Shingle specifications should be similar to TAMKO Heritage.

Transcription

1 STEEP SLOPE ROOFING Asphalt Shingles MEMBRANE ROOFING Built-Up Bituminous Roofing Thermoplastic Membrane Roofing STEEP SLOPE ROOFING Asphalt Shingles Part 1 General Systems described in this section are intended to be installed in situations where the roof slope is at least 4 inches per foot, and where the roofs are not intended to receive regular foot traffic for equipment maintenance. A complete roofing system, making the materials manufacturer responsible for the roofing and flashing system, shall be used. The materials manufacturer is required to make periodic inspections of the work in progress to ensure that the completed work will qualify for the required warranties. Roof deck insulation shall not be used as the only element in the overall building thermal resistance system. Refer to Section Shingle specifications should be similar to TAMKO Heritage. Shingle roof repairs and modifications which are part of a renovation project (e.g. installation of a new exhaust fan) should follow these standards as much as possible. Existing roof warranties must not be compromised. The DP must prepare a complete specification and details for the required repair work. Generic "flashing as required" notes (which often appear on engineering details for new exhaust fans) are not acceptable. Materials manufacturer(s) and installation contractor(s) must demonstrate 5 years of successful installations of exact systems or 5 jobs in Northern Arizona or comparable elevation and weather conditions (climate zone 5 over 5,000 feet elevation). Underlayment for shingles will be 1 layer of wrinkle free underlayment, SBS modified asphalt, fiberglass reinforced, complying with ASTM D226, ASTM D146, ASTM D A, ASTM D , ASTM D , ASTM E96, ASTM E108 (for example, Liberty MA Base). Project McDonald Hall Roof Replacement 1 OF 18

2 Metal trim and Flashing: All perimeter eaves must incorporate a minimum of 2 x4, 24 gauge sheet metal flashing. This also includes all rakes. Metal Drip Edge: Brake-formed sheet metal with a four (4") inch roof deck flange and a four (4") inch fascia flange with a hemmed drip at lower edge. Furnish the material in lengths of 8 or 10 feet (2.5 to 3 m). Make certain face of metal fits firmly over edge, with proper three (3") inch lap at ends. Metal Flashing: Job-cut to sizes and configuration required, dimensions given are for reference purposes, modify as needed. Vent Pipe Flashing: Lead conforming to ASTM B 749, Type L51121, at least 4 lbs. lead, unless otherwise indicated. Provide lead sleeve sized extending at least four (4") inches (100 mm) from pipe onto roof. Completely solder all connections according to SMACNA standards. All Metal Trim and Flashing shall be made of Galvanized-steel sheets. SBS modified rubberized self-adhered ice shield shall be provided and installed at all eave perimeters and valleys and shall extend 6 feet up from eave edge and 3 feet up the wall. Accessories: Asphalt Plastic Cement: Non-asbestos fibrated asphalt cement, complying with ASTM D Nails: Are hot-dip galvanized steel, inch (3 mm) diameter barbed shank, sharppointed, conventional roofing nails with a minimum d inch (9.5 mm) diameter head and of sufficient length to penetrate ¾ inch (19 mm) into solid decking or at least c inch (3 mm) through plywood sheathing. Where nails are in contact with flashing, prevent corrosion action by providing nails made from the same metal as that of the flashing. Face Nails/Fasteners for clad metal at tie into shingles will be of proper length to penetrate thru decking. Install fastener with grommet to help seal exposed fastener. 3/4" plywood nailers at all parapet walls. Project McDonald Hall Roof Replacement 2 OF 18

