07_53_16_-_Chlorosulfonate-Polyethylene_(cspe)_Roofing.pdf

GRTE – 149677-WATER

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CHLOROSULFONATE-POLYETHYLENE (CSPE) ROOFING

SECTION 07 53 16 - CHLOROSULFONATE-POLYETHYLENE (CSPE) ROOFING

PART 1 - GENERAL

1.1 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 01 Specification Sections, apply to this Section.

1.2 SUMMARY

A. Section Includes:

1. Loosely laid and ballasted chlorosulfonate-polyethylene (CSPE) roofing system.

B. Related Sections:

1. Section 07 92 00 - Joint Sealants: For joint sealants, joint fillers, and joint preparation.

2. Section 03 30 00 – Cast In Place Concrete

3. Section 03 41 00 – Precast Structural Concrete

4. Section 31 23 23.43 - Geofoam: Installation of structural foam above the tank roof liner.

5. Section 33 46 00 - Subdrainage: Application of prefabricated drainage composite over the roof liner.

1.3 DEFINITIONS

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

1.4 PREINSTALLATION MEETINGS

A. Preliminary Roofing Conference: Before starting installation of the CSPE roof liner, conduct a phone or onsite conference meeting. Notify CO one(1) week prior to conference.

1. Meet with CO, roofing Installer and roofing system manufacturer's representative.

2. Review methods and procedures related to roofing installation, including manufacturer's written instructions.

3. Review and finalize construction schedule, and verify availability of materials, Installer's personnel, equipment, and facilities needed to make progress and avoid delays.

4. Review deck substrate requirements for conditions and finishes, including flatness and fastening.

5. Review structural loading limitations of roof deck during and after roofing.

6. Review roofing details, roof drainage, roof penetrations, access curbs, and condition of other construction that affects roofing system.

7. Review governing regulations and requirements for insurance and certificates if applicable.

8. Review temporary protection requirements for roofing system during and after installation.

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9. Review roof observation and repair procedures after roofing installation.

1.5 ACTION SUBMITTALS

A. Product Data: For each type of product.

B. Shop Drawings: For roofing system. Include plans, elevations, sections, details, and attachments to other work, including:

1. Base attachment and membrane terminations.

2. Installation of the roof membrane and flashing installation at concrete access curbs and at vent piping.

3. Roof plans showing orientation of concrete topping slab and orientation of roofing and fastening spacings and patterns for mechanically fastened roofing.

1.6 INFORMATIONAL SUBMITTALS

A. Qualification Data: For manufacturer’s supplied Installers and Representatives.

B. Manufacturer Certificates: Signed by roofing manufacturer certifying that roofing system complies with requirements specified in "Performance Requirements" Article.

1. Submit evidence of complying with performance requirements.

C. Field quality-control reports.

D. Sample Warranties: For manufacturer's special warranties.

1.7 CLOSEOUT SUBMITTALS

A. Maintenance Data: For roofing system to include in maintenance manuals.

1.8 QUALITY ASSURANCE

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

B. Installer Qualifications: A qualified firm, or onsite manufacturer’s representative, 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.

1.9 DELIVERY, STORAGE, AND HANDLING

A. Deliver roofing materials to Project site in original containers with seals unbroken and labeled with manufacturer's name, product brand name and type, date of manufacture, approval or listing agency markings, and directions for storing and mixing with other components.

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B. Store liquid materials in their original undamaged containers in a clean, dry, protected location and within the temperature range required by roofing system manufacturer. Protect stored liquid material from direct sunlight.

1. Discard and legally dispose of liquid material that cannot be applied within its stated shelf life.

1.10 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.

1.11 WARRANTY

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

1. Special warranty includes membrane roofing, fasteners and other components of roofing system.

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

PART 2 - PRODUCTS

2.1 MANUFACTURERS

A. Manufacturers: Burke Industries Inc., Conklin Company Inc. or approved equal.

B. Source Limitations: Obtain components including fasteners for roofing system from a source approved by membrane roofing manufacturer.

2.2 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. Roofing and base flashings shall remain watertight.

1. Breaking Strength: 270 lbs (ASTM D751)

2. Tear Propagation: 90 lbs (ASTM D751 Tongue Tear 8 x 8 sample)

3. Hydrostatic Pressure: 300 psi (ASTM D751 Method A, Procedure 1)

4. Puncture Resistance: 265 lbs (FTMS 101B, Method 231)

5. Bonded Seam Strength: 205 lbs (ASTM D751, Modified)

6. PlyAdhesion: 7 lbs/in-width (ASTM D41, Machine Method, Type A)

7. Ozone Resistance: ASTM D1149

8. Low Temperature: ASTM D2136

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

C. Exterior Fire-Test Exposure: Underwriters Laboratories (U.L.) approved for Class A and Class B fire rated construction.

