Bridgestone Retail Operations, LLC

Transcription

1 SECTION PART 1 - GENERAL 1.1 SUMMARY A. Section Includes: 1. TPO Membrane Roofing System including insulation. B. Related Requirements: 1. Section Closeout Procedures: Roofing warranty. 2. Section Rough Carpentry: Wood blocking and nailers. 3. Section Flashing and Sheet Metal: Sheet metal counter flashings, and other sheet metal. 4. Section Roof Specialties: Interface of gutters with roofing and metal flashings. 5. Section Joint Sealants. 1.2 REFERENCES A. The publications listed below form a part of this specification to the extent referenced. Publications are referenced within the text by the basic designation only. B. ASTM International (ASTM): 1. ASTM C Rigid, Cellular Polystyrene Thermal Insulation. 2. ASTM C Glass Mat Gypsum Substrate for Use as Sheathing. 3. ASTM C Faced Rigid Cellular Polyisocyanurate Thermal Insulation Board. 4. ASTM C Standard Test Method for Predicting Long-Term Thermal Resistance of Closed- Cell Foam Insulation. 5. ASTM D Thermoplastic Polyolefin Based Sheet Roofing. C. Underwriters Laboratories, Inc. (UL): 1. UL - Roofing Materials and Systems Directory. 2. UL Fire Test of Roof Deck Construction. 1.3 SUBMITTALS A. Comply with the requirements of Section Submit required submittals within 30 days after contract award. Submittals shall be available at all times to the Owner s Representative. B. Shop Drawings: Submit Shop Drawings showing: 1. Fastener patterns to meet uplift requirements. 2. Layouts for Crickets and saddles. 3. Details required for completion but not shown on Drawings. 4. Techniques for nighttime or weather tie offs. C. Closeout Submittals: Comply with the requirements of Section Roofing System Warranty. 1.4 DELIVERY, STORAGE, AND HANDLING A. Transport, handle, store, and protect products in compliance with the requirements of Section and manufacturer's recommendations. B. Deliver materials in manufacturer's original unopened containers, dry and undamaged with seals and Page 1 of 11

2 labels intact. C. Store materials in weather-protected environment, clear of ground and moisture. Storage requirements for insulation are as follows: 1. Cover with tarpaulin, shield from moistures and ultraviolet rays. 2. Elevate minimum of 4 inches above substrate. 3. Secure to resist high winds. 4. Distribute insulation stored on roof deck to prevent concentrated loads. 5. Do not install wet insulation. Insulation shall be thoroughly dry prior to installation. D. Store cements, primers, and caulks in heated area above 40 degrees F during cold weather and in area below 80 degrees F in warm weather. E. Do not store materials on completed roofing. 1.5 PROJECT CONDITIONS A. Follow industry standards for environment requirements including, but not limited to, the following: 1. Do not apply roofing membrane during inclement weather. When air temperature is expected to fall below 40 degrees F, follow specified Cold Weather Application Procedures as specified herein. 2. Do not apply finished roofing system to wet, damp or frozen deck surface or when precipitation is occurring. 3. Do not expose materials vulnerable to water or sun damage in quantities greater than can be weatherproofed during same day. 4. Maintain bonding adhesive at a min of 60 degrees prior to application. 1.6 WARRANTY A. Provide Warranty commencing at date of Grand Opening, that includes cost of labor and materials for loss of weather tightness without financial limit for a period of 20 years. PART 2 - PRODUCTS 2.1 MANUFACTURERS A. Manufacturers: Subject to compliance with requirements and to the extent specified hereinafter, provide products by the following manufacturers: 1. Firestone Building Products Company, Indianapolis, IN. 2. Substitutions not allowed. 2.2 SYSTEM DESCRIPTION A. Single Ply Membrane Roofing System: Single ply membrane roofing system consisting of insulation on metal deck with reinforced membrane mechanically fastened. B. Flashing and Waterproofing Membranes: Reinforced membrane and unreinforced, fully adhered, as defined herein and indicated on Drawings. 2.3 ROOFING SYSTEMS A. Single Ply Mechanically Attached TPO Membrane Roofing System. Subject to compliance with requirements, provide one of the following products: 1. UltraPly TPO Roofing System by Firestone Page 2 of 11

