B08 Attachment 1 SOW Chincoteague Roof Repairs.pdf

STATEMENT OF WORK

VISITOR CENTER AND ADMINISTRATIVE BUILDING

ROOF REPLACEMENT

AT THE

CHINCOTEAGUE NATIONAL WILDLIFE REFUGE (NWR)

VIRGINIA

February 23, 2021

SECTION 1 - GENERAL REQUIREMENTS

1.01 SCOPE OF REQUIRED SERVICES

The visitor center and administrative building at Chincoteague NWR requires roof replacement, and interior repairs. All construction work shall be performed per the statement of work, and as shown on the attached drawing in Attachment 1. All incidental work shall be performed per the statement of work.

The Contractor shall visit the site of work and meet with the Casey Custer, Maintenance department, to evaluate the existing building conditions, and provide a proposal to perform the roof and interior repair work.

1.02 GENERAL SITE DESCRIPTION

The Chincoteague National Wildlife Refuge is located at 8231 Beach Road, Chincoteague, Virginia, 23336. To arrange a site visit, the point of contact at the Refuge is Casey Custer, (cell number 757-894-4305), email casey_custer@fws.gov.

SECTION 2 - CONSTRUCTION SERVICES

The Contractor shall provide all the required labor and materials to perform the roof replacement and interior work per the statement of work. Install all materials in complete accordance with the manufacturer's recommendations.

A. Upon completion of the roof replacement work, there shall be no roof leaks.

1. Material submittals shall be provided by the Contractor for Government review and approval for all the materials to be incorporated into the work for conformance with the project requirements.

2. The Contractor shall be responsible for strict compliance with all provisions of mailto:casey_custer@fws.gov

Occupational Safety and Health Administration (OSHA) requirements 29 CFR 1910 and 29CFR 1926 during the performance of the work.

3. Upon completion of the project, all work areas shall be free from debris. The existing construction materials demolished shall removed from the site.

SECTION 3 – WORK AREAS

ROOF REPAIRS INCLUDE THE FOLLOWING WORK:

ADMINISTRATION BUILDNG AREA

1. Remove existing tarp, valley flashing and the standing seam panels.

2. Remove existing sheathing and dispose of off-site.

3. Furnish and install new ¾" pine sheathing.

4. Furnish and install new ice & water shield for underlayment.

5. Furnish and install a new Standing Seam 360 roof system or approved equal.

6. Remove existing cedar siding by the valley flashing.

7. Furnish and install new valley flashing, roof-to-wall flashing, and panel closures.

8. Furnish and install new beveled cedar siding.

9. Furnish and install a new 4"x 5" metal building system gutter and downspout system on two separate high-roof locations to alleviate drainage onto the new roof.

10. Furnish and install all counter flashing, eave closure flashing, and any additional flashing/trim as needed.

11. At the Foyer Area, replace 200 sq ft of 9” SIP RIGID insulation ceiling panels.

12. At the Foyer Area, replace 200 sq ft of 1” thick acoustic TECTUM (or approved equal) ceiling tiles to match.

VISITOR CENTER AREA

1. Begin roof tear-off at the valley gutter.

2. Remove valley flashing and standing seam panels as well as all roof to wall flashing.

3. Remove existing sheathing and dispose of off-site.

4. Furnish and install new ¾" pine sheathing.

5. Furnish and install new ice & water shield for underlayment.

6. Furnish and install a new Standing Seam 360 roof system or approved equal.

7. Install new valley flashing and roof-to-wall transitions.

8. Flash corners to promote positive drainage and water flow.

9. Enlarge existing scupper by 4" vertically.

10. Furnish and install new flashing, coping and drip edge for enlarged scupper.

11. Provide and install new beveled cedar siding as required in locations for low and high eave flashing and all roof to wall transitions.

