13155 Background Specs.pdf

242601 – Roof Replacement Facilities Services Deer Ridge Correctional Institution

Background & Statement of Work

Background: The Deer Ridge Correctional Institution (DRCI) Minimum, located at 3920 E

Ashwood Rd, Madras, OR 97741, was built in 2006. This correctional institution is comprised of eight (8) buildings, covering 175,487 square feet. The original, mechanically attached thermoplastic polyolefin (TPO) is at the end of life with membrane breakdown throughout.

Project: Remove all vertical roofing down to the deck and properly dispose of. Remove all existing flashing membrane at penetrations and perimeters in their entirety.

Install the specified roof insulation system and roof recovery boards in accordance with Division 7 Section “Roof Insulation 07-22-20”. Adhere one (1) ply of the specified SBS modified bitumen base roofing ply in the field of the roof using hot asphalt. Adhere one (1) ply of the specified SBS modified bitumen base flashing ply at perimeters and penetrations of the roof via hot asphalt. Adhere one (1) ply of the specified thermoplastic membrane roof ply in the field of the roof in the specified polyurethane foam adhesive or hot asphalt. Adhere one (1) ply of the specified thermoplastic membrane flashing ply in the specified adhesive. Heat weld all seams of the thermoplastic membrane roof ply. Heat weld the thermoplastic utility roll at all field membrane end laps and vertical flashing seams as noted. Install any additional roof flashings, counter-flashings, slip metal and perimeter metal edge and coping in accordance with Division 7 Section “Sheet Metal Flashing and Trim 07-60-00”.

2025 DOC

DRCI

RE-ROOFING PROCEDURES 07 20 00 -

SECTION 07 20 00

MODIFIED BITUMINIOUS MEMBRANE RE-ROOFING PROCEDURES

1. GENERAL

1.1 SUMMARY

A. The section includes partial removal of the existing roofing system in preparation for new roof system.

B. Remove the existing base flashings, sheet metal, vent stack flashings, and accessories completely to the exposed substrate. Sweep and clean all debris off the deck and adjacent areas. Remove and dispose of existing pitch pans.

C. Clean the existing roof surface of all loose dirt, debris, organic growth, and related debris.

D. Remove existing siding above mansard roof sections in preparation for new roofing and metal flashings.

1.2 SYSTEM DESCRIPTION

A. Remove all vertical membrane flashings, metal flashings, and related components.

B. Remove roof mounted equipment as required to install new roof, membrane and curbs. Replace as required.

1.3 RELATED SECTIONS

A. Division 7 Section “Modified Bituminous/Thermoplastic Membrane Hybrid Roofing”.

B. Division 7 Section “Roof Insulation”.

C. Division 7 Section “Sheet Metal Flashing and Trim”.

1.4 QUALITY ASSURANCE

A. Perform Work in accordance with industry standards.

1.5 PRE-INSTALLATION MEETINGS

A. Convene a minimum of two weeks prior to commencing work of this section.

1.6 ENVIRONMENTAL REQUIREMENTS

A. Do not remove existing roofing membrane when weather conditions threaten integrity of building contents or intended continued occupancy.

B. Maintain continuous temporary protection prior to and during installation of new roofing system to keep building weather tight.

1.7 SCHEDULING

A. Schedule Work to coincide with commencement of installation of new roofing system.

1.8 COORDINATION

A. Remove only existing roofing materials, being replaced with new materials, as weather will permit.

B. Coordinate Work with other affected mechanical and electrical work associated with roof penetrations.

2. PRODUCTS

2.1 COMPONENTS

A. Temporary Protection: Sheet polyethylene or fiber reinforced plastic; furnish weights to retain sheeting in position.

3. EXECUTION

3.1 EXAMINATION

A. Verify existing roof surface is clear and ready for work of this section.

B. Perform pullout testing on roof decks as necessary.

3.2 PREPARATION

A. Remove vertical base flashings of the roof system including the perimeter structure and roof penetrations prior to installing the new roof system. Remove the existing metal coping cap, counter flashings, wall skirt, and related accessories.

B. Sweep the roof surface clean of loose matter.

C. Remove loose refuse and dispose of the site in a manner compliant with all local, state and federal laws / regulations for waste disposal.

D. Ensure existing substrate is sloped, and/or level and plumb, as per the project documents prior to the laying of new coverboard.

3.3 EXISTING CONSTRUCTION

A. Remove metal counter flashings.

B. Remove existing roofing perimeter base flashings, flashings around roof protrusions, metal edge systems, coping cap systems, pitch pans and pockets, insulation vents, and leaders as necessary.

C. Remove inadequate or damaged curbing.

D. Replace removed curbing w/ new curbing where required.

E. Sweep exposed roof surface clean of loose matter.

F. Remove loose refuse and dispose off site in a manner compliant with all local, state, and federal laws/regulations for waste disposal.

END OF SECTION 07 20 00

ROOF INSULATION 07 22 - 1

SECTION 07 22 00

ROOF INSULATION

PART 1 - GENERAL

1.1 SUMMARY:

A. This section includes information for the installation of the roof recovery board, over the properly prepared existing membrane.

B. The Contractor shall install a wood fiber recovery board using mechanical fasteners.

C. Smooth any build up of materials along the insulation to prevent air pockets. Shave, trim and grind down any irregularitites to make all new board fit properly.

1.2 RELATED SECTIONS

A. Division 07 20 00 “Modified Bituminous Membrane Re-Roofing Procedures” B. Division 07 55 00 “Modified Bituminous/ Thermoplastic Membrane Hybrid” C. Division 07 60 00 “Sheet Metal Flashing and Trim”.

1.3 SUBMITTALS

A. Product Data: Provide manufacturer’s specification data sheets for each product in accordance with this specification.

1.4 QUALITY ASSURANCE

A. Certify that roof system furnished is approved by an approved third-party testing facility in accordance with ASTM E108, Class A for external fire and meets local or nationally recognized building codes.

B. Pre-installation Meeting: Refer to Division 7 Section Modified Bituminous Membrane

Roofing specifications for pre-installation meeting requirements.

