PRODUCT OPTIONS:

A. Contractor's Representation: Request for substitution constitutes a representation that Contractor:

1. Has investigated the proposed product and determined that it is equal to or superior in all respects to that specified.

2. Shall coordinate installation of accepted substitution into Work and make such other changes as may be required for Work to be complete in all respects.

3. Waives all claims for additional costs, under Their responsibility, related to substitution which subsequently becomes apparent.

4. If substitution is not approved or accepted, Contractor shall furnish specified product.

B. Substitutions:

1. During Solicitation only written requests for substitutions of products in place of those specified will be considered. Such requests must be received at least two weeks prior to Proposal Date. Requests received after that time will not be considered. Approval of substitutions will be set forth in an Amendment.

2. Requests for substitutions supported with complete data, drawings, and appropriate samples shall include data listed below:

a. Product description, performance and test data, and applicable reference standards.

b. Changes required in other elements of Work because of substitution.

c. Effect on construction schedule.

C. Product Options: For products specified by naming several products or manufacturers, select any product and manufacturer named.

C.1.4 QUALITY CONTROL:

A. The Consulate and OBO has the right to inspect and test all services, to the extent practicable at all times and places during the work. OBO may perform full time quality assurance inspections [QAI] and tests during construction to confirm the work is installed according to the Construction Documents.

B. Maintain quality control over suppliers, manufacturers, products, services, site conditions, and workmanship to produce work of specified quality.

C. Contractor shall be approved by manufacturer to perform the work for the specified guarantee period.

C.1.5 STORAGE OF MATERIALS:

A. Proper storage of materials is the sole responsibility of the Contractor. Keep all labels intact and legible, clearly showing the product, manufacturer, and other pertinent information.

B. Store materials on site. Cover and protect materials subject to damage by weather, including during transit. Stored materials shall be available for inspection.

C. Store flammable and volatile liquids in sealed containers located a minimum of 20 feet from existing buildings.

D. Liquid products shall be delivered sealed, in original containers. Store roll goods in an upright position.

E. Distribute material, debris, and equipment over the roof deck to avoid damage to the structural deck. Place materials and equipment to be stored on the roof as direct over structural members as can be determined. Secure equipment, material, and debris on the roof to prevent movement by wind or other elements.

1. Make arrangements with the Consulate for temporary electrical service. The Consulate will pay energy charges for temporary power and lighting.

2. Notify the Consulate prior to each required interruption of mechanical or electrical services in the building.

3. Provide all necessary temporary wiring extensions and temporary lighting devices.

C. Temporary Ladders, Chutes, Scaffolds, Hoists and Cranes:

1. Furnish and maintain temporary ramps, scaffolds, hoists, or chutes as required for proper execution of Work.

2. Provide overhead protection at all building entrances.

3. Restrict debris removal to consulate -approved area of building site.

4. Restrict location of construction cranes to areas as approved by consulate.

5. Such apparatus, equipment, and construction shall meet requirements of applicable federal, state, and local safety and labor laws.

C.1.7 PROJECT PROCEDURES:

A. Consulate will occupy premises during entire period of construction for the conduct of normal, daily operations. Contractor shall conduct Their operations so as to ensure least inconvenience to Consulate’s operations.

B. Contractor shall take precautions to avoid excessive noise or vibration that would disturb Consulate’s operations. When directed by Consulate, Contractor shall perform certain operations at designated time of day or night to minimize disturbance.

B. Vehicle Clearances: Submit authorization requests, to include dates, vehicle type, license number, and driver name, for each motorized vehicular implement used on-site.

C. Access to Site: Contractor shall have limited access to or be admitted into the compound outside the areas designated for the project except with permission by the Consulate.

C.1.10 REQUEST FOR PROPOSAL:

It is the intention of this Request for Proposal to award a single contract to one Contractor, followed by a specific notice to proceed. Compensation will only be provided for actual efforts completed on the project. The actual on-site Period of Performance shall be based on the actual construction work progress and may vary from the assumed timeframes indicated.

Qualification Statements: Contractor shall prepare and submit with their proposal a Quality Assurance/Control and Management Plan addressing the following:

Organization Structure. Define the proposed organizational structure, including charts, resumes, and a description of responsibilities of key persons who will perform the work. Contractor shall identify person(s) responsible for interface with the Government. Provide a list of equipment, tools and products and a summary of quality standards the organization typically uses on project types.

Individuals Working on this Contract: Contractor shall identify the senior person(s) who will be responsible for final review and verification of site conditions, construction progress, invoicing, and final inspection requests. Cursory supervisory reviews will not be sufficient. Submit personnel current license or certifications by the manufacturer or similar professional organizations and credentials. Each member shall have specific knowledge background, and familiarity with the roof & façade systems to be installed.

Past Experience. Contractor shall prepare and submit a minimum of three past projects of similar size and complexity as this contract. These projects descriptions shall identify the construction contractors’ daily activities, crew members, material deliveries, subcontractors, photographs of daily progress, and a mark-up drawing locating the amount of work meeting the contract schedule. Past experience shall identify the project owner, contract sum, scheduled and steps taken by the Contractor and to coordinate the work effort.

