Pipestem Resort State Park Roof Bid Package

June 13, 2023

Table of Contents

Roof Overview & Details.pdf

Pipestem Roof Specification.pdf

Roof Measurements and Overview.pdf

Site Map West Virginia DNR

Pipestem McKeever Lodge Conference Center

P ip e s te m M c K e e v e r L o d g e

N o t to s c a le c o n tr a c to r re s p o n s ib le f o r fi ld m a s u re m e n ts

Core Cut Data

Roof Sections A1 & A2 Core

Cut Data

• Metal Deck

• 5 Inches tapered polyiso

• Ballasted EPDM

A1

A2

Roofing Details West Virginia DNR

Pipestem McKeever Lodge Conference Center

P ip e s te m M c K e e v e r L o d g

N o t to s c a le c o n tr a c to r re s p o n s ib le f o r fi ld m a s u re m e n ts

Section 01010

Summary of Work

Modified Bituminous Membrane Roofing

Roof Deck and Insulation

Pipestem Resort State Park

SECTION 01010

SUMMARY OF WORK

PART 1 - GENERAL

1.1 RELATED DOCUMENTS

A. Attached General Conditions forms

1.2 SUMMARY OF WORK

Roof Sections

A. Remove existing ballast and epdm membrane.

a. Remove all wet insulation that is current and shows on the Infrared Scan.

b. Contractor will be required to scan the roof after all the rock is off the EPDM membrane.

c. Contractor will be required to include 1,000 sq ft of wet insulation in their base bid.

i. Currently there is 5 inches of polyiso insulation over the existing metal deck with additional tapered insulation.

B. Mechanically fasten 1 layer of 0.5 inch rigid poly-iso insulation through the existing insulation and into the metal deck.

C. Install ½:12 minimum sloped crickets/saddles using tapered poly-iso rigid insulation between all drains/scuppers. Create a minimum of 8 ft x 8 ft drain sumps at all scuppers/drains where it can be achieved.

D. Install 1 layer of ½’’ Densdeck Prime in insulation adhesive.

E. Install wood fibrous cant strips at all parapet and curb conditions.

F. Installation of Modified base ply:

a. Cut base ply sheets into 18 foot lengths and allow plies to relax before installing.

Install base sheet in Rubberized, polymer modified cold process coal tar roofing bitumen

b. Lap ply sheet ends 8 inches. Stagger end laps 12 inches minimum.

c. Solidly bond to the substrate and adjacent ply with specified cold adhesive at the rate of 1.5 to 2 gallons per 100 square feet.

d. Install specified base flashing ply to all perimeter and projection details

G. Installation of Modified Cap Ply:

a. Cut cap ply sheets into 18 foot lengths and allow plies to relax before installing.

Shingle sheets uniformly over the prepared substrate to achieve the number of plys specified. Shingle in proper direction to shed water on each large area of roofing.

b. Install subsequent rolls of modified across the roof as above with a minimum of 4 inch side laps and 8 inch staggered end laps. Lay modified membrane in the same direction as the underlayers but the laps shall not coincide with the laps of the base layers.

c. Install specified cap flashing ply to all perimeter and projection details:

d. Run one ply 36 inches and terminate it prior to running additional plies up and over the edge prior to installing the metal coping.

e. Heat weld all seams on the cap sheet.

Modified Bituminous Membrane Roofing

Roof Deck and Insulation

H. Three course the corners of any flashing including inside and outside corners with 2 layers of Silver Flashing and mesh.

I. Flashings to cover any exposed wall or flashing that was previously covered with a membrane. Flashings to go up to the base of any wall panel condition.

J. All flashings to receive a continuous metal termination bar fastened 8 inches on center minimum.

K. 8 inch minimum flashings heights required. If this cannot be achieved then liquid flashing will be required.

L. Install new counterflashing over termination bar with material as listed below for each roof section.

M. All new treated wood blocking/nailers to be installed to replace existing nailers. Prep

(scrape and wire brush) and Paint all gas lines with Rust Go Primer and Rustoleum

Safety Yellow Paint. Replace all drain supports with new OMG Supports.

N. New wood blocking/nailers will need to be installed in certain areas in order to meet the proper required flashing height

O. Paint all drain strainers Red or replace them with new red strainers.

P. All new premanufactured edge metal will be installed around the perimeter.

1.3 INTENT OF THE SPECIFICATIONS

A. The intent of these specifications is to describe the material and methods of construction required for the performance of the work. In general, it is intended that the drawings shall delineate the detailed extent of the work. When there is a discrepancy between drawings, referenced specifications, and standards and this specification, this specification shall govern.

1.4 PROTECTION

A. The contractor shall use every available precaution to provide for the safety of the property owner, visitors to the site, and all connected with the work under the Contract.

B. All existing facilities both above and below ground shall be protected and maintained free of damage. Existing facilities shall remain operating during the period of construction unless otherwise permitted. All access roadways must remain open to traffic unless otherwise permitted.

C. Barricades shall be erected to fence off all construction areas from operations personnel.

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, and local and owner fire and safety requirements.

3. Advise owner whenever work is expected to be hazardous to owner employees and/or operations.

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

Modified Bituminous Membrane Roofing

5. Maintain proper fire extinguisher within easy access whenever power tools, roofing kettles, and torches are being used. A MINIMUM OF A 2 HOUR FIRE

WATCH SHALL BE STRICTLY ADHERED TO WHENEVER PROPANE

TORCHES ARE IN USE.

6. ALL SAFETY REQUIREMENTS OF THE BUILDING OWNER MUST BE

FOLLOWED. NO EXCEPTIONS WILL BE PERMITTED. SAFETY ORIENTATION

MEETING REQUIRED PRIOR TO PERFORMING ANY WORK.

1.5 HOUSEKEEPING

A. Keep materials neat and orderly.

B. Remove scrap, waste and debris from the project area.

C. Maintenance of clean conditions while work is in progress and cleanup when work is completed shall be inn strict accordance with the “General Conditions” of this contract.

