36E77619B0013-0003001.pdf

SECTION 07 54 19

ADHERED

THERMOPLASTIC MEMBRANE ROOFING

PART 1 - GENERAL REQUIREMENTS

1.01 DESCRIPTION

A. Scope

To install an adhered roofing membrane with flashings and other components to comprise a roofing system over a properly prepared concrete deck.

B. Related Work

The work includes but is not necessarily limited to the installation of:

1. Wood Blocking

2. Insulation

3. Coverboard

4. Adhesive

5. Fasteners (If required)

6. Roof Membrane

7. Roof Membrane Flashings

8. Walkways

9. Metal Flashings

10. Sealants

11. Removal of Existing Roofing and Insulation

12. Substrate Preparation

13. Roof Drains

C. Upon successful completion of work the following warranties may be obtained:

1. Manufacturer's Warranty

2. Roofing Contractor Warranty

1.02 QUALITY ASSURANCE

A. This roofing system shall be applied only by a Roofing Contractor authorized by the roofing system

Manufacturer (“Applicator”) prior to the time of bid.

B. Upon completion of the installation and the delivery to the Manufacturer by the Applicator of a certification that all work has been done in strict accordance with the contract specifications and the Manufacturer's requirements, an inspection shall be made by a Technical Representative of the Manufacturer to review the installed roof system.

C. There shall be no deviation made from the Project Specification or the approved shop drawings without prior written approval by the Owner, the Owner’s Representative and the Manufacturer.

D. All work pertaining to the installation of the Manufacturer's membrane and flashings shall only be completed by Applicator's personnel trained and authorized by the Manufacturer in those procedures.

1.03 SUBMITTALS

At the time of bidding, the Applicator shall submit to the Owner (or Representative) the following:

A. Copies of Specification.

B. Samples of each primary component to be used in the roof system and the manufacturer’s current literature for each component.

Roof Replacement: Roofs of Bldgs. 1, 3, and 4 WG (Bill) Hefner VA Medical Center

C. Written approval by the insulation manufacturer (as applicable) for use and performance of the product in the proposed system.

D. Sample copy of The Manufacturer's warranty.

E. Sample copy of Applicator’s warranty.

F. Dimensioned shop drawings which shall include roof plan, details, and manufacturers acceptance.

G. Certifications by manufacturers of roofing and insulating materials that all materials supplied comply with all requirements of the identified ASTM and industry standards or practices.

H. Certification from the Applicator that the system specified meets all identified code and insurance requirements as required by the Specification.

I. Material Safety Data Sheets (MSDS)

1.04 CODE REQUIREMENTS

The applicator shall submit evidence that the proposed roof system meets the requirements of the local building code and has been tested and approved or listed by the following test organizations. These requirements are minimum standards and no roofing work shall commence without written documentation of the system’s compliance, as required in the “Submittals” section of this specification.

A. Factory Mutual Research Corporation (FM) - Norwood, MA (Only if building is FM insured).

1. Class 1-90 B. Underwriters Laboratories, Inc. - Northbrook, IL

1. Class A

1.05 PRODUCT DELIVERY, STORAGE AND HANDLING

A. All products delivered to the job site shall be in the original unopened containers or wrappings bearing all seals and approvals. Handle and store all materials in compliance with manufacturers written instructions.

B. All materials which are determined to be damaged by the Owner’s Representative or the Manufacturer are to be removed from the job site and replaced at no cost to the Owner.

1.06 JOB CONDITIONS

A. Manufacturer's materials may be installed under certain adverse weather conditions but only after consultation with Manufacturer, as installation time and system integrity may be affected.

B. Only as much of the new roofing as can be made weathertight each day, including all flashing and detail work, shall be installed. All seams shall be cleaned and heat welded before leaving the job site that day.

C. All work shall be scheduled and executed without exposing the interior building areas to the effects of inclement weather. The existing building and its contents shall be protected against all risks.

