Sumner High School

Shingle replacements roofs: F, I, O and picnic shelter, Modified Bitumen F1, G, H, J, K, K1, K2, L, M

Standing Seam Copper F2, F3, O1, O2, O3

Asphalt Shingles, Modified Bituminous, Standing Seam Copper, Tuck-pointing 073113 - 1

SECTION 073113 - ASPHALT SHINGLES 22,267 sq. ft.

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, but not limited to:

1. Removal of existing shingles and underlayment materials to the wood substrate.

2. Wood deck replacement unit cost, replace wood decking as needed.

3. Install underlayment, attach with staples.

4. Ice and water shield at valleys, eaves, and penetrations.

5. Install lead flashing to soil stack penetrations.

6. Install new architectural shingles, minimum 6 nails per shingle. Owner to select shingle color upon award.

7. Install all new gutters and downspouts where applicable.

8. Install all new step flashing at flashing locations.

Shingle replacements roofs: F, I, O and picnic shelter, Modified Bitumen F1, G, H, J, K, K1, K2, L, M

Standing Seam Copper F2, F3, O1, O2, O3

Asphalt Shingles, Modified Bituminous, Standing Seam Copper, Tuck-pointing 073113 - 2

1.3 ACTION SUBMITTALS

A. Product Data: For each type of product indicated.

B. Samples for Initial Selection: For each type of asphalt shingle ridge and hip cap shingles indicated.

1. Include similar trim samples and accessories involving color selection.

C. Samples for Verification: For the following products, of sizes indicated, to verify color selected:

1. Asphalt Shingle: Full size.

2. Ridge and Hip Cap Shingles: Full size.

3. Synthetic underlayment.

4. Self-Adhering Underlayment: 12 inches (300 mm) square.

1.4 INFORMATIONAL SUBMITTALS

A. Qualification Data: For qualified Installer.

1.5 QUALITY ASSURANCE

A. Installer Qualifications: Manufacturer's authorized representative who is trained and approved for installation of units required for this Project.

B. Preinstallation Conference: Conduct conference at Project site.

1.6 DELIVERY, STORAGE, AND HANDLING

A. Store roofing materials in a dry, well-ventilated, weathertight location according to asphalt shingle manufacturer's written instructions. Store underlayment rolls on end on pallets or other raised surfaces. Do not double stack rolls.

1. Handle, store, and place roofing materials in a manner to avoid significant or permanent damage to roof deck or structural supporting members.

B. Protect unused underlayment from weather, sunlight, and moisture when left overnight or when roofing work is not in progress.

1.7 PROJECT CONDITIONS

A. Environmental Limitations: Do not deliver or install asphalt shingles until spaces are enclosed and weather tight, wet work in spaces is complete and dry, and temporary HVAC system is operating and maintaining ambient temperature and humidity conditions at occupancy levels during the remainder of the construction period.

1. Install self-adhering sheet underlayment within the range of ambient and substrate temperatures recommended by manufacturer.

Shingle replacements roofs: F, I, O and picnic shelter, Modified Bitumen F1, G, H, J, K, K1, K2, L, M

Standing Seam Copper F2, F3, O1, O2, O3

Asphalt Shingles, Modified Bituminous, Standing Seam Copper, Tuck-pointing 073113 - 3

1.8 WARRANTY

A. Special Warranty: Standard form in which manufacturer agrees to repair or replace asphalt shingles that fail in materials or workmanship within specified warranty period.

1. Failures include, but are not limited to, the following:

a. Manufacturing defects.

b. Structural failures including failure of asphalt shingles to self-seal after a reasonable time.

2. Material Warranty Period: 30 years from date of Substantial Completion, prorated, with first three years nonprorated.

3. Wind-Speed Warranty Period: Asphalt shingles will resist blow-off or damage caused by wind speeds up to 120 mph for five years from date of Substantial Completion.

B. Special Project Warranty: Roofing Installer's Warranty, or warranty form at end of this Section, signed by roofing Installer, covering the Work of this Section, in which roofing Installer agrees to repair or replace components of asphalt shingle roofing that fail in materials or workmanship within specified warranty period.

1. Warranty Period: Three years from date of Substantial Completion.

PART 2 - PRODUCTS

2.1 GLASS-FIBER-REINFORCED ASPHALT SHINGLES

A. Architectural Shingle: ASTM D 3462, laminated, multi-ply overlay construction, glass-fiber reinforced, mineral-granule surfaced, and self-sealing.

1. Manufacturers: Basis of design Owens Corning Duration, subject to compliance with requirements, available manufacturers offering products that may be incorporated into the

Work include the following:

a. Certainteed Landmark.

b. Owners approved equal to be approved prior to bid.

B. Hip and Ridge Shingles: Manufacturer's standard units to match asphalt shingles.

1.9 UNDERLAYMENT MATERIALS

C. Basis of design:

1. Owens Corning Rhino Roof Synthetic Roofing Underlayment.

D. Self-Adhering Sheet Underlayment: Ice and Water Shield.

E. See Editing Instruction No. 1 in the Evaluations for cautions about naming manufacturers.

Retain one of two subparagraphs and list of manufacturers below. See Section 016000 "Product

Shingle replacements roofs: F, I, O and picnic shelter, Modified Bitumen F1, G, H, J, K, K1, K2, L, M

Standing Seam Copper F2, F3, O1, O2, O3

Asphalt Shingles, Modified Bituminous, Standing Seam Copper, Tuck-pointing 073113 - 4

Requirements. “Retain first paragraph below if underlayment is subject to high temperatures.

Most products use a butyl-based adhesive; some use SBS-modified asphalt. Delete paragraph below if using metal open-valley flashings. Retain second option if Class A, fire-test response is required.

