B08_Atttachment_1_SOW_Roof_Replacement_GATE.pdf

Statement of Work Roof Replacement at four NPS quarters buildings at the Jamaica Bay Unit in Gateway NRA

STATEMENT OF WORK

1.0 Background

2.0 Scope

3.0 Objectives

4.0 Tasks

4.1 Building 106

4.1.1 Site Conditions and Demolition

4.1.2 Roof Replacement Preparation and Underlayment 10:12 Roof

4.1.3 Asphalt Shingle Placement 10:12 Roof

4.1.4 Roof Replacement Preparation and Underlayment 1st floor 3:12 Roof

4.1.5 Standing Seam Metal Roof Placement 1st Floor Entry Roofs

4.1.6 Gutters and Downspouts

4.2 Building 268, 269, 270 Floyd Bennett Field

4.2.1 Site Conditions and Demolition

4.2.2 Roof Replacement Preparation and Underlayment 5:12 Roof

4.2.3 Asphalt Shingles Placement

4.2.4 Gutters and Downspouts

5.0 Requirements

5.1 Roof Covering Materials Building 106

5.2 Roof Covering Materials Buildings 268, 269, 270

5.3 Job Site Requirements

6.0 Deliverables

6.1 Division 1 Submittals

6.2 Product Submittals

7.0 Government-Furnished Property

8.0 Security

9.0 Place of Performance

10.0 Period of Performance

11.0 Evaluation Factors

12.0 Payment

13.0 Site Plan, Maps and Addenda

14.0 Project Closeout

15.0 Substantial Completion and Final Inspection

1.0 Background

This action is proposed to replace roofs at four NPS Government Quarters buildings at the Jamaica Bay Unit.

Building 106 was originally constructed in 1919 by the US Army to house Noncommissioned Officers at Fort Tilden. The house is a two-story Colonial Revival style duplex. The East and West Elevation originally featured full length porches that have since been enclosed. Building 106 was the only housing unit positioned along Rockaway Beach Boulevard.

Buildings 268, 269, and 270 are located on the Floyd Bennett Field Site. All three of the buildings were constructed by the US Navy to house service members in the late 1960’s. These units have multiple layers of shingles installed on the roof deck.

2.0 Scope

This project is intended to perform roof replacement on 4 NPS housing buildings. All four roofs have exceeded the period of serviceability and are leaking. The existing roofs will be removed, and damaged sections of roof deck will be replaced. New underlayment, flashing, and roofing material will be installed to manufacturer specifications.

3.0 Objectives

This project will provide new roof systems for the 4 buildings to eliminate leaks causing damage to the roof structure and the interior and exterior finishes.

4.0 Tasks

4.1 Building 106, Fort Tilden

4.1.1 Site Conditions and Demolition

A. Contractor will supply all labor, materials, tools, and equipment to perform the tasks outlined in this section of the SOW document. All materials will meet ASTM standards for New York City Wind Exposure D. All equipment will meet OSHA and ANSI safety standards.

B. Before work begins, the Contractor shall visit and survey the site and the surrounding areas. All environmental and human factors that could be adversely impacted should be noted and reported to the Contract Officer or their representative. These factors could include, but are not limited to, residents, visitors or pets entering the work area and possible damage to existing vegetation. The Contractor shall be liable for any damage to existing plants, trees, buildings, and any personal or government property damaged by roofing work.

C. The existing underlayment and asphalt shingles will be removed from the building. The Contractor is responsible for providing a debris receptacle to dispose of construction debris. All debris will be disposed of outside of the park in accordance with Federal, State and Local laws and regulations.

D. An inspection from the attic of the structure revealed that the wood plank deck and the common framed rafters are serviceable. When the underlayment is removed, the Contractor will notify the Contract Officer or their representative of any damage to the roof deck that needs to be remediated. If damage is found to the roof deck, the damage should be corrected with in kind materials.

4.1.2 Roof Replacement Preparation and Underlayment 10:12 Roof

A. Crickets shall be installed on the ridge side of two brick chimney chases.

B. Copper flashing shall be installed at the roof intersection with brick chimney chase.

C. VTR penetrations shall be flashed with rubber boot flashing or approved alternate material.

D. Copper Drip Edge shall be installed to manufacturer’s standards .

4.1.3 Asphalt Shingle Placement 10:12 Roof

A. GAF Slateline Asphalt Shingles, or equivalent, shall be fastened with Stainless Steel Roofing Nails that comply with ASTM F1667 following manufacturer’s specifications.