3 B. Substitutions: Comply with the requirements of Section ROOF MEMBRANE A. Roof Membrane: Single ply membrane composed of thermoplastic polyolefin (TPO) sheet as specified for the specific product hereinbefore and reinforced with polyester scrim conforming to ASTM D Membrane Type: Reinforced, 60 mil thickness, white, 10 ft. maximum sheet width. B. Flashing Membrane: Reinforced and non-reinforced TPO membrane and pressure-sensitive flashing by Roofing System manufacturer, thickness to match roofing membrane, specifically designed for use in flashing at perimeters and around projections through roofing system. 2.5 WATERPROOFING MEMBRANE A. TPO System: 1. Waterproofing Membrane: Membrane waterproofing composed of thermoplastic polyolefin (TPO) formed into uniform, flexible sheets by Roofing System manufacturer, thickness to match roof membrane. 2. Waterproofing Flashing: Reinforced and non-reinforced TPO membrane and pressure-sensitive flashing by Roofing System manufacturer, thickness to match membrane, specifically designed for use in flashing at perimeters and wall, and around projections through roofing system. 2.6 ROOF INSULATION A. Isocyanurate Foam Insulation: Polyisocyanurate board insulation, ASTM C 1289, Type II, felt or glassfiber mat facer on both major surfaces, with an LTTR (Long Term Thermal Resistance) value of 25.0 based on ASTM C Subject to compliance with requirements, provide one of the following products: a. ISO 95+ GL, by Firestone. 2. Thickness: 4.4 inches min., in two layers of 2.2 inch insulation. B. Roof Curb Insulation: Polyisocyanurate Foam; both faces covered with glass fiber felt; thickness to match wood nailer. 2.7 ROOF PENETRATION FLASHING AND SEALS A. Molded Pipe Flashing: Pre-molded flexible pipe flashing as recommended and supplied by the roofing manufacturer. B. Urethane Rubber Seal System: Manufacturer s standard elastomeric pourable sealer pockets including two-part pourable urethane sealer. 2.8 ACCESSORIES A. Provide accessories as shown on the drawings and manufacturer s system accessories for a complete and warranted Roofing System, including, but not limited to, the following: 1. Weathered Membrane Cleaner. 2. Lap Sealant. 3. Bonding Adhesive. 4. Membrane Fasteners. 5. Termination Bar. 6. Insulation Fasteners. 7. Walkway / Isolation Pads. 8. Preformed Accessories including pipe flashings. 9. Preformed Corner Patching. 10. Draw Bands Page 3 of 11

4 11. Foam Filler Insulation: Polyurethane Expanding Foam as specified in Section Pressure-sensitive Flashing. 13. Primer. 14. Insulation and Membrane Fasteners. 15. In-seam Plates. 16. Splice Tape. PART 3 - EXECUTION 3.1 EXAMINATION A. Verify deck is clean and smooth, free of depressions, waves, or projections, properly sloped to drains, valleys, and eaves. Verify flutes of steel deck are evenly spaced at intersections. Defects in the substrate surface shall be reported and documented. B. Verify roof openings, curbs, pipes, sleeves, ducts, or vents through roof are solidly set, nailing strips, and reglets are in place. Verify deck is supported and tightly secured. C. Verify deck surfaces are dry and free of water, snow, and ice. 3.2 PREPARATION A. Provide covers and other means of protection as necessary to protect building surfaces against damage during roofing work. B. Where Work shall continue over finished roof membrane, protect roof system from damage. 3.3 INSTALLATION A. Comply with membrane roofing system and insulation manufacturer's written instructions for installing roof insulation. 3.4 ROOF INSULATION INSTALLATION A. Mechanically fasten insulation, through fire resistive layer if specified, to deck with approved fasteners and plates. 1. Install insulation with long joints of insulation in a continuous straight line with end joints staggered between rows, abutting edges and ends between boards. Fill gaps exceeding 1/4 inch with insulation. 2. Lay insulation boards such that edges (sides or ends) of board running parallel to the direction of the metal deck flutes are fully supported on the top flange as close as practical to the center of the flange with a minimum bearing of 1 inch. Trim board edges if they veer off the flange center. 3. Install insulation under area of roofing to achieve required thickness. Where overall insulation thickness is 3 inches or greater, install two or more layers with joints of each succeeding layer staggered from joints of previous layer a minimum of 6 inches in each direction. 4. Mechanically Fastened Insulation: Install each layer of insulation and secure to deck using mechanical fasteners specifically designed and sized for fastening specified board-type roof insulation to deck type. 5. Install fasteners using drill with torque clutch; other types of drills will not be permitted. 6. In no case shall the number of fasteners be less than indicated in approved submittals. B. Lay insulation boards to moderate contact without forcing joints. Cut insulation to fit neatly around protrusions through roof. At parapet walls, cope insulation around protrusions and embed plates; butt tight to wall, sealing conditioned building. 1. Fill gaps over 1/4 inch wide with Foam Filler Insulation. After foam sets and before installation of membrane, trim foam flush with insulation surface Page 4 of 11

