Atch_1_-_2_Paraloft_Roof_Specs.pdf

Specification List

Title Specification Number Pages Summary of Work 010100 3

Definition of Bid Items 010101 2 Mobilization 012910 1 Submittals 013000 4 Sheathing 061600 2

Thermoplastic Polyolefin (TPO) Roofing

075423 7

Sheet Metal Flashing & Trim 076200 3 Painting 099113 3

USDA FOREST SERVICE PROJECT SPECIFICATIONS

08/2016 Paraloft Roof Replacement 010100 - Page 1 of 3 Summary Of Work

SECTION 01 01 00

SUMMARY OF WORK

1. PART 1 - GENERAL

1.01 DESCRIPTION OF WORK

A. The project includes replacing the Paraloft building’s existing membrane roofing with new TPO membrane roofing. This work includes: removing the existing roofing materials down to the roof deck/sheathing, installing new TPO membrane roofing system, flashing, and appurtenances.

B. Additional work may be added to the contract, by the Contracting Officer (C.O.), by awarding Optional Items, such as, for replacing damaged roof sheathing.

C. All demolition and construction activities shall be done in compliance with Oregon Occupational Safety and Health Administration guidelines.

1.02

1.03 LOCATION

A. Redmond Air Center (RAC)

RAC Address:

1740 SE Ochoco Way Redmond, OR 97756

A. Access to the Paraloft building is restricted. The Contractor must check in and out at the Forest Service Administrative Building each day before and after each work shift.

1.04 AIRPORT SECURITY

A. Redmond Air Center is part of the Roberts Field-Redmond Municipal Airport.

B. During the course of the contract, the Contractor shall be responsible for maintaining security against unauthorized access to the airport. The Contractor will be held responsible for any fines, damages, or civil penalties filed against the City of Redmond and the Redmond Municipal Airport for the Contractor's failure to maintain the regulations set forth herein.

C. The Contractor shall be fully responsible for compliance of all employees with the airport security program and following regulations and orders of the airport management.

These regulations may affect identification of employees, movement around the airport, parking, entry, and other circumstances affecting the safety or protection of persons or property.

D. For the purpose and intent of these regulations, air operations area is construed to mean any area used or intended to be used for takeoff, landing, or surface maneuvering of aircraft, and all other areas restricted to public access on the field. Work boundaries within the air operations area shall be established as shown on the drawings. Only Contractor's employees are permitted in the work sites.

1. The work boundary includes only the Paraloft building.

2. The Contractor and its employees shall not travel onto the airport ramps.

E. The term “gate” used herein shall mean any controlled, securable opening in the security fence. The contractor must enter and exit the air operations area only through the gates

08/2016 Paraloft Roof Replacement 010100 - Page 2 of 3 Summary Of Work designated by the COR. Deliveries to work sites will be controlled by the contractor. The contractor shall keep the gates locked and secured at all times when not in use.

F. The Contractor shall keep all equipment, vehicles, materials, storage units, stockpiles or any object/item that has the possibility of creating a security breach a minimum of 5 feet away from any portion of the airport security fence/gate system.

1.05 WORK RESTRICTIONS

A. On-Site Work Hours: Work shall be generally performed during normal business working hours of 7:00 a.m. to 5:30 p.m., Monday through Friday. Work outside of normal business hours must be approved in writing by the Contracting Officer.

B. The office buildings will remain open to Forest Service employees and visitors during the progress of on-site work. Specific work areas around the building may be closed off to employees to provide for safe progress of the work. Any activities requiring work area closure to employees for greater than four (4) hours shall be scheduled with the COR at least three (3) days in advance.

1.06 QUALITY ASSURANCE

A. All materials and construction techniques shall meet applicable Local codes or the requirements herein, whichever is stricter.

1.07 USE OF PREMISES

A. Full Government Occupancy: Government will occupy site during entire construction period. Cooperate with the Government during construction operations to minimize conflicts and facilitate Government usage. Perform the Work so as not to interfere with the Government's day-to-day operations. Maintain safe passage for existing building exits and sidewalks.

B. General: Contractor shall have limited use of premises for construction operations, including use of Project site, during construction period. Contractor's use of premises is limited only by The Government's right to perform work or to retain other contractors on portions of Project. Coordinate the project schedule for use of the premises with the CO.

C. Use of Site: Limit use of premises to areas within the Contract limits. Do not disturb portions of Project site beyond areas in which the Work is indicated.

1. Government Occupancy: Allow for Government occupancy of Project site and use by the public.

2. Driveways and Entrances: Keep driveways, loading areas, and entrances serving premises clear and available to the Government, Government's employees, and emergency vehicles at all times. Do not use these areas for parking or storage of materials, unless otherwise allowed, in writing, by the Contracting Officer.

D. Confine operations at site to areas permitted by:

1. Law

2. Ordinances

3. Contract Documents

4. Forest Service Contracting Officer

E. Confine storage of materials to areas as approved by the CO. Do not unreasonably encumber site with materials or equipment.

F. Do not load structure with weight that will endanger structure.

08/2016 Paraloft Roof Replacement 010100 - Page 3 of 3 Summary Of Work

1.08 TEMPORARY UTILITY INSTALLATION

A. General: There are limited Electrical and Water Services on site.

B. Sanitary Facilities: Provide temporary toilet facilities for use of construction personnel.

Comply with requirements of authorities having jurisdiction for type, number, location, operation, and maintenance of fixtures and facilities.

