FCI_Bennettsville_Roof_Repair_Project_SOW_1.docx

DEPARTMENT OF JUSTICE

FEDERAL BUREAU OF PRISONS

Federal Correctional Institution Bennettsville, SC

PROJECT – REPAIR HOUSING UNIT ROOFS

May 2, 2019

FACILITIES DEPARTMENT

STATEMENT OF WORK

REPAIR HOUSING UNIT ROOFS – PROJECT

FEDERAL CORRECTIONAL INSTITUTION

Bennettsville, South Carolina

1. REQUIREMENT

1.1 OBJECTIVE

The Contractor shall provide to the Federal Bureau of Prisons (FBOP) all necessary labor, equipment and materials and related services for the repair of the housing unit roofs at Federal Correctional Institution, Bennettsville located at 696 Muckerman Road. The contractor will repair and provide the installation of .60 mil. PVC Flex Roofing Systems throughout A, B, C, SH Inmate Housing Units.

1.2 BRAND NAME OR EQUAL

Flex Roofing Systems or equal product will be accepted. Should a quotation be issued by a contractor for equal products, the contractor shall submit all product information/specification for the equal products in the contractor’s bid/proposal. Failure to submit the product information/specifications with your bid/proposal will be considered non-responsive and the contractor’s bid/proposal will not be considered.

1.3 CONTRACTOR RESPONSIBILITIES:

A. Contractor shall be responsible for the procurement and delivery of all equipment, project management, labor, and certifications.

B. Contractor will be certified/authorized by the manufacturer to perform installations/repairs.

C. Contractor shall take all necessary precautions to ensure against all damage to the existing property. Any damaged items shall be repaired or replaced by the Contractor, at no additional cost to the contract, nor the Government.

D. Contractor shall coordinate with the Contracting Officer’s Representative (COR) to coordinate an installation schedule.

E. Contractor shall provide a designated Project Manager (PM) for administration of this project, and an on-site manufacturer/trade certified personnel (eg. Journeyman) while installation is in progress.

F. Contractor will be permitted to wear jeans in the institution, however, green or khaki-color clothing will not be allowed. The clothes will be proper and suitable for the services that are being provided.

G. Lunches will be consumed at the work site. Contractor shall ensure they have everything they need for their lunch when they check-in first thing in the morning.

H. Federal smoking policy on Federal property states that smoking is only allowed in designated areas. This policy will be strictly enforced.

I. The contractor will be responsible for notifying the Facilities Department if any interruption of service.

J. The contractor will be responsible for providing a portable toilet that will be secured and placed at the rear of each housing unit.

1.4 GOVERNMENT RESPONSIBILITIES:

A. The FBOP will provide a secure lay-down area for storage of all equipment and material deliveries from the Contractor. The FBOP does not take any responsibility for the security of such equipment and materials. The Contractor will work thru the COR to address any security issues relating to storage.

1.5 UTILITIES

A. The FBOP will provide electrical service for installation.

1.6 DELIVERY OF MATERIALS

A. All construction materials/equipment required for work on this project is required to be processed by the Contractor and coordinated with the COR for temporary storage.

B. All other construction related deliveries which are directly shipped to the contractor can be received between the hours of 7:30 AM - 1:00 PM, Monday - Friday, excluding federal holidays. At no point will a FBOP staff member receive or sign for a delivery if the contractor or his representative is not present to verify and accept the delivery.

C. Under no circumstances will the FBOP or its staff be responsible for the acceptance of any Contractor or company deliveries.

D. The Contractor shall be responsible to provide for loading and unloading contractor material and equipment. FBOP equipment will not be used.

E. The Contractor shall not use the driveway ramp for the loading, unloading, or storage of any materials or equipment. The contractor will not impede/block the driveway ramp at any time during or after the work shift.