D. Fire protection during construction.

E. Follow all requirements established by the building owner.

END OF SECTION

Modified Bituminous Membrane Roofing

SECTION 07550

MODIFIED BITUMINOUS MEMBRANE ROOFING

PART 1 GENERAL

1.1 SECTION INCLUDES

A. Cold Applied 2-Ply Modified Bituminous

B. PREINSTALLATION MEETINGS

1) Preinstallation Conference: Conduct conference at Project site.

1.2 ACTION SUBMITTALS

A. Product Data: For each type of product.

1. For insulation and roof system component fasteners, include copy of FM Approvals'

RoofNav listing.

2. Shop Drawings: Include plans, sections, details, and attachments to other work, including the following:

a. Base flashings and membrane terminations.

b. Flashing details at penetrations.

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

d. Insulation fastening patterns for corner, perimeter, and field-of-roof locations.

B. Wind Uplift Resistance Submittal: For roofing system indicating compliance with wind uplift performance requirements.

1. Design Pressure Calculations: Submit design pressure calculations for the roof area in accordance with ASCE 7 and local Building Code requirements. Include a roof system attachment analysis report, certifying the system's compliance with applicable wind load requirements before Work begins.

1.3 INFORMATIONAL SUBMITTALS

A. Manufacturer Certificates:

1. Performance Requirement Certificate: Signed by roof membrane manufacturer certifying that roofing system complies with requirements specified in "Performance

Requirements" Article.

2. Submit evidence of complying with performance requirements.

3. Special Warranty Certificate: Signed by roof membrane manufacturer, certifying that all materials supplied under this Section are acceptable for special warranty.

4. Product Test Reports: For roof membrane and insulation, tests performed by a qualified testing agency, indicating compliance with specified requirements.

5. Research reports.

6. Field Test Reports:

a. Concrete internal relative humidity test reports.

b. Fastener-pullout test results and manufacturer's revised requirements for fastener patterns.

7. Field quality-control reports.

8. Sample warranties.

1.4 CLOSEOUT SUBMITTALS

1. Maintenance data.

Modified Bituminous Membrane Roofing

Roof Deck and Insulation

2. Certified statement from existing roof membrane manufacturer stating that existing roof warranty has not been affected by Work performed under this Section.

1.5 QUALITY ASSURANCE

1. Installer Qualifications: A qualified firm with 10 years of documented experience, is approved, authorized, or licensed by roofing system manufacturer to install manufacturer's product and that is eligible to receive manufacturer's special warranty.

They shall not have filed for Bankruptcy in the last 10 years.

2. Perform Work in accordance with NRCA Roofing and Waterproofing Manual.

3. Manufacturer Qualifications: Company specializing in manufacturing products specified with documented ISO 9001 certification and minimum of twelve years of documented experience and must not have been in Chapter 11 bankruptcy during the last five years.

4. Installer's Field Supervision: Maintain a full-time Supervisor/Foreman on job site during all phases of roofing work while roofing work is in progress.

5. Product Certification: Provide manufacturer's certification that materials are manufactured in the United States 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.

6. 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. Upon request of the Architect or Owner, submit

Manufacturer's written approval of secondary components in list form, signed by an authorized agent of the Manufacturer.

1.6 WARRANTY

1. Special Warranty: Manufacturer agrees to repair or replace components of roofing system that fail in materials or workmanship within specified warranty period.

2. Upon completion of the work, provide the Manufacturer's written and signed Edge-To-

Edge NDL System Warranty, warranting that, if a leak develops in the roof during the term of this warranty, due either to defective material or defective workmanship by the installer, the manufacturer shall provide the Owner, at the Manufacturer's expense, with the labor and material necessary to return the defective area to a watertight condition including same Manufactuer’s Metal Components.

3. Warranty Period:

a. 30 years from date of acceptance.

1.7 PRODUCTS

A. PERFORMANCE REQUIREMENTS

1. Accelerated Weathering: Roof membrane shall withstand 2000 hours of exposure when tested according to ASTM G 152, ASTM G 154, or ASTM G 155.

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

ASTM D 3746/D 3746M, ASTM D 4272/D 4272M, or the "Resistance to Foot Traffic

Test" in FM Approvals 4470.

3. Wind Uplift Resistance: Design roofing system to resist the following wind uplift pressures when tested according to FM Approvals 4474, UL 580, or UL 1897:

a. Zone 2 (Roof Area Perimeter): 43.4 lbf/sq.

b. Zone 3 (Roof Area Corners): 64.5 lbf/sq.

1.8 MANUFACTURERS

1. Acceptable Manufacturers:

Modified Bituminous Membrane Roofing

Roof Deck and Insulation

a. Garland Company-Basis of Desin

b. Tremco Inc

c. Ecology Inc

2. Source Limitations: Obtain components for roofing system, accessories, metals from roof manufacturer.

1.9 MAIN ROOF SYSEM

A. Base (Ply) Sheet: One ply bonded to the prepared substrate with Interply Adhesive: smooth surfaced, suitable for cold adhesive or hot asphalt application method.

1. 80 mil SBS (Styrene-Butadiene-Styrene) rubber modified roofing base sheet reinforced with a dual fiberglass reinforced scrim, performance requirements according to ASTM

D 5147

B. Modified Cap (Ply) Sheet: One ply bonded to the prepared substrate with Interply Adhesive.

1. 155 mil SBS (Styrene-Butadiene-Styrene) mineral surfaced, rubber modified roofing membrane reinforced with a fiberglass and polyester composite scrim. ASTM D 6162, Type III Grade G. Surfaced with the highly reflective Sunburst white mineral. ASTM

D 6162, Type III Grade G

C. Interply Adhesive: (1 and 2)

1. Rubberized, polymer modified cold process asphalt roofing bitumen V.O.C. compliant

ASTM D 3019. Performance Requirements

D. One ply bonded to the prepared substrate with Interply Adhesive:

D 5147

E. One ply bonded to the prepared substrate with Interply Adhesive:

membrane reinforced with a fiberglass and polyester composite scrim. ASTM D 6162, Type III Grade G. Surfaced with the highly reflective Sunburst white mineral.