3 Warranties as follows: Manufacturer's standard form, without monetary limitation, in which manufacturer agrees to repair or replace components of shingled roofing system that fails. 2year warranty from the installation contractor covering defects in installation 20-year warranty from the materials manufacturer including defects in materials and installation, and guaranteeing to maintain the system in a waterproof condition for the life of the warranty on a 40-year shingle. Full replacement value without proration Include all components of the roof assembly, from the deck up Include sealing of all perimeters, joints, and penetrations Part 2 Products A minimum of 235# Architectural-type heavy duty fiberglass shingles are the preferred roofing material. The DP shall specify a material with a minimum 20-year warranty. The use of asbestos-containing materials is expressly prohibited. All primary and secondary materials must be supplied by a single manufacturer, or approved by the primary materials manufacturer, to ensure single-point responsibility for the installation and warranty. Specify a manufacturer's standard shingle roofing system as follows (in accordance with current building codes as adopted by Owner see Division 1 for applicable code): UL Class A fire rating UL Class 110 wind uplift rating ASTM D Class H, Wind Resistance ASTM D 3161 Class F, Test at 110 MPH ASTM E108 Class A, Fire Resistance Underlayment, shingle, starter shingle Minimum 30-mil underlayment Peel and stick self adhered 15-mil ice shield For example, a manufacturer that meets this specification is TAMKO Heritage. Limit roof insulation to 2" thick. Insulations shall be specified which provide adequate load-bearing capacity at the 2" thickness. Quality Assurance: Installer Certificates: Signed by roofing system manufacturer certifying that installer is approved, authorized, or licensed by manufacturer to install roofing Project McDonald Hall Roof Replacement 3 OF 18

4 system. The installer s certification for approved material must be in the state of Arizona. Installer Qualifications: A qualified firm with 5-years (minimum) documented experience installing similar shingles. Installer must be approved, authorized, or licensed by roofing system manufacturer to install manufacturer's product and that is eligible to receive manufacturer's warranty for the approved materials. Manufacturer Certificates: Signed by roofing manufacturer certifying that roofing system complies with requirements specified in Section , Part 2 Products, and roof system, as indicated in the construction documents, meets requirements for roof system warranty specified in Section , Part 1 General. Part 3 Execution A pre-installation conference is required after the substrates are complete, and including the Contractor, Design Professional, Owner, materials manufacturer, and installing subcontractor(s). Shingle roofing is a finish material, not a staging platform for further construction work. Include the following provisions: A "temporary roof" is required if the Contractor is to "dry-in" the building to allow interior construction to begin or to provide a platform for further exterior construction If Contractor wants to dry-in, Contractor must do so only with a temporary roof Reference the National Roofing Contractor's Association (NRCA) requirements for temporary roofs, including "sacrificial" insulation on metal decks Phased roofing is prohibited Finished roofs are required to be protected with plywood sheets for any and all construction traffic, and all equipment moving be accomplished with rollers. Any damage to a finished roof prior to project Substantial Completion is Contractor s responsibility. Any damage caused to finished roof after Substantial Completion and prior to Final Completion will be assessed to determine responsibility. A copy of the roofing system manufacturer's inspection report of completed roofing installation is required to be provided to Owner. The roof is to be installed in accordance with the manufacturer's recommendations. Comply with manufacturer's instructions and recommendations but not less than those recommended by The NRCA Steep Roofing Manual". Project McDonald Hall Roof Replacement 4 OF 18

5 Installation contractor shall be certified by manufacturer to enforce warranty in Arizona. Refer to and describe the appropriate Sheet Metal and Air Conditioning Contractors National Association (SMACNA) details for each edge and penetration condition. The following are prohibited: Pitch pans Guy wires fastened directly to the deck Examine substrate for compliance with requirements for substrates, installation tolerances, and other conditions affecting performance of asphalt shingles. Do not proceed with installation until unsatisfactory conditions have been corrected. Commencement of roof application over any section will denote acceptability by Contractor of any section's readiness to receive asphalt shingles and he will be responsible for any corrective work which may be occasioned by his having started over an unsatisfactory surface. Clean substrate of projections and substances detrimental to application. Cover knotholes or other minor voids in substrate with sheet metal flashing secured with non corrosive roofing nails. Coordinate installation with flashings and other adjoining work to ensure proper sequencing. Do not install roofing materials until all vent stacks and other penetrations through roof sheathing have been installed and are securely fastened against movement. For re-roofing projects: Contractor shall remove all existing roofing, flashings, nails, etc. down to the existing roof deck. All tear-off materials shall be removed from the roof on a daily basis and disposed of in accordance with applicable codes and ordinances. Contractor shall not remove more in one day than can be covered the same day and made completely watertight. Fasten asphalt shingles to roof sheathing by hand using nails (6 nails per shingle). Use of pneumatic/electric nail guns and/or staples is not acceptable. Felt Underlayment: Apply underlayment horizontally over entire surface to receive asphalt shingles, lapping succeeding courses a minimum of two (2") inches (50 mm), end laps a minimum of four (4") inches (100 mm), and hips and valleys a minimum of six (6") inches (150 mm). Fasten felt with sufficient number of roofing nails to hold underlayment in place until asphalt shingle installation. Do not leave underlayment Project McDonald Hall Roof Replacement 5 OF 18