2.0 ACCESSORIES

F. Asphalt Roofing Cement: ASTM D 4586, Type II, asbestos free.

G. Roofing Nails: ASTM F 1667; aluminum, stainless-steel, copper, or hot-dip galvanized-steel wire shingle nails, minimum 0.120-inch- (3-mm-) diameter, barbed shank, sharp-pointed, with a minimum 3/8-inch- (9.5-mm-) diameter flat head and of sufficient length to penetrate 3/4 inch

(19 mm) into solid wood decking or extend at least 1/8 inch (3 mm) through OSB or plywood sheathing.

1. Where nails are in contact with metal flashing, use nails made from same metal as flashing.

H. Underlayment Nails: Staples.

2.1 METAL FLASHING AND TRIM

I. General: Comply with requirements in Section 076200 "Sheet Metal Flashing and Trim."

1. Sheet Metal: Aluminum.

J. Fabricate sheet metal flashing and trim to comply with recommendations in SMACNA's

"Architectural Sheet Metal Manual" that apply to design, dimensions, metal, and other characteristics of the item.

PART 3 - EXECUTION

2.2 EXAMINATION

Examine substrates, areas, and conditions, with Installer present, for compliance with requirements for installation tolerances and other conditions affecting performance of the Work.

Examine roof sheathing to verify that sheathing joints are supported by framing and blocking or metal clips and that installation is within flatness tolerances.

Verify that substrate is sound, dry, smooth, clean, sloped for drainage, and completely anchored; and that provision has been made for flashings and penetrations through asphalt shingles.

Prepare written report, endorsed by Installer, listing conditions detrimental to performance of the Work.

Proceed with installation only after unsatisfactory conditions have been corrected.

Shingle replacements roofs: F, I, O and picnic shelter, Modified Bitumen F1, G, H, J, K, K1, K2, L, M

Standing Seam Copper F2, F3, O1, O2, O3

Asphalt Shingles, Modified Bituminous, Standing Seam Copper, Tuck-pointing 073113 - 5

2.3 UNDERLAYMENT INSTALLATION

General: Comply with underlayment manufacturer's written installation instructions applicable to products and applications indicated unless more stringent requirements apply. Retain first paragraph below if a single layer of felt underlayment is required. Roofs with a slope of 4:12 or greater are usually installed with a single underlayment layer. Verify requirements of authorities having jurisdiction.

Single-Layer Underlayment: Install on roof deck parallel with and starting at the eaves. Lap sides a minimum of 2 inches (50 mm) over underlying course. Lap ends at a minimum of 4 inches (100 mm). Stagger end laps between succeeding courses at least 72 inches (1830 mm).

Fasten with felt underlayment staples. Retain first subparagraph below if combining self-adhering sheet and felt underlayment.

Install underlayment on roof deck not covered by self-adhering sheet underlayment. Lap sides of felt over self-adhering sheet underlayment not less than 3 inches (75 mm) in direction to shed water. Lap ends of felt not less than 6 inches (150 mm) over self-adhering sheet underlayment.

Retain subparagraph below for areas subject to high wind speeds. The IBC and the IRC both mandate that the underlayment should be fastened at no more than 36 inches (900 mm) o.c.

where the basic wind speed is equal to or greater than 110 mph (176 km/h).

Install fasteners at no more than 36-inch (900 mm) o.c.

Self-Adhering Sheet Underlayment: Install, wrinkle free, on roof deck. Comply with low-temperature installation restrictions of underlayment manufacturer if applicable. Install at valleys and eaves, lapped in direction to shed water. Lap sides not less than 3-1/2 inches (89 mm). Lap ends not less than 6 inches (150 mm) staggered 24 inches (600 mm) between courses. Roll laps with roller. Cover underlayment within seven days. Retain first paragraph below if double layers of felt underlayment are required. Roofs with slopes of 2:12, but less than 4:12, are usually installed with a second underlayment layer. The side lap and starter course dimensions are based on 36-inch- (914-mm-) wide rolls of felt underlayment. The objective is to maintain double layer felt underlayment coverage with 2 inches (50 mm) to spare. Verify requirements of authorities having jurisdiction. Retain the first paragraph below for installing a single, self-adhering sheet underlayment. Retain the first subparagraph below if primer is required to enhance adhesion to concrete or masonry surfaces such as chimneys or walls.

2.4 METAL FLASHING INSTALLATION

General: Install metal flashings and other sheet metal to comply with requirements in

Section 076200 "Sheet Metal Flashing and Trim."

Install metal flashings according to recommendations in ARMA's "Residential Asphalt Roofing

Manual" and asphalt shingle recommendations in NRCA's "The NRCA Roofing and

Waterproofing Manual. “Retain first paragraph below for apron flashings. Apron flashings provide a weatherproofing transition material where a roof area intersects a head wall.

Common locations for apron flashings are the front downslope side of a dormer or chimney, curbed roof penetrations, and clerestory transitions.

Apron Flashings: Extend lower flange over and beyond each side of downslope asphalt shingles and up the vertical surface. Retain first paragraph below for interleaving metal step flashings

Shingle replacements roofs: F, I, O and picnic shelter, Modified Bitumen F1, G, H, J, K, K1, K2, L, M

Standing Seam Copper F2, F3, O1, O2, O3

Asphalt Shingles, Modified Bituminous, Standing Seam Copper, Tuck-pointing 073113 - 6 between succeeding courses of asphalt shingles that abut vertical surfaces such as chimneys, sidewalls, and skylights.

Step Flashings: Install with a headlap of 2 inches (50 mm) and extend over the underlying asphalt shingle and up the vertical surface. Fasten to roof deck only. Retain the first paragraph below if cricket or backer flashings are required. Retain the first paragraph below if metal open-valley flashings are required. Revise dimensions to suit Project. Retain one or both of first two paragraphs below if applicable.

Rake Drip Edges: Install rake drip edge flashings over underlayment and fasten to roof deck.

Eave Drip Edges: Install eave drip edge flashings below underlayment and fasten to roof sheathing.