D. All surfaces to receive new insulation, membrane or flashings shall be dry. Consult with membrane manufacturer for acceptable conditions.

1.07 BIDDING REQUIREMENTS

A. Pre-Bid Meeting:

A pre-bid meeting shall be held with the Owner’s Representative and involved trades to discuss all aspects of the project. The Applicator’s field representative or roofing foreman for the work shall be in attendance. Procedures to avoid rooftop damage by other trades shall be determined.

B. Site Visit:

Bidders shall visit the site and carefully examine the areas in question as to conditions which may affect proper execution of the work. All dimensions and quantities shall be determined or verified by the contractor. No claims for extra costs will be allowed because of lack of full knowledge of the existing conditions unless agreed to in advance with the Owner or Owner’s Representative.

1.07 WARRANTIES

A. Manufacturer's System Warranty

Upon successful completion of the work to Manufacturer's satisfaction and receipt of final payment, the Manufacturer's 20 Year System Warranty shall be issued. Warranty shall be no dollar limit and include membrane, insulation, adhesives, fasteners, all accessories including edge metal. All components shall be supplied or approved by membrane manufacturer.

B. Applicator/Roofing Contractor Warranty

The Applicator shall supply the Owner with a separate workmanship warranty. In the event any work related to roofing, flashing, or metal is found to be within the Applicator warranty term, defective or otherwise not in accordance with the Contract Documents, the Applicator shall repair that defect at no cost to the Owner. The Applicator’s warranty obligation shall run directly to the Owner, and a copy shall be sent to the Manufacturer. Warranty Period: Two (2) years from date of Substantial Completion.

C. Owner Responsibility

Owner shall notify both the Manufacturer and the Applicator of any leaks as they occur during the time period when both warranties are in effect.

PART 2 - PRODUCTS

2.01 GENERAL

A. The components of the Manufacturer's Adhered roof system are to be products of the Manufacturer as indicated on the Detail Drawings and specified in the Contract Documents. The components of the Adhered roof system, as indicated on the Detail Drawings, are to be products compatible with the Manufacturer's adhered roof system.

B. Components to be used that are other than those supplied or manufactured by the Manufacturer of the roof system may be submitted for review and acceptance by the Manufacturer of the roof system.

Acceptance of any other product is only for a determination of compatibility with roof system products and not for inclusion in the Manufacturer's warranty. The specifications, installation instructions, limitations, and/or restrictions of the respective manufacturers must be reviewed by the Owner’s Representative for acceptability for the intended use with the Manufacturer's products.

2.02 MEMBRANE

A. Acceptable manufacturers:

1. Sika Sarnafil Inc (Basis of design) G410: PVC membrane with fiberglass reinforcement.

60 mil minimum (1.5 mm) for 20 year warranty

A. Membrane shall conform to ASTM D4434-96 (or latest revision), “Standard for Polyvinyl Chloride Sheet roofing”. Classification: Type II , Grade I. Thickness to be 60 mils minimum and have at least

25 mils of polymer above the scrim.

B. Membrane manufacturer must certify that the formulation have a minimum 10 year track record of successful performance under local conditions. Manufacturer must also certify that they are the original manufacturer of the membrane. Membrane to have a minimum of 10% recycled content.

