Attachment 4 Bldg 46 - CLIN 0001 Base.pdf

Statement of Work (SOW) Contract - TBD– TO# TBD Repair Various Roofs – B46

07 Aug 2026

CLIN 0001

I. Purpose:

Provide all material and labor to demolish existing roof, as the modified bitumen roof that is existing has come to the end of its serviceable life and is in need of replacement

II. Scope or Mission:

Under this RFP, the contractor shall supply all tools, qualified labor, materials, equipment, supplies and supervision necessary to demolish the existing roof coating, flashings, sheet metal drip edge, and rotted nominal lumber and replace with like in kind for a weather tight roof with a 20 year NDL (No Dollar Limit) warranty from the manufacturer on modified bitumen roofs, and a 15 year NDL warranty on fluid applied roofing systems. All work shall be accomplished in strict compliance with all applicable federal, state, and local regulations, as well as manufacturer specifications and the requirements contained within all of the supplied contract documents and specifications, even those not listed in this SOW (Statement of Work). All equipment and materials shall be submitted for Government approval prior to procurement and installation.

The contractor shall be responsible for restoring construction site to its original or better condition.

Any damage done by the contractor or subcontractor to any existing pier, vessel, pavement, buildings, fences, curbs, streets, driveways, sidewalks, landscaping, utilities, structures, and other improvements shall be the sole responsibility of the contractor to repair or replace at the discretion of the Contracting Officer

III. Period of Performance:

See SF1449 for overall project PoP

IV. Background:

The Government has identified the roof at B46 as being at the end of its serviceable life and is in need of replacement. The roof has severe blistering throughout and is leaking in many places due to the age of the existing modified bitumen roof system.

B46 Roof A – Approximately 9,500 SF (Liquid Applied Roof System)

V. Performance Objectives:

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a. Contractor shall conduct a limited lead based paint and asbestos survey on ALL construction materials that will be disturbed under this solicitation to ensure no ACM (Asbestos Containing Material) or LBP (Lead Based Paint) are present. Submit Limited ACM and LBP environmental survey to the Government for review.

b. Demolish existing modified bitumen roofing system to include cap sheet, base sheet, all fasteners, all sheet metal flashings associated with roof work, all poly iso insulation layers and cover boards to expose the roof decking for inspection. Replace any roof decking that is rusted or in need of repair. Government estimates that 10% of roof decking will need to be replaced. Any excess shall be a credit to the Government

c. Contractor shall provide a complete before and after infrared moisture survey of roof A (approximately 9,500 SF) to the Government. Submit survey and all findings to the Government.

d. All lightning protection systems that are removed during construction shall be re-installed by a company with a certified lightning protection engineer that can certify the system and provide documentation that the system is functional after re-installation. All lightning protection work shall follow NFPA 780 standards that outline the installation of lightning protection systems

e. Contractor shall install new roofing system per manufacturer’s specifications. Contractor is responsible for all measurements and calculations for proposal purposes.

f. Demolish any existing roof penetrations that can be demolished not to return. Repair deck with like in kind decking material and fasteners per manufacturer specifications. Work with Government PM/CO to figure out which penetrations can be demolished.

g. Contractor to submit site specific 35% design with details for B46, include industry standard design details (wind uplift calculations, cricket design if necessary, terminations, expansion joints, flashing details, roof system cross section, parapet detail, curb detail, etc)

h. Contractor shall provide and install new access hatch that is like in kind to existing at each building where required on this solicitation. Access hatch shall be installed prior to mod bit roofing system and shall be flashed with similar material as existing roofing system.

i. Contractor shall trim all trees overhanging any roof on this solicitation to an appropriate distance away from the roof surface or building. Consult with COR prior to trimming any trees or bushes.

j. Contractor shall provide and install new cold applied modified bitumen roofing system to comprise of 2 – 2 inch layers of poly iso insulation, 1 – ½ inch cover board (cover board to be DensDeck or equivalent), new cant strips, base sheet, cap sheet, adhesive, fasteners, and any applicable metal flashings (termination bar, coping, gravel stop, fascia, z flashing, drip edge, wall to roof flashing, etc) to deliver a watertight roofing system with 20 year NDL warranty. All products utilized in

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roofing system shall be per manufacturers specifications. All products utilized in roofing system shall be Soprema, GAF, or equivalent.

k. All existing wall to roof flashings that are to be re-used shall be re-sealed with the proper sealant and fasteners where applicable per industry standards. Existing sealant shall be removed prior to applying new sealant. All roof penetrations that are to remain, shall be flashed and sealed per manufacturer specifications. All other sheet metal flashings associated with roof work shall be new, like in kind material.

l. At B46, if the stainless steel drip edge is in good condition and can be re-used, contractor to try and salvage to the greatest extent possible. Where stainless steel drip edge is not re-usable, contractor to replace with like in kind material.