1.7 MATERIALS AND EQUIPMENT

A. All construction material, tools and equipment shall be stored in a designated area mutually agreed upon between the COR and the contractor. All tools will be inventoried prior to entering the institution. At the start of each work day all tools will be inventoried out on a daily tool inventory sheet and at the end of the work day all tools & equipment will be inventoried back in to ensure accurate accountability of all tools at the end of each work day.

1.8 MATERIAL DELIVERY, HANDLING AND STORAGE

A. All products delivered to the job site shall be in the original unopened containers or wrappings bearing all seals and approvals.

B. Handle all materials to prevent damage. Place all materials on pallets and fully protect from moisture.

C. Membrane rolls shall be stored lying down on pallets and fully protected from the weather with clean canvas tarpaulins. Unvented polyethylene tarpaulins are not accepted due to the accumulation of moisture beneath the tarpaulin in certain weather conditions that may affect the ease of membrane weldability.

D. As a general rule all adhesives shall be stored at temperatures between 40º F (5º C) and 80º F (27º C). Read instructions contained on adhesive canister for specific storage instructions.

E. All flammable materials shall be stored in a cool, dry area away from sparks and open flames. Follow precautions outlined on containers or supplied by material manufacturer/supplier.

1.9 SECURITY CLEARANCE/CONTRACTOR BADGES.

A. All contractors/sub-contractors (no exceptions) working on the grounds of FCI Bennettsville will pass a security clearance prior to entry.

B. The contractor will be responsible to provide the necessary information for security clearance on the paperwork for employees to a designated person (COR) that will be the point of contact.

C. In the event a contractor’s employee does not pass the security clearance, it shall be the contractor’s responsibility to submit another employee for security clearance.

D. All security clearances shall be submitted to a designated person (COR), a minimum of ten working days after receiving the packets. Upon receiving a security clearance approval the clearance will be in effect for the term of up to one year, prior to the expiration period ending September 30 of each calendar year.

E. All contractors and sub-contractor employees will provide a check list of all employees on site-each day to the COR, verifying the number of workers on site each day and that all workers are pre-approved to be on the site.

1.10 SITE CONDITIONS

A. Roofing materials may be installed under certain adverse weather conditions but only after consultation with the Manufacturer, as installation time and system integrity may be affected. Never install new roofing material over wet roof decking or insulation. Existing substrate must be completely dry.

B. Only as much of the new roofing as can be made weather tight each day, including all flashing and detail work, shall be installed. All seams shall be heat welded before leaving the job site that day. Heat welds using a manual seam tool is not acceptable due to high failure rate of the welds. Use Manufacturer recommended robotic seaming tools where possible. Limit manual seaming methods only as necessary to complete seams in corners and wall transitions.

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. Should surface moisture occur, the Applicator shall provide the necessary equipment to dry the surface prior to application.

E. All new and temporary construction, including equipment and accessories, shall be secured in such a manner as to preclude wind blow-off and subsequent roof or equipment damage.

F. Uninterrupted waterstops shall be installed at the end of each day's work and shall be completely removed before proceeding with the next day's work. Waterstops shall not emit dangerous or unsafe fumes and shall not remain in contact with the finished roof as the installation progresses. Contaminated membrane shall be replaced at no cost to the Owner.

G. The Applicator is cautioned that certain roofing membranes are incompatible with asphalt, coal tar, heavy oils, roofing cements, creosote and some preservative materials.

H. Arrange work sequence to avoid use of newly constructed roofing as a walking surface or for equipment movement and storage. Where such access is absolutely required, the Applicator shall provide all necessary protection and barriers to segregate the work area and to prevent damage to adjacent areas. A substantial protection layer shall be provided for all new and existing roof areas that receive rooftop traffic during construction.

I. Prior to and during application, all dirt, debris and dust shall be removed from surfaces either by vacuuming, sweeping, blowing with compressed air and/or similar methods.

J. The Applicator shall follow all safety regulations as required by OSHA and any other applicable authority having jurisdiction.