12. Furnish and install all: counter flashing, eave closure flashing, and any additional flashing/trim as needed.

13. At the west foyer entrance hallway area, replace 400 sq ft of 9” SIP RIGID insulation ceiling panels.

14. At the front desk area, replace 250sqft of 9” SIP RIGID insulation ceiling panels.

15. At the west foyer area, replace 400 sq ft of 1” thick acoustic TECTUM (or approved equal) ceiling tiles to match.

Front desk area:

Replace 250 sq ft of 1” thick acoustic TECTUM (or approved equal) ceiling tiles to match.

EAGLE’S NEST AREA

1. Remove and dispose of existing 5'x 10' skylight and flashing.

2. Inspect and repair any damage to existing single ply roofing that returns to parapet/skylight.

3. Furnish and install a continuous cleat for framed opening.

4. Furnish and install new flashing with a drip edge.

5. Furnish and install a new 5'x 10' insulated skylight set in a continuous bed of sealant.

SECTION 4 - STANDING-SEAM METAL ROOF PANELS

PART 1.0 - GENERAL

1.1 DESCRIPTION

A. WORK INCLUDED

1. Metal Roof Panels.

2. Flashing, perimeter flashing, closures, eaves, ridge, rake, gable wall, curbs, or other roof curbs system flashings and accessories installed and any other components specified within this contract or required to provide a weather tight roof system.

1.2 QUALITY ASSURANCE

A. ROOFER'S QUALIFICATIONS

1. The standing seam metal roofing and roof related accessories shall be provided and installed by one of the following:

a. Authorized Roofing Contractor of the Manufacturer;

b. Roofers authorized by the Manufacturer as trained and qualified to install the Manufacturer's product.

B. DESIGN CRITERIA

1. The Manufacturer of the Interlocking Standing Seam Roof Covering shall have been regularly engaged in the fabrication of metal standing seam roof systems for at least ten (10) years. All materials shall be new, unused, and free from defects.

2. The following standards and criteria shall be used where applicable in the structural design of the roof system covered by this Specification:

a. "MANUAL OF STEEL CONSTRUCTION", American Institute of Steel

Construction - 9th Edition

1. The Manufacturer shall be certified through the "AISC Quality

Certification" program in "Category MB".

b. "COLD FORMED STEEL DESIGN MANUAL", American Iron & Steel

Institute, 1986 Edition

c. Specific Building Code -(Snow/wind loading criteria). In the absence of specific design load criteria, ASCE-7 (formerly ANSI A58.1) criteria may be used.

d. Roof panels, clips and fasteners shall be designed for a basic wind speed of 135 mph applied in accordance with the International Building Code.

The roof panel, clip and fastener shall have been tested and passed a wind uplift rating of UL Class 90 for the specified fastener spacing. The roof system shall be listed in Underwriters Laboratories "Roofing Materials and Systems Directory".

1.3 SUBMITTALS

A. The Contractor shall identify the standing seam metal roofing Manufacturer and authorized installer in the submittals.

B. SHOP DRAWINGS:

1. Submit shop drawings, clearly indicating scope of work, including roof panels, clips and fasteners, insulation and ventilation, typical flashing details and typical accessory details.

2. Submit Manufacturer's specifications on all sealants.

3. Submit applicable sample warranties of products with bid proposal.

4. Submit, for approval, descriptive data on all material to be provided.

Data shall be sufficient to indicate conformance to specified requirements.

5. Submit Manufacturer's recommended installation method showing all requirements for panel installation, sealant application and substructural connections.

6. Submit Manufacturer's suggested material handling and material protection requirements.

1.4 WARRANTY

A. ROOF PANELS

1. Durability of the metallic coated unpainted roof panels due to rupture, structural failure or perforation shall be warranted for a period of twenty (20) years by the Manufacturer.

2. The exterior color finish for painted roof panels shall be warranted by the Manufacturer for twenty-five (20) years against blistering, peeling, cracking, flaking, checking and chipping.

3. Excessive color change and caulking of the painted roof panel finish shall be warranted for twenty (20) years.

B. WEATHERTIGHTNESS

1. The entire roof system including all roof panels, flashings, curbs, etc. shall be warranted against leaks for a period of twenty (20) years and the warranty will be non-prorated.