1.7 DELIVERY, STORAGE AND HANDLING

A. Deliver products to site with seals and labels intact, in manufacturer's original containers, dry and undamaged.

B. Store all insulation materials in a manner to protect them from the wind, sun and moisture damage prior to and during installation. Any insulation that has been exposed to any moisture shall be removed from the project site.

C. Keep materials enclosed in a watertight, ventilated enclosure (i.e. tarpaulins).

D. In accordance with the manufacturer’s recommendations, immediately remove the plastic wrapping on the recovery boards and cover with a watertight, ventilated enclosure (i.e.

tarpaulins). Prevent the formation of condensation on the boards.

E. Store materials off the ground and roof surfaces. Any warped, broken or wet insulation boards shall be removed from the site.

ROOF INSULATION 07 22 - 2

F. Do not leave unused materials on the roof overnight or when roofing work is not in progress unless protected from weather and other moisture sources.

G. It is the responsibility of the contractor to secure all material and equipment on the job site.

If any material or equipment is stored on the roof, the contractor must make sure that the integrity of the deck is not compromised at any time. Damage to the deck caused by the contractor will be the sole responsibility of the contractor and will be repaired or replaced at his expense.

PART 2 - PRODUCTS

2.1 APPROVED EQUIVALENT

A. Wood Fiber Board: Struktodek High Density B. Or approved equal

2.2 INSULATION MATERIALS

A. Thermal Insulation Properties and Approved Insulation Boards.

1. Nonasphaltic, Primed Red, high-density roofing board:

Qualities: ASTM C208, Type II, Grade 1 and Grade 2

Board Size: Four feet by four feet (4’ x 4’) or four feet by eight feet (4’x8’)

Thickness: One-Half (1/2) inch

R-Value: 1.3

2.3 RELATED MATERIALS

A. Fiber Cant and Tapered Edge Strips: Fiberboard insulation units of sizes/shapes indicated as per the approved manufacturer.

1. Acceptable Manufacturers:

Johns Manville

GAF

Approved Equal

B. Drain Sumps: Shall be fabricated from tapered polyisocyanurate insulation and shall ensure complete drainage of the roof system.

1. Sumps shall be 1’ x 1’ in size and fabricated from ½”:1’ tapered polyisocyanurate

C. Asphalt Primer: V.O.C. compliant, ASTM D41.

D. Roof Insulation Fasteners:

ROOF INSULATION 07 22 - 3

1. OMG Standard corrosion resistant roofing screw fastener with Sentri coating, or equal, as recommended by roof membrane manufacturer.

2. Approved fasteners with three (3) inch coated disc to meet or exceed the specific project wind uplift requirements listed in Section 1.16 “Design and Performance Criteria” of Division 7 Section “Modified Bituminous/ Thermoplastic Membrane Hybrid Roofing”. Length as required to penetrate roof deck per the screw manufacturers recommendation or one (1) inch if not listed.

PART 3 - EXECUTION

3.1 INSPECTION OF SURFACES

A. Roofing contractor shall be responsible for preparing an adequate substrate to receive insulation.

1. Verify that deck surfaces and project conditions are ready to receive work of this section.

2. Verify that deck is supported and secured to structural members.

3. Verify that drain bowl assemblies are installed and set at proper height to permit a slope of ½” per foot within the sump. The sump shall be a 1 (1) foot square sump, unless noted otherwise and/or required to be smaller or larger to accommodate drainage around equipment.

4. Verify that work which penetrates roof deck has been completed.

5. Verify that wood nailers are properly and securely installed.

6. Examine surfaces for defects, rough spots, ridges, depressions, foreign material, moisture, and unevenness.

7. Do not apply insulation until substrate is dry.

8. Broom or air blow clean substrate immediately prior to application.

9. Use additional insulation to fill depressions and low spots that would otherwise cause ponding water.

3.2 INSTALLATION

A. Mechanically Fastened Insulation System to Wood Deck.

1. Approved coverboard insulation boards shall be installed with joints in continuous straight lines, perpendicular to roof slopes with joints staggered between rows. Tightly butt substrate boards together. Boards shall be fully attached to the deck with an approved mechanical fastening system. As a minimum, the amount of fasteners shall be in accordance with the following:

• Six (11) fasteners per 4’ x 8’ board in Zone 1 (field of roof)

• Nine (17) fasteners per 4’ x 8’ board in Zone 2 (perimeter of roof)

• Twelve (22) fasteners per 4’ x 8’ board in Zone 3 (corners of roof)

2. Placement of any fastener from edge of insulation board shall be a minimum of three inches, and a maximum of six (6) inches.

3. Minimum penetration into deck shall be per the screw manufacturer’s field confirmed pull tests, but not less than one and one-half (1.5) inches.

D. General Installation Requirements.

ROOF INSULATION 07 22 - 4

1. Approved system shall be sumped and tapered around roof drains. Ensure the roof drains, and scuppers, are set at the proper height to provide a smooth transition from the roof insulation system into the sump. Tapered insulation sump shall start at the drain with a thickness required to achieve ½” per foot slope for the specified minimum dimension two (2) feet from the center line of the drain unless noted otherwise. Install tapered insulation sump in such a way to provide proper slope for runoff. Shape insulation with tool as required so completed surface is smooth and flush with ring of drain. Under no circumstances will the membrane be left unsupported in an area greater than one quarter (¼) inch. Install recovery board over tapered insulation sump as required.

2. All boards shall be cut and fitted where the roof deck intersects a vertical surface. The boards shall be cut to fit a minimum of one quarter (¼) inch away from the vertical surface.

3. Install no more coverboard at one time than can be roofed on the same day.

4. Install temporary water cut-offs at completion of each day’s work and remove upon resumption of work. Install an envelope water stop at the edge of insulation to prevent water infiltration into new insulation/roof system.

5. Cant Strips/Tapered Edge Strips: Install preformed fourty five (45) degree cant strips at junctures of vertical surfaces. Provide preformed, tapered edge strips at perimeter of edges of roof that do not terminate at vertical surfaces and/or indicated on the drawings. Tape joints of insulation as per manufacturer’s requirements. The wall/cant juncture will be examined for air passage. If airflow is present, joint between cant and wall will be sealed with closed cell joint backing and joint sealant.