K. All roofing, insulation, flashings and metal work removed during construction shall be immediately taken off site to a legal dumping area authorized to receive such materials. Hazardous materials, such as materials containing asbestos, are to be removed and disposed of in strict accordance with applicable City, State and Federal requirements.

L. All new roofing waste material (i.e., scrap roof membrane, release paper, empty cans of adhesive) shall be immediately removed from the site by the Applicator and properly transported to a legal dumping area authorized to receive such material.

M. The Applicator shall take precautions that storage and/or application of materials and/or equipment does not overload the roof deck or building structure.

N. Flammable adhesives and deck primers shall not be stored and not be used in the vicinity of open flames, sparks and excessive heat.

O. All rooftop contamination that is anticipated or that is occurring shall be reported to the Manufacturer to determine the corrective steps to be taken.

P. The Applicator shall verify that all roof drain lines are functioning correctly (not clogged or blocked) before starting work. Applicator shall report any such blockages in writing to the Contract Officer’s Representive and Contracting Officer for corrective action prior to the installation of the roof system.

Q. Applicator shall immediately stop work if any unusual or concealed condition is discovered and shall immediately notify the Contracting Officer of such condition in writing.

R. Site cleanup, including both interior and exterior building areas that have been affected by construction, shall be completed to the Owner's satisfaction.

S. All landscaped areas damaged by construction activities shall be repaired at no cost to the Owner.

T. The Applicator shall conduct fastener pullout tests in accordance with the latest version of the SPRI/ANSI Fastener Pullout Standard to help verify condition of the deck/substrate and to confirm expected pullout values.

U. Precautions shall be taken when using adhesives at or near rooftop vents or air intakes. Adhesive odors could enter the building. Coordinate the operation of vents and air intakes in such a manner as to avoid the intake of adhesive odor while ventilating the building. Keep lids on unused cans at all times.

V. Protective wear shall be worn when using solvents or adhesives as required by job conditions and/or Federal, State and local regulations.

W. Roof membranes are slippery when wet or covered with snow, frost, or ice. Working on surfaces under these conditions is hazardous. Appropriate safety measures must be implemented prior to working on such surfaces. Always follow OSHA and other relevant fall protection standards when working on roofs.

1.11 WORKING CONDITIONS

A. WORK HOURS

a. Working hours at FCI Bennettsville Medium are Monday through Friday, 7:30am to 4:00pm, excluding Federal holidays & Weekends The contractor will be allowed into the building at 8:00 am, and shall be required to exit the building by 3:30 pm each working day

b. If a specific task requires work to be accomplished outside of normal working hours the contractor shall request approval, in writing, to the Contracting Officers Representative, 48 hours in advance of the work.

B. CONTROLLED ITEMS / FORBIDDEN ITEMS / WORKER DRESS

1. Tools that are allowed inside the secure perimeter of the institution shall be inventoried when entering and exiting the institution

2. No compensation shall be made for extra time required to locate lost/missing tools

3. The following items are forbidden inside the secure perimeter of the institutions without the prior written approval of the Warden or designee:

a. Cellular Telephones

b. Laptop Computers

c. Notebook Computers

d. Two Way Radios

e. iPad / Tablets

f. Cigarettes/tobacco in any form/smoking paraphernalia

4. When entering the secure perimeter of the institution the following dress is not allowed:

a. Khaki shirt/pants/outerwear

b. Camouflage shirt/pants/outerwear

c. Shorts

d. Any apparel that is found to be offensive or in poor taste

e. All clothing shall fit the wearer appropriately

f. The FBOP has the right to refuse entry based on clothing worn

C. CLEARANCE OF PERSONNEL

1. Prior to any personnel entering the institution a NCIC & DOJ form will be completed and sent to the COTR for clearance processing. The clearance process could take up to 10 business days so plan accordingly. Once the clearance process is complete to project manager will be notified if the individual is cleared to enter or denied access.

2. All personnel entering the institution shall follow security guidelines established in HSPD-12, as stated in the solicitation documents.