C. Disposal: Provide temporary disposal containers for collection and removal of demolition and construction debris. Do not use the Air Center’s trash containers.

1.09 CONSTRUCTION CONTRACTOR QUALITY CONTROL RESPONSIBILITIES

A. Construction Contractor to provide quality-control services required by project work.

B. Construction Contractor to prepare a schedule of tests, inspections, and similar services required by the Project. Submit schedule to Forest Service with bid proposal for project.

C. The Construction Contractor is responsible for quality control and shall establish and maintain an effective quality control system. The system shall cover all construction and construction related operations, both onsite and offsite. The project superintendent will be held responsible for the quality of work on the job and is subject to removal by the Contracting Officer for non-compliance with quality requirements specified in the contract.

1.10 FINAL CLEANING

A. Complete the following cleaning operations before requesting inspection for Substantial

Completion for Project:

1. Clean Project site, yard, and grounds, in areas disturbed by construction activities, including landscape development areas, of rubbish, waste material, litter, and other foreign substances.

2. Remove tools, equipment, and surplus material from Project site.

3. Clean interior finishes affected by the work to a dirt-free condition, free of stains, films, and similar foreign substances.

4. Leave Project clean and ready for use.

END OF SECTION

08/2016 Paraloft Roof Replacement 010101 - Page 1 of 2 Definition of Bid Items

SECTION 01 01 01

DEFINITION OF BID ITEMS

1. PART 1 - GENERAL

1.01 SUMMARY

A. The intent of this section is to explain, what is and what is not included in a bid item, and the limits or cut-off points where one bid item ends and another begins.

B. The contract price for each item shall constitute full compensation for furnishing all labor, materials, supplies, appurtenances, and incidentals and performing all operations necessary to construct and complete the items in accordance with these specifications and the applicable drawings. Payment for each item shall be considered as full compensation. Work paid for under one item will not be paid for under any other item.

C. The Contractor shall supply and provide all principal equipment, materials, and incidentals and perform all operations necessary to construct and complete the items in accordance with these specifications and the applicable drawings. Contractor work shall include providing site work, demolition, installing materials or appurtenances, supplies, supports, tools, fasteners, mounting hardware and other miscellaneous items, worker safety equipment, labor and incidentals required to accomplish the work as described in the contract to the standards developed by the industry and applicable codes.

D. If no bid item exists for a portion of the work, include the costs in a related bid item.

2. PART 2 - BID ITEMS

BASE BID ITEMS

2.01 ITEM # 1 – MOBILIZATION

A. Mobilization per Specification Section 012000.

B. Measurement shall be made as a Lump Sum quantity for the materials, labor, equipment, tools, and incidentals required to complete this item.

C. Payment shall be made at the contract price for this bid item.

2.02 ITEM # 2 – ROOF SECTION 1

A. Demolition and removal of the existing roof down to the sheathing.

B. Preparation of roof surface for the installation of the new roof.

C. Supply and Install new roofing materials, including, but not limited to, the following: TPO membrane, roof insulation, vapor barriers, insulation, cover boards, flashing, and auxiliary materials for the complete and watertight TPO roofing system.

D. Measurement shall be made as a Lump Sum quantity for the materials, labor, equipment, tools, and incidentals required to complete this item.

E. Payment shall be made at the contract price for this bid item.

2.03 ITEM # 3 – ROOF SECTION 2

A. Demolition and removal of the existing roof down to the sheathing.

B. Preparation of roof surface for the installation of the new roof.

08/2016 Paraloft Roof Replacement 010101 - Page 2 of 2 Definition of Bid Items

C. Supply and Install new roofing materials, including, but not limited to, the following: TPO membrane, roof insulation, vapor barriers, insulation, cover boards, flashing, and auxiliary materials for the complete and watertight TPO roofing system.

D. Measurement shall be made as a Lump Sum quantity for the materials, labor, equipment, tools, and incidentals required to complete this item.

E. Payment shall be made at the contract price for this bid item.

2.04 ITEM # 4 – ROOF SECTION 3

A. Demolition and removal of the existing roof down to the sheathing.

B. Preparation of roof surface for the installation of the new roof.

C. Supply and Install new roofing materials, including, but not limited to, the following: TPO membrane, roof insulation, vapor barriers, insulation, cover boards, flashing, and auxiliary materials for the complete and watertight TPO roofing system.

D. Measurement shall be made as a Lump Sum quantity for the materials, labor, equipment, tools, and incidentals required to complete this item.

E. Payment shall be made at the contract price for this bid item.

2.05 ITEM # 5 – ROOF SECTION 4

A. Demolition and removal of the existing roof down to the sheathing.

B. Preparation of roof surface for the installation of the new roof.

C. Supply and Install new roofing materials, including, but not limited to, the following: TPO membrane, roof insulation, vapor barriers, insulation, cover boards, flashing, and auxiliary materials for the complete and watertight TPO roofing system.

D. Measurement shall be made as a Lump Sum quantity for the materials, labor, equipment, tools, and incidentals required to complete this item.