2.3 CSPE ROOFING

A. CSPE: 3 ply, 1 ply reinforced, 60-mil thick, Hypalon flexible uncured sheet formed from CSPE, and as follows:

1. Liner shall be approved for potable water applications.

2. Deliver Hypalon liner to the project site in a single factory fabricated, heat seamed, panel.

Single panel shall be large enough to cover the entire tank.

3. Exposed Face Color: Light gray or Tan.

2.4 AUXILIARY ROOFING MATERIALS

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

1. Liquid-type auxiliary materials shall comply with VOC limits of authorities having jurisdiction.

2. Adhesives shall comply with the following limits for VOC content:

a. Multipurpose Construction Adhesives: 70 g/L.

b. Multi-Ply Roof Membrane Adhesives: 250 g/L.

c. Multi-Ply Roof Membrane Sealants: 450 g/L.

d. Nonmembrane Roof Sealants: 300 g/L.

e. Other Adhesives and Sealants: 250 g/L.

B. Sheet Flashing: 60-mil thick, reinforced CSPE, or as recommended by roofing system manufacturer for intended use.

C. Bonding Adhesive: Manufacturer's standard.

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

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

F. Metal Battens: Stainless-steel sheet, approximately 3¾ inch wide by 3/8 inch thick prepunched.

Batten anchors shall be 3/8 inch diameter, 3 3/4 inch long stainless-steel wedge-type anchors.

G. Fasteners: Factory-coated steel fasteners and metal plates complying with corrosion-resistance provisions in FM Global 4470, designed for fastening membrane to substrate, and acceptable to roofing system manufacturer.

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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.

2.5 BALLAST

A. CSPE roofing loosely laid on the tank topping slab shall be secured from wind forces by structural foam placed above the membrane followed by 12 inches of native topsoil as described in the drawings and specified in Section 31 23 23 – Fill.

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 minimum concrete drying period recommended by roofing system manufacturer has passed.

3. Verify that concrete substrate is visibly dry and free of moisture. Test for capillary moisture by plastic sheet method according to ASTM D 4263.

4. Verify that concrete-curing compounds that will impair adhesion of roofing components to roof deck have been removed.

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

3.2 PREPARATION

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

B. Prevent materials from spilling or migrating onto surfaces of other construction.

3.3 ROOFING INSTALLATION, GENERAL

A. Install roofing system according to roofing system manufacturer's written instructions.

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

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3.4 LOOSELY LAID AND BALLASTED MEMBRANE ROOFING INSTALLATION

A. Loosely lay roofing over area to receive roofing, and install according to roofing system manufacturer's written instructions.

B. Start installation of roofing in presence of roofing system manufacturer's technical personnel.

C. Accurately align roofing, without stretching, and maintain uniform side and end laps of minimum dimensions required by manufacturer. Stagger end laps.

D. Mechanically fasten perimeter of roofing according to requirements in SPRI RP-4.

E. Mechanically fasten or adhere roofing at corners, perimeters, and transitions according to requirements in SPRI RP-4.

F. Seams: Edges shall be seamed by a manufacturer’s representative, or manufacturer approved qualified personnel. Clean seam areas, overlap roofing, and weld side and end laps of roofing and sheet flashings according to manufacturer's written instructions to ensure a watertight seam installation. Complete welding of seams within 24 hours of exposing CSPE sheet or before curing of CSPE sheet has begun. Weld seams as follows:

1. Weld Method: Hot air or solvent, as standard with roofing system manufacturer.

2. Test lap edges with probe to verify seam weld continuity. Apply lap sealant to seal cut edges of roofing sheet.

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

4. Repair tears, voids, and lapped seams in roofing that do not comply with requirements.

G. Spread sealant bed at concrete access curbs and vents and securely seal roofing in place as described in the drawings.

H. Install geocomposite drain over roofing according to Section 33 46 00 – Subdrainage (Drainage Composites).

I. Ballast: Apply structural foam, geotextile filter fabric and 12 inches of topsoil. Prior to distributing topsoil, remove rock in excess of 3 inches in diameter. Distribute topsoil uniformly over structural foam and filter fabric; spread with care to minimize possibility of damage to underlying materials. Install structural foam and topsoil according to Section 31 23 23 "Fill.”