2.5 ASPHALT SHINGLE INSTALLATION

General: Install asphalt shingles according to manufacturer's written instructions, recommendations in ARMA's "Residential Asphalt Roofing Manual," and asphalt shingle recommendations in NRCA's "The NRCA Roofing and Waterproofing Manual."

Install starter strip along lowest roof edge, consisting of an asphalt shingle strip with self-sealing strip face up at roof edge.

Extend asphalt shingles 1/2 inch (13 mm) over fasciae at eaves and rakes.

Install starter strip along rake edge. Retain one offset pattern option in first paragraph below for three-tab- and other multitab-strip asphalt shingles. Diagonal installation is recommended by NRCA. Confirm that the offset pattern retained is approved by manufacturer for asphalt shingle specified. Insert a particular offset pattern if required.

Install first and remaining courses of asphalt shingles stair-stepping diagonally across roof deck with manufacturer's recommended offset pattern at succeeding courses, maintaining uniform exposure. Retain the first paragraph below for laminated-strip and no-cutout-strip asphalt shingles. Diagonal installation is recommended by NRCA. Insert a particular offset pattern if required. Retain the first paragraph below if manufacturer recommends racking method for specified asphalt shingles. The IBC and the IRC both state that asphalt shingles have the minimum number of fasteners required by manufacturers and comply with wind-resistance requirements based on Project location. Basic fastening for most asphalt shingles requires four roofing nails; some asphalt shingles require five. The IBC and the IRC both require special methods of fastening where the roof slope exceeds 20:12 and for locations where the basic wind speed is equal to or greater than 110 mph (176 km/h). Verify requirements of authorities having jurisdiction.

Fasten asphalt shingle strips with a minimum of six roofing nails located according to manufacturer's written instructions. Retain the first subparagraph below for steep-sloped roofs. Retain the option if manufacturer requires more roofing nails than in paragraph above.

Retain subparagraph below if asphalt shingles are installed in cold weather and could be subject to high winds. Factory-applied, self-sealing strips do not activate at lower temperatures.

When the ambient temperature during installation is below 50 deg F (10 deg C), seal asphalt shingles with asphalt roofing cement spots. Retain the first paragraph below if woven valleys

Shingle replacements roofs: F, I, O and picnic shelter, Modified Bitumen F1, G, H, J, K, K1, K2, L, M

Standing Seam Copper F2, F3, O1, O2, O3

Asphalt Shingles, Modified Bituminous, Standing Seam Copper, Tuck-pointing 073113 - 7 are required. They are generally limited to three-tab-strip shingles and some laminated-strip shingles. Verify, with manufacturers, acceptance of valley treatment.

Ridge and Hip Cap Shingles: Maintain same exposure of cap shingles as roofing shingle exposure. Lap cap shingles at ridges to shed water away from direction of prevailing winds.

Fasten with roofing nails of sufficient length to penetrate sheathing. Retain subparagraph below if retaining ridge vents.

Fasten ridge cap asphalt shingles to cover ridge vent without obstructing airflow.

END OF SECTION 073113

SECTION 075216.11 - SBS MODIFIED BITUMINOUS MEMBRANE ROOFING, HOT-APPLIED

12,780 sq. ft.

PART 1 - GENERAL

2.7 SUMMARY

The Work consists of the following:

Supply all labor, transportation, material, apparatus, tools, and permits necessary for removal and replacement of existing roof system. Contractors shall verify roof construction and square feet. Refer to roof plan drawing for roof area locations.

Complete removal of existing roofing system including but not limited to membrane, flashings, metal flashings, and insulation down to the underlying roof decking.

Sweep roof deck clean and prime entire concrete with manufacturer’s recommended primer prior to roof insulation application.

Install two layers of 2.6-inch polyisocyanurate insulation to the primed concrete deck. Walk boards into adhesive immediately after installation to achieve solid contact.

Adhere insulation if solid mopping of Type IV hot asphalt.

Install ½ inch layer of wood fiber insulation in solid mopping of Type IV hot asphalt. Walk boards into

Roof F2 only. Base sheet and coverboard installation:

Repair damaged wood decking.

Nail minimum 28 lb. base sheet to the wood deck, 7 inches on center on the laps and 2 rows of 7 inches staggered in the field.

Install ½ inch layer of wood fiber insulation in solid mopping of Type IV asphalt. Walk boards into

Install two (2) ply cold applied modified bitumen roof system with white granule surface.

Shingle replacements roofs: F, I, O and picnic shelter, Modified Bitumen F1, G, H, J, K, K1, K2, L, M

Standing Seam Copper F2, F3, O1, O2, O3

Asphalt Shingles, Modified Bituminous, Standing Seam Copper, Tuck-pointing 073113 - 8

Install one (1) heavy duty base sheet adhered in solid mopping of Type IV hot asphalt.

Plies must be broomed or rolled during installation to ensure proper contact with the hot asphalt.

Install POWER ply Standard Plus FR surfacing sheet in solid mopping of Type IV hot Asphalt.

Plies must be broomed or rolled during installation to ensure proper contact with the hot asphalt.

Install 2-ply modified bitumen base flashings as specified in general flashing requirements.

Install new lead flashings at plumbing stack locations.

Install all sheet metal details per specifications and SMACNA and manufacturer’s requirements and standards.

Install new Kynar coated metal flashings at all metal flashing locations. Install new metal counterflashing/coping, slip metal counterflashing detail at non-removable unit locations, miscellaneous metal flashings and related accessories.

Install new 6-inch box gutters at all gutter locations where roofs are being replaced.

2.8 DEFINITIONS

A. Roofing Terminology: Refer to ASTM D1079 "Standard Terminology Relating to Roofing and

Waterproofing" and applicable edition of NRCA's "The NRCA Roofing Manual: Membrane Roof

Systems" and NRCA’s Glossary for definition of terms related to roofing work in this Section. Retain paragraph below if using traditional roofing asphalt complying with ASTM D312; delete if only SEBS-modified roofing asphalt complying with ASTM D6152 is required.