E. Payment shall be made at the contract price for this bid item.

OPTIONAL BID ITEMS

2.06 OPTION ITEM # 6 – ROOF DECK 2X6 T&G

A. Option Item may be exercised on an as needed basis, per written direction of the CO.

B. Demolition and removal of damaged sections of the existing roof sheathing, and installation of new 2x6 T&G board sheathing, to match existing.

C. Measurement shall be made per Square Foot of sheathing installed.

D. Payment shall be made at the contract price for this bid item.

2.07 OPTION ITEM # 7 – ROOF SHEATHING PLYWOOD

A. Optional Item may be exercised on an as needed basis, per written direction of the CO.

B. Demolition and removal of damaged sections of the existing roof sheathing, and installation of new plywood sheathing, thickness to match existing.

C. Measurement shall be made per Square Foot of sheathing installed.

D. Payment shall be made at the contract price for this bid item.

USDA Forest Service Project Specifications

08/2016 Paraloft Roof Replacement 012910 – Page 1 of 1 Mobilization

SECTION 01 29 10

MOBILIZATION

1. PART 1 - GENERAL

1.01 SUMMARY

A. This work shall consist of preparatory work and operations necessary for the movement of personnel, equipment, supplies, and incidentals to the project site, and for all other work and operations that must be performed or that cause costs to be incurred prior to beginning work on the various items on the project site.

1.02 MEASUREMENT AND PAYMENT

A. The measurement shall be lump sum for mobilization.

B. Payment:

1. When 5 percent or more of the original contract amount is earned from other pay items, 50 percent of the amount for mobilization, or 5 percent of the original contract amount, whichever is less, will be paid.

2. When 10 percent or more of the original contract amount is earned from other pay items, 100 percent of the amount for mobilization, or 10 percent of the original contract amount, whichever is less, will be paid.

3. Upon completion of all work on the project, any unpaid amount for mobilization will be paid.

4. The total of all payments shall not exceed the original contract amount for this item.

2. PART 2 – PRODUCTS (NOT USED)

3. PART 3 – EXECUTION (NOT USED)

END OF SECTION 012910

08/2016 Paraloft Roof Replacement 013000 - Page 1 of 4 Submittals

SECTION 01 30 00

SUBMITTALS

PART 1 - GENERAL

1.01 REQUIREMENTS

A. Provide all submittals within 10 calendar days of contract award unless otherwise required by the specification.

B. It will be the Contractor's responsibility to submit all items with such promptness as to cause no delay in the work.

C. Obtain written approval for the submittals prior to construction, assembly, and delivery.

1.02 SUBMITTALS

A. Submittals shall have sufficient detail to determine if ratings, characteristics, and physical construction are equivalent to those specified.

B. Submit catalog cuts, shop drawings and manufacturer's installation, operating and maintenance instructions for all material and equipment requiring submittals in each specification.

C. Where manufacturer's catalog sheets are used, indicate the specific items to be supplied in ink either by arrow, encircled on the sheet, or the inapplicable portion blocked out.

1. List the following:

a. Specification section and drawing sheet reference number.

b. Identify where equipment is to be used, if not obvious.

c. Manufacturer's name on each catalog sheet.

D. Submittals shall show any changes to be made resulting from substitution of equipment or materials for those that are specified.

E. Shop drawings shall be folded to 8-1/2" x 11" sheet size.

F. Submittals shall include the following unless otherwise required in the specification:

1. Project name and contract number.

2. Names of Contractor, Subcontractor, Supplier, and Manufacturer.

3. Date and revision dates.

4. Specification section number.

5. Field dimensions and relation to adjacent structures.

6. Applicable standards such as ASTM or Federal Specifications.

7. Contractor’s stamp, initial or signature, certifying the review of the submittal, verification of the field measurements, and compliance with the contract documents.

08/2016 Paraloft Roof Replacement 013000 - Page 2 of 4 Submittals

1.03 GOVERNMENT REVIEW

A. After reviewing the submittals, the COR will return one copy of the applicable (marked up) submittal sheets to the Contractor.

B. The reviewed submittal will be marked by the COR in one of three ways, as defined below:

1. APPROVED. Acceptable with no corrections.

2. APPROVED WITH NOTATIONS. The submittal is approved with respect to the corrections or clarifications written on the submittal by the COR.

3. NOT APPROVED. The submittal does not meet the requirements of the contract and is therefore rejected. The COR will identify the reason for the disapproval.

The Contractor shall revise the submittal and resubmit.

1.04 SCHEDULES FOR CONSTRUCTION CONTRACTS

A. The Contractor shall prepare and submit to the Contracting Officer for approval a practicable schedule showing the order in which the Contractor proposes to perform the work, and the dates on which the Contractor contemplates starting and completing the salient features of the work.

B. Contractor shall submit an updated schedule for any changes, or upon request by the

CO.

1.05 SAFETY PLAN CONSTRUCTION CONTRACTS

A. Contractor shall submit a Safety Plan to the Contracting Officer at least 10 days in advance of any construction activities.

