SECTION THERMAL INSULATION

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2 PART 1 - GENERAL SECTION THERMAL INSULATION 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. Foam-plastic board insulation; Polyisocyanurate Board Insulation. B. Related Sections: 1. Section "Atactic-Polypropylene (APP) Modified Bituminous Membrane Roofing" for roofing construction. 1.3 ACTION SUBMITTALS A. Product Data: For each type of product indicated. 1.4 DELIVERY, STORAGE, AND HANDLING A. Protect insulation materials from physical damage and from deterioration due to moisture, soiling, and other sources. Store inside and in a dry location. Comply with manufacturer's written instructions for handling, storing, and protecting during installation. B. Protect foam-plastic board insulation as follows: 1. Do not expose to sunlight except to necessary extent for period of installation and concealment. 2. Protect against ignition at all times. Do not deliver foam-plastic board materials to Project site before installation time. 3. Quickly complete installation and concealment of foam-plastic board insulation in each area of construction. PART 2 - PRODUCTS 2.1 BOARD INSULATION A. Polyisocyanurate Board Insulation: ASTM C 1289, Type I, Class 2, with maximum flamespread and smoke-developed indexes of 75 and 450, respectively, per ASTM E 84. THERMAL INSULATION O:\32414\13-0 Design Documents & Lists\13-3 Specifications\ Thermal Insulation.doc

3 SECTION THERMAL INSULATION 1. Manufacturers: Subject to compliance with requirements, provide products by one of the following: a. Tremco Trisotech (basis of design). b. Atlas Roofing Corporation. c. Dyplast Products. d. GAF Materials Corporation. e. Hunter Panels. f. Insulfoam LLC; a Carlisle company. g. Johns Manville. B. Tapered Insulation: Provide factory-tapered insulation boards fabricated to slope of 1/8 per 12 inches. C. Provide preformed saddles, crickets, tapered edge strips, and other insulation shapes where indicated for sloping to drain. Fabricate to slopes indicated. A. Adhesive for Bonding Insulation: Two-component, solvent-free, low odor, elastomeric urethane adhesive formulated to adhere roof insulation to substrate. 1. Basis of design product: Tremco, Low Rise Foam Insulation Adhesive. 2. Flame Spread Index, ASTM E 84: Smoke Developed Index, ASTM E 84: Volatile Organic Compounds (VOC), maximum, ASTM D 3960: 0 g/l. 5. Tensile Strength, minimum, ASTM D 412: 250 psi. 6. Peel Adhesion, minimum, ASTM D 903: 17 lbf/in. 7. Flexibility, 70 deg. F, ASTM D 816: Pass. 2.2 BOARD INSULATION ACCESSORIES A. General: Roof insulation accessories recommended by insulation manufacturer for intended use and compatibility with roofing. B. Tapered Edge Strips: ASTM C 208, Type II, Grade 1, cellulosic-fiber insulation board. PART 3 - EXECUTION 3.1 PREPARATION A. Clean substrates of substances that are harmful to insulation or that interfere with insulation attachment. THERMAL INSULATION O:\32414\13-0 Design Documents & Lists\13-3 Specifications\ Thermal Insulation.doc

4 3.2 INSTALLATION, GENERAL SECTION THERMAL INSULATION A. Comply with insulation manufacturer's written instructions applicable to products and applications indicated. B. Install insulation that is undamaged, dry, and unsoiled and that has not been left exposed to ice, rain, or snow at any time. C. Extend insulation to envelop entire area to be insulated. Cut and fit tightly around obstructions and fill voids with insulation. Remove projections that interfere with placement. D. Provide sizes to fit applications indicated and selected from manufacturer's standard thicknesses, widths, and lengths. Apply single layer of insulation units to produce thickness indicated unless multiple layers are otherwise shown or required to make up total thickness. 3.3 INSTALLATION OF INSULATION BOARDS A. Tapered Insulation: Provide factory-tapered insulation boards fabricated to slope of 1/8 per 12 inches. B. Provide preformed saddles, crickets, tapered edge strips, and other insulation shapes where indicated for sloping to drain. Fabricate to slopes indicated. C. 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. 1. Cut and fit insulation within 1/4 inch of nailers, projections, and penetrations. D. Install insulation under area of roofing to achieve required thickness. No areas shall be lower than 1.5. Where overall insulation thickness is 2.7 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. E. Trim surface of insulation where necessary at roof drains so completed surface is flush and does not restrict flow of water. F. Install tapered edge strips at perimeter edges of roof that do not terminate at vertical surfaces. G. Adhered Insulation: Install each layer of insulation and adhere to substrate as follows: 1. Set each subsequent layer of insulation in a uniform coverage of insulation adhesive per manufacturer s recommendations, firmly pressing and maintaining insulation in place. 3.4 PROTECTION A. Protect installed insulation from damage due to harmful weather exposures, physical abuse, and other causes. Provide temporary coverings or enclosures where insulation is subject to abuse and cannot be concealed and protected by permanent construction immediately after installation. END OF SECTION THERMAL INSULATION O:\32414\13-0 Design Documents & Lists\13-3 Specifications\ Thermal Insulation.doc