Hot Roofing Asphalt: Roofing asphalt heated to its Equi viscous temperature, the temperature at which its viscosity is 125 centipoises for mop-applied roofing asphalt and 75 centipoises for mechanical spreader-applied roofing asphalt, within a range of plus or minus 25 deg. F (14 deg. C), measured at the mop cart or mechanical spreader immediately before application.

2.9 PREINSTALLATION MEETINGS

Retain paragraph below if Work of this Section is extensive or complex enough to justify a preinstallation conference. Preinstallation of the roofing conference is recommended with or without a preliminary roofing conference.

Preinstallation Roofing Conference: Conduct conference at Project site. Meet with Owner, Owner's insurer if applicable, testing and inspecting agency representative, roofing Installer, roofing system manufacturer's representative, and installers whose work interfaces with or affects roofing, including installers of roof accessories and roof-mounted equipment.

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

Shingle replacements roofs: F, I, O and picnic shelter, Modified Bitumen F1, G, H, J, K, K1, K2, L, M

Standing Seam Copper F2, F3, O1, O2, O3

Asphalt Shingles, Modified Bituminous, Standing Seam Copper, Tuck-pointing 073113 - 9

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

Examine substrate conditions and finishes for compliance with requirements, including flatness and fastening.

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 temporary protection requirements for the roofing system during and after installation.

Review roof observation and repair procedures after roofing installation.

3.0 ACTION SUBMITTALS

2.9.1.1.1 Product Data: For each type of product indicated.

2.9.1.1.2 Sustainable Design Submittals:

2.9.1.1.2.1 Product Test Reports for Solar Reflectance: For roof materials, indicating that roof materials comply with Solar Reflectance Index requirement.

2.9.1.1.2.2 Product Data and Laboratory Test Reports: For adhesives and sealants, indicating compliance with requirements for low-VOC/low-emitting materials.

2.9.1.1.3 Shop Drawings: For roofing system. Include plans, elevations, sections, details, and attachments to other work. Provide roof plan showing orientation and types of roof deck, orientation of membrane roofing, and fastening spacings and patterns for mechanically fastened components.

2.9.1.1.3.1 Base flashings and built-up terminations.

2.9.1.1.3.2 Tapered insulation, including slopes.

2.9.1.1.3.3 Crickets, saddles, and tapered edge strips, including slopes.

2.9.1.1.4 Samples for Verification: For the following products:

2.9.1.1.4.1 Sheet roofing materials, of color specified for exposed material.

Shingle replacements roofs: F, I, O and picnic shelter, Modified Bitumen F1, G, H, J, K, K1, K2, L, M

Standing Seam Copper F2, F3, O1, O2, O3

Asphalt Shingles, Modified Bituminous, Standing Seam Copper, Tuck-pointing 073113 - 10

3.1 INFORMATIONAL SUBMITTALS

Qualification Data: For Installer, Manufacturer, and Roofing Inspector.

Include letter from Manufacturer written for this Project indicating approval of Installer.

3.2 Manufacturer Certificates:

Submit evidence of compliance with requirements specified in the “Performance Requirements" Article.

Include: External fire resistance submittal.

Product Compatibility: Indicate manufacturer has verified compatibility of roofing system components, including but not limited to: Roofing membrane, flashing sheets, adhesives, and sealants.

Warranties: Unexecuted sample copies of warranties.

Field Quality Control Reports: Reports of Roofing Inspector. Include weather conditions, description of work performed, tests performed, defective work observed, and Contractor's corrective actions taken to correct defective work.

Submit reports within 48 hours after installation.

Manufacturer's Instructions: Submit copy of manufacturer's written installation instructions for specified roofing system.

3.3 CLOSEOUT SUBMITTALS

Maintenance Data: To include in maintenance manuals.

Warranties: Executed copies of warranties.

3.4 QUALITY ASSURANCE

Installer Qualifications: An employer of workers trained and certified by manufacturer, including a full-time on-site supervisor with a minimum of five years' experience installing products comparable to those

Shingle replacements roofs: F, I, O and picnic shelter, Modified Bitumen F1, G, H, J, K, K1, K2, L, M

Standing Seam Copper F2, F3, O1, O2, O3

Asphalt Shingles, Modified Bituminous, Standing Seam Copper, Tuck-pointing 073113 - 11 specified, able to communicate verbally with Contractor, and employees, and qualified by the roofing system manufacturer to install manufacturer's product and furnish warranty of type specified.

Manufacturer Qualifications: Approved manufacturer with roofing systems comparable to those specified for this Project, with a minimum of five years' experience in manufacture of comparable products in successful use in similar applications, and able to furnish warranty with provisions matching specified requirements. Retain paragraph below if Owner allows substitutions but requires strict control over qualifying of substituted manufacturers.

Approval of Comparable Products: Submit the following in accordance with project substitution requirements, within time allowed for substitution review:

3.4.1.1.1.1.1 Contractor's Product Certificate: Submit notarized certificate, indicating products intended for Work of this Section, including product names and numbers and manufacturer names, with statement indicating that products to be provided meet the requirements of the Contract Documents.

3.4.1.1.1.1.2 Product data, including certified independent test data indicating compliance with requirements.

3.4.1.1.1.1.3 Samples of each component.

3.4.1.1.1.1.4 Sample submittal from similar project.

3.4.1.1.1.1.5 Project references: Minimum of five installations of specified products not less than five years old, with Owner and contact information.

3.4.1.1.1.1.6 Sample warranty.

3.4.1.1.1.1.7 Substitutions following the award of contract are not allowed except as stipulated in Division 01 General Requirements.

3.4.1.1.1.1.8 Approved manufacturers must meet separate requirements of Submittals Article.

Roofing Inspector Qualifications: A technical representative of manufacturer not engaged in the sale of products and experienced in the installation and maintenance of the specified roofing system, qualified to perform roofing observation and inspection specified in Field Quality Control Article, to determine

Installer's compliance with the requirements of this Project, and approved by the manufacturer to issue warranty certification. The Roofing Inspector shall be one of the following:

An authorized full-time technical employee of the manufacturer.