5 C. Tapered Insulation: Install tapered insulation in accordance with manufacturer s instructions and the following: 1. Mechanical Unit Crickets and Saddles: Install field-fabricated tapered isocyanurate foam insulation to achieve slope as shown on Drawings but not less than 1/4 inch per foot finished slope. 2. Roof Counterslope: Where tapered insulation is indicated to counter roof slope, install fieldfabricated tapered isocyanurate foam insulation to achieve 1/2 inch per foot min. finished slope. 3. Edge Taper Insulation: Adjacent to gutter assembly, slope field-fabricated tapered isocyanurate foam insulation at minimum rate of 1/2 inch per foot. Provide insulation having a starting thickness of one inch, tapering insulation up to match nominal roof insulation thickness. D. Apply no more insulation than can be sealed with membrane in same day. E. Adhere a single layer of insulation to manufactured metal curbs with bonding cement. 3.5 ROOF MEMBRANE INSTALLATION A. Mechanically Fastened Membrane: 1. Run membrane perpendicular to steel deck flutes. Unroll membrane over prepared substrate, lapping adjoining sheets as recommended by manufacturer. 2. Mechanically fasten membrane using manufacturer's fastening system. Install fasteners in accordance with submitted engineered layout pattern to resist specified wind uplift. 3. Install fasteners using drill depth sensing or torque limiting screw guns to limit under / over drive of fasteners. Drill motors and other non-limiting drivers shall not be used. 4. Seam Sealing: Heat-weld seams according to the system manufacturer s recommendations, and with a minimum weld width of 1-1/2 inches. B. Cold Weather Application Procedures: When air temperature is expected to fall below 40 degrees F, follow Cold Weather Application Procedures as follows: 1. Store materials in heated storage units prior to installation. Rotate adhesive, cement, and sealant containers to maintain their temperature above 40 degrees F. 2. Allow membrane to relax until no wrinkles are visible. 3. Allow adequate time for solvents in cements to flash off. Check dryness of applied cements before sealing joints. 4. Verify that frost, dew, and other forms of moisture have evaporated prior to covering insulation with membrane to prevent entrapment of moisture within finished roof system. 3.6 WATER CUTOFFS AND WEATHER PROTECTION A. Install water cut-offs at end of day's operation to seal insulation and edge of roof membrane from moisture entry. If inclement weather appears imminent during roofing application, cease operations and protect deck, insulation, flashings, penetrations and membrane from moisture infiltration with water cutoffs. Insulation and roofing materials not so protected prior to inclement weather will be considered damaged and will be cause for rejection. B. Remove water cut-offs and other temporary weather protections prior to continuing roofing work. Remove materials that have been subject to moisture damage and return deck to a clean, dry condition before proceeding with roofing operations. Remove damaged materials from job site. C. The water cut-offs and weather protection shall not be considered a part of the final roof system specified. 3.7 FLASHING MEMBRANE AND ACCESSORIES INSTALLATION A. Flashing Membrane: 1. Apply flexible flashings to seal membrane to vertical elements using manufacturer's standard peel Page 5 of 11