2. The warranty shall be issued to the Owner by the Manufacturer.

3. The warranty liability shall be limited to the installed cost of all materials supplied by the roofing Manufacturer.

PART 2.0 - PRODUCTS

2.1 STANDING SEAM PANELS

A. MATERIALS

1. Panels shall be 24 gage (minimum) interlocking standing seam.

The exterior paint finish shall be 70% fluorocarbon coating, minimum

1.0 mil dry film thickness (inclusive of primer). The interior finish shall be 0.3 mil thick wash coat over 0.2 mil primer. Exterior color is to be selected by the Refuge manager from Manufacturer's standard colors. Use the Standing Seam 360 roof system, which is manufactured by American Buildings company, or approved equal.

2. Roof panels with lap type side joints or those requiring battens or other non-integral sealing means or exposed structural fasteners shall not be considered acceptable.

3. Roof panels shall be roll formed in the Manufacturer's plant to control quality. On-site roll formed panels are not acceptable.

4. Roof panels shall have plant-installed sealant for quality control.

B. ROOF SYSTEM

1. Roof panels shall be of standing seam interlocking design and secured to the supports with a concealed structural fastening system.

2. The concealed attachment system shall eliminate all through fastener penetration of the exposed roofing surface into structural supports and allow the roof covering to move independently of any differential thermal movement by the framing system.

3. The panel-to-structural clip shall be designed to accommodate one (1.0) inch of thermal movement in both expansion and contraction (two inches total). The clip shall incorporate a self-centering feature to assure one (1.0) inch of movement capability in both directions.

4. The standing seam panels shall have integral male and female interlocking ribs with a plant applied, non-hardening sealant, and the seams shall be continuously locked or crimped together by mechanical means during installation.

5. Roof panels shall have flush horizontal and vertical surfaces, to facilitate sealing at terminations. Panel configurations which create voids requiring supplemental closure devices shall not be considered acceptable.

6. Roof panels shall be fastened to the support framing members with a concealed clip or backing device of steel having a protective metallic coating. Through penetration of the roofing surface by exposed fasteners shall occur only for non-structural connections at panel termination and roof perimeter flashing locations. Such fasteners shall be corrosion resistant aluminum-zinc alloy die cast head steel screws with weather seal washers.

7. Panel termination and perimeter flashings (attached to roof panels) shall be sealed with sealants recommended and furnished by the Manufacturer.

8. Required closures shall be metal. Non-metal closures will not be acceptable.

2.2 TRIM SYSTEMS

A. Trim shall be designed to provide for expected movement of the roof panels due to thermal expansion and contraction. Details shall conform to the suggested details provided by the Manufacturer.

B. Color shall be selected from Manufacturer's standards. Finish on Manufacturer's standard trim items and flat sheets used for on-site trim fabrication shall conform to specifications for panels.

C. Trim components formed by the roofing contractor shall conform to details submitted and approved by the Architect, and approved by the Manufacturer.

2.3 ROOF ACCESSORIES

A. ROOF JACKS

1. For pipe penetration openings 12 inches in diameter or smaller, flash and seal these penetrations to the roof panel by roof jacks.

2. Roof jack material shall be EPDM with an aluminum sealing ring base.

3. Roof jacks are acceptable, providing attachments can be made in the flat of the panel and no standing seam rib has been altered. If a panel rib must be cut due to location of a penetration, a roof curb must be used.

4. Installation of roof jacks must comply with Manufacturer's instructions.

B. ROOF CURBS

1. SCOPE AND QUALITY

a. The roof curb unit(s) covered by this Specification shall be fabricated to the specifications of the roofing

Manufacturer, thereby assuring compatibility with the roof construction framing and covering.

b. The roof curb shall be of the size and design shown on the drawings or as noted in the proposal. It shall support the specific ventilating device in a nominally horizontal position above the weather surface of the roof and adequately deflect storm drainage around its periphery.

c. All sealants, closures, and fasteners, etc., shall be included for proper installation and performance.

d. Roof vent curb and supporting framing shall provide for the expected expansion and contraction of the roof panels.