1.10 EDGE TREATMENT AND ROOF PENETRATION FLASHINGS

A. Pre-Manufactured Edge Metal: Snap-On Fascia Cover and Splice Plate.

1. Zinc-coated steel, ASTM A653, coating designation G-90, in thickness of 24 gauge, 22 gauge or 20 gauge, 36" to 48" by coil length, chemically treated, commercial or lock-forming quality.

2. Aluminum, ASTM B209, alloy 3105-H14, in thickness of .032" nom. or .040" nom. or

.050" nom. or .063" nom.

Modified Bituminous Membrane Roofing

B. Pre-Manufactured Coping Cap: Coping Cap Cover and Splice Plate.

1. Zinc-coated steel, ASTM A653, coating designation G-90, in thickness of 24 gauge, 22 gauge or 20 gauge, 36" to 48" by coil length, chemically treated, commercial or lock-forming quality.

2. Aluminum, ASTM B209, alloy 3105-H14, in thickness of .040" nom. or .050" nom. or

.063" nom

C. Pre-Manufactured Edge Metal: Snap-On Fascia or Extruded Fascia Continuous Cant

1. Zinc-coated steel, ASTM A653, coating designation G-90, in thickness of 0.0299 nom./22 gauge, 36" to 48" by coil length, chemically treated, commercial or lock-forming quality.

D. Pre-Manufactured Coping Cap: Coping Chairs

1. Zinc-coated steel, ASTM A653, coating designation G-90, in thickness of 0.0635 nom./

16 gauge, 36" to 48" by coil length, chemically treated, commercial or lock-forming quality.

E. Pre-Manufactured Edge Metal Finishes:

1. Exposed and unexposed surfaces for mill finish flashing, fascia, and coping cap, as shipped from the mill

2. Exposed surfaces for coated panels:

a. Steel Finishes: fluorocarbon finish. Epoxy primer baked both sides, .2-.25 mils thickness as approved by finish coat manufacturer.

Weathering finish as referred by National Coil Coaters Association (NCCA).

Provided with the following properties.

a) Pencil Hardness: ASTM D3363, HB-H / NCCA II-2.

b) Bend: ASTM D-4145, O-T / NCCA II-19

c) Cross-Hatch Adhesion: ASTM D3359, no loss of adhesion

d) Gloss (60 deg. angle): ASTM D523, 25+/-5%

e) Reverse Bend: ASTM D2794, no cracking or loss of adhesion

f) Nominal Thickness: ASTM D1005

g) Primer: 0.2 mils

h) Topcoat, 0.7 mils min

i) Clear Coat (optional, only used with 22 ga. steel) 0.3 mils

j) Color: Provide as specified. (Subject to minimum quantities)

F. Flashing Boot - Rubbertite Flashing Boot: Neoprene pipe boot for sealing single or multiple pipe penetrations adhered in approved adhesives as recommended and furnished by the membrane manufacturer.

G. Vents and Breathers: Heavy gauge aluminum and fully insulated vent that allows moisture and air to escape but not enter the roof system as recommended and furnished by the membrane manufacturer.

H. Pitch pans, Rain Collar 24 gauge stainless or 20oz (567gram) copper. All joints should be welded/soldered watertight. See details for design.

I. Drain Flashings should be 4lb (1.8kg) sheet lead formed and rolled.

J. Plumbing stacks should be 4lb (1.8kg) sheet lead formed and rolled.

Modified Bituminous Membrane Roofing

Roof Deck and Insulation

K. Liquid Flashing - Tuff-Flash: An asphaltic-polyurethane, low odor, liquid flashing material designed for specialized details unable to be waterproofed with typical modified membrane flashings.

a. Tensile Strength, ASTM D 412: 400 psi

b. Elongation, ASTM D 412: 300%

c. Density @77 deg. F 8.5 lb/gal typical

L. Fabricated Flashings: Fabricated flashings and trim are specified in Section 07620.

1. Fabricated flashings and trim shall conform to the detail requirements of SMACNA

"Architectural Sheet Metal Manual" and/or the CDA Copper Development

Association "Copper in Architecture - Handbook" as applicable.

a. Manufactured Roof Specialties: Shop fabricated copings, fascia, gravel stops, control joints, expansion joints, joint covers and related flashings and trim are specified in Section 07710.

1) Manufactured roof specialties shall conform to the detail requirements of

SMACNA "Architectural Sheet Metal Manual" and/or the NRCA

"Roofing and Waterproofing Manual" as applicable.

1.11 ACCESSORIES

A. AUXILIARY ROOFING MATERIALS

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

a. Adhesives and Sealants: Comply with VOC limits of authorities having jurisdiction.

b. Interply Adhesive:Polymer modified cold process asphalt roofing bitumen

V.O.C. compliant ASTM D 3019

B. Prefabricated Pipe Flashings: As recommended by roof membrane manufacturer.

1. Metal Termination Bars: Manufacturer's standard, predrilled stainless-steel or aluminum bars, approximately 1 by 1/8 inch thick; with anchors.

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

3. Miscellaneous Accessories: Provide those recommended by roofing system manufacturers.

1.12 EXECUTION

A. EXAMINATION

1. Examine substrates, areas, and conditions, with Installer present, for compliance with requirements and other conditions affecting performance of the Work. Do not begin installation until substrates have been properly prepared.

2. Inspect and approve the deck condition, slopes and fastener backing if applicable, parapet walls, expansion joints, roof drains, stack vents, vent outlets, nailers and surfaces and elements.

3. Verify that work penetrating the roof deck, or which may otherwise affect the roofing, has been properly completed.

Modified Bituminous Membrane Roofing

Roof Deck and Insulation

B. PREPARATION

1. General: Clean surfaces thoroughly prior to installation.

a. Prepare surfaces using the methods recommended by the manufacturer for achieving the best result for the substrate under the project conditions.

b. Fill substrate surface voids that are greater than 1/4 inch wide with an acceptable fill material.

c. Roof surface to receive roofing system shall be smooth, clean, free from loose gravel, dirt and debris, dry and structurally sound.

d. Wherever necessary, all surfaces to receive roofing materials shall be power broom and vacuumed to remove debris and loose matter prior to starting work.

e. Do not apply roofing during inclement weather. Do not apply roofing membrane to damp, frozen, dirty, or dusty surfaces.

f. Fasteners and plates for fastening components mechanically to the substrate shall provide a minimum pull-out capacity of 300 lbs. (136 k) per fastener. Base or ply sheets attached with cap nails require a minimum pullout capacity of 40 lb.

per nail.

g. Prime decks where required, in accordance with requirements and recommendations of the primer and deck manufacturer.