An independent party certified as a Registered Roof Observer by the International Institute of Building

Enclosure Consultants (formerly the Roof Consultants Institute) retained by the Contractor or the

Manufacturer and approved by the Manufacturer.

Shingle replacements roofs: F, I, O and picnic shelter, Modified Bitumen F1, G, H, J, K, K1, K2, L, M

Standing Seam Copper F2, F3, O1, O2, O3

Asphalt Shingles, Modified Bituminous, Standing Seam Copper, Tuck-pointing 073113 - 12

Manufacturer's Installation Instructions: Obtain and maintain on-site access to manufacturers’ written recommendations and instructions for installation of products.

3.5 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, approval or listing agency markings, and directions for storing and mixing with other components.

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.

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

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.

3.6 PROJECT / FIELD CONDITIONS

Retain, revise, or delete paragraphs and subparagraphs in this article to suit Project.

Weather Limitations: Proceed with installation only when it exists and forecasted weather conditions permit the roofing system to be installed according to the manufacturer’s written instructions and warranty requirements.

Daily Protection: Coordinate installation of roofing so insulation and other components of roofing system not permanently exposed are not subjected to precipitation or left uncovered at the end of the workday or when rain is forecast.

Provide tie-offs at the end of each day's work to cover exposed roofing and insulation with a course of roofing sheet securely in place with joints and edges sealed.

Complete terminations and base flashings and provide temporary seals to prevent water from entering completed sections of roofing.

Remove temporary plugs from roof drains at the end of each day.

Shingle replacements roofs: F, I, O and picnic shelter, Modified Bitumen F1, G, H, J, K, K1, K2, L, M

Standing Seam Copper F2, F3, O1, O2, O3

Asphalt Shingles, Modified Bituminous, Standing Seam Copper, Tuck-pointing 073113 - 13

Remove and discard temporary seals before beginning work on adjoining roofing.

3.7 WARRANTY

Manufacturer's Warranty: Roof System Manufacturer's standard form in which Manufacturer agrees to repair or replace components of roofing system that fail in materials or workmanship within warranty period, as follows.

Warranty Form: Manufacturer's standard warranty form.

Scope of Warranty: Work of this Section and including sheet metal details and termination details installed by the roof system Installer and approved by the Roof System Manufacturer.

Warranty Period: 20 years from date of completion.

Installer Warranty: Installer's warranty signed by Installer, as follows.

Form of Warranty: Form acceptable to Roofing Manufacturer and Owner.

Scope of Warranty: Work of this Section.

Warranty Period: 3 years from date of completion.

3.8 PRODUCTS

MANUFACTURERS

Basis of Design: The roof system specified in this Section is based upon products of Tremco CPG Inc, Beachwood, OH, (800) 562-2728, www.tremcoroofing.com that are named in other Part 2 articles.

Provide specified products or comparable products for one of the following.

Soprema.

Garland.

Manufacturers of comparable products: Approved by Owner prior to bid.

3.8.1.1.1 Source Limitations: Obtain components for roofing system from same manufacturer as membrane roofing or manufacturer approved by membrane roofing manufacturer.

Shingle replacements roofs: F, I, O and picnic shelter, Modified Bitumen F1, G, H, J, K, K1, K2, L, M

Standing Seam Copper F2, F3, O1, O2, O3

Asphalt Shingles, Modified Bituminous, Standing Seam Copper, Tuck-pointing 073113 - 14

3.9 PERFORMANCE REQUIREMENTS

General Performance: Installed membrane 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. Membrane roofing and base flashings shall remain watertight.

Accelerated Weathering: Roofing system shall withstand 2000 hours of exposure when tested according to ASTM G152, ASTM G154, or ASTM G155.

Impact Resistance: Roof membrane shall resist impact damage when tested according to ASTM

D3746/D3746M, ASTM D4272/D4272M, or the "Resistance to Foot Traffic Test" in FM Approvals

4470.

Flashings and Fastening: Provide base flashings, perimeter flashings, detail flashings and component materials and installation techniques that comply with the requirements and recommendations of the following:

NRCA Roofing Manual (Sixth Edition) for construction details and recommendations.

SMACNA Architectural Sheet Metal Manual (Seventh Edition) for construction details. Retain the following as applicable; referenced section(s) must be included in the Project Manual.

Comply with the requirements of Division 07 Section "Sheet Metal Flashing and Trim".

Exterior Fire-Test Exposure: ASTM E 108 or UL 790, Class A; for application and roof slopes indicated, as determined by testing identical membrane roofing materials by a qualified testing agency. Materials shall be identified with appropriate markings of applicable testing agency.

Solar Reflectance Index: Not less than 78 when calculated according to ASTM E1980, based on testing identical products by a qualified testing agency.

4.0 MATERIALS, GENERAL

Material Compatibility: Roofing materials shall be compatible with one another and adjacent materials under conditions of service and application required, as demonstrated by roof membrane manufacturer based on testing and field experience. Retain "FM Global Material Standards"

Paragraph below if FM material standards apply, but proposed system is not an FM RoofNav-listed system. Each product specified must be listed in RoofNav for its proposed use in the roof assembly.

Shingle replacements roofs: F, I, O and picnic shelter, Modified Bitumen F1, G, H, J, K, K1, K2, L, M

Standing Seam Copper F2, F3, O1, O2, O3

Asphalt Shingles, Modified Bituminous, Standing Seam Copper, Tuck-pointing 073113 - 15

FM Global Material Standards: Roofing, base flashings, and component materials shall be identical to materials that comply with requirements in FM Global 4470 as part of a roofing system listed or approved by FM Global. Identify applicable materials with FM Global markings.

4.1 ROOF MEMBRANE MATERIALS

Base-Ply Sheet is the first ply in the roof membrane. Use this term to differentiate it from ply sheets of a different type/product.

