C04 Attachment 1 C04 SOW R1_Roof Repair PMC OR.docx

Plant Materials Center (PMC), Corvallis OR Building Roof Repair Project

US Department of Agriculture (USDA)

Statement of Work (SOW) Plant Materials Center (PMC), Corvallis, OR Office Building Roof Repair Project

Contents

Project:

Corvallis Plant Materials Center (PMC) Office Building Roof Re-shingling Project

General Information

1.0 Scope of Work

The Contractor shall provide all labor, material, equipment, supervision, and management necessary to perform the required services in accordance with (IAW) the terms, conditions, specifications, and schedules outlined in this Statement of Work. All work shall be completed in a timely, efficient manner that meets applicable federal, state, and local regulations, as well as agency policies and performance standards.

The objective of this project is for the Contractor to provide professional roofing services for the comprehensive replacement of the existing asphalt shingle roof system and metal rain gutters on the USDA NRCS Corvallis Plant Materials Center (PMC) office building located at 3415 NE Granger Ave, Corvallis OR 97330. The repairs are to be completed to safeguard the facility’s long-term structural integrity and weather resistance, reduce the risk of water infiltration and related damage, improve the building's exterior appearance, and prolong the overall service life of the building’s roof. The Contractor shall complete the work through the full removal and replacement of all existing asphalt shingles and underlayment, a detailed inspection of the roof decking with repairs made as necessary, and the installation of a new, high‑quality asphalt shingle roofing system and accompanying rain gutters. The new rain gutters shall be painted to match the existing building trim, and all materials and workmanship shall meet or exceed current building codes and manufacturer requirements.

The Contractor shall properly dispose all old material and conduct a thorough site cleanup upon completion and final acceptance of the work. All work shall be completed IAW local building codes, applicable laws, and permitting.

All materials and supplies shall be of premium commercial grade and meet all industry standards for quality and lifespan. The Contractor shall submit a list of materials to be used to repair the roof no later than five (5) business days after contract award. This list will be reviewed and must be approved by Government personnel prior to beginning the work.

2.0 Background

The current roof shingles were installed approximately 22 years ago (2004), and no major roofing system overhauls have occurred since that time. The overall square footage of the roof is approximately 3,500 sq ft (see attached photographs of the building exterior). During the winter of 2025-2026, as the result of an extreme wind event, roof shingles were dislodged, flipped up and blown off the roof resulting in the roof decking (underlaying tarpaper and plywood) being exposed to the elements. The Government was able to provide a short-term solution by using an existing package of shingles to replace those blown off the roof by the wind. During the replacement, Government personnel discovered significant roof damage with increasing signs of advanced deterioration, to include, but not limited to, widespread shingle granule loss, curling and cracking of the asphalt shingles. There are currently no roof leaks and thus far the areas of the roof that were patched have remained in place, however this is a temporary solution to a permanent problem. The current weather environment poses a substantial risk to Government property, critical infrastructure, and employee safety and comfort, and will lead to increased maintenance costs for temporary repairs. The result for this requirement is to proactively address these roofing issues by replacing the existing shingles and underlaying tar paper to eliminate current and future vulnerabilities, provide superior protection against environmental elements for the next 30 years, reduce long-term maintenance expenditures, and ensure a secure, dry, and productive working environment for all personnel and Government property.

Contractor Requirements

3.0 Technical Requirements / Tasks

3.1 Site Preparation and Protection: Prior to commencement of work, the Contractor shall implement comprehensive site protection measures to ensure that old roofing debris and nails are not deposited on the ground and are placed on tarps or directly into an appropriate trash receptacle. All necessary safety protocols, including OSHA standards, shall be strictly adhered to, including the establishment of clearly marked work zones and fall protection systems.

3.2 Weather Conditions and Decking Protection: All roofing installation activities, including removal of existing materials, decking repairs, installation of underlayment and new shingles, and replacement of existing gutter system, shall be conducted only under suitable dry weather conditions and installed in accordance with manufacturer recommendations. Under no circumstances shall the exposed roof decking be left unprotected or exposed to precipitation (rain, snow) at any stage of the project. The Contractor shall implement proactive measures, such as staged removal and immediate application of underlayment or temporary waterproofing, to ensure the roof decking remains continuously dry and protected from moisture infiltration from the time of the old roof removal until the new roofing system is fully installed and watertight.

In the event of rain, snow, high wind, heavy dew or when adverse weather conditions threaten to compromise Contract employee safety and/or the quality and adhesion of the roofing material, the Contractor will cease work immediately. Once the adverse weather conditions have passed, the roof surface is dry and weather conditions are suitable for safe and proper installation, the Contractor may resume work and proceed to finalize the roof repairs.

3.3 Existing Roof System Removal: The Contractor shall completely and carefully remove all existing shingle layers, tar-paper underlayment, flashing (including vent, valley, and wall flashing), and any deteriorated roof accessories down to the structural roof decking (plywood). (This removal also includes the overhang on the west side of the building). If any of the roof decking is damaged, the Contractor shall replace the decking with similar material that matches the existing decking. The existing rain gutters shall be removed and replaced with a seamless aluminum type K-Style gutter system. Downspouts shall be placed in accordance with standard practices. All materials that were removed shall be promptly collected, contained, and disposed of off-site in accordance with all federal, state, and local environmental regulations.