1.06 PRODUCT SUBMITTALS

A. The following product submittals are required for this project:

ITEM SPECIFICATION

TIME OF GOVERNMENT REVIEW

AFTER SUBMITTAL IS RECEIVED

Sheathing 061600 5 days

Membrane Roof 075423 5 days

Roof Insulation 075423 5 days

Cover Board 075423 5 days

Substrate Board 075423 5 days

Base Felt 075423 5 days

08/2016 Paraloft Roof Replacement 013000 - Page 3 of 4 Submittals

Flashing 076200 5 days

Paint 099113 5 days

1.07 PRODUCT SAMPLES

A. The following product samples are required for this project:

ITEM SPECIFICATION

TIME OF GOVERNMENT REVIEW

AFTER SUBMITTAL IS RECEIVED

None

1.08 MATERIAL CERTIFICATIONS AND TESTING REPORTS

A. The following shop drawings shall be submitted on this project:

ITEM SPECIFICATION

TIME OF GOVERNMENT REVIEW

TPO Membrane 075423 5 days

1.09 SHOP DRAWINGS

A. The following material certification and/or testing reports shall be submitted on this project:

ITEM SPECIFICATION

TIME OF GOVERNMENT REVIEW

08/2016 Paraloft Roof Replacement 013000 - Page 4 of 4 Submittals

Flashing 076200 5 days

PART 2 - PRODUCTS (NOT USED)

PART 3 - EXECUTION

3.01 Submittals

A. Provide submittals either electronically in PDF format, or hard copy, neatly bound in

3 ring binder.

PART 4 - METHOD OF MEASUREMENT AND PAYMENT (NOT USED)

(End of Specification)

08/2016 Paraloft Roof Replacement 061600 - Page 1 of 2 Sheathing

SECTION 06 16 00

SHEATHING

PART 1 - GENERAL

1.01 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, including General and

Supplementary Conditions and Division 01 Specification Sections, apply to this Section.

1.02 SUMMARY

A. This Section includes the following:

1. Exterior wall and roof sheathing

1.03 DELIVERY, STORAGE, AND HANDLING

A. Stack panels flat with spacers beneath and between each bundle to provide air circulation. Protect sheathing from weather by covering with waterproof sheeting, securely anchored. Provide for air circulation around stacks and under coverings.

2. PART 2 - PRODUCTS

2.01 ROOF SHEATHING

A. Plywood Roof Sheathing: Exterior, Structural I APA rated for roof sheathing.

1. Span Rating: Not less than 16/0.

2. Nominal Thickness: Not less than 1/2 inch. Match sizing needed for flush and smooth transition with existing roof deck.

B. Oriented-Strand-Board Roof Sheathing: Exposure 1, Structural I APA rated for roofing sheathing

1. Manufacturers:

a. Atlas Roofing Corporation

b. Cornell Corporation

c. Dow Chemical Company

d. Johns Manville

e. Rmax

f. Or equal performance

C. 2x6 T&G Boards

1. Tongue and Groove Boards, exterior, structural boards to match and fit with existing roof deck.

08/2016 Paraloft Roof Replacement 061600 - Page 2 of 2 Sheathing

2.02 FASTENERS

A. General: Provide fasteners of size and type indicated that comply with requirements specified in this article for material and manufacturer.

B. Fasteners:

1. For roof sheathing, provide fasteners with hot-dip zinc coating complying with

ASTM A 153/A 153M.

2. Power-Driven Fasteners: CABO NER-272.

C. Adhesives for Field Gluing Panels to Framing: APA AFG-01.

3. PART 3 - EXECUTION

3.01 INSTALLATION, GENERAL

A. Do not use materials with defects that impair quality of sheathing or pieces that are too small to use with minimum number of joints or optimum joint arrangement.

Arrange joints so that pieces do not span between fewer than three support members.

B. Cut panels at penetrations, edges, and other obstructions of work; fit tightly against but not disturbing abutting construction unless otherwise indicated.

C. Securely attach to substrate by fastening as indicated, complying with the following:

1. Table 2304.9.1, "Fastening Schedule," in ICC's "International Building Code."

END OF SECTION 06 16 00

08/2016 Paraloft Roof Replacement 075423 - Page 1 of 7

THERMOPLASTIC POLYOLEFIN (TPO) ROOFING

SECTION 07 54 23

THERMOPLASTIC POLYOLEFIN (TPO) ROOFING

PART 1 - GENERAL

1.1 SECTION REQUIREMENTS

A. General – TPO roofing is to be used for replacing the existing membrane roof on the Paraloft building.

B. Installer Qualifications: A qualified firm that is approved, authorized, or licensed by membrane roofing system manufacturer to install manufacturer's product.

C. Source Limitations: Obtain components including roof insulation, fasteners for membrane roofing system from same manufacturer as membrane roofing.

D. SUBMITTALS

1. Product Data and installation instructions for roofing system.

a. Membrane roof system

2. Shop Drawings and Materials to be used:

a. Step flashing for areas where roof meets exterior wall

b. Boot flashing for all penetrations.

c. Provide detail drawings from the manufacturer for any change in the flat roof such as penetrations, parapet walls, window sills, slope changes, etc., as observed in field inspections. Contractor to demonstrate that manufacturer roofing material as shown in manufacture details will be used on the Contracted roof by labeling the details with the quantity needed and where it will be applied on the roof.