6 and stick flashing. 2. Heat weld flashing in the field of the roof, along gutters, and in scuppers. 3. Reinforced Flashing Membrane: Where conditions permit, flash penetrations and walls with reinforced flashing membrane. 4. Uncured Flashing: Limit use of uncured flashing to overlay vertical seams as required at angle changes, to flash inside and outside corners, scuppers, and other penetrations or unusually shaped walls as approved by the manufacturer. B. Roof Penetrations: 1. Molded Pipe Flashing: Install where shown and elsewhere whenever configuration of penetration will permit except when urethane rubber seals is shown. 2. Urethane Rubber Seal System: Install at locations shown including electrical, gas line, condensate pipe, and flue penetrations. Install also where molded pipe flashing cannot be installed due to configuration of penetration. 3. Install flashings and seals per manufacturer s application instructions. 4. Comply with manufacturers recommendations for flashing for pipe penetrations larger than 6 inches. C. Seal flashings and flanges of items penetrating membrane. D. Fasten termination bars at 12 inches on center or less to maintain constant compression. E. Isolation Pads: Install isolation pads at pipe supports. F. Walkway Pads: Install walkway pads as shown on Drawings. Maximum pad section length shall be 10 ft with three inch spacing between pad sections, unless indicated otherwise on Drawings. Adhere pads to roofing system to prevent displacement in maximum anticipated design wind velocity and to allow drainage of moisture from beneath pads. Install pads to allow roof surface drainage without ponding water. Install pads after adjacent equipment installation. 3.8 WATERPROOFING MEMBRANE INSTALLATION A. Waterproofing Membrane: Install waterproofing membrane to be fully adhered to parapet using bonding adhesive as recommended by membrane manufacturer. Run membrane waterproofing over top of parapet and turn down front side of parapet 3 inches. 1. Provide continuous weather tight seal from 3 inches below parapet cap, over parapet, down interior face, and onto roof surface. 2. Conceal adhesive on exterior face of parapet with waterproofing. 3.9 WATERPROOFING FLASHING INSTALLATION A. Waterproofing Flashing: Apply waterproofing flashing to seal membrane to vertical elements using manufacturer's peel and stick flashing. B. Comply with the following requirements when using TPO waterproofing flashing: 1. Reinforced Waterproofing Flashing: Where conditions permit, flash walls with reinforced waterproofing flashing or as required by the manufacturer. 2. Uncured Flashing: Limit use of uncured flashing to overlay vertical seams as required at angle changes, to flash inside and outside corners, scuppers, and other penetrations or unusually shaped walls where use of reinforced waterproofing flashing is not practical or as required by the manufacturer INTERFACE WITH OTHER WORK A. Coordinate Work with installation of associated roof edge fascia system specified under other sections as the Work of this Section proceeds Page 6 of 11

7 B. Complete installation of base flashing at roof curbs prior to setting roof top equipment CLEANING A. Replace defaced or disfigured finishes caused by Work of this Section. B. One week prior to Grand Opening, sweep entire roof surface with a magnetic sweeper to remove nails, screws and other metal items which may cause subsequent damage to the roof PROTECTION A. Where construction traffic must continue over finished roof installation, protect roof surfaces as recommended by roofing system manufacturer to protect manufacturer's warranty MAINTENANCE AND REPAIR DURING CONSTRUCTION A. Maintain roofing system and related work from time of roofing completion until store Grand Opening. Repair material or installation defects or damage resulting from any subsequent work on the roof or from any weather-related damage. Maintain roof system in watertight condition including repair of conditions that show signs of inferior workmanship that may result in potential leaks. Repair leaks occurring prior to Grand Opening in accordance with good roofing practice and the requirements specified herein. Remove and replace wet insulation caused by water leaks and repair the roofing system. END OF SECTION Page 7 of 11