2. Metal Deck: Metal deck shall be installed as specified in Section

a. Fastening of the deck should comply with the anticipated live and dead loads pertaining to the building as well as applicable Code.

b. Steel decks shall be minimum 22-gauge factory galvanized or zinc alloy coated for protection against corrosion.

c. Suitable insulation shall be mechanically attached as recommended by the insulation manufacturer.

d. Decks shall comply with the gauge and span requirements in the current Factory

Mutual FM Approval Guide and be installed in accordance with Loss

Prevention Data Sheet 1-28 or specific FM approval.

e. When re-roofing over steel decks, surface corrosion shall be removed, and repairs to severely corroded areas made. Loose or inadequately secured decking shall be fastened, and irreparable or otherwise defective decking shall be replaced.

1.13 ROOFING INSTALLATION, GENERAL

1. Install modified bitumen membranes and flashings in accordance with manufacturer's instructions and with the recommendations provided by the National Roofing

Contractors Association's Roofing & Waterproofing Manual, the Asphalt Roofing

Manufacturers Association, and applicable codes.

2. General: Avoid installation of modified bitumen membranes at temperatures lower than

40-45 degrees F. When work at such temperatures unavoidable use the following precautions:

a. Take extra care during cold weather installation and when ambient temperatures are affected by wind or humidity, to ensure adequate bonding is achieved between the surfaces to be joined. Use extra care at material seam welds and where adhesion of the applied product to the appropriately prepared substrate as the substrate can be affected by such temperature constraints as well.

b. Unrolling of cold materials, under low ambient conditions must be avoided to prevent the likelihood of unnecessary stress cracking. Rolls must be at least 40 degrees F at the time of application. If the membrane roll becomes stiff or difficult to install, it must be replaced with roll from a heated storage area.

Modified Bituminous Membrane Roofing

Roof Deck and Insulation

3. Commence installation of the roofing system at the lowest point of the roof (or roof area), working up the slope toward the highest point. Lap sheets shingle fashion so as to constantly shed water

4. All slopes greater than 2:12 require back-nailing to prevent slippage of the ply sheets.

Use ring or spiral-shank 1 inch cap nails, or screws and plates at a rate of 1 fastener per ply (including the membrane) at each insulation stop. Place insulation stops at 16 ft o.c. for slopes less than 3:12 and 4 feet o.c. for slopes greater than 3:12. On non-insulated systems, nail each ply directly into the deck at the rate specified above.

When slope exceeds 2:12, install all plies parallel to the slope (strapping) to facilitate backnailing. Install 4 additional fasteners at the upper edge of the membrane when strapping the plies.

1.14 SUBSTRATE BOARD INSTALLATION

1. Install substrate board with long joints in continuous straight lines, with end joints staggered not less than 24 inches in adjacent rows.

a. Tightly butt substrate boards together.

b. Cut substrate board to fit tight around penetrations and projections, and to fit tight to intersecting sloping roof decks.

1.15 ROOFING MEMBRANE INSTALLATION, GENERAL

1. Install roofing system according to roofing system manufacturer's written instructions and applicable recommendations in ARMA/NRCA's "Quality Control Guidelines for the Application of Polymer Modified Bitumen Roofing."

2. Start installation of roofing in presence of roofing system manufacturer's technical personnel.

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

3. Provide tie-offs at end of each day's work to cover exposed roofing sheets and insulation with a course of coated felt set in roofing cement or hot roofing asphalt, with joints and edges sealed.

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

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

1.16 BASE SHEET INSTALLATION

1. Before installing, unroll base sheet, cut into workable lengths, and allow to lie flat for a time period recommended by manufacturer for the ambient temperature.

2. Installation of Base Sheet:

a. Install base sheet according to roofing manufacturer's written instructions, starting at low point of roofing system.

b. Extend roofing sheets over and terminate above cants.

c. Install base sheet in a shingle fashion.

d. Mechanically attach base sheet to roof deck using mechanical fasteners specifically designed and sized for fastening base sheet to wood deck.

Fasten base sheet to resist specified uplift pressure at corners, perimeter, and field of roof. Install base sheet without wrinkles, rears, and free from air pockets.

3. Laps: Accurately align roofing sheets, without stretching, and maintain uniform side and end laps.

a. Lap side laps as recommended by roof membrane manufacturer but not less than

3 inches.

Modified Bituminous Membrane Roofing

Roof Deck and Insulation

b. Lap end laps as recommended by roof membrane manufacturer but not less than

12 inches.

c. Stagger end laps not less than 18 inches.

4. Repair tears and voids in laps and lapped seams not completely sealed.

5. Apply pressure to the body of the base sheet according to manufacturer's instructions, to remove air pockets and to result in complete adhesion of base sheet to substrate.

1.17 INSTALLATION COLD APPLIED ROOF SYSTEM

A. Base Ply: Cut base ply sheets into 18 foot lengths and allow plies to relax before installing.

Install base sheet in Interply Adhesive: applied at the rate required by the manufacturer.

Shingle base sheets uniformly to achieve one ply throughout over the prepared substrate.

Shingle in proper direction to shed water on each large area of roofing.

1. Lap ply sheet ends 8 inches. Stagger end laps 12 inches minimum.

2. Solidly bond to the substrate and adjacent ply with specified cold adhesive at the rate of 2 to 2-1/2 gallons per 100 square feet.

3. Roll must push a puddle of adhesive in front of it with adhesive slightly visible at all side laps. Use care to eliminate air entrapment under the membrane.

4. Install subsequent rolls of modified across the roof as above with a minimum of 4 inch side laps and 8 inch staggered end laps. Lay modified membrane in the same direction as the underlayers but the laps shall not coincide with the laps of the base layers.

5. Extend plies 2 inches beyond top edges of cants at wall and projection bases.

6. Install base flashing ply to all perimeter and projection details.

7. Allow the one ply of base sheet to cure at least 30 minutes before installing the modified membrane. However, the modified membrane must be installed the same day as the base plies.