3.4 Upon removal of the existing roof shingles, the Contractor shall conduct a thorough inspection of the exposed roof decking. Any plywood decking found to be soft, delaminated, water-damaged, or otherwise structurally compromised shall be replaced with new matching decking, fastened to meet local building code requirements. All fasteners protruding through the decking shall be properly addressed.

3.5 Underlayment and Edge Protection Installation: Install an ice and water shield membrane, such as Weatherlock ® G Granulated Self-Sealing Ice and Water Barrier by Owens Corning or equivalent, extending from the eaves up the roof slope a minimum of 36 inches and in all valleys and around penetrations. The remainder of the roof deck shall be covered with a synthetic underlayment, such as ProArmor® Synthetic Roof Underlayment by Owens Corning or equivalent, installed in accordance with manufacturer specifications, overlapping all seams by the recommendations and fastened appropriately. New drip edge flashing shall be installed at all eaves and rakes.

3.6 Flashing and Ventilation Installation: All existing flashing shall be replaced with new, properly bent and sealed flashing, at all penetrations, skylights, and wall intersections. This includes step flashing, counter flashing, and apron flashing as required. Replace continuous ridge vent system, if needed, along the full length of the ridge, ensuring adequate attic ventilation as per local building code.

3.7 Shingle Installation: Install new Architectural style laminate shingles, such as GAF Timberline HDZ in Barkwood or Owens Corning Duration in Brownwood, fastened in strict adherence to manufacturer's installation instructions and local building codes. Starter strips shall be installed at all eaves and rakes. Hip and ridge cap shingles shall be installed to match the main shingle product.

3.8 New Gutter Installation: The Contractor shall install a new aluminum seamless gutter system. The gutters shall be 5-inch K-style seamless aluminum with heavy-gauge aluminum construction, installed with appropriate pitch for positive drainage towards downspouts. Gutters shall be secured to the fascia using hidden hangers with screws spaced no more than 24 inches on center, ensuring a secure and level installation. Prior to installation or immediately following installation (as appropriate for paint adhesion and finish quality), all new gutters and downspouts shall be thoroughly cleaned, prepared, and painted to match the existing building trim color, as identified by the Government Project Manager. The Contractor shall use a high-quality, exterior-grade paint suitable for aluminum, applied in accordance with manufacturer's specifications to ensure durability and visual consistency. All painting shall result in a uniform, professional finish free from drips, runs, or inconsistencies.

If there is an option for pre-painted/pre-colored gutters, the Contractor shall provide samples to the Government for selection prior to installation.

3.9 Site Cleanup and Demobilization: Upon completion of all roofing work, the Contractor shall conduct a thorough cleanup of the entire work area, including the use of magnetic sweeps to collect all loose nails and metal debris. All equipment, tools, and remaining materials shall be removed from the site, leaving the premises clean and free of construction debris. Disposal of materials must follow all local environmental laws and regulations.

3.10 Final inspection and Closeout: Contractor shall notify the Contracting Officer Representative (COR) when the repairs have been completed to schedule a final inspection. Any discrepancies noted during the inspection shall be corrected by the Contractor within two (2) business days. Upon final approval by the COR, the Contractor shall submit the final invoice for payment. Additionally, the Contractor shall provide a two (2) year warranty as well as any applicable manufacturer warranties.

4.0 Government Furnished Property: N/A

5.0 Deliverables / Schedule:

Key Deliverables

5.1 The Contractor shall provide the following deliverables to the Government in accordance with the specified timelines:

Project Execution Plan (PEP): The Contractor shall submit a project execution plan to the COR no later than five (5) business days after receipt of contract award. The plan will be reviewed and approved by the COR prior to the start of work. This plan shall include but not limited to:

· A detailed, itemized list of all proposed materials, including manufacturer, product name, color (e.g., shingle type and color), and technical specifications for all roofing components (shingles, underlayment, vents, etc.). The Contractor shall also identify any potential alternative materials if the primary selection is subject to availability constraints, along with their specifications.

· A detailed project schedule, outlining key milestones from mobilization to final demobilization, including proposed start and completion dates for all major phases of work (e.g., material delivery, old roof removal, decking inspection/repair, new roof installation, gutter painting and installation, cleanup, and final inspection). This schedule shall clearly indicate the critical path and any dependencies.

6.0 Travel – Contractor travel and related expenses will not be reimbursed by the Government. The Contractor is responsible for covering all travel and transportation costs associated with performing this project.

7.0 Contractor’s Key Personnel – The Contractor shall appoint an onsite lead/project manager that will be responsible for overseeing and coordinating all Contractor activities, personnel, and resources. Any proposed changes to key personnel or to the project schedule must be communicated to and approved by the COR and the Government project team before implementation. The onsite lead shall also maintain an up‑to‑date roster of all Contractor personnel assigned to the site and provide it to the COR upon request.

8.0 Security Requirements – The Contractor shall follow all Government access and security protocols while conducting work.

image1.png