3.4 CLEANING

A. Remove debris and cartons from roof deck. Leave insulation clean and dry, ready to receive roofing membrane.

END OF SECTION 07 22 00

DOC

THERMOPLASTIC/MODIFIED BITUMINOUS MEMBRANE HYBRID ROOF SYSTEM 07 55 10 - 1

SECTION 07 55 10

MODIFIED BITUMINOUS/THERMOPLASTIC MEMBRANE HYBRID ROOFING

PART 1 - GENERAL

1.1 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, including the Conditions of the Contract and Division 7 Specification Sections, apply to this section.

1.2 SUMMARY -

A. This Section includes Thermoplastic/Modified Bituminous Membrane Roofing over prepared substrate and insulation system.

1. Remove all vertical roofing down to the deck and properly dispose of.

2. Remove all existing flashing membrane at penetrations and perimeters in their entirety per project plans and scope.

3. Install the specified roof insulation system and roof recovery boards in accordance with Division 7 Section “Roof Insulation 07-22-20”.

4. Adhere one (1) ply of the specified SBS modified bitumen base roofing ply in the field of the roof using hot asphalt

6. Adhere one (1) ply of the specified SBS modified bitumen base flashing ply at perimeters and penetrations of the roof via hot asphalt.

7. Adhere one (1) ply of the specified thermoplastic membrane roof ply in the field of the roof in the specified polyurethane foam adhesive or hot asphalt.

8. Adhere one (1) ply of the specified thermoplastic membrane flashing ply in the specified adhesive.

9. Heat weld all seams of the thermoplastic membrane roof ply.

10. Heat weld the thermoplastic utility roll at all field membrane end laps and vertical flashing seams as noted.

11. Install any additional roof flashings, counter-flashings, slip metal and perimeter metal edge and coping in accordance with Division 7 Section “Sheet Metal Flashing and Trim 07-60-00”

1.3 SECTION INCLUDES

A. This portion of the specification sets forth the general requirements and describes materials and workmanship for installing the 2-ply thermoplastic/modified bituminous membrane hybrid roof system over prepared substrates.

B. Roofing contractor shall furnish and install all materials described herein unless specifically noted otherwise.

THERMOPLASTIC/MODIFIED BITUMINOUS MEMBRANE HYBRID ROOF SYSTEM 07 55 10 - 2

C. This section is for work on roofs where indicated on the drawings as otherwise.

1.4 RELATED SECTIONS

A. Division 7 Section “Re-Roofing Procedures 07 20 00”.

B. Division 7 Section “Roof Insulation 07 22 00”.

J. Division 7 Section “Sheet Metal Flashing and Trim 07 60 00”.

1.5 REFERENCES

A. American Society of Civil Engineers (ASCE):

1. ASCE 7-16, Minimum Design Loads for Buildings and Other Structures.

B. American Society for Testing and Materials (ASTM):

1. ASTM D41, Specification for Asphalt Primer Used in Roofing, Dampproofing and Waterproofing.

2. ASTM D132 - Standard Specification for Asphalt in Roofing.

3. ASTM D451, Test Method for Sieve Analysis of Granular Mineral Surfacing for Asphalt Roofing Products.

4. ASTM D1079, Terminology Relating to Roofing, Waterproofing and Bituminous Materials.

5. ASTM D1863, Specification for Mineral Aggregate Used as a Protective Coating for Roofing.

6. ASTM D4586, Specification for Asphalt Roof Cement.

7. ASTM D4601, Specification for Asphalt Coated Glass Fiber Base Sheet Used in Roofing.

8. ASTM D5147, Test Method for Sampling and Testing Modified Bituminous Sheet Materials.

9. ASTM D6162, Specification for Styrene Butadiene Styrene (SBS) Modified Bituminous Sheet Materials Using a Combination of Polyester and Glass Fiber Reinforcements.

10. ASTM D6163, Specification for Styrene Butadiene Styrene (SBS) Modified Bituminous Sheet Materials Using Glass Fiber Reinforcements.

11. ASTM D6754, Standard Specification for Ketone Ethylene Ester (KEE) Sheet Roofing.

12. ASTM E108, Test Methods for Fire Test of Roof Coverings.

13. Sheet Metal and Air Conditioning Contractors National Association, Inc. (SMACNA) - Architectural Sheet Metal Manual.

13. ANSI-SPRI ES-1 Wind Design Standard for Edge Systems used with Low Slope Roofing Systems.

C. Factory Mutual Research (FM):

THERMOPLASTIC/MODIFIED BITUMINOUS MEMBRANE HYBRID ROOF SYSTEM 07 55 10 - 3

1. Roof Assembly Classifications.

D. National Roofing Contractors Association (NRCA):

1. Roofing and Waterproofing Manual.

E. Underwriters Laboratories, Inc. (UL):

1. Fire Hazard Classifications.

F. Warnock Hersey (WH):

1. Fire Hazard Classifications.

1.6 SYSTEM DESCRIPTION

A. It is the intent of this specification to install a long-term, quality roof system that meets or exceeds all current NRCA guidelines as stated in the most recent edition of the NRCA Roofing and Waterproofing Manual. Please discuss any concerns with the Owner and Roofing System Manufacturer.

1.7 DISCLOSURE OF MATERIALS AND SUBSTITUTIONS

A. The materials outlined herein are the type of materials that should be used in this project.

When a particular make or trade name is specified, it shall be indicative of the minimum standard required. The bidder must disclose in his/her bid package the manufacturer that they intend to use on this Project if other than the Basis of Design manufacturer. If no manufacturer is listed, the bidder’s bid is accepted only with the use of the Basis of Design manufacturer and the bidder must use the Basis of Design manufacturer.

i. Bidder will not be allowed to change materials after the bid opening date.

ii. If an alternate material is bid, the material must be equal or exceed the specifications, and submitted by the bidding Roofing Contractor to the Owner for approval and include the following:

1. Written application with explanation of why it should be considered.

2. Material product data sheets and test results with engineer or architect stamp indicating that each material presented meets or exceeds the basis of design material.