3. All personnel entering the secure perimeter of the institution shall have a government issued Picture ID.

4. All personnel entering the secure perimeter of the institution shall be required to clear the Metal Detector, or other security device in use, each time they enter the secure perimeter.

5. All items not allowed within the secure perimeter must be removed.

B. TOOLS

1. All tools shall be identified on the Tool Inventory Form and checked upon entry and exit of the secure perimeter.

2. Tools broken inside the secure perimeter shall be inventoried when exiting to ensure all parts of the tool are accounted for.

3. Tools may be stored in a locked job box only with the written permission from the Captain.

4. Tools stored within the secure perimeter in the Job Box shall be inventoried by an escort when the box is opened at the commencement of work, and shall be inventoried at the close of the work day prior to the contractors exiting the secure perimeter. It is highly recommended if a Job Box or other large tool storage bin it utilized, shadow boards be installed to show all tools that are inside the box. This will facilitate entry/exit procedures.

5. Security of the tools used by the contractor shall be the responsibility of the contractor.

C. HYDRAULIC/MECHANICAL LIFTS AND LADDERS

1. Hydraulic/Mechanical lifts may be used with the written permission of the Captain.

2. Lifts may be secured inside the secure perimeter only with the written permission of the Captain.

3. A method to secure the lifts overnight, if authorized, shall be approved by the Captain.

4. Ladders 6 feet or less in height may be used and shall be inventoried in the same manner as other tools.

5. A method to secure the ladders overnight, if authorized, shall be approved by the Captain.

D. ESCORTS

1. The FBOP will provide a minimum of 1 escort during all working hours as indicated above.

2. In the event more escorts will be required for a specific evolution, the contractor shall request the additional escorts in writing to the Contracting Officers Representative 48 hours prior to the anticipated need for the extra escorts.

3. Approval of additional escorts is contingent upon available staff.

E. PROCEDURES DURING AN INSTITUTION EMERGENCY

1. When the institution is experiencing adverse weather conditions (i.e. – fog) contractors will be allowed inside FCI Bennettsville Medium only with the permission of the Captain. Work may be allowed at the out buildings, depending on FBOP staff availability.

2. If an emergency, such as an inmate disturbance or a body alarm, were to occur during working hours, the contractors shall follow the directions of the FBOP escorts. The FBOP escorts will take all necessary actions to ensure the safety/security of the contractors and any tools.

3. If the emergency was to lead to an institution lockdown, all work will cease until a time determined by the Executive Staff.

1.12 ADDITIONAL INFORMATION

A. Restrictions on Contract Workers - The contractor shall not supervise inmates, supervise Bureau of Prisons staff, participate in inmate accountability, requisition, sign for, or pick up supplies, formulate policy or procedures, or attend meetings, staff recalls or staff functions.

B. Inmate Management - The provision of services under this proposed contract will require frequent and unsupervised contact with inmates. The contractor will not be responsible for the management of inmates except to ensure that those inmates involved in activities within the contractor's scope of work shall abide by all rules, in effect, to ensure the safety and well-being of all participants. The contractor will report any infractions of rules and regulations by any inmate to the Facility Manager or the COR.

C. Institution Security - The Contractor agrees to adhere to all regulations prescribed by the institutions in regards to the safety, custody, and conduct of inmates. The Bureau of Prisons requires all non-employees to sign in and out of the institution for security reasons. Contractor will be required to attend a one-time orientation program, consisting of approximately four (4) hours, prior to performing any services under this contact. The date and time for this orientation will be mutually agreed upon by both parties, and reimbursement for attendance will be bid as a specific line item.

D. Method of Performance - The contractor has sole responsibility and discretion for choosing and implementing the manner and method of performing tasks outlined in this Statement of Work as long as the requirements are met in accordance with the policies described above.

The requirement, although not directly supervised, shall be reviewed by institution Facilities staff to ensure contract compliance. The contractor’s performance will be evaluated in accordance with FAR Part 42. Contract monitoring reports will be prepared by the COR and maintained in the contract file.

