Project Name
Project Address
Project City, Project State Project ZIP
Project Section/Deck / TPO_ST###_075423_Steel/Concrete/Wood
(Rev. 5-2015)

Any time you see the format of [X] [X], for example ([3/4” Fesco Board] [1/2” Retro-Fit Board], choose one of the options and erase the other. When the specification is complete, change all the bold text to normal. Then remove all of the brackets ([ and ]). Note to advanced users: try the “Find and Replace” tool and replace with nil value (blank).

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SECTION 075423 – THERMOPLASTIC POLYOLEFIN (TPO) MEMBRANE ROOFING

Verify that Section titles referenced in this Section are correct for this Project's Specifications; Section titles may have changed.

PART 1 - GENERAL

1.1  Section INCLUDES

  1. TPO Adhered membrane roofing system.
  2. TPO Mechanically fastened membrane roofing system.
  3. TPO Induction welded membrane roofing system.
  4. Cover board.
  5. Roof insulation.
  6. Vapor retarder.
  7. Base Sheet.
  8. Substrate board.

1.2  RELATed SECTIONS

  1. Division05 Section "Steel Decking" for steel roof deck.
  2. Division06 Section "Miscellaneous Rough Carpentry" for wood nailers, cants, curbs, and blocking [and for wood-based, structural-use roof deck panels].
  3. Division07 Section "Sheet Metal Flashing and Trim" for metal roof penetration flashings, flashings, and counter flashings.
  4. Division22 Section "Storm Drainage Piping Specialties" for roof drains.

1.3  REFERENCES

  1. Roofing Terminology: Refer to the following publications for definitions of roofing work related terms in this Section:
  2. ASTMD1079 “Terminology Relating to Roofing and Waterproofing.”
  3. Glossary of NRCA's "The NRCA Roofing and Waterproofing Manual."
  4. Roof Consultants Institute “Glossary of Roofing Terms.”
  5. Sheet Metal Terminology and Techniques: SMACNA “Architectural Sheet Metal Manual.”

Retain below for roofing asphalt complying with ASTMD312; insert PermaMop where required.

1.4  DESIGN CRITERIA

  1. General: Installed roofing membrane system shall remain watertight; and resist specified wind uplift pressures, thermally induced movement, and exposure to weather without failure.
  2. Material Compatibility: Roofing materials shall be compatible with one another under conditions of service and application required, as demonstrated by roofing system manufacturer based on testing and field experience.

Retain below for projects designed per ASCE 7. Remove if Project is FMG (Factory Mutual Global) insured and retain Section D.

  1. Wind Uplift Performance: Roofing system shall be identical to systems that have been successfully tested by a qualified testing and inspecting agency to resist wind uplift pressure calculated in accordance with ASCE7.
  2. Field-of-Roof Uplift Pressure: Insert number> lbf/sq. ft. (kN/sq. m).
  3. Perimeter Uplift Pressure: Insert number> lbf/sq. ft. (kN/sq. m).
  4. Corner Uplift Pressure: Insert number> lbf/sq. ft. (kN/sq. m).

Retain paragraph and subparagraphs below if Project is FMG (Factory Mutual Global) insured or if using FMG requirements as quality standard. Remove and retain Section C if ASCE 7 requirements used.

1.5  SUBMITTALS

  1. Product Data: Manufacturer’s data sheets for each product to be provided.
  2. Detail Drawings: Provide roofing system plans, elevations, sections, details, and details of attachment to other Work, including:

Adjust list below to suit Project.

  1. Base flashings, cants, and membrane terminations.
  2. Tapered insulation, including slopes.
  3. Crickets, saddles, and tapered edge strips, including slopes.
  4. Insulation fastening patterns.
  5. Verification Samples: Provide for each product specified.
  6. Installer Certificates: Signed by roofing system manufacturer certifying that Installer is approved, authorized, or licensed by manufacturer to install roofing system.
  7. Maintenance Data: Refer to Johns Manville’s latest published documents on www.JM.com.
  8. Guarantees: Provide manufacturer’s current guarantee specimen.