6 exposed to the elements for more than thirty (30) days. Flashing: Install metal flashing and trim as indicated and according to details and recommendations of the "Asphalt Roofing" section of the "The NRCA Steep Roofing Manual". Require the roofing installer to receive, accept, and install, all sheet metal flashings. Install asphalt shingles, beginning at roof's lower edge, with a starter shingle or strip of roll roofing. Fasten asphalt shingles in the desired weather exposure pattern; use number of fasteners per shingle (minimum of 6) as recommended by manufacturer. Use vertical and horizontal chalk lines to ensure straight coursing. Cut and fit asphalt shingles at valleys, ridges, and edges to provide maximum weather protection. Use fasteners at ridges of sufficient length to penetrate sheathing as specified. Pattern: a shingle spacing offset at succeeding courses. Repair or replace loading ground area when / if damaged back to original condition at minimum. All roofing projects shall add the required permanent roof tie-off/anchor points installations to meet current OSHA standards for fall protection. **END OF SECTION Project McDonald Hall Roof Replacement 6 OF 18

7 MEMBRANE ROOFING Part 1 General This section applies specifically to membrane roofs, but also pertains to other methods of roofing or those areas effectively acting as roofs (decks, overhangs, balconies, etc.). To aid in attaining both the written specification and warranties called for by Owner, the DP should design and detail appropriate roof slopes, drainage system(s), cants, flashing, protection devices or materials and utilize good common sense. Roofing techniques, systems and materials should be utilized that are time proven (+5 years) and be designed as composite systems instead of appliqués. Roofing shall be done only by an installation contractor who is approved by the manufacturer whose materials are used. A single installation contractor shall perform the work, and have not less than 5 years of successful experience in the installation of specified roofing systems. This criteria shall be verified prior to notice to proceed (NTP). Contractor must be licensed and certified by manufacturer in the State of Arizona. Owner requires a 20 year No Dollar Limit warranty on all membrane roofing systems along with a 1 ½ inch hail rider warranty. Owner requires all membrane roofing systems to resist the uplift forces produced by wind speeds up to 100 miles per hour. Coordinate the design of tested roofing assemblies with the supporting roof structural system. Roofing systems should be designed and/or specified that will allow occasional foot traffic by maintenance personnel. In areas where there is more frequent foot traffic, additional walk pads or elevated pads should be designed and demarcated, as approved by the material manufacturer. TRAFBLOC is an example of this material. All roofing projects shall add the required permanent roof tie-off/anchor points installations to meet current OSHA standards for fall protection. Part 2 Products Refer to sections below for products requirements & recommendations Part 3 Execution Refer to sections below for Execution requirements & recommendations Thermoplastic Membrane Roofing Part 1 General Project McDonald Hall Roof Replacement 7 OF 18

8 This Section includes the following: Fully adhered membrane roofing system. PROJECT CONDITIONS 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. Owner reserves the right to stop work at any time due to weather. Any substrate to receive new insulation, membrane or flashing shall be thoroughly dry. Should surface moisture occur the Contractor shall provide adequate equipment to dry the substrate. Prior to and during application, the Contractor shall ensure that all debris, dirt and dust shall be removed from surfaces where the new roofing is being installed. Precautions shall be taken to prevent wind blow-off or wind damage during the course of the roofing application. This may necessitate additional securing of temporary construction. Materials stored on the roof shall be secured at all times so that no flying debris may damage the installed roof system or surrounding areas. PERFORMANCE REQUIREMENTS Provide installed roofing membrane and base flashings that remain watertight; do not permit the passage of water; and resist specified uplift pressures, thermally induced movement, and exposure to weather without failure. Material Compatibility: Provide roofing materials that are compatible with one another under conditions of service and application required, as demonstrated by roofing membrane manufacturer based on testing and field experience. The materials shall meet ASTM 6754 or better. Roofing System Design: Provide a membrane roofing system that is identical to systems that have been successfully tested by a qualified testing and inspecting agency to resist the calculated uplift pressure produced by winds speeds of up to 100 miles per hour. Membrane roofing system shall not be compiled of any asphalt materials. Fire-Test-Response Characteristics: Provide membrane roofing materials with the firetest-response characteristics indicated as determined by testing identical products per test method below by UL or another testing and inspecting agency acceptable to authorities having jurisdiction. Materials shall be identified with appropriate markings of applicable testing and inspecting agency. Exterior Fire-Test Exposure: Class A; ASTM E 108, for application and roof slopes indicated. Project McDonald Hall Roof Replacement 8 OF 18