Base-Ply Sheet:

SBS-modified asphalt-coated composite glass fiber mat / glass fiber scrim sheet, ASTM D6163

Type III Grade S.

Basis of design product: Tremco, POWER ply Heavy Duty Base Sheet.

Tensile Strength at 0 deg. F (18 deg. C), minimum, ASTM D5147: Machine direction, 220 lbf/in (38 kN/m); Cross machine direction, 190 lbf/in (33 kN/m).

Elongation at 0 deg. F (-18 deg. C), minimum, ASTM D5147: Machine direction, 3.0 percent; Cross machine direction, 3.5 percent.

Tear Strength at 77 deg. F (25 deg. C), minimum, ASTM D5147: Machine direction 220 lbf (975N); Cross machine direction, 240 lbf (1065N).

Low Temperature Flexibility, minimum, ASTM D5147: 0 deg. F (-18 deg. C).

Thickness, minimum, ASTM D5147: 0.120 inch (3.0 mm).

SBS Modified Bituminous Membrane Granule-Surfaced Cap Sheet:

SBS/SIS/SEBS-modified asphalt-coated glass fiber reinforced sheet, granular surfaced, ASTM

D6163 Type III Grade G.

Basis of design product: Tremco, POWERply Plus HT FR.

Exterior Fire-Test Exposure, ASTM E108: Class A.

Tensile Strength at 77 deg. F (25 deg. C), minimum, ASTM D5147: Machine direction

220 lbf/in (28 kN/m); Cross machine direction 220 lbf/in (29 kN/m).

Tear Strength at 77 deg. F (25 deg. C), minimum, ASTM D5147: Machine direction, 280 lbf (1315 N); Cross machine direction 300 lbf (1195 N).

Shingle replacements roofs: F, I, O and picnic shelter, Modified Bitumen F1, G, H, J, K, K1, K2, L, M

Standing Seam Copper F2, F3, O1, O2, O3

Asphalt Shingles, Modified Bituminous, Standing Seam Copper, Tuck-pointing 073113 - 16

Elongation at 77 deg. F (25 deg. C), minimum, ASTM D5147: Machine direction, 6.4 percent; Cross machine direction, 7.0 percent.

Low Temperature Flex, maximum, ASTM D5147: -25 deg. F (-31 deg. C).

Thickness, minimum, ASTM D5147: 0.134 inch (3.4 mm).

Flashing Backer Sheet:

SBS-modified asphalt-coated composite glass fiber mat / glass fiber scrim sheet, ASTM D6163 Type III Grade S.

Basis of design product: Tremco, POWER ply Heavy Duty Base Sheet.

Tensile Strength at 0 deg. F (18 deg. C), minimum, ASTM D5147: Machine direction, 220 lbf/in (38 kN/m); Cross machine direction, 190 lbf/in (33 kN/m).

Elongation at 0 deg. F (-18 deg. C), minimum, ASTM D5147: Machine direction, 3.0 percent; Cross machine direction, 3.5 percent.

Tear Strength at 77 deg. F (25 deg. C), minimum, ASTM D5147: Machine direction 220 lbf (975N); Cross machine direction, 240 lbf (1065N).

Low Temperature Flexibility, minimum, ASTM D5147: 0 deg. F (-18 deg. C).

Thickness, minimum, ASTM D5147: 0.120 inch (3.0 mm).

Flashing Sheet:

Flashing Sheet: Same as cap sheet.

Basis of design product: Flashing Sheet: Same as cap sheet.

Detailing Fabric:

Woven Glass Fiber Mesh, Vinyl-Coated: Non-shrinking, non-rotting, vinyl-coated woven glass mesh for reinforcing flashing seams, membrane laps, and other roof system detailing.

Basis of design product: Tremco, BURmesh.

Tensile strength, 70 deg. F, min ASTM D146: Warp, 65 lbf/in (285 N); fill, 75 lbf/in (310

N).

Shingle replacements roofs: F, I, O and picnic shelter, Modified Bitumen F1, G, H, J, K, K1, K2, L, M

Standing Seam Copper F2, F3, O1, O2, O3

Asphalt Shingles, Modified Bituminous, Standing Seam Copper, Tuck-pointing 073113 - 17

Color: Aqua green.

4.2 ASPHALT MATERIALS

Asphalt primer, water-based, polymer modified.

Basis of design product: Tremco, TREMprime WB.

Volatile Organic Compounds (VOC), maximum, ASTM D3960: 2 g/L.

Color: Brown/black.

Hot-melt asphalt adhesive, ASTM D312 Type IV.

Basis of design product: Tremco, Premium IV Adhesive.

Softening Point, min/max, ASTM D36: 215–225 deg. F (100–105 deg. C).

Ductility at 77 deg. F, (25 deg C) minimum, ASTM D113: 1.5 cm.

Penetration at 77 deg. F (25 deg. C), min/max, ASTM D5: 15–25 dmm.

4.3 AUXILIARY MEMBRANE ROOFING MATERIALS

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

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

Select one or more of the following paragraphs as applicable to roof system. Refer to Tremco

Flashing Matrix for product compatibilities. These products are typically used for 3-course stripping along with reinforcing fabrics. Retain "Asphalt Roofing Cement / Mastic" Paragraph below if asphalt roofing cement is used to adhere flashings or integral metal sheet flashings and is acceptable to roofing system manufacturer.

Asphalt Roofing Cement / Mastic:

Roof Cement, Asphalt-Based: ASTM D4586, Type II, Class I, fibrated roof cement formulated for use in installation and repair of asphalt ply and modified bitumen roofing plies and flashings; UL-classified for fire resistance.

Basis of design product: Tremco, ELS.

Shingle replacements roofs: F, I, O and picnic shelter, Modified Bitumen F1, G, H, J, K, K1, K2, L, M

Standing Seam Copper F2, F3, O1, O2, O3

Asphalt Shingles, Modified Bituminous, Standing Seam Copper, Tuck-pointing 073113 - 18

Volatile Organic Compounds (VOC), maximum, ASTM D3960: 190 g/L.