B. Modified Cap Ply(s): Cut cap ply sheets into 18 foot lengths and allow plies to relax before installing. Install in interplay adhesive applied at the rate required by the manufacturer.

Shingle sheets uniformly over the prepared substrate to achieve the number of plys specified.

Shingle in proper direction to shed water on each large area of roofing.

1. Lap ply sheet ends 8 inches. Stagger end laps 12 inches minimum.

2. Solidly bond to the base layers with specified cold adhesive at the rate of 2 to 2-1/2 gallons per 100 square feet.

3. 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.

4. Install subsequent rolls of modified across the roof as above with a minimum of 4 inch side laps and 8 inch staggered end laps. Lay modified membrane in the same direction as the underlayers but the laps shall not coincide with the laps of the base layers.

5. Allow cold adhesive to set for 5 to 10 minutes before installing the top layer of modified membrane.

6. Extend membrane 2 inches beyond top edge of all cants in full moppings of the cold adhesive as shown on the Drawings.

7. Fibrous Cant Strips: Provide non-combustible perlite or glass fiber cant strips at all wall/curb detail treatments where angle changes are greater than 45 degrees. Cant may be set in approved cold adhesives, hot asphalt or mechanically attached with approved plates and fasteners.

8. Wood Blocking, Nailers and Cant Strips: Provide wood blocking, nailers and cant strips as specified in Section 06114.

Modified Bituminous Membrane Roofing

Roof Deck and Insulation

a. Provide nailers at all roof perimeters and penetrations for fastening membrane flashings and sheet metal components.

b. Wood nailers should match the height of any insulation, providing a smooth and even transition between flashing and insulation areas.

c. Nailer lengths should be spaced with a minimum 1/8 inch gap for expansion and contraction between each length or change of direction.

d. Nailers and flashings should be fastened in accordance with Factory Mutual

"Loss Prevention Data Sheet 1- 49, Perimeter Flashing" and be designed to be capable of resisting a minimum force of 200 lbs/lineal foot in any direction.

C. Metal Work: Provide metal flashings, counter flashings, parapet coping caps and thru-wall flashings as specified in Section 07620 or Section 07710. Install in accordance with the

SMACNA "Architectural Sheet Metal Manual" or the NRCA Roofing Waterproofing manual.

1. Termination Bar: Provide a metal termination bar or approved top edge securement at the terminus of all flashing sheets at walls and curbs. Fasten the bar a minimum of 8 inches (203 mm) o/c to achieve constant compression. Provide suitable, sealant at the top edge if required.

D. Flashing Base Ply: Install flashing sheets by the same application method used for the base ply.

1. Seal curb, wall and parapet flashings with an application of mastic and mesh on a daily basis. Do not permit conditions to exist that will allow moisture to enter behind, around or under the roof or flashing membrane.

2. Prepare all walls, penetrations, expansion joints and where shown on the Drawings to be flashed with required primer at the rate of 100 square feet per gallon. Allow primer to dry tack free.

3. Adhere to the underlying base ply with specified flashing ply adhesive unless otherwise specified. Nail off at a minimum of 8 inches (203 mm) o.c. from the finished roof at all vertical surfaces.

4. Solidly adhere the entire flashing ply to the substrate. Secure the tops of all flashings that are not run up and over curb through termination bar fastened at 6 inches (152 mm)

O.C. and sealed at top.

5. Seal all vertical laps of flashing ply with a three-course application of trowel-grade mastic and fiberglass mesh.

6. Coordinate counter flashing, cap flashings, expansion joints and similar work with modified bitumen roofing work as specified.

7. Coordinate roof accessories, miscellaneous sheet metal accessory items, including piping vents and other devices with the roofing system work.

8. Secure the top edge of the flashing sheet using a termination bar only when the wall surface above is waterproofed, or nailed 4 inches on center and covered with an acceptable counter flashing.

E. Flashing Cap Ply:

1) Seal curb, wall and parapet flashings with an application of mastic and mesh on a daily basis. Do not permit conditions to exist that will allow moisture to enter behind, around or under the roof or flashing membrane.

2) Prepare all walls, penetrations, expansion joints and where shown on the Drawings to be flashed with required primer at the rate of 100 square feet per gallon. Allow primer to dry tack free.

Modified Bituminous Membrane Roofing

Roof Deck and Insulation

3) Adhere to the underlying base flashing ply with specified flashing ply adhesive unless otherwise specified. Nail off at a minimum of 8 inches (203 mm) o.c. from the finished roof at all vertical surfaces.

4) Coordinate counter flashing, cap flashings, expansion joints and similar work with modified bitumen roofing work as specified.

5) Coordinate roof accessories, miscellaneous sheet metal accessory items with the roofing system work.

6) All stripping shall be installed prior to flashing cap sheet installation.

7) Heat and scrape granules when welding or adhering at cut areas and seams to granular surfaces at all flashings.

8) Secure the top edge of the flashing sheet using a termination bar only when the wall surface above is waterproofed, or nailed 4 inches on center and covered with an acceptable counter flashing.

1.18 FLASHING AND STRIPPING INSTALLATION

A. Install base flashing over cant strips and other sloped and vertical surfaces, at roof edges, and at penetrations through roof, and secure to substrates according to roofing system manufacturer's written instructions and as follows:

B. Prime substrates with asphalt primer if required by roofing system manufacturer.

1. Backer Sheet Application:

2. Adhere backer sheet over roofing membrane at cants in cold-applied adhesive.

3. Flashing Sheet Application: Adhere flashing sheet to substrate in cold-applied adhesive at rate required by roofing system manufacturer.

C. Extend base flashing up walls or parapets a minimum of 8 inches above roofing membrane and 4 inches onto field of roofing membrane.

D. Mechanically fasten top of base flashing securely at terminations and perimeter of roofing.

1.19 INSTALLATION EDGE TREATMENT AND ROOF PENETRATION FLASHING

A. Pre-Manufactured Snap-On Metal Edge System:

1. Position base plies of the built-up and/or modified roofing membrane over the roof edge covering nailers completely, fastening 8 inches (203 mm) on center. Install membrane and cap sheet with proper material and procedure according to manufacturer's recommendations.