9 Provide UL Class A fire rating. SUBMITTALS Provide a list of 5 locations that the product has been installed at similar altitudes (over 5,000 feet) for the last 10 years or longer. All products shall meet ASTM 6754 or better. Product Data: For each type of product indicated provide samples of all materials to be used that are part of the roofing system. Shop Drawings: including: include plans, sections, details, and attachments to other Work, Roof size Structural calculations identifying the wind uplift forces to be resisted by membrane roofing system and supporting structural system Location and type of penetrations Perimeter and penetration details Base flashings and membrane terminations. Underlayment board installation Layout details Framing plan and framing fastening patterns. Roof drain assemblies All details provided shall have been accepted by an authorized manufacturer s representative. Warranties: submit two copies of manufacturer s total system warranty, including special warranties specified in this Section. Material Safety Data Sheets for all products submitted to Owner prior to starting work. Contractor s quality control program for installation of entire single-ply roofing membrane system submitted to Owner prior to starting work. Maintenance Data: For roofing system to include in maintenance manuals to uphold warranty. Inspection Report: Copy of roofing system manufacturer's inspection report of completed roofing installation. Project McDonald Hall Roof Replacement 9 OF 18

10 QUALITY ASSURANCE Contractor s roofing applicator (installation contractor) shall be certified in writing by the manufacturer of the specified product as a licensed approved applicator in the State of Arizona. Companies with manufacturer approval outside of the State of Arizona are not deemed in compliance with the NAU Technical Standards. All mentioned information below shall be supplied at preconstruction meeting prior to contract execution: Installer Certificates: Signed by roofing system manufacturer certifying that Installer is approved, authorized, or licensed by manufacturer to install roofing system. Installer Qualifications: A qualified firm with 5-years (minimum) documented experience installing the specified product. Installer must be approved, authorized, or licensed by roofing system manufacturer to install manufacturer's product and that is eligible to receive manufacturer's warranty for the approved materials. Submit the following qualification data: Project Foreman or Superintendent shall have supervised a minimum of five (5) projects of similar size and scope as this Project with the specified product. Contractor shall provide Name and address of these five (5) projects of similar size and scope as this Project. Include contact name and phone number for reference. Manufacturer Certificates: Signed by roofing manufacturer certifying that roofing system complies with requirements specified in Section "Performance Specification" Article and roof system, as indicated in the construction documents, meets requirements for roof system warranty specified in "Warranty" Article. Manufacturer Qualifications: The roofing membrane and system shall be identical to that used for this Project and which can show evidence of these materials being satisfactorily used on at least five (5) projects of similar size, scope and type within the last 5 years. Obtain components for membrane roofing system from or approved by roofing membrane manufacturer. Pre-installation Conference Conduct conference at Project site. Review methods and procedures related to roofing system including, but not limited to, the following: Meet with Owner, Owner s representative, testing and inspecting agency representative, Contractor, roofing installation contractor, roofing system manufacturer's technical representative and all subcontractors directly related to the installation of the new roof system. Project McDonald Hall Roof Replacement 10 OF 18