2. TECHNICAL SPECIFICATIONS

2.1 INTRODUCTION:

The Contractor shall provide to the Federal Bureau of Prisons (FBOP) all necessary labor, equipment, materials and related services for the repair of the housing unit roofs at Federal Correctional Institution, Bennettsville located at 696 Muckerman Road. The contractor will repair and provide the installation of watertight PVC Flex Roofing Systems throughout A, B, C, SH Inmate Housing Units.

2.2 SCOPE OF WORK

A. Demo approximately 6500 square feet of damage PVC roof system to include multiple layers of damaged tapered insulation. Prepare the existing roof substrate for installation of new tapered insulation to match existing detail. Furnish and Install multiple layers of new tapered insulation in affected areas of field membrane to be embedded in new low-rise adhesive per manufacturer’s specifications. Furnish and Install new .60 mil.Flex PVC membrane to be fully adhered using new manufacturers approved bonding adhesive. Repair approximately 1500 square feet of wall membrane in areas of loose/delaminated wall membrane, cut top of wall membrane, pull back existing wall detail, check securement at base of wall, clean wall detail free of contaminants, install new manufacturers counter flashing to termination bar provide secondary water intrusion protection detail. Remove and replace lightning protection in areas of work and provide a UL Letter of Findings Certificate covering the repairs made to the existing system. All work to be completed per current manufacturer’s specifications. The contractor will repair the housing units one at a time. Once a housing unit is complete with a watertight seal, the contractor will be able to begin work on the next housing unit.

2.3 Material

A. Polyvinyl-Chloride (PVC) Roofing (polyester reinforced membrane) Single-Ply Membrane

1. Polyester reinforced, flexible sheets complying with ASTM D 4434, Type III, fabric reinforced. Minimum membrane thickness shall be 60 mils. Certified polymer thickness: Membrane Manufacturer is to certify plus or minus one mil the polymer thickness specified. Certification is to be signed by the quality control manager. ASTM plus or minus tolerance for membrane thickness is too weak and not acceptable.

4. Install an adhered or mechanically fastened roofing system as necessary to meet local building code requirements. This project includes both concrete roof deck systems.

5. Provide other roofing components such as substrate board, cover board, adhesives, fasteners, in accordance with ASTM component standards and manufacturer’s recommendations.

6. Cover board systems, on top of roof insulation, that comply with manufacturer’s recommendations are required.

7. Provide an integral system including terminations, perimeter and base flashing.

8. Provide for building movement including expansion joints as required.

B. Sheet Metal Flashing

C. Insulation

1. Insulation Board

Rigid isocyanurate foam insulation board with black mat, treated glass, or foil facers.

D. Vapor Barrier

1. Polyethylene

a. A minimum 6 mil (0.012 mm) thick polyethylene vapor barrier/air barrier as recommended by the Manufacturer.

2. Felt

a. A non-woven polyester or polypropylene mat cushion layer as necessary when substrates are rough or incompatible with the membrane.

E. Walkway Protection

1. Polyester Walkway

a. A polyester reinforced, 0.096 inch (96 mil/2.4 mm), weldable membrane with surface embossment, for access to all mechanical equipment and around the entire perimeter of the roof unless otherwise noted on the approved drawings.

F. Sealants

1. Polyurethane sealants will be used as necessary.

2. Urethane adhesive for pitch pocket toppings as necessary.

G. Fasteners and Anchors

1. 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 1¼ 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.

H. Wood Materials

1. Wood Nailer

a. 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.

2. Plywood

a. When bonding directly to plywood, a minimum ½ inch (12 mm) CDX © 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 membrane. Plywood shall have a maximum moisture content of 19% by weight on a dry weight basis.

2.4 SUBMITTALS

A. Product Data

1. Written list of all materials for use in this project.

2. Manufacturer’s literature, specifications, recommendations and installation instructions for dishwasher.

D. Installer Certificate: Signed by manufacturer certifying that installer is approved, authorized, or licensed by manufacturer to install specified roofing system.