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6 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. Removal of the existing roof and insulation system. 2. Atactic-polypropylene (APP) modified bituminous membrane roofing. 3. Vapor barrier. B. Related Requirements: 1. Section "Thermal Insulation" for insulation beneath the roofing membrane system. 2. Section "Roof Specialties" for metal roof flashings and counterflashings. 3. Section "Roof Accessories" for equipment supports and preformed flashing sleeves. 4. Section "Joint Sealants" for joint sealants, joint fillers, and joint preparation. 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 INFORMATIONAL SUBMITTALS A. Qualification Data: For Installer manufacturer and testing agency. B. Manufacturer Certificates: Signed by roofing manufacturer certifying that roofing system complies with requirements specified in "Performance Requirements" Article. 1. Submit evidence of compliance with performance requirements. C. Product Test Reports: For components of roofing system, for tests performed by manufacturer and witnessed by a qualified testing agency. D. Research/Evaluation Reports: For components of roofing system, from ICC-ES. E. Field quality-control reports. F. Sample Warranties: For manufacturer's special warranties. APP MODIFIED BITUMINOUS

7 1.5 ACTION SUBMITTALS A. Product Data: For each type of product indicated. B. Shop Drawings: For roofing system. Include plans, elevations, sections, details, and attachment to other work. 1. Base flashings and membrane terminations. 2. Crickets, saddles, and tapered edge strips, including slopes. 3. Insulation fastening patterns for corner, perimeter, and field-of-roof locations. C. Samples for Verification: For the following products: 1. Sheet roofing materials, including base sheet, roofing membrane sheet, flashing backer sheet, membrane cap sheet and flashing sheet, of color specified. 1.6 CLOSEOUT SUBMITTALS A. Maintenance Data: For roofing system to include in maintenance manuals. 1.7 QUALITY ASSURANCE A. Manufacturer Qualifications: A qualified manufacturer that is FM Global approved for membrane roofing system identical to that used for this Project. B. Contractor shall engage the roofing manufacturer s full time technical inspector to monitor installation of roof system. The inspector shall be on the jobsite for a full time every day roofing work is being conducted. A full time day is defined as from the time the crew arrives to the time the temporary tie-ins are completed. Technical Inspector shall have a minimum history of one year inspecting the specified roof system. C. Manufacturers technical inspector shall: 1. Be OSHA 10 Hour Safety Trained 2. Be an employee of the manufacturer. 3. Deliver daily reports to Owner and designated representative. 4. Organize weekly progress meetings. 5. Keep specifications and safety data sheets on site. D. Installer Qualifications: A qualified firm that is approved, authorized, or licensed by membrane roofing system manufacturer to install manufacturer s product and that is eligible to receive manufacturer s special warranty. Roofing workers must be trained in safe application techniques for torch applied roofing, such as that provided by CERTA (Certified Roof Torch Applicator) Program. APP MODIFIED BITUMINOUS

8 1.8 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. 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. C. Protect roof insulation materials from physical damage and from deterioration by sunlight, moisture, soiling, and other sources. Store in a dry location. Comply with insulation manufacturer's written instructions for handling, storing, and protecting during installation. D. Handle and store roofing materials, and place equipment in a manner to avoid permanent deflection of deck. 1.9 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 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, base flashings, roof insulation, cover boards, substrate board, roofing accessories, and other components of roofing system. 2. Warranty Period: 15 years from date of Substantial Completion. B. Special Project Warranty: Submit roofing Installer's warranty, on warranty form at end of this Section, signed by Installer, covering the Work of this Section, including all components of roofing system such as membrane roofing, base flashing, roof insulation, fasteners, cover boards, substrate boards, vapor barriers, and walkway products, for the following warranty period: 1. Warranty Period: Two years from date of Substantial Completion. PART 2 - PRODUCTS 2.1 MANUFACTURERS A. Manufacturers: All components of roof assembly, including insulation are to be supplied by a single manufacturer.: APP MODIFIED BITUMINOUS