11 Review methods and procedures related to roofing installation, including manufacturer's written instructions. Note: Contractor shall have written manufacturer specifications, roof drawings, roof drawing notes, scope of work and specifications on site at all times during the construction period. Items of discussion shall include warranty and submittal requirements. Review and finalize construction schedule and verify availability of materials, Installer's personnel, equipment, and facilities needed to make progress and avoid delays. Review building protection, staging areas, site logistic plan, fall protection, installation procedures and requirements. Review structural loading limitations of roof deck during and after roofing. Review base flashings, special roofing details, roof drainage, roof penetrations, equipment curbs, and condition of other construction that will affect roofing system. Review governing regulations and requirements for insurance and certificates if applicable. Review Contractor s Risk Management Plan and OSHA approved Safety Program. Review Contractor s Quality Control program. Review weather conditions. Review roof observation and repair procedures after roofing installation. DELIVERY, STORAGE, AND HANDLING 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, and directions for storing and mixing with other components. Membrane rolls shall be stored lying down on pallets and fully protected from the weather with clean canvas tarpaulins. Unvented polyethylene tarpaulins are not accepted due to the accumulation of moisture beneath them in certain weather conditions that may affect the ease of membrane weldability. 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. All flammable materials shall be stored in a cool, dry area, away from sparks and flames. Discard and legally dispose of liquid material that cannot be applied within its stated shelf life. Project McDonald Hall Roof Replacement 11 OF 18

12 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. Handle and store roofing materials and place equipment in a manner to avoid permanent deflection of deck. WARRANTY Special Warranty: Manufacturer's standard form, without monetary limitation ( No Dollar Limit NDL warranty), in which manufacturer agrees to repair or replace components of membrane roofing system that fail in materials or workmanship within specified warranty period. Failure includes roof leaks. Special warranty shall include all materials and installation from the structural deck up including, but not limited to, substrate board, expansion joints, roof insulation, roofing membrane, base flashings, roofing membrane accessories, fasteners, cover boards, walkway products and other components of membrane roofing system. Warranty Period: 20 years from date of Substantial Completion. Warranty shall include 1 ½ hail warranty and shall not include exclusions for ponding water. Part 2 Products MANUFACTURERS Products: Available Manufacturers: Subject to compliance with performance specifications. Inter-ply Reinforcement to be reinforced polyester knit fabric coated with an adhesive coat to promote a molecular bond between the base fabric and the front and back coats. Manufacturers: Subject to compliance with requirements, substitution request must in accordance with bid documents. Provide products by the manufacturers specified that meet or exceed stated manufacturer qualifications, performance requirements, fire test requirements, physical properties requirements and warranty requirements. Owner has pre-approved the following manufacturers to be in compliance with these standards: Fibertite/Seaman Corporation 50XT or approved equal Project McDonald Hall Roof Replacement 12 OF 18

13 PERFORMANCE SPECIFICATION Thickness: 50 mils (1.1 mm), nominal. Manufactured in 56 X 100 Color: Beige or White. Inter-ply Reinforcement to be 18 x 21 / 1,100 x 1,100 denier weft reinforced polyester knit fabric coated with an adhesive coat to promote a molecular bond between the base fabric and the front and back coats. Mil Thickness Substitution request must comply with the following Minimum Physical Properties: PROPERTY TEST METHOD RESULTS Thickness ASTM D minimum Tear Resistance ASTM D lbs x 50 lbs (8 x 10 sample) Seam Strength ASTM D lbs Breaking Strength ASTM D lbs Tensile Strength ASTM D psi Elongation 20% X 30% Peel Strength no peel Scrim Size 18 X 18 Water Vapor Transition 1.3 Water Absorption <5% Dimensional Stability ASTM D % Low Temperature ASTM D F Flexibility Puncture Resistance Fed. Std. 101B 30 joules pass Method 2031 Hydrostatic Resistance Mil-C-20696C No swelling, cracking or leaking Oil Resistance Mil-C-20696C No swelling, cracking or leaking Coating Adhesion ASTM D-751 Cannot initiate coating peel Accelerated Weathering Carbon Arc with 5,000 hours no cracking, blistering or crazing. AUXILIARY MATERIALS General: Auxiliary materials recommended by roofing system manufacturer for intended use and compatible with membrane roofing. Liquid-type auxiliary materials shall meet VOC limits of authorities having jurisdiction. Sheet Flashing: Manufacturer's standard sheet flashing of same material, type, reinforcement, thickness, and color as sheet membrane. Bonding Adhesive: Manufacturer's standard solvent-based bonding adhesive for membrane, and solvent-based bonding adhesive for base flashings. Project McDonald Hall Roof Replacement 13 OF 18