1.6  QUALITY ASSURANCE

  1. Installer Qualifications: Qualified firm that is approved, authorized, or licensed by roofing system manufacturer to install manufacturer's product and that is eligible to receive the specified manufacturer's guarantee.
  2. Manufacturer Qualifications: Qualified manufacturer that has UL listing for roofing system identical to that used for this Project.
  3. Testing Agency Qualifications: An independent testing agency with the experience and capability to conduct the testing indicated, as documented according to ASTME329.
  4. Test Reports:
  5. Roof drain and leader test or submit plumber’s verification.
  6. Core cut (if requested).
  7. Roof deck fastener pullout test.

Retain moisture survey subparagraphs below for all re-roof and re-cover applications.

  1. Moisture Survey:

1.  Submit prior to installation, results of a non-destructive moisture test of roof system completed by approved third party. Utilize one of the approved methods:

  1. Infrared Thermography
  2. Nuclear Backscatter
  3. Source Limitations: Obtain all components from the single source roofing manufacturer guaranteeing the roofing system. All products used in the system must be labeled by the single source roofing manufacturer issuing the guarantee.
  4. Fire-Test-Response Characteristics: Provide roofing materials with the fire-test-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.

If UL required, edit UL Fire requirements below.

  1. Exterior Fire-Test Exposure: Class [A] [B] [C]; ASTME108, for application and roof slopes indicated.
  2. Fire-Resistance Ratings: ASTME119, for fire-resistance-rated roof assemblies of which roofing system is a part.

1.7  DELIVERY, STORAGE, AND HANDLING

  1. Deliver roofing materials in original containers with seals unbroken and labeled with manufacturer's name, product brand name and type, date of manufacture, and directions for storage.
  2. Store liquid materials in their original undamaged containers in a clean, dry, protected location and within the temperature range required by roofing system manufacturer.
  3. Protect roof insulation materials from physical damage and from deterioration by sunlight, moisture, soiling, and other sources. Comply with insulation manufacturer's written instructions for handling, storing, and protecting during installation.
  4. Handle and store roofing materials and place equipment in a manner to avoid permanent deflection of deck.

1.8  PROJECT CONDITIONS

  1. Weather Limitations: Proceed with installation only when current and forecasted weather conditions permit roofing system to be installed in accordance with manufacturer's written instructions and guarantee requirements.

1.9  guarantee

  1. Provide manufacturer's system guarantee equal to Johns Manville's Peak Advantage No Dollar Limit Roofing System Guarantee.

Retain options in subparagraph below based on those used on Project. Verify availability of manufacturer's total-system warranty and components included.

  1. Single-Source special guarantee includes roofing membrane, base flashings, liquid applied flashing, roofing membrane accessories, [roof insulation], [fasteners], [cover board], [substrate board], [vapor retarder], [walkway products], [manufacturer’s expansion joints], [manufacturer’s edge metal products], and other single-source components of roofing system marketed by the manufacturer.

Insert correct guarantee term. Contact Johns Manville Technical to verify.

  1. Guarantee Period: [10] [15] [20] years from date of Substantial Completion.
  2. Installer’s Guarantee: Submit roofing Installer's guarantee, including all components of roofing system for the following guarantee period:
  3. Guarantee Period: [Two] [Five] Years from date of Substantial Completion.
  4. Existing Guarantees: Guarantees on existing building elements should not be affected by scope of work.
  5. Installer is responsible for coordinating with building owner’s representative to verify compliance.

PART 2 - PRODUCTS

2.1  THERMOPLASTIC POLYOLEFIN ROOFING MEMBRANE - TPO

Retain this Article if fabric-reinforced thermoplastic polyolefin sheet is required.

  1. Fabric-Reinforced Thermoplastic Polyolefin Sheet: ASTM D 6878, uniform, flexible sheet formed from a thermoplastic polyolefin, internally fabric or scrim reinforced. Basis of Design: JM TPO

Select one thickness in subparagraph below. Not all guarantee terms are available for all products, coordinate with Johns Manville Technical.