9 1. Tremco Inc. POWERply APP Modified Bitumen Roof System (Basis of Design). 2. CertainTeed Corporation. 3. Firestone Building Products. 4. GAF Materials Corporation. 5. IKO. 6. Johns Manville. 7. Koppers Inc. B. Source Limitations: Obtain components including roof insulation fasteners for roofing system from same manufacturer as membrane roofing or manufacturer approved by membrane roofing manufacturer. C. Consideration for use of roofing products other than those of the Basis of Design shall be submitted as a substitution and follow the directions found in specifications Section , Substitution Procedures. 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. 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. FM Global Listing: Roofing, base flashings, and component materials shall comply with requirements in FM Global 4450 or FM Global 4470 as part of a roofing system, and shall be listed in FM Global' "RoofNav" for Class 1 or noncombustible construction, as applicable. Identify materials with FM Global markings. 1. Fire/Windstorm Classification: Class 1A-90. D. Exterior Fire-Test Exposure: ASTM E 108 or UL 790, Class A; for application and roof slopes indicated; testing by a qualified testing agency. Identify products with appropriate markings of applicable testing agency. E. Fire-Resistance Ratings: Comply with fire-resistance-rated assembly designs indicated. Identify products with appropriate markings of applicable testing agency. 2.3 ROOFING SHEET MATERIALS A. Base Sheet: ASTM D 6509, fiberglass reinforced, APP-modified asphalt sheet. 1. Basis of design product: Tremco, POWERply APP Base Sheet. APP MODIFIED BITUMINOUS

10 2. Tensile Strength at 0 deg. F, minimum, ASTM D 6509: machine direction, 100 lbf/in; cross machine direction, 100 lbf/in. 3. Tear Strength at 77 deg. F, minimum, ASTM D 6509: machine direction, 90 lbf; cross machine direction, 90 lbf. 4. Elongation at 0 deg. F, minimum, ASTM D 6509: machine direction, 3.5 percent; cross machine direction, 3.5 percent. 5. Low Temperature Flexibility, minimum, ASTM D 6509: 14 deg. F 6. Thickness, minimum, ASTM D 6509: inch. B. Roofing Membrane Cap Sheet: ASTM D 6222, Type I, Grade G, polyester reinforced, granule surfaced, APP-modified asphalt sheet. 1. Basis of design product: Tremco, POWERply APP FR. 2. Exterior Fire-Test Exposure, ASTM E 108: Class A. 3. Tensile Strength at 0 deg. F, minimum, ASTM D 6222: machine direction, 150 lbf/in (26 kn/m); cross machine direction, 100 lbf/in. 4. Tear Strength at 77 deg. F, minimum, ASTM D 6222: machine direction, 175 lbf; cross machine direction, 140 lbf. 5. Elongation at 0 deg. F, minimum, ASTM D 6222: machine direction, 35 percent; cross machine direction, 40 percent. 6. Low Temperature Flexibility, minimum, ASTM D 6222: 12 deg. F. 7. Thickness, minimum, ASTM D 6222: inch. 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. A. Asphalt Primer: Asphalt Primer, Water-Based: Water-based, polymer modified, asphalt primer. 1. Basis of design product: Tremco, TREMprime WB. 2. Asbestos Content, EPA 600/R13/116: None. 3. Volatile Organic Compounds (VOC), maximum, ASTM D 3960: 2 g/l. B. Roofing Mastic, Asphalt: ASTM D 4586, Type II, Class 1, one-part, cold-applied mastic specially formulated for compatibility and use with specified roofing membranes and flashings. 1. Basis of design product: Tremco, ELS. 2. Volatile Organic Compounds (VOC), maximum, ASTM D 6511: 234 g/l. 3. Resistance to Sag, maximum, ASTM D 4586: 1/8 inch. APP MODIFIED BITUMINOUS