2. Cant Dam: Install Cant Dam overlapping Cant a minimum of 1 inch. Fasten Cant Dam through the top of nailer and outside face in accordance with ANSI/SPRI ES-1 test report.

3. BUR or Modified Flashing: Prime Cant Dam at a rate of 100 square feet per gallon and allow to dry.

4. Strip in Cant Dam with base flashing membrane extending 6 inches (152 mm) into roof field, followed with a cap sheet extending 9 inches into the roof field. Install membrane and cap sheet with proper material and procedure according to manufacturer's recommendations.

5. Fascia Cover: Install fascia cover with splice plate under one end by pressing downward firmly until "snap" occurs and cover is engaged along entire length of miter. Field cut where necessary with fine tooth saw.

6. Sealant is to be placed between splice plates on metal edge pieces.

Modified Bituminous Membrane Roofing

Roof Deck and Insulation

7. Install a second ply of modified flashing ply in bitumen over the base flashing ply, 9 inches (228 mm) on to the field of the roof.

B. Scupper Through Wall (Overflow):

1. Inspect the nailer to assure proper attachment and configuration.

2. Run one ply over nailer up the overflow, into the scupper hole and up flashing as in typical wall flashing detail. Assure coverage of all wood nailers.

3. Install scupper box in a 1/4 inch (6 mm) bed of mastic. Assure all box seams are soldered and have a minimum 4 inch (101 mm) flange. Make sure all corners are closed and soldered. Prime scupper at a rate of 100 square feet per gallon and allow to dry.

4. Fasten flange of scupper box every 3 inches (76 mm) o.c. staggered.

5. Strip in flange scupper box with base flashing ply covering entire area with 6 inch (152

mm) overlap on to the field of the roof and wall flashing.

6. Install a second ply of modified flashing ply in bitumen over the base flashing ply, 9 inches (228 mm) on to the field of the roof. Apply a three-course application of mastic and mesh at all seams.

C. Pre-manufactured Snap-On Coping Cap:

1. Install miters first.

2. Position base flashing of the Built-Up and/or Modified Roofing membrane over the wall edge covering nailers completely, fastening 8 inches on center. Install membrane and cap sheet with proper material and procedure according to manufacturer's recommendations.

3. Install minimum 16 gauge, 16 inch long by specified width anchor chair at [Contact

Garland Representative] feet on center.

4. Install 6 inch wide splice plate by centering over 16 inch long by specified width anchor chair. Apply two beads of sealant to either side of the splice plate's center.

Approximately 2 inches from the coping cap joint. Install Coping Cap by hooking outside hem of coping on outside face of anchor chair. Press downward on inside edge of coping until "snap" occurs and hem is engaged on the entire chair.

D. Area Divider:

1. Minimum curb height is 8 inches (203 mm) above finished roof height. Prime vertical curb at a rate of 100 square feet per gallon and allow to dry.

2. Set cant in bitumen. Run all field plies over cant a minimum of 2 inches (50 mm).

3. Install base flashing ply covering curb set in bitumen with 6 inches (152 mm)on to field of the roof.

4. Install a second ply of modified flashing ply in bitumen over the base flashing ply, 9 inches (228 mm) on to the field of the roof. Attach top of membrane to top of curb and nail at 8 inches (203 mm) o.c. Apply a three-course application of mastic and mesh at all vertical seams and allow to cure and aluminize.

5. Install pre-manufactured cover. Fasten sides at 24 inches (609 mm) o.c. with fasteners and neoprene washers through slotted holes. Furnish all joint cover laps with butyl tape between metal covers.

E. Equipment Support:

1. Minimum curb height is 8 inches (203 mm) above finished roof height. Prime vertical at a rate of 100 square feet per gallon and allow to dry.

Modified Bituminous Membrane Roofing

Roof Deck and Insulation

2. Set cant in bitumen. Run all field plies over cant a minimum of 2 inches (50 mm).

3. Install base flashing ply covering curb set in bitumen with 6 inches (152 mm) on to field of the roof.

4. Install a second ply of modified flashing ply in bitumen over the base flashing ply, 9 inches (228 mm) on to the field of the roof. Attach top of membrane to top of curb and nail at 8 inches (203 mm) o.c. Apply a three-course application of mastic and mesh at all vertical seams and allow to cure and aluminize.

5. Install pre-manufactured cover. Fasten sides at 24 inches (609 mm) o.c. with fasteners and neoprene washers. Furnish all joint cover laps with butyl tape between metal covers.

6. Set equipment on neoprene pad and fasten as required by equipment manufacturer.

F. Curb Detail/Air Handling Station:

2. Set cant in bitumen. Run all field plies over cant a minimum of 2 inches (50 mm).

3. Install base flashing ply covering curb set in bitumen with 6 inches (152 mm) on to field of the roof.

4. Install a second ply of modified flashing ply in bitumen over the base flashing ply, 9 inches (228 mm) on to the field of the roof. Apply a three-course application of mastic and mesh at all vertical seams and allow to cure and aluminize.

5. Install pre-manufactured counterflashing with fasteners and neoprene washers or per manufacturer's recommendations.

6. Set equipment on neoprene pad and fasten as required by equipment manufacturer.

G. Exhaust Fan:

2. Set cant in bitumen. Run all plies over cant a minimum of 2 inches (50 mm).

3. Install base flashing ply covering curb with 6 inches (152 mm) on to field of the roof.

4. Install a second ply of modified flashing ply installed over the base flashing ply, 9 inches

(228 mm) on to field of the roof. Attach top of membrane to top of wood curb and nail at 8 inches (203 mm) o.c. Apply a three-course application of mastic and mesh at all vertical seams and allow to cure and aluminize.

5. Install metal exhaust fan over the wood nailers and flashing to act as counterflashing.

Fasten per manufacturer's recommendation.