  1. Thickness: [45 mils (1.14 mm), minimum] [60 mils (1.52 mm), nominal] [80 mils (2.03 mm), nominal]

2.  Fabric fleece backed: [60 mils (1.52 mm), nominal] [80 mils (2.03 mm), nominal]

  1. Exposed Face Color: [White] [Tan] [Grey]

2.2  AUXILIARY Roofing Materials – Single Ply

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

Select VOC compliant or NO VOC application below. Coordinate accessories selection with membrane and application.

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

Retain one of two paragraphs below depending on type of roofing membrane selected.

  1. Sheet Flashing: Manufacturer's internally reinforced or scrim reinforced, smooth backed membrane with same thickness and color as sheet membrane. Basis of Design: JM TPO

Select applicable bonding adhesive below. Coordinate with selection of "Bonding Adhesive" Paragraph in Part3 "Adhered Roofing Membrane Installation" Article. Coordinate proper adhesive for flashing applications with Johns Manville Technical.

  1. Bonding Adhesive: Manufacturer's standard [solvent] [water]-based bonding adhesive for membrane, and [solvent] [water]-based bonding adhesive for base flashings. Basis of Design: [JM TPO Low VOC Membrane Adhesive] [JM TPO Membrane Adhesive (Low VOC)] [JM TPO Membrane Adhesive (Solvent Based)] [JM TPO Water Based Membrane Adhesive]
  2. Urethane Adhesive: Manufacturer’s two component urethane adhesive formulated to adhere fleece-backed membrane to substrate. Basis of Design: Roofing Systems Urethane Adhesive (RSUA)

Retain first paragraph below if slip sheets are required. Refer to Johns Manville Technical for requirements.

  1. Slip Sheet: Manufacturer's recommended slip sheet, of type required for application. Basis of Design: JM 3 –oz Polyester Slipsheet
  2. Metal Termination Bars: Manufacturer's standard predrilled stainless-steel or aluminum bars, with anchors. Basis of Design: JM Termination Systems

Fasteners required for all applications. Retain fasteners appropriate for application and change of plane terminations.

  1. Fasteners: Factory-coated steel fasteners and metal or plastic plates meeting corrosion-resistance provisions in FMG4470, designed for fastening membrane to substrate, and acceptable to membrane roofing system manufacturer. Basis of Design: [High Load Fasteners and Plates] [Extra High Load Fasteners and Plates] [JM Purlin Fasteners]
  2. Induction Welding Plate: A round specially coated Galvalume® plate with a recessed center and raised flat bonding surface specifically designed for induction welding application. Product: JM TPO RhinoPlates

Edit as required.

  1. Miscellaneous Accessories: Provide pourable sealers, preformed cone and vent sheet flashings, preformed inside and outside corner sheet flashings, T-joint covers, cover strips, and other accessories. Basis of Design: [JM TPO Pourable Sealer A & B, JM TPO Pipe Boots, JM TPO Universal Corners, JM TPO Edge Sealant, JM TPO T-Joint Patch, JM TPO Membrane Cleaner, JM TPO Membrane Primer, JM TPO Membrane Primer (Low VOC), JM TPO Sealing Mastic, JM TPO Cover Tape, JM TPO Detail Membrane, JM TPO Peel & Stick 10" RPS, JM TPO Peel & Stick 6" RTS, JM TPO-Coated Metal, JM TPO Detail Membrane and JM Single Ply Caulk

2.3  AUXILIARY ROOFING System Components

Retain subparagraph below if expansion joints are required.

  1. Expansion Joints: Provide factory fabricated weatherproof, exterior covers for expansion joint openings consisting of flexible rubber membrane, supported by a closed cell foam to form flexible bellows, with two metal flanges, adhesively and mechanically combined to the bellows by a bifurcation process. Provide product manufactured and marketed by single-source membrane supplier that is included in the No Dollar Limit guarantee. Basis of Design: [Expand-O-Flash] [Expand-O-Gard]

Retain subparagraph below if coping flashing is required.