11 4. Moisture Vapor Transmission, ASTM E 398: 0.25 g/100 sq. in. /24 hr at in. thickness, average. C. Cover Board: Impact-resistant, nonstructural, fiber-reinforced gypsum panels with moisture and mold resistance throughout the panel core and surface; manufactured to conform to ASTM C Basis of Design product: Tremco USG Securock Brand Gypsum-Fiber Roof Board 2. Size: Nominal 4 x 4 x ½ 3. Edges: Square 4. Facers: None 5. Flexural strength, parallel, lbs. min. per ASTM C473: ½" = Compressive strength, psi, nominal: ½" Flute spanability per ASTM E661: ½" = 8" 8. Permeance, perms per ASTM E96:½" = R Value per ASTM E96: ½" = Coefficient of thermal expansion, inches/inch.f, per ASTM E 831: 8.0 x Lin. variation with change in moisture, inches/inch.%rh, per ASTM D1037: 8.0 x Water absorption, % max, per ASTM C473: Surface water absorption nominal grams per ASTM C473: 1.6 grams 14. Mold resistance per ASTM D3273: Bending radius: ½" = 25' 16. Recycled Content: min. 97% recycled content certified Scientific Certification Systems. D. Cover Board adhesive: Two-component, solvent-free, low odor, elastomeric urethane adhesive formulated to adhere roof insulation to substrate. 1. Basis of design product: Tremco, Low Rise Foam Insulation Adhesive. 2. Flame Spread Index, ASTM E 84: Smoke Developed Index, ASTM E 84: Volatile Organic Compounds (VOC), maximum, ASTM D 3960: 0 g/l. 5. Tensile Strength, minimum, ASTM D 412: 250 psi. 6. Peel Adhesion, minimum, ASTM D 903: 17 lbf/in. 7. Flexibility, 70 deg. F, ASTM D 816: Pass. E. Mastic Sealant: Polyisobutylene, plain or modified bitumen; nonhardening, nonmigrating, nonskinning, and nondrying. F. Roofing Granules: Ceramic-coated roofing granules, No. 11 screen size with 100 percent passing No. 8 sieve and 98 percent of mass retained on No. 40 sieve, color to match roofing. APP MODIFIED BITUMINOUS

12 G. Miscellaneous Accessories: Provide those recommended by roofing system manufacturer. 2.5 VAPOR BARRIER A. Vapor BARRIER Sheet: ASTM D 6509, fiberglass reinforced, APP-modified asphalt sheet. 1. Basis of design product: Tremco, POWERply APP Base Sheet. 2. Tensile Strength at 0 deg. F, minimum, ASTM D 6509: machine direction, 100 lbf/in; cross machine direction, 100 lbf/in. 3. Tear Strength at 77 deg. F, minimum, ASTM D 6509: machine direction, 90 lbf; cross machine direction, 90 lbf. 4. Elongation at 0 deg. F, minimum, ASTM D 6509: machine direction, 3.5 percent; cross machine direction, 3.5 percent. 5. Low Temperature Flexibility, minimum, ASTM D 6509: 14 deg. F 6. Thickness, minimum, ASTM D 6509: inch. 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 wood cants, blocking, curbs, and nailers are securely anchored to roof deck at penetrations and terminations and that nailers match thicknesses of insulation. B. Proceed with installation only after unsatisfactory conditions have been corrected. 3.2 PREPARATION A. Roof Tear-Off General: Notify Owner each day of extent of roof tear-off proposed for that day. B. Remove existing roof membrane, insulation boards and flashings down to the structural deck. C. Clean substrate of dust, debris, moisture, and other substances detrimental to roofing installation according to roofing system manufacturer's written instructions. Remove sharp projections. D. Prevent materials from entering and clogging roof drains and conductors and from spilling or migrating onto surfaces of other construction. Remove roof-drain plugs when no work is taking place or when rain is forecast. E. Prime concrete deck with concrete deck primer per manufacturer s recommendations. APP MODIFIED BITUMINOUS

13 3.3 VAPOR-BARRIER INSTALLATION A. Vapor Retarder: Install one ply of base sheet to deck by torch application. B. Completely seal vapor retarder at terminations, obstructions, and penetrations to prevent air movement into roofing system. 3.4 ROOFING INSTALLATION, GENERAL A. Install roofing system according to roofing system manufacturer's written instructions and applicable recommendations in ARMA/NRCA's "Quality Control Guidelines for the Application of Polymer Modified Bitumen Roofing" and as follows: 1. Adhering Method: T (torched). 2. Number of APP-Modified Asphalt Sheets: One. 3. Surfacing Type: M (mineral-granule-surfaced cap sheet). B. Start installation of roofing in presence of manufacturer's technical personnel. C. Coordinate installation of roofing system so insulation and other components of the roofing system not permanently exposed are not subjected to precipitation or left uncovered at the end of the workday or when rain is forecast. 1. Provide tie-offs at end of day's work to cover exposed roofing sheets and insulation with a course of coated felt set in roofing cement or hot roofing asphalt, with joints and edges sealed. 2. Complete terminations and base flashings, and provide temporary seals to prevent water from entering completed sections of roofing system. 3. Remove and discard temporary seals before beginning work on adjoining roofing. 3.5 BASE-SHEET INSTALLATION A. Install modified bituminous roofing base sheet according to roofing manufacturer's written instructions, starting at low point of roofing system. Extend roofing sheets over and terminate beyond cants, installing as follows: 1. Torch apply to substrate. 2. Unroll roofing sheets and allow them to relax for minimum time period required by manufacturer. B. Laps: Accurately align roofing sheets, without stretching, and maintain uniform side and end laps. Stagger end laps. Completely bond and seal laps, leaving no voids. 1. Repair tears and voids in laps and lapped seams not completely sealed. C. Install roofing sheets so side and end laps shed water. APP MODIFIED BITUMINOUS

