Atch_1-PWS.pdf

140P5418R0009 Attachment 1

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Performance Work Statement Roof Replacement

Timucuan Ecological and Historic Preserve

Project Location: 13165 Mt Pleasant Rd, Jacksonville, Florida 32225, Duval County

** Any references to specific brand or model are for reference ONLY and comparable/compatible roofs that meets or exceeds the referenced characteristics. Those comparables will be reviewed as long as you clearly indicate the brand/type you feel meets or exceeds the specifications. Ensure to include product literature and color choices with your quote and include a realistic completion time in your quote.**

General Overview: Remove existing approximate 8250 S.F. asphalt shingle roof and install Forest Green Cee-Lock Standing Seam Roof at the headquarters building of Timucuan Ecological and Historic Preserve.

Replacement roof to match, exactly, existing Berridge Cee-Lock Standing Seam Roof at adjacent Park Curatorial/Museum Facility.

1. ASSEMBLY DESCRIPTION

A. The roofing assembly includes preformed sheet metal panels, related accessories, valleys, hips, ridges, eaves, corners, rakes, off set vents, miscellaneous flashing and attaching devices.

1.01 Submittals (Post Award)

A. Submit detailed drawings showing layout of panels, anchoring details, joint details, trim, flashing, and accessories. Show details of weatherproofing, terminations, and penetrations of metal work.

B. Submit a sample of each type of roof panel, complete with Forest green Satin factory finish C. Submit results indicating compliance with minimum requirements of the following performance tests:

1. Air infiltration ASTM E-1680-95

2. Water Infiltration ASTM E-1646-95

3. Wind Uplift – UL 90

D. Submit calculations with registered engineer seal, verifying roof panel and attachment method resists wind pressures imposed on it pursuant to applicable North Florida building codes.

1.02 Delivery, Storage and Handling

A. Upon receipt of panels and other materials, installer shall examine the shipment for damage and completeness.

B. Panels should be stored in a clean, dry place. One end should be elevated to allow moisture to run off.

C. Panels with strippable film must not be stored in the open, exposed to the sun.

D. Stack all materials to prevent damage and allow for adequate ventilation.

1.04 Warranty

A. Paint finish shall have a twenty year guarantee against cracking, peeling and fade (not to exceed 5 N.B.S. units).

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B. Galvalume material shall have a twenty year guarantee against failure to corrosion, rupture or perforation.

C. Applicator shall furnish guarantee covering water tightness of the roofing system for the period of two (2) years from the date of substantial completion.

2. PRODUCT

2.01 Acceptable Manufactures (Any references to brand or model are for reference only and comparable/compatible items will be reviewed as long as you clearly indicate the brand/type you feel meets or exceeds the specifications. Ensure to include product literature with your quote and include a realistic delivery time in your quote.

A. Berridge Manufacturing Company B. Substitutions shall fully comply with specified requirements

2.02 Sheet Metals

A. Prefinished Metal shall be hot-dipped galvanized – ASTM A446-85, Grade C G90 Coating - A525-86 24, Gauge core steel or prefinished Galvalume – ASTM 792-86, AZ55.

B. Unfinished metal shall be Grade C Galvalume ASTM 792-86, AZ 55 “Satin Finish”, Forest Green

C. Finish shall be [full strength Kynar 500 Fluorpolymer coating][Copper-Cote][Lead- Coat][Champagne] coating, applied by the manufacturer on a continuous coil coating line, with a top side dry film thickness of 0.70 to 0.80 mil over 0.25 to 0.35 mil prime coat, to provide a total dry film thickness of 0.95 to 1.25 mil. Bottom side shall be coated with primer with a dry film thickness of 0/25 mil. Finish shall conform to all tests for adhesion, flexibility, and longevity as specified by the Kynar 500 finish supplier.

D. Strippable film shall be applied to the topside of the painted coil to protect finish during fabrication, shipping and field handling. This strippable film must be removed before installation.