B. Shingle installation shall include a ridge cap at the high ridge and on the crickets.

4.1.4 Roof Replacement Preparation and Underlayment 1st floor 3:12 Roof

A. Copper Flashing shall be installed at the roof-wall intersection at the East and West Elevations.

B. Copper Drip Edge shall be installed to manufacturer’s standards.

C. Underlayment material shall comply with ASTM D226, Type 1 or ASTM D4869 and shall be installed to manufacturer’s specifications.

4.1.5 Standing Seam Metal Roof Placement 1st Floor Entry Roofs

A. Concealed fastener standing seam metal roof shall be attached to the roof deck in accordance with manufacturer’s specification.

B. Fasteners will be stainless steel fasteners sized to the manufacturer’s specification.

4.1.6 Gutters and Downspouts

A. Remove existing gutters at the East and West elevations of the building.

B. Install 5” K-Style 20 oz. Copper Gutters.

C. Remove the existing downspouts.

D. Install eight (8) Copper downspouts at the Four Corners of the Building.

4.2 Building 268, 269, 270 Floyd Bennett Field

Scope of work for buildings 268, 269, and 270 is typical.

4.2.1 Site Conditions and Demolition

A. Contractor will supply all labor, materials, tools, and equipment to perform the tasks outlined in this section of the SOW document. All materials will meet ASTM standards for New York City Wind Exposure D. All equipment will meet OSHA and ANSI safety standards.

B. Before work begins, the Contractor shall visit and survey the site and the surrounding areas. All environmental and human factors that could be adversely impacted should be noted and reported to the Contract Officer or their representative. These factors could include, but are not limited to, residents, visitors or pets entering the work area and possible damage to existing vegetation. The Contractor shall be liable for any damage to existing plants, trees, buildings, and any personal and government property damaged by roofing work.

C. All existing materials from the existing roof system shall be removed from the building. There are currently multiple layers of shingles on all three roofs at Floyd Bennett Field. The Contractor shall be responsible for providing a debris receptacle to dispose of construction debris. All debris shall be disposed of outside of the park in accordance with Federal, State and Local laws and regulations.

D. Contractor will price and perform as needed up to 1600 square feet of roof deck material using in kind material.

4.2.2 Roof Replacement Preparation and Underlayment 5:12 Roof

A. Galvanized Steel Flashing shall be installed at the roof intersection with brick chimney chase.

B. Galvanized Steel Valley lining will be installed to shingle manufacturer’s specifications at open valleys behind the

East elevation gables.

C. VTR penetrations shall be flashed with rubber boot flashing or approved alternate material.

D. Ridge vent shall be installed to manufacturer’s specification at the long roof ridge.

E. Drip Edge shall be installed to manufacturer’s standards.

4.2.3 Asphalt Shingles Placement

A. GAF Timberline Shingles, or equivalent, shall be fastened with Stainless Steel Roofing Nails that comply with ASTM F1667 following manufacturer’s specifications attachment in a 120 MPH wind zone.

4.2.4 Gutter and Downspout replacement

A. Removal all gutters and downspouts.

B. Install new galvalume gutters on the East and West Elevations of the Buildings.

C. Install four (4) new downspouts at each building.

5.0 Requirements

5.1 Roof Covering Materials Building 106

A. Shingles included in the contractor’s bid shall meet the following standards:

1) UL listed Class A Shingle

2) Meet specifications for ASTM D3161, Class F

3) Meet Specifications for ASTM D3018 Type 1

B. Asphalt shingles bid shall have the appearance of historic slate roof material. Color to be determined based on successful bidder’s product submittal.

C. Low roof shall be covered with concealed fastener standing seam metal. Color to be determined based on the successful bidder’s product submittal.

5.2 Roof Covering Materials Buildings 268, 269, 270

A. Shingles shall be dimensional shingles. Color to be determined by the successful bidder’s product submission.

B. Shingles included in the contractor’s bid will be meet the following standards

1. UL listed Class A Shingle

2. Meet specifications for ASTM D3161, Class F

3. Meet Specifications for ASTM D3018 Type 1

5.3 Job Site Requirements

A. Habitats: Protect natural habitats and ecological systems.

B. Waste Management Goals: Employ processes that ensure the generation of as little waste as possible.

Waste disposal in landfills shall be minimized.