14 3.6 APP-MODIFIED BITUMINOUS MEMBRANE INSTALLATION A. Install modified bituminous roofing cap sheet according to roofing manufacturer's written instructions, starting at low point of roofing system. Extend roofing sheets over and terminate beyond cants, installing as follows: 1. Torch apply to substrate. 2. Unroll roofing sheets and allow them to relax for minimum time period required by manufacturer. B. Laps: Accurately align roofing sheets, without stretching, and maintain uniform side and end laps. Stagger end laps. Completely bond and seal laps, leaving no voids. 1. Repair tears and voids in laps and lapped seams not completely sealed. 2. Apply roofing granules to cover exuded bead at laps while bead is hot. C. Install roofing sheets so side and end laps shed water. 3.7 FLASHING AND STRIPPING INSTALLATION A. Flashings and Fastening: Provide base flashings, perimeter flashings, detail flashings and component materials and installation techniques that comply with requirements and recommendations of the following: 1. FMG 1-49: Loss Prevention Data Sheet for Perimeter Flashings. 2. NRCA Roofing and Weatherproofing Manual for construction details and recommendations. 3. SMACNA Architectural Sheet Metal Manual for construction details. 4. Metal perimeter flashings to meet ANSI/SPRI ES-1 uplift requirements. B. Install base flashing over cant strips and other sloping and vertical surfaces, at roof edges, and at penetrations through roof; secure to substrates according to roofing system manufacturer's written instructions and as follows: 1. Prime substrates with asphalt primer if required by roofing system manufacturer. 2. Flashing-Backer and Cap Sheet Application: Adhere flashing sheet to substrate in asphalt roofing cement at rate required by roofing system manufacturer. C. Extend base flashing up walls or parapets a minimum of 8 inches above roofing membrane or top of parapet and 4 inches onto field of roofing membrane. D. Mechanically fasten top of base flashing securely at terminations and perimeter of roofing. 1. Seal top termination of base flashing with a strip of glass-fiber fabric set in asphalt roofing cement. E. Roof Drains: Set 30-by-30-inch- metal flashing in bed of asphaltic adhesive on completed roofing membrane. Cover metal flashing with roofing cap-sheet stripping, and extend a minimum of 4 inches beyond edge of metal flashing onto field of roofing membrane. Clamp roofing membrane, metal flashing, and stripping into roof-drain clamping ring. APP MODIFIED BITUMINOUS

15 1. Install stripping according to roofing system manufacturer's written instructions. 3.8 FIELD QUALITY CONTROL A. Job Site Inspection: Contractors shall be required to acquire full-time inspection days utilizing manufacturer s technical inspectors. The minimum number of Technical Service full time inspection days will be 3 days. B. Final Roof Inspection: Arrange for roofing system manufacturer's technical personnel to inspect roofing installation on completion. 1. Notify Architect and Owner 48 hours in advance of date and time of inspection. C. Roofing system will be considered defective if it does not pass tests and inspections. 1. Additional testing and inspecting, at Contractor's expense, will be performed to determine if replaced or additional work complies with specified requirements. 3.9 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 at time of Substantial Completion and according to warranty requirements. C. Clean overspray and spillage from adjacent construction using cleaning agents and procedures recommended by manufacturer of affected construction ROOFING INSTALLER'S WARRANTY A. Roofing Installer has contracted (either directly with Owner or indirectly as a subcontractor) to warrant said work against leaks and faulty or defective materials and workmanship for designated Warranty Period. B. 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. C. 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; APP MODIFIED BITUMINOUS

16 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 Owner. 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 Owner 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 Owner 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 Owner engages Roofing Installer to perform said alterations, Warranty shall not become null and void unless Roofing Installer, before starting said work, shall have notified Owner 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. Owner 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. 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 Owner from other remedies and resources lawfully available to Owner 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 Owner or a subcontract with Owner's General Contractor. END OF APP MODIFIED BITUMINOUS

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