3. A certificate from an accredited testing laboratory comparing the physical and performance attributes of the proposed material with those materials denoted as pre-approved systems or the characteristics noted in the material specification section, including but not limited to the following:

a. Modified roofing membrane(s) and flashings substantiating Flexibility, Tensile Strength and Tear Strength. Testing for SBS membrane must follow standard ASTM D 5147 test methods. Testing shall be performed at 77°F. Tests at 0°F shall not be considered.

THERMOPLASTIC/MODIFIED BITUMINOUS MEMBRANE HYBRID ROOF SYSTEM 07 55 10 - 4

4. The manufacturer must have current ISO 9001:2015 certification for the manufacturing of the products to be utilized on this project.

5. The materials installed for the waterproofing membrane must be physically manufactured and guaranteed by the material supplier.

6. A sample warranty by the manufacturer of the thermoplastic/modified bituminous membrane roofing system. The manufacturer must be the organization that physically manufacturers and guarantees the thermoplastic/modified bituminous roof membranes, and pre-manufactured metal coping cap system.

7. In making a request for submission, Bidder/Contractor represents:

a. He/she has personally investigated the proposed product or method and determined that it is equal or superior in all respects to that specified.

b. He/she will provide the same guarantee for substitution as for the product and method specified.

iii. The Owner reserves the right to be the final authority on the acceptance or rejection of any or all bids, proposed alternate roofing systems or materials that has met ALL specified requirement criteria.

iv. Alternate material submissions shall be sent to the Owner by the bidding Roofing

Contractor. Only substitutes approved in writing by the Owner will be considered.

1.8 SUBMITTALS

A. Submit under provisions of Contract Documents, SGA and this section.

B. Product Data: Provide manufacturer’s technical product data for each type of roofing product specified. Include data substantiating that materials comply with specified requirements.

C. Manufacturer’s Installation Instructions: Submit installation instructions and recommendations indicating special precautions required for installing the membrane.

D. Manufacturer’s Fire Compliance Certificate: Certify that roof system furnished is approved by Factory Mutual in accordance with ASTM E108, Class A for external fire and meets local or nationally recognized building codes.

E. Manufacturer’s Wind Uplift Certificate: The physical manufacturer of the modified bitumen membrane must provide certification that the proposed roof system will be secured properly to the structure to meet or exceed the specific project wind uplift requirements per Section

1.17 Design and Performance Criteria of this specification.

THERMOPLASTIC/MODIFIED BITUMINOUS MEMBRANE HYBRID ROOF SYSTEM 07 55 10 - 5

F. Manufacturer’s Manufacturing Certificate: Certify that modified membrane materials to be used on this project are physically manufactured by the distributing manufacturer and conform to requirements specified herein, are chemically and physically compatible with each other, and are suitable for inclusion within the total roof system specified herein.

G. Manufacturer’s Manufacturing Certificate: Submit a certified copy of the roofing manufacturer’s ISO 9001:2008 compliance certificate.

H. Test Reports: Submit test reports, prepared by an independent testing agency, for all modified bituminous sheet roofing, indicating compliance with ASTM D5147. Testing must be performed at 77°F. Tests at 0°F will not be considered.

I. Shop Drawings

J. Design Loads: Submit copy of manufacturer's minimum design load calculations according to ASCE 7-16, Method 2 for Components and Cladding, prepared by an engineer employed by the system manufacturer as a full-time staff engineer. In no case shall the design loads be taken to be less than those detailed in article 1.17 of this specification.

1.9 QUALIFICATIONS

A. Manufacturer: Company specializing in manufacturing the products specified in this section with minimum 12 years documented experience and having ISO 9001:2008 certification.

B. Manufacturer: The manufacturer must also have current ISO 9001:2008 certification for the manufacturing.

C. Installer: Company specializing in modified bituminous roofing installation with a minimum 5 years experience and certified by roofing system manufacturer as qualified to install manufacturer’s roofing materials.

D. Installer’s Field Supervision: Maintain a full-time Supervisor/Foreman on job site during all phases of roofing work and at any time roofing work is in progress. Maintain proper supervision of workmen. Always Maintain a copy of the specifications in the possession of the Supervisor/Foremen and on the roof.

1. Always Maintain a copy of the Contract Documents in the possession of the

Supervisor/Foreman and on the roof.

E. Source Limitations: Obtain all components of roof system from a single manufacturer.

Secondary products that are required shall be recommended and approved in writing by the roofing system Manufacturer.

1. Upon request of the Owner, submit Manufacturer’s written approval of secondary components in list form, signed by an authorized agent of the Manufacturer.

2. Related components specified to be warranted by one manufacturer

THERMOPLASTIC/MODIFIED BITUMINOUS MEMBRANE HYBRID ROOF SYSTEM 07 55 10 - 6

F. Immediately correct roof leakage during construction. If the Contractor does not respond within twenty-four (24) hours, the Owner has the right to hire a qualified contractor and backcharge the original contractor.

G. Insurance Certification: Assist Owner in preparation and submittal of roof installation acceptance certification as may be necessary in connection with fire and extended coverage insurance on roofing and associated work.

1.10 PRE-INSTALLATION CONFERENCE

A. Pre-Roofing Conference: Convene a pre-roofing conference approximately two (2) weeks before scheduled commencement of modified bituminous roofing system installation and associated work.

B. Require attendance of installer of each component of associated work, installers of deck or substrate construction to receive roofing work, installers of rooftop units and other work in and around roofing which must precede or follow roofing work (including mechanical work if any), Owner, roofing system manufacturer’s representative, and other representatives directly concerned with performance of the Work, including (where applicable) Owner’s insurers, testing agencies and governing authorities.

C. Objectives of conference to include:

1. Review foreseeable methods and procedures related to roofing work.

2. Tour representative areas of roofing substrates (decks), inspect and discuss condition of substrate, roof drains, curbs, penetrations and other preparatory work performed by others.

3. Review structural loading limitations of deck and inspect deck for loss of flatness and for required attachment.

4. Review roofing system requirements (drawings, specifications and other contract documents).

5. Review required submittals both completed and yet to be completed.

6. Review and finalize construction schedule related to roofing work and verify availability of materials, installer’s personnel, equipment and facilities needed to make progress and avoid delays.