C. Work will take place between the hours of 8:00 AM and 5:00 PM, Monday through Friday unless authorized in advance by the Contracting Officer.

D. Contractor will be responsible for providing portable sanitation units at the job sites.

E. All work on Fort Tilden Building 106 will be completed in conformance with the Secretary of the

Interior Standards for the Treatment of Historic Properties.

6.0 Deliverables

6.1 Division 1 Submittals

The following submittals shall be forwarded to the Contract Officer within 2 weeks of award. The government shall review and return Division 1 submittals within 2 calendar weeks of receipt.

1. Safety Plan

2. Letter designating the Project Superintendent or Foreman

3. Construction Schedule

4. List of any subcontractors working on the project

5. Quality Control Plan

6.2 Product Submittals

The following product submittals shall be forwarded to the contract officer within 3 weeks of award. The Government shall review and return Product Submittals within 2 calendar weeks of receipt.

1. Slate look asphalt shingles product data to include color charts.

2. Dimensional shingles product date to include color charts.

3. Concealed fastener standing seam metal panels product date to include color charts.

4. Underlayment

5. Fasteners

6. Copper flashing

7. Copper drip edge

8. Galvanized steel flashing

9. Galvanized drip edge.

10. Gutters and downspouts

7.0 Government Furnished Property

There will be no government furnished property for this Statement of Work.

8.0 Security

There are no specific security requirements for this Statement of Work. No building access is available.

9.0 Places of Performance

A. Work will be performed at Building 106, located on Heinzelman Road on Fort Tilden.

B. Work will be performed at Building 268, 269, and 270, located on Enterprise Avenue on Floyd Bennett Field.

10.0 Period of Performance

All work must be completed between September 15, 2023-December 15, 2023.

11.0 Evaluation Factors

A. The successful bidder shall provide 3 relevant project references.

B. The successful bidder shall provide a completed Contract Price Schedule.

C. The Primary Contractor shall hold a Roofing Trade License.

D. The successful bidder shall provide a project schedule based on product lead times.

12.0 Payment

A Schedule of Values shall be furnished by the contractor before the start of work. Payments shall be based on work completed per the SOV.

14.0 Site Plan and Maps

Maps and photographs of the work areas are included with the bid package.

13.0 Project Closeout

A. Before scheduling the final inspection, remove all tools, equipment, surplus materials, and rubbish.

B. Revegetate areas that are damaged due to the work of this contract to original condition.

C. The contractor shall leave the site clean and free of left-over materials. At time of final inspection, project shall be thoroughly clean and ready for use.

D. The contractor shall provide 2 bundles of slate look shingles for attic stock.

E. The Contractor shall provide 6 bundles of three-tab shingles for attic stock.

The following warranty information shall be submitted within 2 weeks of final acceptance of work.

1. One-year installation warranty

2. Manufacturers’ materials warranty

15.0 Substantial Completion and Final Inspection

Submit written certification that project, or designated portion of project, is substantially complete, and request in writing a final inspection. Upon receipt of written request that project is substantially complete, the Contracting Officer or his/her designated representative, will proceed with inspection within 10 days of receipt of request or will advise the Contractor of items that prevent the project from being designated as substantially complete.

When work is determined to be substantially complete, the Contracting Officer or his/her designated representative, will prepare a list of deficiencies ("Punch List") to be corrected before final acceptance. The Contracting Officer or his/her designated representative will issue a Letter of Substantial Completion. If work is not determined to be substantially complete, the Contracting Officer will notify the Contractor in writing. After completing work, the Contractor shall resubmit certification and request a new final inspection.

If, following final inspection, the work is determined to be substantially complete, the Contracting Officer or his/her designated representative will prepare a list of deficiencies to be corrected before final acceptance and issue a Letter of Substantial Completion. Contractor shall complete the work described on the list of deficiencies within 30 calendar days, as weather permits. If the Contractor fails to complete the work within this time frame, the Contracting Officer or his/her designated representative may either replace or correct the work with an appropriate reduction in the contract price or charge for re-inspection costs.

When all deficiencies have been corrected and the written warranty has been received, the Contracting Officer or their representative will issue a Letter of Acceptance.