3. ICC-ES Evaluation Reports for components.

4. Warranties: Manufacturer's standard form or customized, without monetary limitation, signed by roofing manufacturer agreeing to repair leaks due to defects in materials or workmanship for period of 20 years.

PART 2 - PRODUCTS

2.1 PERFORMANCE REQUIREMENTS

A. Accelerated Weathering: Roofing system shall withstand 2000 hours of exposure when tested according to ASTM G 152, ASTM G 154, or ASTM G 155.

B. Impact Resistance: Roofing system shall resist impact damage when tested according to ASTM D 3746 or ASTM D 4272.

08/2016 Paraloft Roof Replacement 075423 - Page 2 of 7

C. Solar Reflectance Index: Not less than 78 when calculated according to ASTM E 1980.

D. ENERGY STAR Listing: Roofing system shall be listed on the DOE's ENERGY STAR "Roof Products Qualified Product List" for low-slope roof products.

E. Energy Performance, Aged: Three-year, aged, solar reflectance not less than 0.55 and emissivity not less than 0.75 or, aged Solar Reflectance Index of not less than 64 according to ASTM E 1980.

F. Exterior Fire-Test Exposure: ASTM E 108, Class C.

G. Wind Uplift: The entire roofing system shall be rated to withstand wind uplift for a wind velocity of up to 90 miles per hour or be rated for the Factory Mutual I-90 wind uplift class.

2.2 ROOFING MATERIALS

A. Fabric-Reinforced TPO Sheet: ASTM D 6878, internally fabric- or scrim-reinforced, uniform, and flexible TPO sheet.

1. Thickness (minimum): 60 mils (1.5 mm) nominal.

2. Exposed Face Color: White

B. Attachment System

1. Irrespective of type of attachment system, the roofing membrane shall be adhered over 100 percent of the surface area. The type of single membrane system will have manufacturer's approval for application over decks that can be nailed and/or roofing insulation.

C. Auxiliary Materials: Recommended by roofing system manufacturer for intended use, compatible with membrane roofing, and as follows:

1. Liquid-type auxiliary materials shall comply with VOC limits of Federal Green

Purchasing.

2. Adhesives and sealants that are not on the exterior side of weather barrier shall comply with the following limits for VOC content when calculated according to 40 CFR 59, Subpart D (EPA Method 24):

a. Plastic Foam Adhesives: 50 g/L.

b. Gypsum Board and Panel Adhesives: 50 g/L.

c. Multipurpose Construction Adhesives: 70 g/L.

d. Fiberglass Adhesives: 80 g/L.

e. Contact Adhesive: 80 g/L.

f. Other Adhesives: 250 g/L.

g. Single-Ply Roof Membrane Sealants: 450 g/L.

h. Non-membrane Roof Sealants: 300 g/L.

i. Sealant Primers for Nonporous Substrates: 250 g/L.

j. Sealant Primers for Porous Substrates: 775 g/L.

08/2016 Paraloft Roof Replacement 075423 - Page 3 of 7

3. Sheet Flashing: Manufacturer's standard unreinforced thermoplastic polyolefin sheet flashing, 55 mils (1.4 mm) thick, minimum, of same color as sheet membrane.

4. Bonding Adhesive: Manufacturer's standard.

5. Slip Sheet: Manufacturer's standard, of thickness required for application.

6. Metal Termination Bars: Manufacturer's standard, predrilled stainless-steel or aluminum bars, approximately 1 by 1/8 inch (25 by 3 mm) thick; with anchors.

7. Metal Battens: Manufacturer's standard, aluminum-zinc-alloy-coated or zinc-coated steel sheet, approximately 1 inch wide by 0.05 inch thick (25 mm wide by

1.3 mm thick), prepunched.

8. Fasteners: Factory-coated steel fasteners and metal or plastic plates complying with corrosion-resistance provisions in FM Approvals 4470, designed for fastening membrane to substrate, and acceptable to membrane roofing system manufacturer.

9. Miscellaneous Accessories: Provide pourable sealers, preformed cone and vent sheet flashings, preformed inside and outside corner sheet flashings, T-joint covers, lap sealants, termination reglets, and other accessories.

D. Substrate Board: ASTM C 1177/C 1177M, glass-mat, water-resistant gypsum substrate, Type X, 5/8 inch (16 mm) thick.

2.3 ROOF INSULATION

A. Polyisocyanurate Board Insulation: Roofing insulation made specifically for application under single membrane roofing systems. ASTM C 1289, Type II, Class 1, Grade 2.

B. Insulation Thickness: 2” minimum.

C. Fabricate tapered insulation to provide proper drainage.

D. Cover Board: DOC PS 2, Exposure 1, oriented strand board, 7/16 inch (11 mm) thick.

2.4 Base Felt

A. Fibrous glass felt ASTM D2178, Type III or IV; No. 30 asphalt saturated felt ASTM D226, Type II; asphalt base sheet ASTM D2626, Type I or II; or vented type base sheets if approved and recommended by the roofing membrane manufacturer.

PART 3 - EXECUTION

3.1 GENERAL

A. Comply with NRCA's "The NRCA Roofing and Waterproofing Manual” and "The NRCA Membrane Roofing Systems Manual," and manufacturers recommendations for roofing installations. Follow manufacturer’s installation recommendations.