7. Review required inspection, testing, certifying and material usage accounting procedures.

8. Review weather and forecasted weather conditions and procedures for coping with unfavorable conditions, including possibility of temporary roofing (if not mandatory requirement).

9. Record discussion of conference including decisions and agreements (or disagreements) reached and furnish copy of record to each party attending. If substantial disagreements exist at conclusion of conference, determine how disagreements will be resolved and set date for reconvening conference.

10. Review notification procedures for weather or non-working days.

THERMOPLASTIC/MODIFIED BITUMINOUS MEMBRANE HYBRID ROOF SYSTEM 07 55 10 - 7

D. The Owner’s Representative will designate one of the conference participants to record the proceedings and promptly distribute them to the participants for record.

E. The intent of the conference is to resolve issues affecting the installation and performance of roofing work. Do not proceed with roofing work until such issues are resolved the satisfaction of the Owner. This shall not be construed as interference with the progress of Work on the part of the Owner.

1.11 DELIVERY, STORAGE AND HANDLING

A. Deliver products to site with seals and labels intact, in manufacturer’s original containers, dry and undamaged.

B. Store and handle roofing sheets in a dry, well-ventilated, weather-tight place to ensure no possibility of significant moisture exposure. Store rolls of felt and other sheet materials on pallets or other raised surface. Stand all roll materials on end. Cover roll goods with a canvas tarpaulin or other breathable material (not polyethylene).

C. In accordance with the manufacturer’s recommendations, immediately remove the plastic wrapping on the nonstructural, water-resistant, fiber-reinforced roof board and roof recovery boards and cover with a watertight, ventilated enclosure (i.e. tarpaulins). Prevent the formation of condensation on the boards.

D. Do not leave unused materials on the roof overnight or when roofing work is not in progress unless protected from weather and other moisture sources.

E. It is the responsibility of the contractor to secure all material and equipment on the job site. If any material or equipment is stored on the roof, the contractor must make sure that the integrity of the deck is not compromised at any time. Damage to the deck caused by the contractor will be the sole responsibility of the contractor and will be repaired or replaced at his expense.

1.12 MANUFACTURER’S INSPECTIONS

A. When the project is in progress, the roofing system manufacturer will provide the following:

1. Keep the Owner informed as to the progress and quality of the work as observed.

2. Provide job site inspections a minimum of two (2) days a week with reports to the Owner.

3. Report to the Owner in writing any failure or refusal of the Contractor to correct unacceptable practices called to the Contractor’s attention.

4. Confirm after completion that manufacturer has observed no applications procedures in conflict with the specifications other than those that may have been previously reported and corrected.

1.13 PROJECT CONDITIONS

THERMOPLASTIC/MODIFIED BITUMINOUS MEMBRANE HYBRID ROOF SYSTEM 07 55 10 - 8

A. Proceed with roofing work only when existing and forecasted weather conditions will permit unit of work to be installed in accordance with manufacturer’s recommendations and warranty requirements. The temperature of the modified membranes, adhesives, substrate surfaces and ambient shall be a minimum of 50 degrees F and rising.

B. Do not apply roofing insulation or membrane to damp deck surface.

C. Do not expose materials vulnerable to water or sun damage in quantities greater than can be weatherproofed during same day.

1.14 SEQUENCING AND SCHEDULING

A. Sequence installation of roofing with related units of work specified in other sections to ensure that roof assemblies including roof accessories, flashing, trim and joint sealers are protected against damage from effects of weather, corrosion and adjacent construction activity.

B. Fully complete the installation of insulation system and base roofing ply assembly, and/or the installation of the thermoplastic cap roof ply each day. Phase construction between the base roofing ply and thermoplastic cap roof ply (top ply) is acceptable.

1.16 WARRANTY

A. Upon completion of installation, and acceptance by the Owner, the manufacturer will supply to the Owner a single-source, thirty (30) year No Dollar Limited (NDL) Edge-to-Edge Warranty covering the roof system. Warranty shall include the thermoplastic/modified bituminous membrane hybrid roof system, pre-manufactured metal coping cap system, metal wall panels, flashings, expansion joints, and the transition between all systems, and shall be an Edge-to-Edge roof warranty provided by ONE manufacturer.

B. Installer will submit a minimum of a two (2) year warranty to the membrane manufacturer.

C. At the request of the Owner, the manufacturer will provide an annual inspection of the roof.

These inspection requests can occur for the life of the warranty.

1.17 DESIGN AND PERFORMANCE CRITERIA

A. Uniform Wind Uplift Load Capacity

1. Installed roof system shall withstand negative (uplift) design wind loading pressures complying with the following criteria.

a. Design Code: ASCE 7-16, ASD

b. Category IV Building with an Importance Factor of 1.

c. Wind Speed: 109 mph

THERMOPLASTIC/MODIFIED BITUMINOUS MEMBRANE HYBRID ROOF SYSTEM 07 55 10 - 9

d. Exposure Category: C

1.18 SITE CONDITIONS

A. Field measurements and material quantities:

1. Contractor shall have SOLE responsibility for accuracy of all measurements, estimates of material quantities and sizes, and site conditions that will affect work.

B. Existing Conditions:

1. Building space directly under roof area covered by this specification will be utilized by on-going operations. Do not interrupt Owner operations unless prior written approval is received from Owner.

C. Waste Disposal:

1. Do not re-use, re-cycle or dispose of materials except in accordance with all applicable regulations. The use of products is responsible for proper use and disposal of product containers.

D. Safety Requirements:

1. All application, material handling, and associated equipment shall conform to and be operated in conformance with OSHA safety requirements.

2. Comply with federal, state, local and Owner fire and safety requirements.

3. Advise Owner whenever work is expected to be hazardous to Owner, employees, and/or operators.

4. Maintain a crewman as a floor area guard whenever roof decking is being repaired or replaced.

5. Maintain fire extinguisher within easy access whenever power tools, roofing kettles, fuels, solvents, torches and open flames are being used.