2. MATERIALS AND CONSTRUCTION

a. Metal roof curbs shall be provided with a horizontal flanged top projecting a minimum of 12" above the weather surface plane. The base shall fit the roof slope and shall be compatible with the roof panels to which it is flashed and/or sealed and fastened.

b. The curb shall be fabricated from the same or thicker stock thickness and shall match the color of the rest of the roof. All exterior seams are to be continuously welded and watertight.

c. Miscellaneous Materials

1. Sealing compounds shall be as specified and supplied by the roofing Manufacturer.

2. Closures and fasteners shall conform to the roofing

Manufacturer's standards compatible with the roof covering finish.

3. INSTALLATION

a. Installation shall conform to the Roofing Manufacturer's details and instructions as shown on the assembly drawings together with accepted trade practices.

2.4 FELT PAPER AND MEMBRANE

A. Felt paper shall be asphalt saturated, weighing not less than 30 pounds per square.

B. Ice dam protection membrane shall be rubberized asphalt integrally bonded to sheet polyethylene, 40 mil thickness, meeting ASTM D1970.

PART 3.0 - EXECUTION

3.1 EXISTING ROOF SURFACE CONDITIONS

A. INSPECTION

1. Verify that installation may be made in accordance with approved shop drawings and Manufacturer's instructions.

3.2 INSTALLATION

A. Install all components and adhere all components firmly in place in complete accordance with the roof manufacturer's recommendations.

B. Remove protective strippable plastic film when and as instructed by metal roof Manufacturer.

C. Replace all panels damaged as a result of installer's failure to comply with roofing Manufacturer's instructions.

END OF SECTION

SECTION 5 - POLYVINYL-CHLORIDE (PVC) MEMBRANE ROOFING

PART 1 - GENERAL

1.2 DEFINITIONS

A. Roofing Terminology: Definitions in ASTM D 1079 and glossary in NRCA's "The NRCA Roofing Manual: Membrane Roof Systems" apply to work of this Section.

1.3 ACTION SUBMITTALS

A. Product Data: For each type of product.

1. For insulation and roof system component fasteners, include copy of FM Approvals' RoofNav listing.

B. Shop Drawings: Include roof plans, sections, details, and attachments to other work, including the following:

1. Layout and thickness of insulation.

2. Base flashings and membrane terminations.

3. Tapered insulation thickness and slopes.

4. Roof plan showing orientation of steel roof deck and orientation of roof membrane, fastening spacings, and patterns for mechanically fastened roofing system.

5. Insulation fastening patterns for corner, perimeter, and field-of-roof locations.

6. Tie-in with air barrier.

1.4 INFORMATIONAL SUBMITTALS

A. Product Test Reports: For roof membrane and insulation, tests performed by independent qualified testing agency indicating compliance with specified requirements.

1.5 QUALITY ASSURANCE

A. Manufacturer Qualifications: A qualified manufacturer that is UL listed for roofing system identical to that used for this Project.

B. Installer Qualifications: A qualified firm that is approved, authorized, or licensed by roofing system manufacturer to install manufacturer's product and that is eligible to receive manufacturer's special warranty.

1.6 FIELD CONDITIONS

A. Weather Limitations: Proceed with installation only when existing and forecasted weather conditions permit roofing system to be installed according to manufacturer's written instructions and warranty requirements.

PART 2 - PRODUCTS

2.1 PERFORMANCE REQUIREMENTS

A. General Performance: Installed roofing and base flashings shall withstand specified uplift pressures, thermally induced movement, and exposure to weather without failure due to defective manufacture, fabrication, installation, or other defects in construction. Roof system and flashings shall remain watertight.

1. Accelerated Weathering: Roof membrane shall withstand 2000 hours of exposure when tested according to ASTM G 152, ASTM G 154, or ASTM G 155.

2. Impact Resistance: Roof membrane shall resist impact damage when tested according to ASTM D 3746, ASTM D 4272/D 4272M, or the "Resistance to Foot Traffic Test" in FM Approvals 4470.