  1. Coping System: Manufacturer’s factory fabricated coping consisting of a base piece and a snap-on cap. Provide product manufactured and marketed by single-source membrane supplier that is included in the No Dollar Limit guarantee. Basis of Design: Presto-Lock Coping

Retain subparagraph below if fascias are required. Specify Presto-Tite for high wind or high value projects.

  1. Fascia System: Manufacturer’s factory fabricated fascia consisting of a base piece and a snap-on cover. Provide product manufactured and marketed by single-source membrane supplier that is included in the No Dollar Limit guarantee. Basis of Design: [Presto Lock Fascia] [Presto-Tite Fascia]
  2. Metal Edge System: Manufacturer’s factory fabricated metal edge system used to terminate the roof at the perimeter of the structure. Provide product manufactured and marketed by single-source membrane supplier that is included in the No Dollar Limit guarantee. Basis of Design: Presto Stop Gravel Stop
  3. Metal Flashing Sheet: Metal flashing sheet is specified in Division07 Section "Sheet Metal Flashing and Trim."

2.4  WALKWAYS

Edit as required.

  1. Flexible Walkways: Factory-formed, nonporous, heavy-duty, slip-resisting, surface-textured walkway pads sourced from membrane roofing system manufacturer. Basis of Design: JM TPO Walkpad

2.5  Cover board

  1. Perlite Board: ASTM C 728, Type 3; composed of expanded perlite, cellulosic fibers, binders and waterproofing agents with top surface seal-coated. Basis of Design: RetroPlus Roof Board

Select Fesco or Retro-Fit Boards for hot asphalt applications, select DuraBoard products for cold adhesive applications.

  1. High-Density Polyisocyanurate: ASTM C 1289, Type II, Class 4, Grade 3, High-density Polyisocyanurate technology bonded in-line to mineral-surfaced, fiber glass reinforced facers with greater than 140 lbs of compressive strength. Basis of Design: [Invinsa Roof Board] [Invinsa FR]
  2. Gypsum Board: ASTMC 1177, glass-mat faced, water-resistant gypsum substrate, [1/4 inch (6 mm)] [1/2 inch (13 mm)] [5/8 inch (16 mm)] thick. Basis of Design: JM Securock Glass-Mat Roof Board
  3. Gypsum Board: ASTM C 1278, non-faced, gypsum and cellulose fiber substrate, [1/4 inch (6 mm)] [1/2 inch (13 mm)] [5/8 inch (16 mm)] thick. Basis of Design: JM Securock Gypsum-Fiber Roof Board

2.6  ROOF INSULATION – deck Flute filler

Edit as required. Coordinate insulation selection and thicknesses indicated on Drawings with adjoining construction, Johns Manville Guarantee requirements, as well as, HVAC design and energy program.

  1. General: Preformed roof insulation boards that comply with requirements and referenced standards, selected from manufacturer's standard sizes and of thicknesses indicated.
  2. Polyisocyanurate Board Insulation: ASTMC1289, Type II, Class 1, Grade 2, Product: ENRGY 3

Choose performance standard or prescriptive thickness. Remove if desired.

  1. Provide metal roof flute filler insulation package with thickness to fill flutes the height of the standing seam.

2.7  ROOF INSULATION

Edit as required. Coordinate insulation selection and thicknesses indicated on Drawings with adjoining construction, Johns Manville Guarantee requirements, as well as, HVAC design and energy program.

  1. General: Preformed roof insulation boards that comply with requirements and referenced standards, selected from manufacturer's standard sizes and of thicknesses indicated.
  2. Polyisocyanurate Board Insulation: ASTMC1289, Type II, Class [1] [2] [3], Grade [2 (20 psi)] [3 (25 psi)], Basis of Design: [ENRGY 3] [ENRGY 3 25 PSI] [ENRGY 3 CGF] [ENRGY 3 25 PSI CGF] [ENRGY 3 AGF] [ENRGY 3 25 PSI AGF] [ENRGY 3 FR] [ENRGY 3 25 PSI FR]

Choose performance standard or prescriptive thickness. Remove if desired.