C. As manufactured, membrane shall conform to the following physical properties:

1. Color to be white and comply with Energy Star requirements:

Reflectivity: ASTM E903. .65 Initial, .50 aged Emissivity: ASTM E408: .9 minimum

2. Membrane thickness to be 60 mil or 72 mil minimum

Parameters ASTM Test Method

Minimum ASTM Requirement

Typical Physical Properties

Reinforcing Material - Fiberglass Overall Thickness, min., inches (mm) D638 0.045 0.060 Tensile Strength, min., psi (MPa) D638 1500 (10.4) 1600 (11.1) Elongation at Break, min. (machine x tranverse) D638 250% / 230% 270% / 250% Seam strength, min. (% of tensile strength) D638 75 80 Retention of Properties After Heat Aging D3045 - - Tensile Strength, min., (% of original) D638 90 95 Elongation, min., (% of original) D751 90 90 Tearing Resistance, min., lbf (N) D1004 10 (45) 14 (63) Low Temperature Bend, -40ºF (-40ºC) D2136 Pass Pass Accelerated Weathering Test (Xenon Arc) D2565 5,000 Hours 10,000 Hours Cracking (7x magnification) - None None Discoloration (by observation) - Negligible Negligible Crazing (7 x magnification) - None None Linear Dimensional Change, max. D1204 0.10 % 0.02% Weight Change After Immersion in Water, max. D570 + 3.0% 2.5% Static Puncture Resistance, 33 lbf (15 kg) D5602 Pass Pass Dynamic Puncture Resistance, 7.3 ft-lbf (10 J) D5635 Pass Pass

*Failure occurs through membrane rupture not seam failure.

2.03 FLASHING MATERIALS

A. Wall/Curb Flashing

1. Fiberglass Reinforced Membrane

A fiberglass reinforced membrane adhered to approved substrate using the manufacturer's approved adhesive. Consult the Manufacturer's Product Data Sheets for adhesive options and additional information. Use asphalt resistant membrane where required by manufacturer.

2. PVC-coated Sheet Metal

A PVC-coated, heat-weldable sheet metal capable of being formed into a variety of shapes and profiles. Sheet Metal shall be a 25 gauge, G90 galvanized metal sheet with a 20 mil (1 mm) unsupported PVC membrane laminated on one side. Consult the Manufacturer's Product Data Sheet for additional information.

B. Perimeter Edge Flashing

1. PVC-coated Sheet Metal

A PVC-coated, heat-weldable sheet metal capable of being formed into a variety of shapes and profiles. Sheet Metal shall be a 25 gauge, G90 galvanized metal sheet with a 20 mil (1 mm) unsupported PVC membrane laminated on one side. Consult the Manufacturer's Product Data Sheet for additional information.

2. Non-Typical Edge

Project-specific perimeter edge detail reviewed and accepted for one-time use by The Manufacturer's Technical Department. Consult Regional Technical Manager prior to job start for review and consideration for acceptance.

C. Miscellaneous Flashing

1. Prefabricated Expansion Joint Cover

A prefabricated expansion joint cover made from PVC membrane. Expansion Joint Cover is designed for securement to wall or horizontal surfaces to span and accommodate the movement of new and existing expansion gaps from 1 inch to 4-1/2 inches (25 mm to 114 mm) across.

Available in 40 foot (12 m) rolls. Consult the Manufacturer's Product Data Sheet for additional information.

2. Reglet

A heavy-duty, extruded aluminum flashing termination reglet used at walls and large curbs. The reglet shall be is produced from 6063-T5, 0.10 inch - 0.12 inch (2.5 mm - 3.0 mm) thick extruded aluminum. The reglet shall have a 2-1/4 inch (57 mm) deep profile. Use prefabricated mitered inside and outside corners where walls intersect. Consult the Manufacturer's Product Data Sheet for additional information.

3. Prefabricated PVC accessories.

A prefabricated vent pipe flashing, pre-cur circles, corners, etc. made from 0.048 inch (48 mil/1.2

mm) thick PVC, fiberglass reinforced 410 membrane. Consult The Manufacturer's Product Data Sheet for sizes and additional information.

4. PVC-coated Roof Drain Insert

PVC-coated, heavy-duty aluminum roof drain insert that mechanically seals to the drainpipe interior. Insert is made of 0.080 inch (2 mm) thick 6063 aluminum with a urethane seal installed at the end of the drainpipe. The large 14 inch x 14 inch (0.36 m x 0.36 m) drain strainer is also made of 0.080 inch (2 mm) thick aluminum stock. The flange dimensions of the insert are 18 inches x 18 inches (0.46 m x 0.46 m). Consult The Manufacturer's Product Data Sheet for sizes and additional information.