08/2016 Paraloft Roof Replacement 075423 - Page 4 of 7

B. Comply with safety requirements for demolition, ANSI A10.6-90.

3.2 RETENTION AND PROTECTION OF MATERIALS TO REMAIN

1. Protect any masts, gutters, drains, vents, caps, chimneys and other building components that will remain on and around the roof deck.

2. Remove and replace components that cannot be protected by other means.

3. Notify COR and CO of any components that require additional measures of protection.

3.3 MOISTURE AND MOLD CONTROL

A. Contractor's Moisture-Protection Plan: Avoid trapping water in finished work.

Document visible signs of mold that may appear during construction.

B. Exposed Construction Phase: Before installation of weather barriers, when materi-als are subject to wetting and exposure and to airborne mold spores, protect as fol-lows:

1. Protect porous materials from water damage.

2. Protect stored and installed material from flowing or standing water.

3. Keep porous and organic materials from coming into prolonged contact with concrete.

C. Partially Enclosed Construction Phase: After installation of weather barriers but before full enclosure and conditioning of building, when installed materials are still subject to infiltration of moisture and ambient mold spores, protect as follows:

1. Do not load or install drywall or other porous materials or components, or items with high organic content, into partially enclosed building.

2. Keep interior spaces reasonably clean and protected from water damage.

3. Discard or replace water-damaged material.

4. Do not install material that is wet.

5. Discard, replace, or clean stored or installed material that begins to grow mold.

6. Perform work in a sequence that allows any wet materials adequate time to dry before enclosing the material in drywall or other interior finishes.

3.4 SUBSTRATE PREPARATION AND REMOVAL OF EXISTING ROOFING

A. Remove all existing roofing membrane, surfacing, cover boards, insulation, fasteners, asphalt, pitch, adhesives, etc, down to the building sheathing.

B. Remove an area no larger than can be re-roofed in one day.

C. Remove all Flashings, counter-flashings, pitch pans, pipe flashings, and vents and like components necessary for application of new membrane. Clean substrates of contaminants, such as asphalt, sheet materials, dirt, and debris.

08/2016 Paraloft Roof Replacement 075423 - Page 5 of 7

D. Remove abandoned equipment curbs and penetrations.

E. Provide a clean, smooth, dry deck surface for the new roofing membrane as recommended by the manufacturer of the roofing membrane.

F. If sheathing is in good condition, remove and replace all loose nails and staples.

G. Secure nails and staples flush if not flush with the deck.

H. If broken or loose fasteners that secure deck panels to one another or to structure are observed, or if deck appears or feels inadequately attached, IMMEDIATELY notify COR and CO. Do not proceed with installation until directed by CO.

I. If deck surface is unsuitable for receiving new roofing, shows signs of water damage, or if structural integrity of deck is suspect, IMMEDIATELY notify CO. Do not proceed with installation until directed by CO.

J. Replace all damaged or non-functioning roof sheathing as agreed upon with the CO, or required by the Contract.

K. Maintain temporary protection to people at exterior areas of the existing building where selective removal work is being done.

L. Maintain temporary protection to existing structure from water and other weather where existing roofing removal work is being done.

M. Protect existing site improvements, appurtenances, and landscaping that are not scheduled for removal.

N. Inspect roof drains and extend or replace where required. Clean out roof drains and replace drain screens.

O. Immediately remove all debris from roof surface. Demolished roof system may not be stored on the roof surface.

P. Remove all demolition debris from National Forest System Land to approved site.

Q. Legally transport and dispose of materials that cannot be delivered to a source separated or mixed recycling facility to an approved landfill or disposal facility that can legally accept building materials for the purpose of disposal.

R. Do not burn, bury or otherwise dispose of rubbish and waste materials on project site.

Loosely lay insulation units. Mechanically fasten each layer of insulation to deck.

08/2016 Paraloft Roof Replacement 075423 - Page 6 of 7

3.5 ROOF DECK MATERIALS INSTALLATION

A. Coordinate with COR for inspection of the roof deck prior to roof installation. Obtain approval by the COR prior to roof insulation installation.

B. Immediately after roof tear-off, inspect and, if needed, repair of deck. Fill in tear-off areas to match existing roofing system construction.

1. Patch and smooth up any holes, depressions, or deformations in the roof deck.

2. Build up any ponding areas so there will be positive drainage off the new roofing membrane.

C. Install new roofing patch over roof infill area. If new roofing is installed the same day tear-off is made, roofing patch is not required.

3.6 INSULATION INSTALLATION

A. Coordinate installing membrane roofing system components so insulation is not exposed to precipitation or left exposed at the end of the workday.

B. Comply with membrane roofing system and insulation manufacturer's written instructions for installing roof insulation.

C. Install tapered roofing insulation to provide positive drainage to existing roof drains.

D. Install insulation under area of roofing to achieve required thickness. Where overall insulation thickness is 2.7 inches (68 mm) or greater, install two or more layers with joints of each succeeding layer staggered from joints of previous layer a minimum of 6 inches (150 mm) in each direction.

E. Mechanically Fastened Insulation: Install each layer of insulation and secure to deck using mechanical fasteners specifically designed and sized for fastening specified board-type roof insulation to deck type.