B. Material Compatibility: Roofing materials shall be compatible with one another and adjacent materials under conditions of service and application required, as demonstrated by roof membrane manufacturer based on testing and field experience.

C. ENERGY STAR Listing: Roofing system shall be listed on the DOE's ENERGY STAR "Roof Products Qualified Product List" for low -slope roof products.

D. Energy Performance: Roofing system shall have an initial solar reflectance of not less than 0.70 and an emissivity of not less than 0.75 when tested according to CRRC-1.

E. Fire-Resistance Ratings: Comply with fire-resistance-rated assembly designs indicated. Identify products with appropriate markings of applicable testing agency.

2.2 POLYVINYL CHLORIDE (PVC) ROOFING

A. PVC Sheet: ASTM D 4434/D 4434M, Type III, fabric reinforced.

1. Manufacturers: Subject to compliance with requirements, provide products by one of the following:

2. Basis-of-Design Product: Subject to compliance with requirements, provide Tremco Roofing; Tremply KEE FB with Tremco BURmastic Composite Ply Premium base sheet or comparable products by one of the following:

a. Carlisle SynTec Incorporated.

b. Duro-Last Roofing, Inc.

3. Thickness: 45 mils.

4. Exposed Face Color: White.

5. Attachment: Fully adhered

2.3 AUXILIARY ROOFING MATERIALS

A. General: Auxiliary materials recommended by roofing system manufacturer for intended use and compatible with other roofing components.

1. Adhesives and Sealants: Comply with VOC limits of authorities having jurisdiction.

B. Sheet Flashing: Manufacturer's standard sheet flashing of same material, type, reinforcement, thickness, and color as PVC sheet.

C. Prefabricated Pipe Flashings: As recommended by roof membrane manufacturer.

D. Roof Vents: As recommended by roof membrane manufacturer.

1. Size: Not less than 4-inch diameter.

E. Bonding Adhesive: Manufacturer's standard.

F. Slip Sheet: Manufacturer's standard, of thickness required for application.

G. Metal Termination Bars: Manufacturer's standard, predrilled stainless steel or aluminum bars, approximately 1 by 1/8 inch thick; with anchors.

H. Miscellaneous Accessories: Provide pourable sealers, preformed cone and vent sheet flashings, preformed inside and outside corner sheet flashings, T-joint covers, lap sealants, termination reglets, and other accessories.

PART 3 - EXECUTION

3.1 EXAMINATION

A. Examine substrates, areas, and conditions, with Installer present, for compliance with requirements and other conditions affecting performance of the Work.

1. Verify that roof openings and penetrations are in place, curbs are set and braced, and roof-drain bodies are securely clamped in place.

2. Verify that wood blocking, curbs, and nailers are securely anchored to roof deck at penetrations and terminations and that nailers match thicknesses of insulation.

3.2 PREPARATION

A. Clean substrate of dust, debris, moisture, and other substances detrimental to roofing system installation according to roofing system manufacturer's written instructions. Remove sharp projections.

3.3 ROOFING INSTALLATION, GENERAL

A. Install roofing system according to roofing system manufacturer's written instructions, FM Approvals' RoofNav assembly requirements, and FM Global Property Loss Prevention Data Sheet 1-29.

POLYVINYL-CHLORIDE (PVC) ROOFING

B. Complete terminations and base flashings and provide temporary seals to prevent water from entering completed sections of roofing system at end of workday or when rain is forecast. Remove and discard temporary seals before beginning work on adjoining roofing.

C. Install roof membrane and auxiliary materials to tie in to existing roofing to maintain weather tightness of transition[ and to not void warranty for existing roofing system].

3.4 ADHERED ROOFING INSTALLATION

A. Adhere roof membrane over area to receive roofing according to roofing system manufacturer's written instructions.

B. Unroll roof membrane and allow to relax before installing.

C. Accurately align roof membrane, and maintain uniform side and end laps of minimum dimensions required by manufacturer. Stagger end laps.

E. Bonding Adhesive: Apply to substrate and underside of roof membrane at rate required by manufacturer, and allow to partially dry before installing roof membrane. Do not apply to splice area of roof membrane.