14 Metal Termination Bars: Manufacturer's standard predrilled aluminum bars with anchors, approximately 1 by 1/8 inch thick; with anchors. Metal Battens: Manufacturer's standard aluminum-zinc-alloy-coated or zinc-coated steel sheet, approximately 1 inch wide by 0.05 inch thick, pre-punched. Fasteners: designed for fastening membrane to substrate, and acceptable to membrane roofing system manufacturer. Factory-coated steel fasteners and metal or plastic plates meeting corrosion-resistance provisions in FMG 4470, designed for fastening membrane to substrate, and acceptable to membrane roofing system manufacturer. Miscellaneous Accessories: Provide pourable sealers, preformed cone and vent sheet flashings, preformed inside and outside corner sheet flashings, T-joint covers, termination reglets, cover strips, and other accessories. Laminated Metal Pre-Finished Coated Metal: Provide pre-finished, weldable coated metal as provided by the roofing system manufacturer, Gauge 24 galvanized steel laminated with polymeric coating. Color: White Wood Nailers: As required by roofing manufacturer Part 3 Execution Examine substrates, areas, and conditions, with Installer present, for compliance with the following requirements and other conditions affecting performance of roofing system. Verify that roof openings and penetrations are in place and set and braced. Verify that wood blocking, curbs, and nailers are securely anchored to roof deck at penetrations and at terminations and verify that nailers match thicknesses of insulation. Proceed with installation only after unsatisfactory conditions have been corrected. FULLY ADHERED ROOFING MEMBRANE INSTALLATION Install roofing membrane over area to receive roofing according to roofing system manufacturer s written instructions. Unroll roofing membrane and allow it to relax before installing it. Project McDonald Hall Roof Replacement 14 OF 18

15 Start installation of roofing membrane in presence of roofing system manufacturer s technical personnel. Accurately align roofing membranes and maintain uniform side and end laps of minimum dimensions required by manufacturer. Stagger end laps. Fully adhered roofing membrane securely at terminations, penetrations, and perimeter of roofing. Apply roofing membrane with side laps shingled with slope of roof deck where possible. Seams: Clean seam areas, overlap roofing membrane, and hot-air weld side and end laps of roofing membrane according to manufacturer s written instructions to ensure a watertight seam installation. Test lap edges with probe to verify seam weld continuity. Apply lap sealant to seal cut edges of roofing membrane. Verify field strength of seams a minimum of twice daily and repair seam sample areas. Repair tears, voids, and lapped seams in roofing membrane that does not meet requirements. In-Splice Attachment: Secure one edge of roofing membrane using fastening plates or metal battens centered within membrane splice and mechanically fasten roofing membrane to roof deck. Field-splice seams. FIELD QUALITY ASSURANCE Pre-Installation Conference: Contractor shall include in their bid, the cost for roofing system manufacturer s technical personnel to attend the Pre-Installation Conference. Final Roof Inspection: Contractor shall include in their bid, the cost for the roofing system manufacturer s technical personnel to inspect roofing installation on completion and submit final inspection report to the Owner s representative. Notify Owner s representative 48 hours in advance of date and time of inspection. Repair or remove and replace components of membrane roofing system where test results or inspections indicate that they do not comply with specified requirements. Additional testing and inspecting, at Contractor s expense, will be performed to determine compliance of replaced or additional work with specified requirements. Project McDonald Hall Roof Replacement 15 OF 18

16 PROTECTING AND CLEANING Protect membrane roofing system from damage and wear during the remaining construction period so as not affect or endanger roofing, inspect roofing for deterioration and damage, describing its nature and extent in a written report, with copies to Owner. Correct deficiencies in or remove membrane roofing system that does not comply with requirements, repair substrates, and repair or reinstall membrane roofing system to a condition free of damage and deterioration at time of Substantial Completion and according to warranty requirements. Clean overspray and spillage from adjacent construction using cleaning agents and procedures recommended by manufacturer of affected construction. **END OF SECTION** Project McDonald Hall Roof Replacement 16 OF 18

17 FLASHING AND SHEET METAL Part 1 General No building design shall include uncapped parapets. Parapet caps shall be metal, not masonry. Part 2 Products N/A Part 3 Execution N/A **END OF SECTION** Project McDonald Hall Roof Replacement 17 OF 18

18 Project McDonald Hall Roof Replacement 18 OF 18