F. Fasten insulation to resist uplift pressure at corners, perimeter, and field of roof.

G. Install cover boards over insulation with long joints continuous and perpendicular to roof slopes with end joints staggered. Loosely butt cover boards together and fasten to deck.

H. Install TPO sheet according to roofing system manufacturer's written instructions and as follows:

1. Adhered Sheet Installation: Apply bonding adhesive to substrate and underside of sheet and allow to partially dry. Do not apply bonding adhesive to splice area of sheet.

2. Mechanically Fastened Sheet Installation: Secure one edge of sheet using fastening plates or battens centered within the membrane splice, and mechanically fasten sheet to roof deck.

08/2016 Paraloft Roof Replacement 075423 - Page 7 of 7

I. Seams: Clean seam areas, overlap membrane roofing, and hot-air-weld side and end laps of membrane roofing and sheet flashings. Test lap edges with probe to verify seam weld continuity. Apply lap sealant to seal cut edges of sheet membrane.

J. Spread sealant bed over deck drain flange at roof drains, and securely seal membrane roofing in place with clamping ring.

K. Flash penetrations and field-formed inside and outside corners with cured or uncured sheet flashing.

L. Terminate and seal top of sheet flashings and mechanically anchor to substrate through termination bars.

3.7 BASE FLASHING INSTALLATION

A. Install sheet flashings and preformed flashing accessories and adhere to substrates according to membrane roofing system manufacturer's written instructions.

B. Apply bonding adhesive to substrate and underside of sheet flashing at required rate and allow to partially dry. Do not apply to seam area of flashing.

C. Flash penetrations and field-formed inside and outside corners with cured or uncured sheet flashing.

D. Clean seam areas, overlap, and firmly roll sheet flashings into the adhesive. Hot-air weld side and end laps to ensure a watertight seam installation.

E. Terminate and seal top of sheet flashings and mechanically anchor to substrate through termination bars.

END OF SECTION 075423

08/2016 Paraloft Roof Replacement 076200 - Page 1 of 2 Sheet Metal Flashing & Trim

SECTION 076200

SHEET METAL FLASHING AND TRIM

1. PART 1 - GENERAL

1.01 SUMMARY

A. This section specifies flashing and sheet metal work, and required accessories.

1.02 SUBMITTALS

A. Product Data for all provided sheet metal flashing and trim. Provide cut sheets, drawings, and descriptive information to show compliance to these specifications.

1.03 WARRANTY ON FINISHES:

A. Provide manufacturer’s warranty to provide 10 year warranty period on repairs replacement of sheet metal flashing and trim that shows evidence of deterioration of factory-applied finishes within 10 years.

1.04 PROJECT CONDITIONS

A. Existing Conditions:

1. Exercise care when working on or about roof surfaces to avoid damaging or puncturing TPO or flexible flashings.

2. Roofing and flashing shall not be applied during precipitation and shall not be started in the event there is a probability of precipitation during application.

Metal faced flashing shall not be applied when ambient temperature is below 40 degrees F.

3. Coordinate Work of this Section with interfacing and adjoining Work for proper sequencing of each installation. Ensure best possible weather resistance, durability of Work, and protection of materials and finishes.

2. PART 2 - PRODUCTS

2.01 PERFORMANCE REQUIREMENTS

A. Standard: Comply with NRCA's "The NRCA Roofing Manual" and SMACNA's "Architectural Sheet Metal Manual" unless otherwise indicated. Conform to dimensions and profiles shown unless more stringent requirements are indicated.

B. FM Approvals' Listing: Manufacture and install copings and roof edge flashings that are listed in FM Approvals' "RoofNav" and approved for windstorm classification Class 1-90. Identify materials with name of fabricator and design approved by FM Approvals.

2.02 MATERIALS

A. Flashing:

1. 24 gauge galvanized steel, ASTM A361, ASTM G90, Type I, Class D or 0.032 inch thick aluminum.

B. Roof Drains, Gutters, and Downspouts.

1. 26 gauge galvanized steel, ASTM B361, ASTM G90, Type I, Class D, or

0.032 inch thick aluminum.

08/2016 Paraloft Roof Replacement 076200 - Page 2 of 2 Sheet Metal Flashing & Trim

C. Gutter Spikes.

1. ASTM F1667.

D. Plastic Cement.

1. ASTM C920, Type S.

2.03 FABRICATION

A. Fabricate sheet metal flashing and trim to comply with recommendations in cited sheet metal standard that apply to the design, dimensions, geometry, metal thickness, and other characteristics of item indicated.

B. Expansion Provisions: Where lapped expansion provisions cannot be used, form expansion joints of intermeshing hooked flanges, not less than 1 inch (25 mm) deep, filled with butyl sealant concealed within joints.

C. Fabrication Tolerances: Fabricate sheet metal flashing and trim that are capable of installation to tolerances specified in MCA's "Guide Specification for Residential Metal Roofing."

2.04 ACCESSORIES

A. Felt Underlayment: ASTM D 226, Type II (No. 30) asphalt-saturated organic felts.

B. Self-Adhering, High-Temperature Sheet Underlayment: Butyl or SBS-modified asphalt; slip-resisting-polyethylene surfaced; with release paper backing; cold applied. Stable after testing at 240 deg F (116 deg C) and passes after testing at minus 20 deg F (29 deg C); ASTM D 1970.