F. Fabric-Backed Roof Membrane Adhesive: Apply to substrate at rate required by manufacturer, and install fabric-backed roof membrane.

G. In addition to adhering, mechanically fasten roof membrane securely at terminations, penetrations, and perimeter of roofing.

H. Apply roof membrane with side laps shingled with slope of roof deck where possible.

I. Seams: Clean seam areas, overlap roofing, and hot-air weld side and end laps of roof membrane and sheet flashings to ensure a watertight seam installation.

1. Test lap edges with probe to verify seam weld continuity.

Apply lap sealant to seal cut edges of roof membrane and sheet flashings.

2. Verify field strength of seams a minimum of twice daily, and repair seam sample areas.

3. Repair tears, voids, and lapped seams in roof membrane that do not comply with requirements.

J. Spread sealant bed over deck-drain flange at roof drains, and securely seal roof membrane in place with clamping ring.

3.5 BASE FLASHING INSTALLATION

A. Install sheet flashings and preformed flashing accessories, and adhere to substrates according to roofing system manufacturer's written instructions.

B. Apply bonding adhesive to substrate and underside of sheet flashing at required rate, and allow to partially dry. Do not apply to seam area of flashing.

C. Flash penetrations and field-formed inside and outside corners with cured or uncured sheet flashing.

D. Clean seam areas, overlap, and firmly roll sheet flashings into the adhesive. Hot-air weld side and end laps to ensure a watertight seam installation.

E. Terminate and seal top of sheet flashings and mechanically anchor to substrate through termination bars.

3.6 PROTECTING AND CLEANING

A. Protect roofing system from damage and wear during remainder of construction period. When remaining construction does not affect or endanger roofing, inspect roofing system for deterioration and damage, describing its nature and extent in a written report, with copies to Architect and Owner.

B. Correct deficiencies in or remove roofing system that does not comply with requirements, repair substrates, and repair or reinstall roofing system to a condition free of damage and deterioration at time of Substantial Completion and according to warranty requirements.

C. Clean overspray and spillage from adjacent construction using cleaning agents and procedures recommended by manufacturer of affected construction.

SECTION 6 - UNIT SKYLIGHTS

PART 1 - GENERAL

1.1 ACTION SUBMITTALS

A. Product Data: For each type of unit skylight.

1. Include construction details, material descriptions, dimensions of individual components and profiles, and finishes for unit skylights.

B. Shop Drawings: For unit skylight work.

1. Include plans, elevations, sections, details, and connections to supporting structure and other adjoining work.

1.2 INFORMATIONAL SUBMITTALS

A. Sample Warranty: For special warranty.

1.3 CLOSEOUT SUBMITTALS

A. Maintenance Data: For unit skylights to include in maintenance manuals.

1.4 QUALITY ASSURANCE

A. Manufacturer Qualifications: A manufacturer capable of fabricating unit skylights that meet or exceed performance requirements indicated and of documenting this performance by inclusion in lists and by labels, test reports, and calculations.

B. Installer Qualifications: An installer acceptable to unit skylight manufacturer for installation of units required for this Project.

1.5 WARRANTY

A. Special Warranty: Manufacturer agrees to repair or replace components of unit skylights that fail in materials or workmanship within specified warranty period.

1. Failures include, but are not limited to, the following:

a. Uncontrolled water leakage.

b. Deterioration of metals, metal finishes, and other materials beyond normal weathering.

c. Yellowing of acrylic glazing.

d. Breakage of polycarbonate glazing.

e. Deterioration of insulating-glass hermetic seal.

2. Warranty Period: Five years from date of Substantial Completion.

PART 2 - PRODUCTS

2.1 MANUFACTURERS

A. Basis of Design: Kalwall S-line Skylight B. Manufacturers: Subject to compliance with requirements, provide products by one of the following:

1. CPI International.

2. Kalwall Corporation.

3. Major Industries.

2.2 UNIT SKYLIGHTS

A. General: Provide factory-assembled unit skylights that include glazing, extruded-aluminum glazing retainers, gaskets, and inner frames and that are capable of withstanding performance requirements indicated.