E. Warranty: Sample copy of manufacturer’s standard warranty stating obligations, remedies, limitations, and exclusions of warranty.

F. Closeout Submittals:

2.4 QUALITY ASSURANCE

A. Installer Qualifications: Installer specializing in Flex roofing installation, and who is approved, authorized, or licensed by the manufacturer to install manufacturer’s product.

B. Identify materials with appropriate markings of applicable testing and inspecting.

C. A flood test will be scheduled and conducted to ensure that all repaired sections of the roof system have a water tight seal. A heavy rain day can be substituted for the flood test.

D. Pre-Construction/Pre-Installation Meeting:

a. Review methods and procedures related to work.

b. Tour representative areas of the institution and inspect and discuss conditions and other preparatory work performed by other trades.

2.5 DELIVERY, STORAGE, AND HANDLING

A. The FBOP is not responsible for receiving deliveries.

2.6 PROJECT CONDITIONS

A. Work will be completed in a timely in accordance with SOW & contract

2.7 WARRANTY

A. Manufacturer’s Warranty

1.Upon successful completion of the work, a Manufacturer’s 20 year No Dollar Limit (NDL) warranty will be issued covering materials and labor.

B. Applicator’s Warranty

1. 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 Roofing Manufacturer.

C. Owner Responsibility

1. The 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.

D. Standard Manufacturer’s Warranty

1. Submit a written warranty, without monetary limitation, signed by manufacturer, agreeing to promptly repair resulting from defects in materials or workmanship for a period of not less than 1 years.

3. PRODUCTS

3.1 PRE-CONSTRUCTION MEETING

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

1. The meeting shall discuss all aspects of the project including but not limited to:

3.2 SUBSTRATE CONDITIONS

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

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

3.3 SUBSTRATE PREPARATION

A. 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 as to eliminate risk of deck overload due to concentrated weight. The Owner’s Representative shall ensure 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 the location.

3.4 SUBSTRATE INSPECTION

A. A dry, clean and smooth substrate shall be prepared to receive the roof system.

B. The Applicator shall inspect the substrate for defects such as excessive roughness, contamination, structural inadequacy, or any other condition that will adversely affect the quality of work.

C. The substrate shall be clean, smooth, dry, free of flaws, sharp edges, loose or foreign material, oil and grease. Roofing shall not start until all defects have been corrected.

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

E. Membrane shall be applied over compatible and accepted substrates only.

3.5 VAPOR BARRIER

A. Interior and/or exterior conditions may create a need for a vapor barrier. The Owner’s Representative and Applicator shall decide whether a vapor barrier is necessary and determine the type and location of a vapor barrier.

3.6 WOOD NAILER INSTALLATION

A. Install continuous wood nailers at the perimeter of the entire roof and around roof projections and penetrations.

B. Nailers shall be anchored to resist a minimum force of 300 pounds per lineal foot (4,500 Newtons/lineal meter) in any direction. Individual nailer lengths shall not be less than 3 feet (0.9 meter) long. Nailer fastener spacing shall be at 12 inches (0.3 m) on center or 16 inches (0.4 m) on center if necessary to match the structural framing. Fasteners shall be staggered 1/3 the nailer width and installed within 6 inches (0.15 m) of each end. Two fasteners shall be installed at ends of nailer lengths. Nailer attachment shall also meet the requirements of the current Factory Mutual Loss Prevention Data Sheet 1-49.

C. Thickness shall be as required to match substrate and/or insulation height to allow a smooth transition.

D. Any existing nailer woodwork which is to remain shall be firmly anchored in place to resist a minimum force of 300 pounds per lineal foot (4,500 Newtons/lineal meter) in any direction and shall be free of rot, excess moisture or deterioration.

3.7 INSULATION INSTALLATION

A. Insulation shall be installed according to insulation manufacturer’s instructions and having a minimum thickness of 1-1/2 inches at roof drains.