PART TWO - PRODUCTS

C.2.1 SOLVENT-BASED ELASTOMERIC ROOF COATING MANUFACTURERS

A. Provide a high-performance base primers, intermediate coatings, and topcoats made of a proprietary blend of solvent-based polymers (SBS, SEBS, PMMA); that are from single source manufacturer. All accessory materials shall be compatible with one another and with the substrate for application.

B. GSA Schedule Vendors which meet the specifications include but are not limited to:

1. ARC Architectural Roof Coatings Rowlett, TX 75088 +1-972-864-0240

2. SIKA Corporation Pakistan Lyndhurst, NJ 07071 +1-800-933-7452

3. TOPPS Products Inc. South Africa Canton, MS 39046 +1-800-867-7177

C.2.2 MATERIALS and ACCESSORIES A. White Top and Grey Base Coats: Single-component high solids polymer elastomer. The coating forms a non-breathing, high tensile strength and a highly elastic membrane which is designed to provide heat reduction, cold weather flexibility, chemical, weather and water resistance. Brush, roller, or spray grade. Gray Base Coat and Bright white Topcoat in colors:

1. DynaSHIELD Lo-Odor Coating by Architectural Roof Coatings

2. Topps Seal Excel Protective Roof Coating (Rubber Clad Base Coat)

3. Sikalastic Lo-VOC Liquid Membrane by Sika 601 BC and 621 TC

4. Physical Properties:

A. Primer Coat for adhesion to concrete surfaces.: Single-component high solids polymer elastomer; brush, roller, or spray grade; gray in color:

1. DynaSHIELD Lo-Odor HP Primer by Architectural Roof Coatings

2. Topps ClearSeal masonry and concrete primer

3. Sikalastic 502 Primer by Sika

4. Physical Properties:

B. Flashing Cement: Trowel grade single component, block copolymer elastomeric mastic that forms as a tough and durable elastomeric membrane. The mastic has elongation properties, cold weather pliability, UV and water resistance, chemical resistance and a highly reflective finish. May also be used in sealing interfaces with accessories such as drains, scuppers, and pitch pans.

1. DynaSHIELD Lo-Odor Flashing Grade by Architectural Roof Coatings

2. Topps Gutter Guard and Polyprene Compound

3. Sikalastic 500 Flash by Sika

4. Physical Properties:

C. Polyester Reinforcing Fabric and Tape: Flexible 100% stitch bond polyester fleece sheet product of high tear strength and elongation and type or composition recommended by manufacturer for embedment of elastomeric coating. White in color. Weight: 0.9 pounds/100 SF. Size: 100mm, 150mm, and 1000mm (40 inch) width rolls:

1. Topps PolyCore polyester fabric

2. Sika Fleece 140

3. Physical Properties:

D. Accessories and Cleaners: Supplied and/or recommended by manufacturer for product installation.

1. Power Washer: minimum 3500 PSI / 250cc gasoline powered engine mounted on wheels with 10-meter hose and adjustable spray pressure nozzle

2. Power Drill & Mixing Paddle: heavy duty for cement, plaster, or paint. Such as Nordstrand PWTPM01 Pro Mixer Stirring Tool; 6 Speed; 1800Watt with 120mm round steel mixing paddle bit.

3. Caulking: Single component, non-sag elastomeric polyurethane sealant, as recommended or supplied by membrane manufacturer, for use in making airtight and watertight seals such as Dynatrol I by Pecora Corp., white color.

4. Cleaning Solvent: 100% hydrocarbon for diluting solvent-based coating products and cleaning

5. Mineral Spirits for thinning solvent-based coatings

6. Roller Frames and Roller Sleeves; 225mm

7. Brushes; 50mm, 100mm, 150mm widths E. Miscellaneous Fasteners: Appropriate for purpose intended, length required for thickness of material. Replacement fasteners may be one size larger in diameter and depth. Select fastener finish metal to be compatible or of same metal as substrate.

F. Sealant: One component polyurethane sealant such as "Dynatrol I" by Pecora Corp., Color to match finish and metal.

G. Leveling and Patching Aggregate: Silica sand shall be washed, kiln-dried, and dust-free, suitable for troweling or pourable self-leveling, round grain or angular for voids ¼” to 2” in depth: 0.7 - 1.2 mm. Mixing Proportions shall be a ratio of resin to sand at 1:2 by volume.

PART THREE - EXECUTION

C.3.1 PREPARATION OF SUBSTRATE

A. Post to remove existing lightning projection prior to project start-up and replace at project completion.

B. Contractor shall determine the condition of the existing structural deck/substrate. All defects in the deck or substrate shall be corrected before new solvent-based elastomeric coating commences. Areas of deteriorated deck/substrate, porous or other affected materials must be removed and replaced with new to match existing.