5. Urethane Sealant

A urethane sealant shall be used for pitch pocket topping and flashing applications. The Urethane sealant shall be a one or two component sealant. Consult The Manufacturer's Product Data Sheet for additional information.

2.04 INSULATION/OVERLAYMENT/RECOVER BOARD

A. Insulation

A rigid polyisocyanurate foam insulation Type II, Class 1, Grade 2. Insulation shall be two (2) layers of 2.5” (R-14.4 per layer) or as indicated on drawings. Insulation shall be supplied and warranted by membrane manufacturer Consult manufacturers Product Data Sheet for additional information.

B. Gypsum Cover Board

A siliconized gypsum, fire-tested hardboard with fiberglass-mat facers. Product is provided in a 4 ft x 8 ft or 4 ft x 4 ft board size and in thicknesses of ¼ inch. Product is primed for adhered applications. Consult The Manufacturer's Product Data Sheet for size, thickness and additional information

C. HD Board

A lightweight high density polyisocyanurate hardboard with coated glass facers. The product is provided in a t 4 ft. x 4 ft. or 4 ft. x 8 ft. board size and a thickness of ½”. Consult The Manufacturer's Product Data Sheet for size, thickness and additional information

2.05 ATTACHMENT COMPONENTS

A. Membrane Adhesive

1. 2121 Adhesive:

A water-based adhesive used to attach the membrane to the horizontal or near-horizontal substrate. Consult Product Data Sheets for additional information. Application rates are as follows:

Substrate Rate 1 gallons/100 ft² Substrate Rate 2 gallons/100 ft² Total Rate gallons/100 ft² (liters/meter²)

Plywood 1.00 + 0 = 1.00 (0.41) Concrete 1.25 + 0 = 1.25 (0.41) Cellular concrete 1.00 + 0 = 1.00 (0.41) Dens-Deck® 1.25 + 0 = 1.25 (0.41) Smooth Bitumen 1.00 + 0 = 1.00 (0.41)

2. 2170 Adhesive

A solvent based adhesive used for membrane attachment to substrates at temperatures below 40 degrees F and also on vertical applications. Also used as a contact adhesive for adhering flashings to substrates. Consult the Manufacturer’s Product Data Sheet for additional information.

B. Insulation/Coverboard Adhesive

A two component foamable polyurethane board adhesive that is applied in one step and sets up in minutes. Dispensed using 1.5 L ( 0.4 gal.) dual cartridges or gal kits. No temperature limitations.

C. Fastener Plate

Fastener Plate is used with various fasteners to attach insulation boards to the roof deck. Plate is a 3 inch (75 mm) square, 26 gauge stamping of SAE 1010 steel with an AZ 55 Galvalume coating. Consult The Manufacturer's Product Data Sheet for additional information.

D. Securement Bar

An FM-approved, heavy-duty, 14 gauge, galvanized or stainless, roll-formed steel bar used to attach membrane to the roof deck. The formed steel is pre-punched with holes every 1 inch (25 mm) on center to allow various fastener spacing options. Consult The Manufacturer's Product Data Sheet for additional information.

E. Fasteners

Corrosion-resistant fasteners used with plates to attach insulation boards to substrate. Fasteners to be supplied or approved by membrane manufacturer for the specific substrate.

F. Peelstop

An extruded aluminum, low-profile bar used with certain fasteners to attach to the roof deck or to walls/curbs at terminations, penetrations and at incline changes of the substrate. Peelstop is a 1 inch (25

mm) wide, flat aluminum bar 1/8 inch (3 mm) thick that has predrilled holes every 6 inches (152 mm) on center. Consult The Manufacturer's Product Data Sheet for additional information.