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

C. Install tapered insulation (1/8 inch per foot slope) in accordance with insulation manufacturer’s shop drawings. All insulation will slope to drains.

D. Install tapered insulation around drains (minimum thickness shall be 1-1/2 inches) creating a drain sump.

E. Do not install more insulation board than can be covered with roof 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 2-1/2 inches (64 mm). Stagger joints at least 12 inches (0.3 m) between layers.

G. Insulation shall be mechanically fastened to the deck with approved fasteners and plates at a rate according to the insulation manufacturer’s and Factory Mutual’s recommendations for fastening rates and patterns. The quantity and locations of the fasteners and plates shall also cause the insulation boards to rest evenly on the roof deck/substrate so there are no significant and avoidable air spaces between the boards and the substrate.

3.8 MEMBRANE INSTALLATION

A. The surface of the insulation or substrate shall be inspected prior to installation of the roof membrane. The substrate will 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.

B. General

1. Roof membrane is to be attached according to Manufacturer’s and Factory Mutual’s requirements.

2. Membrane overlaps shall be shingled with the flow of water where possible.

3. Fastening devices shall be fastened perpendicular to the direction of the steel deck flutes, wood plank, or pre-cast panel where possible.

C. Perimeter and Corner Areas

Over the properly installed and prepared substrate surface:

1. Roof membrane will extend up the perimeter wall and terminate under the cap flashing where possible. Expect to cover all parapet walls a maximum of 4 feet before termination unless otherwise approved in writing by the Contracting Officer.

2. In all other areas, fasteners are to be installed on top of the membrane and parallel with the entire perimeter edge. The number of perimeter and corner fasteners will be determined by building height and width and other conditions according to Factory Mutual guidelines. Fasteners shall clamp the roof membrane tightly to the substrate and covered to provide water tightness.

3. Perimeter area is defined as the outer boundary of the roof. If the roof is broken into different levels, each roof area shall be treated as an individual roof with its outer boundary being treated as a perimeter.

D. Interior Area

Over the properly installed and prepared substrate surface:

1. Fasteners are to be installed on top of the membrane and perpendicular to the steel deck flutes or wood plank. The spacing and fastening will be determined by building height and width and other conditions according to Factory Mutual’s guidelines. Fasteners shall clamp the roof membrane tightly to the substrate and covered for water tightness.

2. Hot air weld all overlaps according to Manufacturer’s requirements. Seam overlaps shall be welded using an automatic welding machine per Manufacturer’s requirements. Hand welding of seams will not be allowed.

E. Rooftop Penetrations

1. At the base of walls, drains, curbs, vent pipes, or any other roof penetrations, fasteners shall be installed according to the Manufacturer’s requirements and covered for water tightness.

3.9 HOT AIR WELDING

A. General

1. All seams shall be welded per Manufacturer’s requirements. Seam overlaps shall be welded using an automatic welding machine per Manufacturer’s requirements. Hand welding of seams will not be allowed.

2. Hand welding of details shall be per Manufacturer’s requirements.

3. All mechanics intending to use the welding equipment shall have successfully completed a training course provided by the membrane manufacturer prior to welding.

4. All membrane to be welded shall be clean and dry.

B. Hand Welding

1. Hand welded seams shall be completed in two stages, only as necessary and per Manufacturer’s requirements .

a. 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.

b. The nozzle shall be inserted 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 rolled lightly. For straight seams, the 1-1/2 inch (40 mm) wide nozzle id recommended for use. For corners and compound connections, the 3/4 inch (20 mm) wide nozzle is recommended.

C. Machine Welding

1. Machine welded seams are achieved by the use of automatic welding equipment. While using this equipment, all local codes for electric supply, grounding and over current protection shall be followed.

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

D. Quality Control

1. The Applicator shall check all welded seams for continuity using a rounded screwdriver. On-site evaluation of welded seams shall be made daily by the Applicator at locations directed by the Owner’s Representative. One inch (25 mm) wide cross-section samples of welded seams shall be taken at least three times daily. Each test cut shall be patched by the Applicator at no cost to the Owner.