H. Passive Vent/Air Intake:

2. Set cant in bitumen. Run all plies over cant a minimum of 2 inches (50 mm).

3. Install base flashing ply covering curb with 6 inches (152mm) on to the field of the roof.

4. Install a second ply of modified flashing ply installed over the base flashing ply, 9 inches

(228 mm) on to field of the roof. Attach top of membrane to top of wood curb and nail at 8 inches (203 mm) o.c. Apply a three-course application of mastic and mesh at all vertical seams and allow to cure and aluminize.

5. Install passive vent/air intake over the wood nailers and flashing to act as counterflashing.

Fasten per manufacturer's recommendations.

Modified Bituminous Membrane Roofing

I. Roof Drain:

1. Plug drain to prevent debris from entering plumbing.

2. Taper insulation to drain minimum of 24 inches (609 mm) from center of drain.

3. Run roof system plies over drain. Cut out plies inside drain bowl.

4. Set lead/copper flashing (30 inch square minimum) in 1/4 inch bed of mastic. Run lead/copper into drain a minimum of 2 inches (50 mm). Prime lead/copper at a rate of

100 square feet per gallon and allow to dry.

5. Install base flashing ply (40 inch square minimum) in bitumen.

6. Install modified membrane (48 inch square minimum) in bitumen.

7. Install clamping ring and assure that all plies are under the clamping ring.

8. Remove drain plug and install strainer.

J. Plumbing Stack:

1. Minimum stack height is 12 inches (609 mm).

2. Run roof system over the entire surface of the roof. Seal the base of the stack with elastomeric sealant.

3. Prime flange of new sleeve. Install properly sized sleeves set in 1/4 inch (6 mm) bed of roof cement.

4. Install base flashing ply in bitumen.

5. Install membrane in bitumen.

6. Caulk the intersection of the membrane with elastomeric sealant.

7. Turn sleeve a minimum of 1 inch (25 mm) down inside of stack.

K. Heat Stack:

1. Minimum stack height is 12 inches (609 mm).

2. Run roof system over the entire surface of the roof. Seal the base of the stack with elastomeric sealant.

3. Prime flange of new sleeve. Install properly sized sleeves set in 1/4 inch (6 mm) bed of roof cement.

4. Install base flashing ply in bitumen.

5. Install modified membrane in bitumen.

6. Caulk the intersection of the membrane with elastomeric sealant.

7. Install new collar over cape. Weld collar or install stainless steel draw brand.

L. Pitch Pocket:

1. Run all plies up to the penetration.

2. Place the pitch pocket over the penetration and prime all flanges.

3. Strip in flange of pitch pocket with one ply of base flashing ply. Extend 6 inches (152

mm) onto field of roof.

4. Install second layer of modified membrane extending 9 inches (228 mm) onto field of the roof.

5. Fill pitch pocket half full with non-shrink grout. Let this cure and top off with pourable sealant.

6. Caulk joint between roof system and pitch pocket with roof cement.

M. Liquid Flashing:

1. Mask target area on roof membrane with tape.

Modified Bituminous Membrane Roofing

Roof Deck and Insulation

2. Clean all non-porous areas with isopropyl alcohol.

3. Apply 32 wet mil base coat of liquid flashing over masked area.

4. Embed polyester reinforcement fabric into the base coat of the liquid flashing.

5. Apply 48-64 wet mil top coat of the liquid flashing material over the fabric extending 2 inches (51 mm) past the scrim in all directions.

6. Apply minerals immediately or allow the liquid flashing material to cure 15-30 days and then install reflective coating.

1.20 PROTECTING AND CLEANING

A. Clean-up and remove daily from the site all wrappings, empty containers, paper, loose particles and other debris resulting from these operations.

B. Remove asphalt markings from finished surfaces.

C. Repair or replace defaced or disfigured finishes caused by Work of this section.

D. Protect roofing system from damage and wear during remainder of construction period.

1. When remaining construction does not affect or endanger roofing, inspect roofing system for deterioration and damage, describing its nature and extent in a written report, with copies to Architect and Owner.

E. Correct deficiencies in or remove roofing system that does not comply with requirements, repair substrates, and repair or reinstall roofing system to a condition free of damage and deterioration at time of Substantial Completion and according to warranty requirements.

F. Clean overspray and spillage from adjacent construction using cleaning agents and procedures recommended by manufacturer of affected construction.

G. Provide traffic ways, erect barriers, fences, guards, rails, enclosures, chutes and the like to protect personnel, roofs and structures, vehicles and utilities.

H. Protect exposed surfaces of finished walls with tarps to prevent damage.

I. Plywood for traffic ways required for material movement over existing roofs shall be not less than 5/8 inch (16 mm) thick.

J. Special permission shall be obtained from the Manufacturer before any traffic shall be permitted over new roofing.

1.21 FIELD QUALITY CONTROL

A. Field observations shall be performed a minimum of 2 times per week by a

Manufacturer’s Representative employed by the manufacturer and who is to assist, inspect and approve membrane installations for the manufacturer.

1. Warranty shall be issued upon manufacturer's acceptance of the installation.

B. Provide observation reports from the Sales Representative indicating procedures followed, weather conditions and discrepancies found during inspection at least once a week to the architect.

1. Provide a final report from the Manufacturer’s Representative, certifying that the roofing system has been satisfactorily installed according to the project specifications, approved details and good general roofing practice.

Modified Bituminous Membrane Roofing

Roof Deck and Insulation

1.22 SCHEDULES

A. Base (Ply) Sheet:

1. 80 mil SBS (Styrene-Butadiene-Styrene) rubber modified roofing base sheet reinforced with a dual fiberglass reinforced scrim, performance requirements according to ASTM

D 5147.

a. Tensile Strength, ASTM D 5147

1) 2 in/min. @ 73.4 +/- 3.6 deg. F MD 225 lbf/in XD 225 lbf/in

2) 50 mm/min. @ 23 +/- 2 deg. C MD 39.0 kN/m XD 39 kN/m

b. Tear Strength, ASTM D 5147

1) 2 in/min. @ 73.4 +/- 3.6 deg. F MD 300 lbf XD 300 lbf

2) 50 mm/min. @ 23 +/- 2 deg. C MD 1335 N XD 1335 N

c. Elongation at Maximum Tensile, ASTM D 5147

1) 2 in/min. @ 73.4 +/- 3.6 deg. F MD 7% XD 7%

2) 50 mm/min. @ 23 +/- 2 deg. C MD 7% XD 7%

d. Low Temperature Flexibility, ASTM D 5147, Passes -30 deg. F (-34.4 deg. )