m. Contractor shall ensure proper positive slope and drainage on all roofs in this solicitation per industry standards. Poly iso insulation may have to be tapered or crickets installed in specific locations to achieve positive drainage

n. At Roof A of B46, approximately 9,500 SF, contractor shall provide and install new fluid applied roofing system per manufacturer’s specifications. Contractor is responsible for all measurements and calculations for proposal purposes. Fluid applied roofing system shall be Gaco or approved equivalent. Fluid applied roofing system. Roofing system shall consist of GacoFlex U910 Aromatic Urethane base coat or approved equivalent applied at a rate of 1.5 gallons per 100 SF, GacoFlex HER Urethane Flashing Grade or approved equivalent on all flashing seams, corners, and laps, and GacoFlex S4200 Silicone top coat or approved equivalent applied at a rate of 1.25 gallons per 100 SF. All products to be applied per manufacturer specifications

1. Contractor shall ensure all loose, damaged, missing, not adhered, bubbling, or broken areas of the existing modified bitumen roofing system are repaired and sealed per fluid applied roofing manufacturer specifications prior to fluid applied roofing system application. Mod bit repairs shall be cut out and repaired prior to installing fluid applied roofing system.

2. Contractor shall provide and install a complete system of compatible materials to create a seamless, waterproof, fully adhered fluid-applied roofing system over new or existing metal roofing, modified bitumen roofing, or concrete roof deck. Finish coat shall be white in color for maximum reflectivity. Fluid applied roofing system shall have a minimum 15 year NDL warranty.

3. Manufacturer representative for both roofing systems (fluid applied and modified bitumen) shall visit project site a minimum of three (3) times and provide progress inspection reports that shall be formally submitted to the Government.

o. At B46, contractor shall re-use all existing stainless steel gutters, downspouts, and associated material. Contractor shall repair any downspouts, gutters, hangers, leaking joints with like in kind

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materials to deliver a water tight gutter system to the Government. Gutters at B46 shall have aluminum mesh gutter guards installed in an effort to keep leaves and other debris out of gutters.

Contractor shall clean gutters prior to completion of roof to remove all debris. Contractor shall provide and install new concrete splash blocks where applicable.

p. Contractor shall remove all existing sealants, oils, adhesives from the wall to concrete deck joint on the small architectural concrete deck just below the roof. Contractor shall pressure wash the small concrete deck. Contractor shall then re-seal wall to concrete deck joint with appropriate backer rod and polyurethane joint sealant to form a water tight seal around the entire perimeter of the building. Contractor shall coat the concrete deck with appropriate block filler coating on the top and bottom and seal any remaining joints or cracks with appropriate polyurethane sealant.

q. Contractor shall replace all rotten lumber encountered during roof demolition with new like in kind pressure treated nominal lumber. Replacement of nominal lumber to include all bracing, supports, cleats, nailers, coping, framing, etc. Contractor shall assume 1500 board feet at B46 is in need of repair or replacement, any excess shall be a credit to the Government.

r. Contractor shall replace all exhaust/drain pipe boots with new like in kind exhaust/drain pipe boots.

All drain/exhaust pipe boots shall be flashed per manufacturer specifications.

s. Contractor shall demolish two (2) existing roof access ladders on the West side of B46 and replace with new OSHA approved access ladder with a cage and platform that is fastened to structural members of B46 roof. Fasteners shall be properly sized for weight load of ladder. Location of new access ladder TBD by Government. Ladder shall be painted with a high-quality industrial enamel designed for exterior use, color to be Safety Yellow.

t. Provide and install warranty placard as outlined in specifications, location TBD by COR

VI. Operating Constraints:

a. Reference specifications provided

i) 07 01 50.19 Preparation for Re-Roofing

ii) 07 22 00 Roof and Deck Insulation

iii) 07 52 00 SBS Mod Bit Membrane Roofing

iv) 07 60 00 Flashing and Sheet Metal

v) 07 71 00 Roof Specialties

vi) 07 84 00 Firestopping

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vii) 07 92 00 Joint Sealants

VII. Attachments:

a. B46 Roof Drawings

VIII. Submittals:

a. Progress/Construction Schedule

b. Activity Hazard Analysis

c. Product Data/SDS’s

d. Flashing Material

e. Pressure Treated Lumber

f. Gutters and Downspouts

g. Roof System (insulation, base sheet, cap sheet, adhesive)

h. Fluid applied roofing system

i. Fasteners with Plates

j. Sealants (to include firestopping)

k. Cant Strips

l. Ladder Shop Drawings

m. Anchors for Ladder

n. Paint (Safety Yellow – Enamel)

o. Block Filler

p. Access Hatch

q. Exhaust/Drain Pipe Boots

r. 35% Design

s. Manufacturer Inspection Reports

t. Crane Lift Plan

u. Fall Protection Plan

v. Manufacturer Material Cut Sheets & Instructions

w. Test Reports, Wind Uplift Calculations

x. Closeout Documents (Section XI/Warranty)

IX. Environmental:

a. Toxic Substances Control Act of 1976

X. Safety:

a. Lock-out/Tag-out required prior to performing any electrical work.

b. Hot work permit required if cutting, welding, grinding, etc.

c. Crane lift plan required where applicable

d. EM 385 1-1 Fall Protection Plan Required (site specific for each roof)

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e. Submit Activity Hazard Analysis (AHA) for activities not covered in the Contractor’s Accident Prevention Plan (APP).

XI. Closeout Documents:

a. Equipment specifications

b. Operation & maintenance manuals (O&Ms)

c. Spare parts material list

d. Warranties