PART 2 – PRODUCTS

2.1 ACCEPTABLE MANUFACTURERS

A. When a particular trade name or performance standard is specified it shall be indicative of the minimum standard required. Product names for the materials used in this section shall be based on performance characteristics of the modified bitumen roof system manufactured by The Garland Company, Cleveland, OH, ((503) 522-7626) and shall form the basis of design.

B. This specification is based on the performance characteristics of the system identified herein.

Any proposed alternate systems, specified or not, must meet or exceed the following listed

THERMOPLASTIC/MODIFIED BITUMINOUS MEMBRANE HYBRID ROOF SYSTEM 07 55 10 - 10

characteristics and be submitted for approval. Additionally, all Warranty Criteria (Section 1.16) and Design and Performance Criteria (Section 1.17) must be met and submitted as well as all items listed in the Disclosure of Materials and Substitutions (Section 1.7). Failure of a system to meet all requirements of this specification will not be approved.

C. Provide primary products, including each type of thermoplastic roof membrane, base roofing ply, base flashing ply, thermoplastic membrane flashing ply, adhesives, asphalt, and miscellaneous flashing materials from a single source roof manufacturer. Provide secondary products (insulation, mechanical fasteners, etc.) only as recommended by the roof manufacturer of primary products for use with the roof system specified.

D. The following manufacturers are acceptable, providing they meet these specifications and the minimum standards stated.

a. The Garland Company, Inc. (Basis of Design)

b. Approved Equal

2.2 SYSTEM DESCRIPTION

A. 2-Ply thermoplastic/modified bituminous membrane roofing work including but not limited to:

1. Remove the existing roofing vertical base flashing assembly down to the substrate.

2. Prepare the roofing deck in accordance with Division 7 Section 07 20.

3. Install the specified roof insulation system and recovery board in accordance with

Division 7 Section “Roof Insulation 07-22”.

4. Base Roofing Ply: FLEXBASE 80 or approved equal; One (1) ply of 80 mil thick SBS Base Sheet fully adhered to substrate using specified asphalt.

5. Hot Applied Inter-ply Adhesive: Garlastic KM Plus or approved equal; hot bitumen, premium SEBS polymer modified asphalt-based adhesive.

6. Base Flashing Ply: TRI-BASE PREMIUM SHEET or approved equal; One (1) ply of a 60 mil SBS (Styrene-Butadiene-Styrene) double-coated Polyester-Fiberglass-Polyester base flashing ply sheet covered by an additional layer of the modified bitumen membrane set in the specified hot applied asphalt-based adhesive

7. Hot Applied Flashing Adhesive: Garlastic KM Plus or approved equal

8. Thermoplastic Inter-ply Foam Adhesive: KEE-LOCK SPATTER SPRAY or approved equal; two-component, low rise, solvent free, polyurethane foam adhesive.

A. Or Garlastic KM Plus or approved equal.

9. Thermoplastic Membrane Roofing Ply: KEE-STONE FB 60 or approved equal; 60 mil thermoplastic cap sheet roofing membrane modified with Ketone EthyleneEster (KEE)

THERMOPLASTIC/MODIFIED BITUMINOUS MEMBRANE HYBRID ROOF SYSTEM 07 55 10 - 11

reinforced with a polymer coated polyester scrim; polyester fleece bonded to the backside.

10. Thermoplastic Flashing Adhesive: KEE-LOCK WB FLASHING ADHESIVE or approved equal; acrylic, pressure sensitive, solvent-free adhesive designed for non-fleeceback KEE membranes.

11. Thermoplastic Membrane Flashing Ply: KEE-STONE NF 60 or approved equal; 60 mil, non-fleeceback thermoplastic cap sheet roofing membrane with Ketone EthyleneEster (KEE) reinforced with polymer coated polyester scrim.

2.3 BITUMINOUS MATERIALS AND ACCESSORIES

A. Asphalt Primer: V.O.C. compliant, ASTM D-41.

B. Asphalt Roofing Mastic: V.O.C. compliant, ASTM D-2822, Type II.

C. Flashing Adhesive: Garlastic KM Plus or approved equal; Kee-lock WB Flashing adhesive or approved equal.

D. Elastomeric Asphaltic Sealant: GARLA-FLEX SEALANT or approved equal.

2.4 THERMOPLASTIC MATERIALS AND ACCESSORIES

A. Thermoplastic Inter-ply Foam Adhesive: KEE-LOCK SPATTER SPRAY or approved equal; two-component, low rise, solvent free, polyurethane foam adhesive.

B. Thermoplastic Flashing Adhesive: KEE-LOCK WB FLASHING ADHESIVE or approved equal; acrylic, pressure sensitive, solvent-free adhesive designed for non-fleeceback KEE membranes.

C. Thermoplastic Accessories: KEE factory welded, non-fleeceback, reinforced membrane or approved equal compliant with ASTM D 6754 standards.

a. Universal Conical Boot

b. Split Pipe Boots (1” to 6”)

c. Square Split Boot (2” x 2”, 3” x 3”, 4” x 4”, 5” x 5”, 6” x 6”)

d. Inside Corner

e. Outside Corner

f. T-Joint Cover

D. Thermoplastic Mastic: KEE-LOCK MASTIC or approved equal; white, polyether, Zero VOC trowel grade mastic for cold applied applications.

E. Thermoplastic Mastic Sealant: KEE-LOCK WATER OFF SEALANT or approved equal;

2.5 SHEET MATERIALS

A. A. Base Roofing Ply: FLEXBASE 80 or approved equal;

THERMOPLASTIC/MODIFIED BITUMINOUS MEMBRANE HYBRID ROOF SYSTEM 07 55 10 - 12

1. FLEXBASE 80: ASTM D6163, Type III; A 80 mil SBS modified membrane with two layers of woven fiberglass scrim reinforcement with the following minimum performance requirements according to ASTM D5147.

Properties (Finished Membrane):

Tensile Strength (ASTM D5147) 2 in/min. @73.4 +/- 3.6°F MD 225 lbf/in CMD 225 lbf/in

Tear Strength (ASTM D5147) 2 in/min. @ 73.4 +/- 3.6°F MD 300 lbf CMD 300 lbf

Elongation at Maximum Tensile (ASTM D5147)

2 in/min. @ 73.4 +/- 3.6°F MD 4.0% CMD 4.0%

Low Temperature Flexibility (ASTM D5147): Passes -30°F

Recycled Content 15% Post-Consumer

Thickness 80 Mils

B. Base Flashing Ply: TRI-BASE PREMIUM or approved equal;

1. TRI-BASE PREMIUM SHEET: Double coated Polyester-Fiberglass-Polyester scrim with the following minimum performance requirements according to ASTM D5147.