8 ROOFING SYSTEM WARRANTY Owner: Address of Owner: Type and Name of Building: Location: Roofing System Specification Number: Area of Roof System: Date of Store Grand Opening: Date Warranty Expires: Manufacturer s 24 hour Emergency Telephone: ( ) (no answering machines or message Center) Contact Name: Contractor s Telephone: ( ) (no answering machines or message center) Contact Name: Upon completion of and after inspection by the Manufacturer of such Work, Manufacturer agrees to warrantee the aforesaid Roofing System for a limited period and subject to the conditions herein set forth: Manufacturer Warrantees, subject to the conditions herein set forth, that during a period of 20 years from the date of store Opening, it will, at its own cost and expense, make or cause to be made such repairs to said Roofing System resulting solely from faults or defects in materials and/or workmanship applied by or through the Roofing System Contractor as may be necessary to maintain said Roofing system in watertight condition. Owner s remedies and manufacturer s liability shall include cost of labor and materials for loss of weather tightness without financial limit. In accordance with good roofing practice, the Manufacturer shall remove and replace all wet insulation (as defined in specifications) caused by water leaks covered under this Warranty (i.e. leaks resulting from circumstances other than those listed in the exclusions) and repair the Roofing System at no cost to the Owner. Should the investigation reveal that the leak is the result of something other than a defect in materials and/or workmanship applied by or through the Roofing System Contractor, the reasonable investigative work and reasonable repair costs shall be paid by the Owner. Failure by the Owner to pay these costs shall render this warranty null and void. Warranty shall include materials and workmanship from the following items: 1. Membranes (including parapet waterproofing). 2. Membrane flashings including attachment to sheet metal flashings and trim. 3. Fasteners, cements, and adhesives. This warranty is made subject to the following conditions: 1. The Owner shall notify Manufacturer within 24 hours of notice by the Owner s Roof Maintenance Department of leaks. The Manufacturer will respond with service within 24 hours of notice from owner (if not possible, than no later than 48 hours, however Owner retains the right to make repairs at Warrantor s expense to mitigate damages). 2. Specifically excluded from this Warranty is any and all damage to said roof system, the building, or contents caused by natural disasters, including, but not limited to: earthquake, hail, lightning, hurricane, tornado, strong gale wind force (72 MPH or greater), or structural failure of the building or of the roof deck (as defined by a licensed Structural Engineer and except that caused by the Manufacturer), fire, and acts of war. If the roof system is damaged by reason of any of the foregoing, this warranty shall become null and void (AFFECTED AREAS ONLY) for the balance of the warranty period unless such damage is repaired at the expense of the owner Page 8 of 11