2.06 WALKWAY PROTECTION

A. PVC Walktred

A polyester reinforced, 0.096 inch (96 mil/2.4 mm), weldable membrane with surface embossment. Used as a protection layer from rooftop traffic. Walktred is supplied in rolls of 39.3 inches (1.0 m) wide and 32.8 feet (10 m) long. Consult The Manufacturer's Product Data Sheet for additional information. Walktred to be included in manufacturers system warranty.

2.07 MISCELLANEOUS ACCESSORIES

A. Aluminum Tape

A 2 inch (50 mm) wide pressure-sensitive aluminum tape used as a separation layer between small areas of asphalt contamination and the membrane and as a bond-breaker under the coverstrip at PVC clad joints.

B. Automatic Welder 661mc

220 volt, self-propelled, hot-air welding machine used to seal long lengths of PVC membrane seams.

C. Cleaning Solvent

A high quality solvent cleaner used for the general cleaning of residual asphalt, scuff marks, etc., from the membrane surface. Solvent is also used daily to clean seam areas prior to hot-air welding in tear off or dirty conditions or if the membrane is not welded the same day it is unrolled. Consult The Manufacturer's Product Data Sheet for additional information.

2.08 SEALANTS AND PITCH POCKET FILLERS

A. Manufacturer Approved Multi-Purpose Sealant (for termination details).

B. Manufacturer approved two-part urethane filler for pitch pocket toppings.

2.09 MISCELLANEOUS FASTENERS AND ANCHORS

A. All fasteners, anchors, nails, straps, bars, etc. shall be post-galvanized steel, aluminum or stainless steel.

Mixing metal types and methods of contact shall be assembled in such a manner as to avoid galvanic corrosion. Fasteners for attachment of metal to masonry shall be expansion type fasteners with stainless steel pins. All concrete fasteners and anchors shall have a minimum embedment of 1-1/4 inch (32 mm) and shall be approved for such use by the fastener manufacturer. All miscellaneous wood fasteners and anchors used for flashings shall have a minimum embedment of 1 inch (25 mm) and shall be approved for such use by the fastener manufacturer.

2.10 RELATED MATERIALS

A. Wood Nailer

Treated wood nailers shall be installed at the perimeter of the entire roof and around such other roof projections and penetrations as specified on Project Drawings. Thickness of nailers must match the insulation thickness to achieve a smooth transition. Wood nailers shall be treated for fire and rot resistance (wolmanized or osmose treated) and be #2 quality or better lumber. Creosote or asphalt-treated wood is not acceptable. Wood nailers shall conform to Factory Mutual Loss Prevention Data Sheet 1-49. All wood shall have a maximum moisture content of 19% by weight on a dry-weight basis.

B. Plywood

When bonding directly to plywood, a minimum ½ inch (12 mm) CDX (C side out), smooth-surfaced exterior grade plywood with exterior grade glue shall be used. Rough-surfaced plywood or high fastener heads will require the use of felt behind the flashing membrane. Plywood shall have a maximum moisture content of 19% by weight on a dry weight basis.

PART 3 - EXECUTION

3.01 PRE-CONSTRUCTION CONFERENCE

A. The Applicator, Owner’s Representative/Designer and Manufacturer(s) shall attend a pre-construction conference.

B. The meeting shall discuss all aspects of the project including but not limited to safety, set up, schedules, contract conditions, coordination of work.

3.02 SUBSTRATE CONDITION

A. Applicator shall be responsible for acceptance or provision of proper substrate to receive new roofing materials.

B. Applicator shall verify that the work done under related sections meets the following conditions:

1. Roof drains and/or scuppers have been reconditioned and/or replaced and installed properly.

2. Roof curbs, nailers, equipment supports, vents and other roof penetrations are properly secured and prepared to receive new roofing materials.