Properties (Finished Membrane):

Tensile Strength (ASTM D5147) 2 in/min. @73.4 +/- 3.6°F MD 315 lbf/in CMD 315 lbf/in

Tear Strength (ASTM D5147) 2 in/min. @ 73.4 +/- 3.6°F MD 550 lbf CMD 550 lbf

Elongation at Maximum Tensile (ASTM D5147)

2 in/min. @ 73.4 +/- 3.6°F MD 5.0% CMD 6.0%

Low Temperature Flexibility (ASTM D5147): Passes -10°F

Pliability (ASTM D146) Pass

Mass of Desaturated Polyester/Glass Mat 4.0 lb./100 sq. ft.

(ASTM D146)

Surfacing and Stabilizer (ASTM D4601) Max 50%

Asphalt (ASTM D226) 15 lb./100 sq. ft.

Recycled Content 31% Post-Consumer

THERMOPLASTIC/MODIFIED BITUMINOUS MEMBRANE HYBRID ROOF SYSTEM 07 55 10 - 13

Thickness 60 mils

C. Thermoplastic Membrane Field Ply: KEE-STONE FB 60 or approved equal

1. KEE-STONE FB 60: 60 mil thermoplastic cap sheet roofing membrane modified with Ketone EthyleneEster (KEE) reinforced with a polymer coated polyester scrim; polyester fleece bonded to the backside ASTM D 6754, Breaking Strength (ASTM D 751) 375 lbf 1668 N

Tear Strength (ASTM D 751) 120 lbf 534N

Elongation at Break (ASTM D5147) 40%

Low Temperature Flexibility (ASTM D 2136): Passes -40°F (-40°C)

Puncture Resistance (ASTM D 751) 161 lbs.

Factory Seam Strength (ASTM D 751, Grab Method) 620 lbf. Min.

Thickness over fiber, min. 30 mils

D. Thermoplastic Membrane Flashing Ply: KEE-STONE NF 60 FLASHING or approved equal

1. KEE-STONE FB 60: 60 mil, non-fleeceback thermoplastic cap sheet roofing membrane with Ketone EthyleneEster (KEE) reinforced with polymer coated polyester scrim.

ASTM D 6754.

Breaking Strength (ASTM D 751) 375 lbf 1668 N

Tear Strength (ASTM D 751) MD 145 lbf XD 200 lbf

Elongation at Break (ASTM D 751) MD 30% XD 35%

Elongation at Break, strip > 90% of original

Low Temperature Flexibility (ASTM D 2136): Passes -40°F (-40°C)

E. End Lap Seam Stripping Ply: KEE-STONE UTILITY ROLL or approved equal

1. KEE-STONE UTILITY ROLL: 60 mil, six (6) inch wide unreinforced thermoplastic membrane modified with Ketone EthlyeneEster (KEE) for use as a stripping ply to cover a seam in the KEE-STONE FB 60 system and to field wrap difficult to flash penetrations.

2.6 SURFACINGS

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A. Thermoplastic Modified Membrane Roofing Cap Ply: KEE-STONE FB 60; White thermoplastic membrane modified with Ketone EthyleneEster (KEE) or approved equal.

a. Reflectivity ………………………………………….0.87

b. Emittance…………………………………………….0.88

c. SRI…………………………………………………...110

2.7 RELATED MATERIALS

A. Nails and Fasteners: Non-ferrous metal or hot dipped galvanized fasteners complying with ASTM A153 and connectors complying with ASTM A653, Class G185; Type 304 or Type 316 stainless steel fasteners and connectors shall be used with new generation of pressure-treated wood; except that hard copper nails shall be used with copper; aluminum or stainless steel nails shall be used with aluminum; and stainless steel nails shall be used with stainless steel. Fasteners shall be self-clinching type of penetrating type as recommended by the manufacturer of the wood blocking/nailer material. Nails and fasteners shall be flush-driven through flat metal discs of not less than one (1) inch diameter. Omit metal discs when one-piece composite nails or fasteners with heads not less than one (1) inch diameter are used.

B. Metal Discs: Flat discs or caps of zinc-coated sheet metal not lighter than twenty eight (28) gauge and not less than one (1) inch in diameter. Form discs to prevent dishing. Bell or cup shaped caps are not acceptable.

C. Metal Flashing Sheet, Pre-Manufactured Metal Snap on Fascia System and Pre-Manufactured

Metal Coping Cap System: Metal flashing sheet is specified in Division 7 Section “Sheet Metal Flashing and Trim”.

D. Lead Flashing Sheet: Meets Federal Specification QQ-L-201, Grade B, four (4) pounds per square foot.

E. Metal Termination Bars:

1. Shall be heavy flat bar aluminum unless otherwise recommended by membrane manufacturers.

2. Material shall be .125” x 1” (minimum) aluminum conforming to ASTM B-221, mill finish.

F. Urethane Sealant: One part, non-sag sealant as provided by or recommended by the membrane manufacturer for moving joints.

1. Tensile Strength (ASTM D412) 250 psi

2. Ultimate Elongation (ASM D412) 950%

3. Hardness, Shore A (ASTM C920) 35

4. Adhesion-in-Peel (ASTM C920) 25 pli

5. 100% Modulus (ASTM D412) 50 psi

6. Bond (Durability-Class 25, ASTM C920) Passes

7. Service Temperature Range -40°F to +180°F

8. Stain and Color Change (ASTM C920) Passes

9. Tack Free Time (ASTM C679 (max 72 hrs.) 16 hrs.

10. Weep and Sag (ASTM C920 (max 3/16”(4mm))) Passes

11. Weight loss after heat aging (ASTM C920 (max 10%)) Passes

THERMOPLASTIC/MODIFIED BITUMINOUS MEMBRANE HYBRID ROOF SYSTEM 07 55 10 - 15

G. Liquid Flashing System: LIQUITEC or approved equal; Two-component, 100% solids polyurea fluid applied membrane.

H. Primer: Prime all exposed metal, lead sleeves and lead drain pans, wood and concrete block surfaces with compatible roof system material and as manufactured, supplied and recommended by roof system manufacturer.