3.10 MEMBRANE FLASHINGS

A. General

1. All flashings shall be installed concurrently with the roof membrane as the job progresses. No temporary flashings shall be allowed without prior written approval of the Owner’s Representative and the Manufacturer. 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.

B. Adhesive for Membrane Flashings

1. Over properly installed and prepared flashing substrate, adhesive shall be applied according to instructions found on the product data sheet. The adhesive shall be applied in smooth, even coats with no gaps, globs or similar inconsistencies. Only an area which can be completely covered in the same day’s operations shall be flashed. The bonded sheet shall be pressed firmly in place with a hand roller.

2. No adhesive shall be applied in seam areas that are to be welded. All panels of membrane shall be applied in the same manner, overlapping the edges of the panels as required by welding techniques.

C. All flashings shall extend a minimum of 8 inches (0.2 m) above roofing level unless otherwise accepted in writing by the Owner’s Representative.

D. All flashing membranes shall be consistently adhered to substrates. All interior and exterior corners and miters shall be cut and hot air welded into place. No bitumen shall be in contact with the roof membrane.

E. All flashing membranes shall be mechanically fastened along the counter-flashed top edge at 6-8 inches (0.15-0.20 m) on center.

F. Flashings shall be terminated according to Manufacturer’s recommended details.

G. All adhered flashings that exceed 30 inches (0.75 m) in height or that of the perimeter fastener spacings shall receive additional securement.

H. All mechanically attached flashings that exceed 18 inches (0.46 m) in height shall receive additional securement.

3.11 METAL FLASHINGS

A. Metal details, fabrication practices and installation methods shall conform to the applicable requirements of Factory Mutual Loss Prevention Data Sheet 1-49 (latest issue) and Sheet Metal and Air Conditioning Contractors National Association, Inc. (SMACNA) - latest issue.

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

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

D. Metal joints shall be watertight.

E. Metal flashings shall be securely fastened into solid wood blocking. Fasteners shall penetrate the wood nailer a minimum of 1 inch (25 mm).

F. Airtight and continuous metal hook strips are required behind metal fascias. Hook strips are to be fastened 12 inches (0.3 m) on center into the wood nailer or masonry wall.

G. Counter flashings shall overlap base flashings at least 4 inches (100 mm).

H. Hook strips shall extend past wood nailers over wall surfaces by 1-1/2 inch (38 mm) minimum and shall be securely sealed from air entry.

3.12 WALKWAY INSTALLATION

A. Polyester Walkway

1. Roofing membrane to receive walkway shall be clean and dry. Place chalk lines on the deck sheet to indicate the location of the walkway. Apply a continuous coat of adhesive to the deck sheet and the back of the walkway in accordance with the Manufacturer’s requirements and press the walkway into place with a weighted roller. Clean the deck membrane in areas to be welded. Hot air weld the entire perimeter of the walkway to the deck sheet. Check all welded areas with a rounded screwdriver. Re-weld any inconsistencies and reinspect for compliance.

2. All walkways will be identified on shop drawings.

3.13 TEMPORARY CUT-OFF

A. All flashings shall be installed concurrently with the roof membrane in order to maintain a watertight condition as 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. 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.

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 Manufacturer’s recommendations 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 prior to demobilization.

B. All Warranties referenced in the Specifications shall have been submitted and have been accepted at time of contract award.

4. EXECUTION

4.1 EXAMINATON

A. The contractor will examine the current location of the roof systems and schedule work according to the SOW & contract.

4.2 PREPARATION & Clean Up

All debris and other waste material resulting from this service contract shall be cleaned up and disposed of by the Contractor off site. Site cleanup shall be completed each time services are rendered and before the Contractor leaves the site. Disposal shall be in accordance with all federal, state, and local regulations and shall depend on the waste’s characteristics.

END OF STATEMENT OF WORK

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