C. Surface preparation is the most critical procedural requirement in paint applied coating systems. Remove all loose particles, delaminated paint, oil, grease, laitance, efflorescence, mild, mildew and other foreign materials. Areas shall be first scraped, swept clean, and then thoroughly power washed. Use a high-power adjustable pressure washer with a minimum 3500 PSI (Pounds per Square Inch) mechanical spray device.

D. Each individual container of elastomeric primer and topcoats shall be thoroughly mixed using a heavy-duty drill on slow RPM (Revolutions per Minute) with an elongated mixing paddle bit that will reach the bottom of the container. Coating shall be a uniform color, with no light or dark streaks present.

E. Coatings shall be applied in temperatures of fifty degrees Fahrenheit (50°F / 10°C) or greater.

C.3.3 THINNING SOLVENT-BASED ELASTOMERIC FOR SPRAY EQUIPMENT

A. Thinning Mix: One-quart mineral spirits to 5 gallons solvent-based elastomeric.

1. Pour 1 gallon from a 5-gallon pail coating into another container. Add one-quart mineral spirits to 4 gallons and mix thoroughly. Use an electric drill and mixing paddle. Add portions of the removed 1 gallon and continue to mix until the coating is properly thinned.

2. Spray apply thinned elastomeric coating in two coats to meet minimum thickness.

B. Additional Thinning Mix: Maximum two quarts mineral spirits to 5 gallons elastomeric.

1. Spray apply thinned elastomeric coating in three coats to meet minimum thickness.

C. DO NOT thin elastomeric coatings for brush or roller applications.

1. Reinforcing Fabric Full Coverage: Roll out polyester fleece with smooth side facing up (natural unrolling procedure) into the primer. The fleece will begin to rapidly saturate with the liquid primer.

2. Use a medium nap roller or brush to work the primer into the fleece, saturating from the bottom up, and eliminating air bubbles, folds and wrinkles.

3. The appearance of the saturated fleece shall be light opaque with no white spots. White spots where fabric clearly shows through, are indications of unsaturated fleece or lack of adhesion

4. Allow 75mm overlap for all side joints and 100mm overlap for all end joints.

D. Apply final coat of elastomeric coating on top of fleece fabric to finish the saturation of the fleece. Rolling their final coating into the fleece, shall result in a semi-gloss appearance. Be careful not to “pull up” the fabric. Allow first grey base coat to dry sufficiently to “hold” fabric.

E. Allow grey base to cure for a minimum of twenty-four (24) hours before finish coats. TTheir may require a longer period depending on the climate and humidity.

F. DO NOT apply finish topcoat over primer prematurely exposed to excessive moisture, primer used as temporary waterproofing, or primer older than eight (8) days. Exposure of the primer in excess of eight (8) days may require removal and application of new primer.

C.3.6 FLASHING DETAILING

A. Using a trowel, apply flashing grade cement at any areas where there are roof terminations, penetrations, flashings, seams, or transitional joints. It may be applied to both horizontal and vertical surfaces and will bridge gaps up to 12mm in width.

B. Reinforcing fabric may be embedded in flashing cement for additional strength and mobility. However, based on the thickness and consistency of the material, the fabric may be difficult to embed and cause excessive wrinkles and gaps. Fabric must be used to bridge large openings.

C. Reinforce all inside and outside corners with a 100mm diameter conical piece of fabric prior to installing the flashing layer.

D. Flashing is typically constructed as a two-part assembly consisting of a vertical wrap and a horizontal target patch. There must be a minimum of a 100mm overlap between vertical and horizontal flashing components.

E. Flashing material shall extend 100mm minimum onto drains, scuppers, or insert flanges.

C.3.10 CLEANING and ADJUSTING A. After completing the coating application, clean spattered surfaces. Remove spattered coatings by washing, scraping, or other methods. Do not scratch or damage adjacent finished surfaces.

B. During progress of work, remove discarded paint materials, rubbish, cans, and rags from site at the end of each workday. Thoroughly mixed and cured coating products may be disposed of in standard landfills. Uncured products are considered a hazardous material and must be handled as such and disposed in accordance with local regulations.

C. Reinstall all disconnected equipment after completion of coating works. Reset rooftop equipment on protective pads. Reconnect pipe, conduit, wiring, and reactivation of the equipment to its original condition shall be provided by Contractor D. Correct any damage by cleaning, repairing, or replacing, and painting as acceptable to the Consulate.

PART FOUR - SCHEDULE

PART FIVE - DRAWINGS

C.5.1 ROOF PLAN

PART SIX – NON-BINDING CONTRACT INFORMATION

C.6.0 TYPICAL ROOF COATING STEPS

Power wash and cleaning preparation Primer application

Embedding fabric in base coat Flashing detail

White topcoat Finished product with second white coat.

C.6.1 ROOF PHOTOGRAPHES

Staff Parking Garage Overview Staff Parking Garage Overview

Parapet Wall of PKG Staff Parking Garage Overview

Parapet Wall of PKG Existing Conditions of PKG

END OF SOW

08.13.2021 STATEMENT of WORK 1

UNCLASSIFIED

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