B. Thermoplastic/Modified Cap (Ply) Sheet:

membrane reinforced with a fiberglass and polyester composite scrim. ASTM D 6162, Type III Grade G

a. Tensile Strength, ASTM D 5147

1) 2 in/min. @ 73.4 +/- 3.6 deg. F MD 310 lbf/in XD 310 lbf/in

2) 50 mm/min. @ 23 +/- 2 deg. C MD 54.25 kN/m XD 54.25 kN/m

b. Tear Strength, ASTM D 5147

1) 2 in/min. @ 73.4 +/- 3.6 deg. F MD 500 lbf XD 500 lbf

2) 50 mm/min. @ 23 +/- 2 deg. C MD 2224 N XD 2224 N

c. Elongation at Maximum Tensile, ASTM D 5147

1) 2 in/min. @ 73.4 +/- 3.6 deg. F MD 8% XD 8%

a) 50 mm/min. @ 23 +/- 2 deg. C MD 8% XD 8%

b) Low Temperature Flexibility, ASTM D 5147, Passes -30 deg. F (-

34 deg. C)

c) Surfaced with the highly reflective Sunburst white mineral.

C. Interply Adhesive:

1. Rubberized, polymer modified cold process asphalt roofing bitumen V.O.C. compliant

ASTM D 3019. Performance Requirements:

1) Non-Volatile Content ASTM D 4479 78%

2) Density ASTM D1475 9.0 lbs./gal.

3) Viscosity Stormer ASTM D562 900-1100 grams

4) Flash Point ASTM D 93 100 deg. F min. (37 deg. C)

5) Slope: up to 2:12

6) V.O.C. ASTM D 3960 Less than 250 g/l

7) Flash Point ASTM D 93 105 deg. F

8) Slope maximum 1:12

D. Flashing Base Ply:

Modified Bituminous Membrane Roofing

Roof Deck and Insulation

D 5147.

a) Tensile Strength, ASTM D 5147

b) 2 in/min. @ 73.4 +/- 3.6 deg. F MD 225 lbf/in XD 225 lbf/in

c) 50 mm/min. @ 23 +/- 2 deg. C MD 39.0 kN/m XD 39 kN/m

d) Tear Strength, ASTM D 5147

e) 2 in/min. @ 73.4 +/- 3.6 deg. F MD 300 lbf XD 300 lbf

f) 50 mm/min. @ 23 +/- 2 deg. C MD 1335 N XD 1335 N

2) Elongation at Maximum Tensile, ASTM D 5147

a) 2 in/min. @ 73.4 +/- 3.6 deg. F MD 7% XD 7%

b) 50 mm/min. @ 23 +/- 2 deg. C MD 7% XD 7%

3) Low Temperature Flexibility, ASTM D 5147:

a) Passes -30 deg. F (-34.4 deg. C)

E. Flashing Ply Adhesive:

1. Asphalt roofing mastic V.O.C. compliant, ASTM D 4586, Type II trowel grade flashing adhesive.

a. Non-Volatile Content ASTM D 4479 70 min.

b. Density ASTM D 1475 8.3 lbs./gal. (1kg/l)

c. Flash Point ASTM D 93 103 deg. F (39 deg. C)

F. Surfacing Flashing Cap (Ply) Sheet:

membrane reinforced with a fiberglass and polyester composite scrim. ASTM D 6162, Type III Grade G

a. Tensile Strength, ASTM D 5147

1) 2 in/min. @ 73.4 +/- 3.6 deg. F MD 310 lbf/in XD 310 lbf/in

2) 50 mm/min. @ 23 +/- 2 deg. C MD 54.25 kN/m XD 54.25 kN/m

b. Tear Strength, ASTM D 5147

1) 2 in/min. @ 73.4 +/- 3.6 deg. F MD 500 lbf XD 500 lbf

2) 50 mm/min. @ 23 +/- 2 deg. C MD 2224 N XD 2224 N

c. Elongation at Maximum Tensile, ASTM D 5147

1) 2 in/min. @ 73.4 +/- 3.6 deg. F MD 8% XD 8%

1) 50 mm/min. @ 23 +/- 2 deg. C MD 8% XD 8%

2) Low Temperature Flexibility, ASTM D 5147, Passes -30 deg. F (-34 deg. C)

3) Surfaced with the highly reflective Sunburst white mineral.

SECTION 07 22 00

ROOF DECK AND INSULATION

PART 1 – GENERAL

1.1 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, including the Conditions of the Contract and Division 01 Specification Sections apply to this section.

1.2 SUMMARY

A. Section includes roof insulation over the properly prepared deck substrate.

B. Related Sections:

1. Section 07 05 00 – Common Work Procedures for Thermal and Moisture Protection.

2. Section 07 62 00 – Sheet Metal Flashing and Trim.

1.3 REFERENCES

A. American Society for Testing and materials (ASTM):

1. ASTM A167 Standard Specification for Stainless and Heat-Resisting Chromium Nickel

Steel Plate, Sheet and Strip.

2. ASTM A653 Standard Specification for Steel Sheet, Zinc-Coated (Galvanized) or Zinc-

Iron Alloy-Coated (Galvanized) by the Hot-Dip Process.

3. ASTM B29 Standard Specification for Refined Lead.

4. ASTM B32 Standard Specification for Solder Metal.

5. ASTM C165 Standard Test Method for Measuring Compressive Properties of Thermal

Insulation.

6. ASTM C208 Standard Specification for Cellulosic Fiber Insulation Board.

7. ASTM C209 Standard Test Method for Cellulosic Fiber Insulating Board.

8. ASTM C272 Standard Test Method for Water Absorption of Core Materials for

Structural Sandwich Constructions.

9. ASTM C1396 Standard Specification for Gypsum Wallboard.

10. ASTM C518 Standard Test Method for Steady-State Heat Flux Measurements and

Thermal Transmission Properties by Means of the Heat Flow Meter…