B. Unit Shape and Size: As indicated on drawings.

C. Fiberglass-Sandwich-Panel Glazing: Manufacturer's standard with uniformly colored, translucent, fiberglass-reinforced-polymer face sheets permanently adhered to a grid core.

1. Color: White.

D. Condensation Control: Fabricate unit skylights with integral internal gutters and nonclogging weeps to collect and drain condensation to the exterior.

E. Thermal Break: Fabricate unit skylights with thermal barrier separating exterior and interior metal framing.

2.3 ALUMINUM FINISHES

A. Clear Anodic Finish: AAMA 611, or thicker.

PART 3 - EXECUTION

3.1 EXAMINATION

A. Examine openings, substrates, structural support, anchorage, and conditions, with Installer present, for compliance with requirements for installation tolerances and other conditions affecting performance of the Work.

B. Proceed with installation only after unsatisfactory conditions have been corrected.

3.2 INSTALLATION

A. Coordinate installation of unit skylight with installation of substrates, vapor retarders, roof insulation, roofing membrane, and flashing as required to ensure that each element of the Work performs properly and that combined elements are waterproof and weathertight.

B. Comply with recommendations in AAMA 1607 and with manufacturer's written instructions for installing unit skylights.

C. Install unit skylights level, plumb, and true to line, without distortion.

D. Anchor unit skylights securely to supporting substrates.

E. Where aluminum surfaces of unit skylights will contact another metal or corrosive substrates, such as preservative-treated wood, apply bituminous coating on concealed metal surfaces or provide other approved permanent separation recommended in writing by unit skylight manufacturer.

3.3 CLEANING

A. Clean exposed unit skylight surfaces according to manufacturer's written instructions. Touch up damaged metal coatings and finishes.

B. Remove excess sealants, glazing materials, dirt, and other substances.

C. Remove and replace glazing that has been broken, chipped, cracked, abraded, or damaged during construction period.

D. Protect unit skylight surfaces from contact with contaminating substances resulting from construction operations.

E. Unit Skylight Operating System: Clean and lubricate joints and hardware. Adjust for proper operation.

SECTION 7 – INTERIOR WORK REQUIRED

A. Interior building work is required, including drywall work, carpet tiles, ceiling tiles, bamboo flooring, wood work, trim work, painting, and any incidental work.

Remove and replace drywall sections that are damaged by moisture in concurrence with the on-site Government representative.

Interior drywall materials and installation shall comply with applicable requirements of

GA-216 "Application and Finishing of Gypsum Board" by the Gypsum Association, and

Installed per the recommendations of the manufacturer. Retape all seams and install all drywall accessories (trimwork), and re-mud all areas as required before painting the walls. Use the specified products or approved equal.

B. Perform the following interior work:

Administrative building

Vestibule:

100 sqft of finished gypsum board (ceiling)

100 sqft of Industrial Strength Commercial Carpet Tiles to match existing

100 sqft of ¾” X 6” Smooth Face Beveled Western Red Cedar wall cladding for interior wall to match

Foyer area:

300 sqft of Pre Finished Vertical Natural Bamboo flooring with Treffert High

Performance Coating to match existing

80 linear ft of 1” X 4” pine baseboard to match

Visitor Center

West foyer entrance hallway:

800 sqft of Pre Finished Vertical Natural Bamboo flooring with Treffert High

Performance Coating to match existing

180 linear ft of 1” X 4” pine baseboard to match

500 sqft of finished gypsum wallboard

4 gallons of interior primer (Prep Rite High Build primer or comparable)

4 gallons of Eg-Shel, interior latex paint to match (Benjamin Moore Aura grade or comparable)

Eagle Exhibit Area / Skylight:

200sqft finished of gypsum board ceiling

200sqft mat insulation

2gallons of interior primer (PrepRite High Build primer or comparable)

2gallons of Eg-Shel interior latex paint to match (Benjamin Moore Aura grade or comparable)

APPENDIX

Attachment 1 – Drawing of roof areas to be replaced