Non-Volatile Matter, ASTM D4586: 85 percent.

Resistance to sag ASTM D4586: 1/8 in. (3 mm).

Stripping Reinforcing Fabric:

Woven Glass Fiber Mesh, Vinyl-Coated: Non-shrinking, non-rotting, vinyl-coated woven glass mesh for reinforcing flashing seams, membrane laps, and other roof system detailing.

Basis of design product: Tremco, BURmesh.

Tensile strength, 70 deg. F, min ASTM D146: Warp, 65 lbf/in (285 N); fill, 75 lbf/in (310

N).

Color: Aqua green.

Joint Sealant: Elastomeric joint sealant compatible with roofing materials, with movement capability appropriate for application.

Joint Sealant, Polyurethane: ASTM C920, Type S, Grade NS, Class 50 single-component moisture curing sealant, formulated for compatibility and use in dynamic and static joints;

paintable.

Basis of design product: Tremco, TremSEAL Pro.

Volatile Organic Compounds (VOC), maximum, ASTM D3960: 40 g/L.

Hardness, Shore A, ASTM C661: 40.

Adhesion to Concrete, ASTM C794: 35 pli.

Tensile Strength, ASTM D412: 350 psi (2410 kPa).

Color: Closest match to substrate.

Fasteners: Factory-coated steel fasteners and metal or plastic plates meeting corrosion-resistance provisions in FM Global 4470, designed for fastening roofing components to substrate, tested by manufacturer for required pullout strength, and acceptable to roofing system manufacturer.

Retain the following when applicable; referenced section must be included in the Project

Manual.

Shingle replacements roofs: F, I, O and picnic shelter, Modified Bitumen F1, G, H, J, K, K1, K2, L, M

Standing Seam Copper F2, F3, O1, O2, O3

Asphalt Shingles, Modified Bituminous, Standing Seam Copper, Tuck-pointing 073113 - 19

Metal Flashing Sheet: Metal flashing sheet is specified in Division 07 Section "Sheet Metal Flashing and Trim."

Miscellaneous Accessories: Provide miscellaneous accessories recommended by roofing system manufacturer.

4.4 ROOF INSULATION MATERIALS

Roof Insulation, General: Preformed roof insulation boards manufactured or approved by roofing manufacturer, selected from manufacturer's standard sizes suitable for application, of thicknesses indicated. Retain the following for tapered systems which are comprised of flat-stock base layer(s) and tapered stock upper layer. New roofs require a slope of not less than 1/4 inch/ft. Replacement roofs should be installed at 1/4 inch/ft when possible, however a lesser slope of 1/8 inch/ft may be acceptable; confirm applicable code requirement. Saddles, crickets, edge strips, etc. must be twice the slope of the roof and are listed under the general requirement above.

Tapered Insulation: Provide factory-tapered insulation boards fabricated to slope of 1/8 inch per

12 inches (1:96) unless otherwise indicated. Retain the following for all roof assemblies using flat or tapered insulation and requiring saddles, crickets, edge strips, drain sumps or any other miscellaneous tapered components.

Provide preformed saddles, crickets, tapered edge strips, and other insulation shapes were indicated for sloping to drain. Fabricate to slopes indicated, not less than two times the roof slope.

Roof Insulation:

Board Insulation, Polyisocyanurate: CFC- and HCFC- free, with recycled content glass-fiber mat facer on both major surfaces, ASTM C1289 Type II Class 1.

Basis of design product: Tremco, Trisotech Insulation.

Compressive Strength, ASTM D1621: Grade 2: 20 psi (138 kPa).

Conditioned Thermal Resistance at 75 deg. F (24 deg. C): 14.4 at 2.5 inches (50.8 mm) thick.

4.5 INSULATION ACCESSORIES

Roof Insulation Cover Board:

Shingle replacements roofs: F, I, O and picnic shelter, Modified Bitumen F1, G, H, J, K, K1, K2, L, M

Standing Seam Copper F2, F3, O1, O2, O3

Asphalt Shingles, Modified Bituminous, Standing Seam Copper, Tuck-pointing 073113 - 20

Board Insulation, Cellulosic fiber: With water-resistant binders, non-asphaltic primer coated on four sides and chemically treated for deterioration, ASTM C208, Type II, Grades 1 and 2.

Basis of design product: Tremco/Blue Ridge Structodek High Density Fiberboard.

Compressive strength, ASTM C165: 15 lbf/sq. in.

Thermal resistance at 75 deg. F (24 deg C.) ASTM C518: R 1.3.

Recycled content, pre-consumer: 20 percent.

Rapidly renewable content: 6 percent.

Thickness: 1/2 inch (13 mm).

Roof Insulation Adhesive:

Hot-melt asphalt adhesive, ASTM D312 Type IV.

Basis of design product: Tremco, Premium IV Adhesive.

Softening Point, min/max, ASTM D36: 215–225 deg. F (100–105 deg. C).

Ductility at 77 deg. F, (25 deg C) minimum, ASTM D113: 1.5 cm.

Penetration at 77 deg. F (25 deg. C), min/max, ASTM D5: 15–25 dmm.

Insulation Cant Strips: ASTM C208, Type II, Grade 1, cellulosic-fiber insulation board.

Tapered Edge Strips: ASTM C208, Type II, Grade 1, cellulosic-fiber insulation board.

Substrate Joint Tape: Minimum 6 inch (150 mm) wide, coated, glass-fiber joint tape.

4.6 EXECUTION

EXAMINATION

Examine substrates, areas, and conditions, with Installer present, for compliance with the following requirements and other conditions affecting performance of roofing system: Retain those paragraphs below that pertain to the deck and substrate conditions of the project.