9 3. Manufacturer is not liable for consequential damages to the building or contents resulting from any defects in said roof system, including, but without limitation, any interruption of business experienced by Owner or occupants of the building. 4. All additions and/or alterations to the roof system shall be installed in accordance with the manufacturer s written recommendations and the manufacturer should provide prior to acceptance to said additions or alterations. Should unauthorized additions/alterations be discovered by the Owner s Roof Maintenance Department, the manufacturer will be notified in writing within fourteen days of such discovery. Provide at manufacturer s discretion an inspection of the unauthorized additions/alterations and notify the Owner in writing of any remedy required by the manufacturer within fourteen days. This Installation/Inspection by the Manufacturer is to be done at a cost to Owner of not more than $ to cover travel and time for the inspector. Provide inspection of said roof during business hours. Failure to notify the Owner of any required remedy shall deem the addition/alteration acceptable to the Manufacturer and the warranty will remain in effect. 4. All additions and/or alterations to the roof system shall be installed in accordance with the manufacturer s written recommendations and the manufacturer should provide prior to acceptance to said additions or alterations. Should unauthorized additions/alterations be discovered by the Owner s Roof Maintenance Department, the manufacturer will be notified in writing within fourteen days of such discovery. Provide at manufacturer s discretion an inspection of the unauthorized additions/alterations and notify the Owner in writing of any remedy required by the manufacturer within fourteen days. This Installation/Inspection by the Manufacturer is to be done at a cost to Owner of not more than $ to cover travel and time for the inspector. Provide inspection of said roof during business hours. Failure to notify the Owner of any required remedy shall deem the addition/alteration acceptable to the Manufacturer and the warranty will remain in effect. 5. The area of additions and/or alterations shall be the only area of the roof system where warranty is suspended. All other roof system areas will have continual coverage under the roof warranty. 6. This Warranty is transferable within the 20-year warranty period, subject to Manufacturer s inspection, written approval and transfer fee payment. 7. During the term of this warranty, the manufacturer, its agents and employees, shall have free and unlimited access to the roof during the hours of store operation. 8. The terms and conditions of this warranty are controlling. Any other warranty conditions attached or referenced that are in conflict with this warranty are ineffective and invalid. 9. This limited warranty shall be governed and construed in accordance with the laws of the State of Arkansas without regard to conflict of laws. 10. The Manufacturer does not warrant products incorporated or utilized in this installation that it has not furnished. The Manufacturer specifically disclaims liability under any theory of law arising out of the installation or performance of, or damages sustained by or caused by, products not furnished by the Manufacturer. IN WITNESS WHEREOF, this instrument has been duly executed this day of,. END OF WARRANTY By Page 9 of 11

10 CONTRACTOR'S RECORD LETTER OF CONFORMANCE SECTION ELASTOMERIC MEMBRANE ROOFING Project Location: Date: (City) (State) Project Number: Store Number: Regulatory Requirements for Roof Assembly: The roof assembly meets the following FM & UL requirements: Roof assembly meets Class 1A-90 requirements for fire resistance and wind uplift in accordance with FM Approvals Standard 4470 and FM Global Loss Prevention Data Sheet 1-28 and FM Global Loss Prevention Data Sheet 1-29 (Insert UL Classification) Roof assembly meets Fire Classification UL 1256 for Flame Spread developed from underside of deck and meets approval standard of FM Standard 4450 for Class 1 Insulated Steel Deck. The following product has been selected for use in this project from the list of acceptable products specified. Quality Assurance: Roofing Applicator: In accordance with this specification, the applicator is qualified to install the indicated Roofing System. Firestone Building Products Approved Roofing Contractor Roofing System Manufacturer: Indicate System provided below: UltraPly Roofing System, by Firestone Roofing System Accessories: The following accessories are compatible with the indicated Roofing System Warranty. Sheet Seaming System: Cleaner: Primer: Lap Sealant: Bonding Adhesive: Mechanical Fasteners for Membrane: Manufacturer: Termination Bar: Manufacturer: Mechanical Fasteners for Insulation: Coated mechanical fasteners; proper length and acceptable for defined wind uplift. Manufacturer: Walkway/Isolation Pads: Manufacturer: Urethane Rubber Seal System: Manufacturer: Molded Pipe Flashing: Page 10 of 11

11 Manufacturer: Draw Band: Stainless steel. Roof Insulation: Check insulation system and those products to be provided; give thicknesses. Insulation Boards: Indicate boards used in insulation assembly: Isocyanurate Foam Insulation: ISO 95+ GL, by Firestone Thickness: Other: Thickness: Roof Curb Insulation: Polyisocyanurate Foam: Thickness: Statement of Conformance: This Record Letter of Conformance is provided as a Record Document in accordance with Section Closeout Procedures. The undersigned hereby declares that the Product identified above by manufacturer's name and model number is (one of) the product(s) specified and is suitable for the intended use as defined within the Contract Documents and has been provided and placed in operational condition in accordance with the manufacturer's published instructions and the Contract Documents. SUPPLIER: Phone Number: ( ) (Contact name of supplier offering above product) (Supplier name and address) SUBCONTRACTOR: Phone Number: ( (Contact name of subcontractor offering above product) ) (Subcontractor name and address) CONTRACTOR: (Contact name of Contractor) (Contractor Signature and Title of Signatory) Page 11 of 11