3. All surfaces are smooth and free of dirt, debris and incompatible materials.

4. All roof surfaces shall be free of water, ice and snow.

3.03 SUBSTRATE PREPARATION

The roof deck and existing roof construction must be structurally sound to provide support for the new roof system. The Applicator shall load materials on the rooftop in such a manner to eliminate risk of deck overload due to concentrated weight. The Owner’s Representative shall ensure that the roof deck is secured to the structural framing according to local building code and in such a manner as to resist all anticipated wind loads in that location.

3.04 SUBSTRATE INSPECTION

A. A dry, clean and smooth substrate shall be prepared to receive the The Manufacturer's Adhered roof system. Substrate to be approved by membrane manufacturer prior to construction.

3.05 WOOD NAILER INSTALLATION

A. Install continuous wood nailers at the perimeter of the entire roof and around roof projections and penetrations as shown on the Detail Drawings. Nailers shall be able to handle a force of 300 lbs. per linear foot. Thickness shall be to match substrate or allow a smooth transition.

3.06 INSULATION INSTALLATION

General Criteria

A. Insulation shall be installed according to insulation manufacturer’s instructions.

B. Insulation shall be neatly cut to fit around penetrations and projections.

C. Install tapered insulation in accordance with insulation manufacturer’s shop drawings.

D. Install tapered insulation around drains creating a drain sump.

E. Do not install more insulation board than can be covered with The Manufacturer's membrane by the end of the day or the onset of inclement weather.

F. Use at least 2 layers of insulation when the total insulation thickness exceeds 2.5 inches (64 mm). Stagger joints at least 12 inches (0.3 m) between layers.

3.07 INSTALLATION OF THE PVC MEMBRANE

The surface of the insulation or substrate shall be inspected prior to installation of the The Manufacturer's roof membrane. The substrate shall be clean, dry, free from debris and smooth with no surface roughness or contamination. Broken, delaminated, wet or damaged insulation boards shall be removed and replaced. Install membrane in accordance with manufacturers printed instructions.

3.08 HOT-AIR WELDING OF SEAM OVERLAPS

A. General

1. All seams shall be hot-air welded. Seam overlaps should be 3 inches (75 mm) wide when automatic machine-welding and 4 inches (100 mm) wide when hand-welding, except for certain details. All membrane to be welded shall be clean and dry.

2. Welding equipment shall be provided by or approved by The Manufacturer's. All mechanics intending to use the equipment shall have successfully completed a training course provided by The Manufacturer's Technical Representative prior to welding.

B. Hand-Welding

Hand-welded seams shall be completed in two stages. Hot-air welding equipment shall be allowed to warm up for at least one minute prior to welding.

1. The back edge of the seam shall be welded with a narrow but continuous weld to prevent loss of hot air during the final welding.

2. The nozzle shall be inserted into the seam at a 45 degree angle to the edge of the membrane.

Once the proper welding temperature has been reached and the membrane begins to “flow,” the hand roller is positioned perpendicular to the nozzle and pressed lightly. For straight seams, the 1-1/2 inch (40 mm) wide nozzle is recommended for use. For corners and compound connections, the 3/4 inch (20 mm) wide nozzle shall be used.

3. Exercise care when heat welding to avoid melting the felt on the back of the membrane.

C. Machine Welding

1. Machine welded seams are achieved by the use of The Manufacturer's automatic welding equipment. When using this equipment, The Manufacturer's instructions shall be followed and local codes for electric supply, grounding and over current protection observed. Dedicated circuit house power or a dedicated portable generator is recommended. No other equipment shall be operated off the generator.

2. Metal tracks may be used over the deck membrane and under the machine welder to minimize or eliminate wrinkles.

D. Quality Control of Welded Seams

1. The Applicator shall check all welded seams for continuity using a rounded screwdriver. Visible evidence that welding is proceeding correctly is smoke during the welding operation, shiny membrane surfaces, and an uninterrupted flow of dark grey material from the underside of the top membrane. On-site evaluation of welded seams shall be made daily by the Applicator to locations as directed by the Owner’s Representative or The Manufacturer's representative. One inch (25

mm) wide cross-section samples of welded seams shall be taken at least three times a day.