3.5 BASE FLASHING INSTALLATION

A. Install flashing at concrete access curbs and tank vents.

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

C. 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.

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

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E. Clean seam areas, overlap, and firmly roll sheet flashings into the adhesive. Weld side and end laps to ensure a watertight seam installation. Complete welding of seams within 24 hours of exposing CSPE sheet or before curing of CSPE sheet has begun.

F. Terminate and seal top of sheet flashings as described in the drawings.

3.6 FIELD QUALITY CONTROL

A. Testing Agency: Engage a factory representative to inspect substrate conditions, surface preparation, membrane application, flashings, protection, and drainage components, and to furnish reports to the Contracting Officer.

B. Final Roof Inspection: Arrange for roofing system manufacturer's representative to inspect roofing installation on completion.

C. Repair or remove and replace components of roofing system where inspections indicate that they do not comply with specified requirements.

D. Additional testing and inspecting, at Contractor's expense, will be performed to determine if replaced or additional work complies with specified requirements.

3.7 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 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 prior to application of the roof covering, or at the time of Substantial Completion and according to warranty requirements.

3.8 ROOFING INSTALLER'S WARRANTY

A. WHEREAS _______________________________ of ___________________________, herein called the "Roofing Installer," has performed roofing and associated work ("work") on the following project:

1. Owner: Grand Teton National Park DOI

2. Address: P.O. Box 170

3. Structure Name/Type: Taggart Tank – Moose Potable Water System

4. Location: Taggart Creek

5. Area of Work: West of Taggart Lake Trailhead

6. Acceptance Date: _________________.

7. Warranty Period: 2 years

8. Expiration Date: __________________.

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B. AND WHEREAS Roofing Installer has contracted (either directly with Government or indirectly as a subcontractor) to warrant said work against leaks and faulty or defective materials and workmanship for designated Warranty Period, C. NOW THEREFORE Roofing Installer hereby warrants, subject to terms and conditions herein set forth, that during Warranty Period he will, at his own cost and expense, make or cause to be made such repairs to or replacements of said work as are necessary to correct faulty and defective work and as are necessary to maintain said work in a watertight condition.

D. This Warranty is made subject to the following terms and conditions:

1. Specifically excluded from this Warranty are damages to work and other parts of the building, and to building contents, caused by:

a. lightning;

b. fire;

c. failure of roofing system substrate, including cracking, settlement, excessive deflection, deterioration, and decomposition;

d. faulty construction of parapet walls, copings, chimneys, skylights, vents, equipment supports, and other edge conditions and penetrations of the work;

e. vapor condensation on bottom of roofing; and

f. activity on roofing by others, including construction contractors, maintenance personnel, other persons, and animals, whether authorized or unauthorized by the Government.

2. When work has been damaged by any of foregoing causes, Warranty shall be null and void until such damage has been repaired by Roofing Installer and until cost and expense thereof have been paid by the Government or by another responsible party so designated.

3. Roofing Installer is responsible for damage to work covered by this Warranty but is not liable for consequential damages to building or building contents resulting from leaks or faults or defects of work.

4. During Warranty Period, if a Government Representative allows alteration of work by anyone other than Roofing Installer, including cutting, patching, and maintenance in connection with penetrations, attachment of other work, and positioning of anything on roof, this Warranty shall become null and void on date of said alterations, but only to the extent said alterations affect work covered by this Warranty. If the Government engages Roofing Installer to perform said alterations, Warranty shall not become null and void unless Roofing Installer, before starting said work, shall have notified the Government in writing, showing reasonable cause for claim, that said alterations would likely damage or deteriorate work, thereby reasonably justifying a limitation or termination of this Warranty.

5. During Warranty Period, if original use of roof is changed and it becomes used for, but was not originally specified for, a promenade, work deck, spray-cooled surface, flooded basin, or other use or service more severe than originally specified, this Warranty shall become null and void on date of said change, but only to the extent said change affects work covered by this Warranty.

6. A Government representative shall promptly notify Roofing Installer of observed, known, or suspected leaks, defects, or deterioration and shall afford reasonable opportunity for Roofing Installer to inspect work and to examine evidence of such leaks, defects, or deterioration.

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7. This Warranty is recognized to be the only warranty of Roofing Installer on said work and shall not operate to restrict or cut off the Government from other remedies and resources lawfully available to Government in cases of roofing failure. Specifically, this Warranty shall not operate to relieve Roofing Installer of responsibility for performance of original work according to requirements of the Contract Documents, regardless of whether Contract was a contract directly with the Government or a subcontract with Government’s General Contractor.

E. IN WITNESS THEREOF, this instrument has been duly executed this ___________ day of

1. Authorized Signature: _______________________________________.

2. Name: ______________________________________.

3. Title: _______________________________________.

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