2.03 Accessory Materials

A. Fasteners: [Galvanized Steel][Stainless Steel][Cadmium Plated Steel] with washers where required.

B. Vinyl Weatherseal Insert C. Sealant

2.04 Fabrication

A. All exposed adjacent flashing shall be of the same material and finish as the roof panels.

B. Hem all exposed edges of flashing on underside, ½ inch.

2.05 Cee-Lock Standing Seam Panel

A. Panels shall have 1-1/2” high vertical legs, spaced 16-1/2” on center.

B. Standing Seam to be of an interlocking, “snap-lock” design.

C. Panels shall be site-formed with Portable roll former in continuous lengths from ridge to eave or factory-formed to maximum 40’.

D. Continuous Cee Rib to be 1-3/8” wide and 2-1/8” in height. Rib shall be connected to purlin with two #12-14 x 1” self-drilling/tapping fasteners [Cee-Clips at 3’-0” max].

E. Vinyl Weatherseal to be factory/machine-installed.

F. When required, panel assembly to bear Underwriter’s Laboratories Label UL 90, pursuant to

Construction Number 334 and applicable Fire ratings.

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G. Certification shall be submitted, based on independent testing laboratory, indicating no measureable water penetration or air leakage through the system when tested in accordance with ASTM E-1680-95 and ASTM E-1646-95.

3. EXECUTION

3.01 Inspection

A. Substrate:

1. Remove existing asphalt shingle roof

2. Examine plywood or wood decking to ensure proper attachment to framing.

3. Inspect roof deck to verify deck is clean and smooth, free of depressions, waves or projections, and properly sloped to valleys or eaves.

4. Verify roof openings, curbs, pipes, solar lighting tubes, sleeves, ducts or vents through roof are solidly set, cant strips and reglets in place, and nailing strips located.

5. Verify deck is dry, joints in wood deck to be solidly supported and nailed.

6. Inspect for any rotting or questionable sheathing. Provide findings to the COR.

Replacement will be in accordance with the possible addititve (see end of PWS for more details).

B. Water Ice Shield Underlayment

1. Ensure that all nail heads are totally flush with the substrate.

2. Verify water ice shield underlayment has been installed and solidly supported and adhering to wood deck surface in accordance with manufacturer’s standards. Ensure underlayment installed horizontally, starting at eave to ridge with manufacturer’s recommended overlap and endlaps. Provide ice and water shield membrane over entire roofing substrate.

3.02 Installation

A. Comply with manufacturers standard instructions and conform to standards set forth in the Architectural Sheet metal Manual published by SMACNA, in order to achieve a water tight installation.

B. Install panels in such a manner that horizontal lines are true and level and vertical lines are plumb.

C. Install starter and edge trim before installing roof panels.

D. Remove protective strippable film prior to installation of roof panels.

E. Attach panels using manufacturer’s standard clips and fasteners, spaced in accordance with approved shop drawings.

F. Install sealants for preformed roofing panels G. Roof venting to be “off-ridge” vents.

H. Do not allow panels or trim to come into contact with dissimilar materials.

I. Do not allow traffic on completed roof. If required, provide cushioned walk boards.

J. Protect installed roof panels and trim from damage caused by adjacent construction until completion of installation.

K. Remove and replace any panels or components which are damaged beyond successful repair.

L. Fabrication:

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1. Unless otherwise shown on Drawings or specified herein, fabricate panels in continuous one-piece lengths and fabricate flashings and accessories in longest practicable lengths.

2. Cut ridge flashing for tight, precise fit around ribs.

3. Maximum alignment variation is ¼” over 40’

3.03 Cleaning

A. Clean any grease, finger marks or stains from the panels per manufacturer’s recommendations.

B. Remove all scrap and construction debris from the site daily.

C. Conduct “police call” and magnet roll construction area for nails, screws, and sharp metal remnants from project.

Additive: SUBSTRATE (SHEATHING) REPAIR/REPLACEMENT: Price per square foot to include removal, disposal, and replacement in kind of rotted sections of substrate (sheathing) with new material. The full extent of rot present in the substrate may not be evident until the existing roof covering is removed. The contractor shall provide a price per square foot to replace all rotted substrate.

The COR or designated project inspector and the contractor shall jointly inspect the substrate following removal of the existing roof covering, and the contractor shall replace substrate as directed by the Contracting Officer via a written directive for an agreed upon quantity of square feet at the same unit price per square foot quoted herein (that will remain a fixed unit price for duration of contract).