Correct welds display failure from shearing of the membrane prior to separation of the weld. Each test cut shall be patched by the Applicator at no extra cost to the Owner.

3.09 MEMBRANE FLASHINGS

All flashings shall be installed concurrently with the roof membrane as the job progresses. No temporary flashings shall be allowed without the prior written approval of the Owner’s Representative and The Manufacturer's. Approval shall only be for specific locations on specific dates. If any water is allowed to enter under the newly completed roofing, the affected area shall be removed and replaced at the Applicator’s expense. Flashing shall be adhered to compatible, dry, smooth, and solvent-resistant surfaces. Use caution to ensure adhesive fumes are not drawn into the building. Adhere all flashings with approved adhesive and terminate with specified mechanical termination.

B. All flashings shall extend a minimum of 8 inches (0.2 m) above roof membrane or as approved by membrane manufacturer.

C. All flashings that exceed 30 inches (0.75 m) in height shall receive additional securement. Consult The

Manufacturer's Technical Department for securement methods.

3.10 PVC CLAD METAL BASE FLASHINGS/EDGE METAL

All flashings shall be installed concurrently with the roof membrane as the job progresses. No temporary flashings shall be allowed without the prior written approval of the Owner’s Representative and The Manufacturer's. Acceptance shall only be for specific locations on specific dates. If any water is allowed to enter under the newly completed roofing due to incomplete flashings, the affected area shall be removed and replaced at the Applicator’s expense PVC clad metal flashings shall be formed and installed per the Detail Drawings.

3.11 METAL FLASHINGS

A. Metal details, fabrication practices and installation methods shall conform to the applicable requirements of the following:

1. Sheet Metal and Air Conditioning Contractors National Association, Inc. (SMACNA) - latest issue.

B. Metal, other than that provided by The Manufacturer, is not covered under the The Manufacturer's warranty.

C. Complete all metal work in conjunction with roofing and flashings so that a watertight condition exists daily.

D. Metal shall be installed to provide adequate resistance to bending to allow for normal thermal expansion and contraction and be watertight.

E. Counter flashings shall overlap base flashings at least 4 inches.

3.12 WALKWAY INSTALLATION

A. PVC tred walkway or sand Coated Walkway: Install per manufacturers printed instructions.

3.13 COMPLETION

A. Prior to demobilization from the site, the work shall be reviewed by the Owner’s Representative and the

Applicator. All defects noted and non-compliances with the Specifications or the recommendations of The Manufacturer shall be itemized in a punch list. These items must be corrected immediately by the Applicator to the satisfaction of the Owner’s Representative and The Manufacturer's prior to demobilization.

B. All Warranties referenced in this Specification shall have been submitted and have been accepted at time of contract.

3.14 TEMPORARY CUT-OFF

A. All flashings shall be installed concurrently with the roof membrane in order to maintain a watertight condition as the work progresses. All temporary waterstops shall be constructed to provide a 100% watertight seal. The stagger of the insulation joints shall be made even by installing partial panels of insulation. The new membrane shall be carried into the waterstop. The waterstop shall be sealed to the deck and/or substrate so that water will not be allowed to travel under the new or existing roofing. The edge of the membrane shall be sealed in a continuous heavy application of sealant as described in Section 2.09. When work resumes, the contaminated membrane shall be cut out. All sealant, contaminated membrane, insulation fillers, etc. shall be removed from the work area and properly disposed of off site. None of these materials shall be used in the new work.

B. If inclement weather occurs while a temporary waterstop is in place, the Applicator shall provide the labor necessary to monitor the situation to maintain a watertight condition.

C. If any water is allowed to enter under the newly-completed roofing, the affected area shall be removed and replaced at the Applicator's expense.