Shingle replacements roofs: F, I, O and picnic shelter, Modified Bitumen F1, G, H, J, K, K1, K2, L, M

Standing Seam Copper F2, F3, O1, O2, O3

Asphalt Shingles, Modified Bituminous, Standing Seam Copper, Tuck-pointing 073113 - 21

Verify that roof openings and penetrations are in place and curbs are set and braced and that roof drain bodies are securely clamped in place. Retain paragraph below if project will be let with wood cants, blocking, and nailers installed under another trade subcontract.

Verify that, blocking, curbs, and Nailers are securely anchored to roof deck at penetrations and terminations and that Nailers match thickness of insulation. wood cants Retain the following for all projects, except for retrofit/recover over existing roofing system components to remain in place.

Verify that substrate is sound and dry.

Existing Concrete Roof Deck:

Verify that concrete substrate, is visibly dry and free of moisture. Test for moisture according to ASTM F2659 or other recognized test method utilizing non-destructive, electronic moisture meter. When fastening components to concrete deck, instead of adhering, the following is not applicable.

Verify adhesion of new roofing components to concrete.

Proceed with installation only after unsatisfactory conditions have been corrected.

4.7 PREPARATION

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

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. Include and edit concrete deck priming when applicable for vapor retarder. Coordinate with Insulation Installation Article for priming concrete deck in preparation for adhered insulation or adhering membrane directly to deck. Refer to product data for priming requirements.

Concrete Surface Priming: Prime surface of concrete deck with asphalt primer at rate required by manufacturer and allow primer to dry.

4.8 INSTALLATION, GENERAL

Install the roofing system in accordance with manufacturer’s written instructions, approved shop drawings, and Contract Documents.

Shingle replacements roofs: F, I, O and picnic shelter, Modified Bitumen F1, G, H, J, K, K1, K2, L, M

Standing Seam Copper F2, F3, O1, O2, O3

Asphalt Shingles, Modified Bituminous, Standing Seam Copper, Tuck-pointing 073113 - 22

\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. Retain first paragraph below if tie-ins to existing roofing are required.

Install roof membrane and auxiliary materials to tie into existing roofing to maintain weathertightness of transition.

4.9 ROOFING INSTALLATION DETAILS

Choose only one of the following two NRCA Installation Details paragraphs. The first is a short version of the second.

Retain the first "NRCA Installation Details" Paragraph below and delete following Paragraph and selected subparagraphs if Project drawings include adequate roofing installation details.

NRCA Installation Details: Install roofing system in accordance with applicable NRCA Manual Plates and NRCA recommendations; modify as required to comply with manufacturer's approved details and perimeter fastening requirements of FM Global references if applicable.

5.0 INSULATION INSTALLATION

Comply with built-up roofing manufacturer's written instructions for installing roof insulation.

Coordinate installing membrane roofing system components, so insulation is not exposed to precipitation or left exposed at the end of the workday.

\Cant Strips: Install and secure preformed 45-degree cant strips at junctures of built-up roofing with vertical surfaces or angle changes greater than 45 degrees.

Tapered Insulation and Crickets: Install tapered insulation under area of roofing to conform to slopes indicated. Include the bracketed option when roof slope is less than 1/4 inch in 12 inches.

Where crickets are indicated or required to provide positive slope to drain, make slope of cricket’s minimum of two times the roof slope, not less than 1/4 inch in 12 inches (1:48).

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 (6 mm) with insulation.

Shingle replacements roofs: F, I, O and picnic shelter, Modified Bitumen F1, G, H, J, K, K1, K2, L, M

Standing Seam Copper F2, F3, O1, O2, O3

Asphalt Shingles, Modified Bituminous, Standing Seam Copper, Tuck-pointing 073113 - 23

Cut and fit insulation within 1/4 inch (6 mm) of Nailers, projections, and penetrations.

Insulation manufacturers usually recommend thickness in the first paragraph below as maximum thickness of a single insulation layer. Edit paragraphs below to establish thickness of insulation required by code and project conditions. Coordinate with drawings. Consider using actual thickness in lieu of R-value/RSI to avoid disputes based upon alternate methods of calculating thermal resistance of insulation. (The base layer of insulation is the first, single, board layer, not the total flat-stock layer(s).) The minimum thickness of the base layer is often dictated by the wind uplift tested assembly, referring to applicable test report. R-Value is an imperial system unit of measurement

(ft2·°F·h/BTU) and the RSI Value is a metric system unit of measurement (sq. m.·K/W).

To convert an R-Value to an RSI Value, divide the R-Value by 5.678. Conversely, to convert an RSI Value to an R-Value, multiply the RSI Value by 5.678.NOTE: PIMA recommends two layers of equal thickness totaling [3.6 inches (91 mm) = R-20] [4.4 inches (112 mm) = R-25] [5.2 inches (132 mm) = R-30] [6.2 inches (157 mm) = R35]

[7.0 inches (178 mm) = R-40]. NRCA recommend using R-5.0 per each 1 inch of thickness. The thickness of any layer should not be less than the minimum thickness required by the wind-tested assembly listing.

Install insulation under area of roofing to achieve required thickness. Where overall insulation thickness is 2.7 inch (70 mm) or greater, install two or more layers with joints of each succeeding layer staggered from joints of previous layer a minimum of 6 inches (150 mm) in each direction. Retain one or both Insulation System Paragraphs below as appropriate for

Project. Insert values and select either IP or SI unit of measure. If both IP and SI measurements are required use in-line editing to revise. IBC refers to R-value for Continuous Insulation (CI).

Insulation System for Flat Roof Deck: Install insulation as follows: CAUTION! "Average R-value" is ONLY permitted in jurisdictions under IECC-2021. IECC-2018 and prior

MUST use "Minimum thickness" and "Continuous R-value."IECC 2021’s Section

C402.2.1.1-Tapered, Above-Deck Insulation Based on Thickness indicates when tapered insulation is used as a component of a roof-ceiling assembly R-value calculation, the tapered insulation’s R-value contribution to…