I. Miscellaneous Accessories: Provide those recommended by roofing system manufacturer.

3.1 EXAMINATION

A. Examine substrate surfaces to receive modified bituminous membrane roof system and associated work and conditions under which roofing will be installed. Do not proceed with roofing until unsatisfactory conditions have been corrected in a manner acceptable to the manufacturer.

B. Prior to installing the finish modified membrane roofing ply, the contractor must notify the roof system manufacturer representative, and Owner, to examine the roof area for high and low spots. It may be necessary to mist the roof with water to identify the problem areas. The contractor will correct all problem areas identified. This examination should take place no less than 24 hours in advance of installing the finished membrane.

C. Verify that deck surfaces and project conditions are ready to receive work of this section.

D. Verify that deck is supported and secured to structural members.

E. Verify that deck is clean and smooth, free of depressions, projections or ripples, and is properly sloped to drains.

F. Verify that adjacent roof members do not vary more than 1/4 inch in height.

G. Verify that deck surfaces are dry, free of snow or ice, not rotten or deteriorated, do not have bacterial growth and are structurally sound.

H. Confirm that moisture content within the roof decks, wood blocking and nailers does not exceed twelve (12) percent by moisture meter tests.

I. Verify that openings, curbs, pipes, conduit, sleeves, ducts, and other items which penetrate the roof are set solidly, and that wood cant strips, wood nailing strips and reglets are set in place. Verify that all roof curb heights are satisfactory and that the wood blocking height

THERMOPLASTIC/MODIFIED BITUMINOUS MEMBRANE HYBRID ROOF SYSTEM 07 55 10 - 16

along the perimeter of the building and/or roof levels is satisfactory to provide positive roof pitch away from the building edge.

J. Contractor is responsible to verify existing substrate is plumb/level, or sloped, as stated in/on the project documents prior to installation of the insulation system. All defects in roof pitch to be accommodated with tapered insulation to insure a positive pitch to all roof drains.

3.2 PREPARATION – WOOD DECK

A. Verify that wood decking is flat and has tight joints.

B. Verify that the wood decking is dry, not rotten or deteriorated and is structurally sound.

C. As needed, replace damaged, deteriorated, rotten and/or decking with bacterial growth with wood decking of like kind.

3.3 GENERAL INSTALLATION REQUIREMENTS

A. Cooperate with manufacturer, inspection and test agencies engaged or required to perform services in connection with installing the roof system.

B. Insurance/Code Compliance: Where required by code, install and test the roofing system to comply with governing regulation and specified insurance requirements.

C. Protect other work from spillage of roofing materials and prevent materials from entering or clogging drains and conductors. Replace or restore other work damaged by installation of the modified bituminous roofing system.

D. Coordinate installation of roofing system components so that base sheet, insulation and recovery board are not exposed to precipitation or left exposed overnight. Provide cut-offs at end of each day’s work to cover exposed insulation/recovery board with two (2) plies of the specified base flashing ply set in the solvent-free mastic. Remove cut-offs immediately before resuming work.

E. Substrate Joint Penetrations: Prevent bitumen from penetrating substrate joints and through-deck openings, entering building, or damaging roofing system components or adjacent building construction. Install protection at vulnerable locations.

F. Apply roofing materials as specified by manufacturer’s instructions.

1. Keep roofing materials dry before and during application.

2. Begin and apply only as much roofing in one day as can be completed that same day.

G. Cut-Offs/Envelope Waterstops: At end of each day’s roofing installation, protect exposed edge of incomplete work, including roof ply membranes and insulation. Provide temporary covering of an approved coated base sheet. Install waterstop/temporary flashing a minimum of 6 inches under face edge of insulation and wrapped up face and back a minimum of 6 inches from the face in the solvent-free mastic at ¾ pounds per foot, top dress waterstop with asphalt mastic.

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3.7 INSULATION INSTALLATION

A. Refer to Roof Insulation Specification Division 7 Section 07 22 for complete installation requirements.

B. Deck Type: Wood

C. Insulation: Wood fiber board

D. Insulation Attachment Wood Decks: Mechanically attach the board to the roof deck in accordance with the project specifications to meet the wind uplift requirements.

3.8 BASE ROOFING PLY INSTALLATION

A. SBS Polymer Modified Membrane Base Ply: Install one (1) reinforced modified base ply membrane in 25 lbs. per ply per one hundred (100) square feet of the specified hot-applied membrane adhesive, shingled uniformly over the prepared substrate. Shingle in proper direction to shed water on each area of roofing. Prior to installation, cut sheets into 18’ lengths and allow to relax.

B. The roll must push a puddle of adhesive in front of it with adhesive slightly visible at all side laps. Care should be taken to eliminate air entrapment under the membrane.

C. Lap base ply sheet sides four (4) inches, and ends eight (8) inches. Stagger end laps twelve inches minimum.

D. For best results, immediately after installing the specified hot applied adhesive, lay the base roof into the adhesive.

E. Broom, squeegee and/or roll base roofing ply into the adhesive to ensure all air pockets are removed.

F. Extend membrane to the top edge of all cants in full applications of the hot asphalt. Seal top of membrane with the specified cold applied adhesive until modified membrane flashing ply is installed.

G. Install base flashing ply to all perimeter and projection details. Adhere the base flashing ply with the specified hot-applied flashing adhesive noted in this specification. The base flashing ply shall extend a minimum of eight (8) inches above the finished roof surface.

3.9 THERMOPLASTIC MEMBRANE INSTALLATION

A. Install specified Thermoplastic Cap Roofing Ply as described below.

THERMOPLASTIC/MODIFIED BITUMINOUS MEMBRANE HYBRID ROOF SYSTEM 07 55 10 - 18

B. Prior to installing the thermoplastic cap roofing ply, the contractor…