C. Slip Sheet: Rosin-sized building paper, 3-lb/100 sq. ft. (0.16-kg/sq. m) minimum for separating sheet metal from underlayment.

D. Fasteners: Wood screws, annular-threaded nails, self-tapping screws, self-locking rivets and bolts, and other suitable fasteners.

1. Exposed Fasteners: Heads matching color of sheet metal roofing using plastic caps or factory-applied coating.

2. Spikes and Ferrules: Same material as gutter; with spike with ferrule matching internal gutter width.

3. Fasteners for Aluminum Sheet: Aluminum or Series 300 stainless steel.

4. Fasteners for Metallic-Coated Steel Sheet: Hot-dip galvanized steel or

Series 300 stainless steel.

E. Butyl Sealant: ASTM C 1311, solvent-release butyl rubber sealant for use at limited moving expansion joints only.

F. Bituminous Coating: Cold-applied asphalt emulsion complying with

ASTM D 1187.

G. Plastic Cement: ASTM D4586, Type I

08/2016 Paraloft Roof Replacement 076200 - Page 3 of 2 Sheet Metal Flashing & Trim

3. PART 3 - EXECUTION

3.01 CONSTRUCTION

A. General: Comply with cited sheet metal standards. Allow for thermal expansion;

set true to line and level. Install Work with laps, joints, and seams permanently watertight and weatherproof; conceal fasteners where possible.

B. Metal Roof Edging.

1. Replace the existing roof edging with new edging around the entire perimeter of each roof section.

2. Bend and solder all corners. Lap soldered joints a minimum of 1 inch and fasten with rivets or sheet metal screws before bedding in plastic cement.

3. Paint exposed flashing.

C. Foundation Flashing.

1. Install galvanized steel flashing at all location required to separate wood from concrete or masonry.

D. Sill Flashing.

1. Install galvanized steel flashing at sills of exterior openings, or as shown on the Drawings.

E. Head Flashing.

1. Install galvanized steel or aluminum flashing at the head of all openings finished with wood trim. Extend flashing 2 inches up behind siding, over the top of the trim and turned down to form a drip cap.

F. Horizontal Plywood Siding Joint.

1. Install galvanized steel or aluminum "Z" flashing at joints. Extend flashing 1 inch behind top sheet and 1/2 inch in front of bottom sheet and turned down to form a drip cap.

G. Paint exposed flashing to match building trim color.

4. PART 4 - MEASUREMENT AND PAYMENT (NOT USED)

08/2016 Paraloft Roof Replacement 099113 - Page 1 of 3 Painting

SECTION 09 91 13

PAINTING

1. PART 1 – GENERAL

1.01 SUMMARY

A. Section includes surface preparation and the application of paint systems on the following exterior trim and exposed flashing installed by the work within this project.

B. The Contractor shall be responsible for furnishing all labor, equipment, materials, and incidentals required to perform this work.

1.02 SUBMITTALS

A. Product Data: For each type of product. Include preparation requirements and application instructions.

B. Furnish extra materials, from the same product run, that match products installed and that are packaged with protective covering for storage and identified with labels describing contents.

1. Paint: 5 gallons of each material and color applied.

1.03 DELIVERY, STORAGE, AND HANDLING

A. Store materials not in use in tightly covered containers in well-ventilated areas with ambient temperatures continuously maintained at not less than 45 deg F (7 deg C).

1. Maintain containers in clean condition, free of foreign materials and residue.

2. Remove rags and waste from storage areas daily.

1.04 FIELD CONDITIONS

A. Apply paints only when temperature of surfaces to be painted and ambient air temperatures are between 45 and 95 deg F (10 and 35 deg C).

B. Do not apply paints in snow, rain, fog, or mist; when relative humidity exceeds 85 percent;

at temperatures less than 5 deg F (3 deg C) above the dew point; or to damp or wet surfaces.

2. PART 2 – PRODUCTS

2.01 PAINT AND FINISH PRODUCTS.

A. Paint specified in this section is based on products manufactured by Sherwin-Williams Company, Cleveland, Ohio. Other manufacturer's products may be used provided they are approved as equals. Provide primers and other undercoat paint produced by same manufacturer as finish coats. Paint products shall be fresh and well ground; shall not settle readily, cake, or thicken in the container; shall be broken up readily with paddle to a smooth consistency; and shall have easy application properties. Other materials such as linseed oil, turpentine, mineral spirits, miscellaneous thinners, varnish, and shellac shall be the highest quality of an approved manufacturer.

B. Use high-quality, exterior-grade, Olympic A-100 Flat Latex/Acrylic Exterior House and Trim, or approved equivalent product.

08/2016 Paraloft Roof Replacement 099113 - Page 2 of 3 Painting

2.02 COLORS.

A. Match Existing Trim Color:

1. Olympic brand, Sarsaparilla, D33-6.

2.03 FILLING COMPOUNDS.

A. Use only high quality, nonshrink materials which have been approved.

3. PART 3 – EXECUTION

3.01 PREPARATION

A. Wash all surfaces receiving paint being careful not to damage siding.

B. Scrape any loose paint prior to painting.

C. Nail any loose boards, repair and/or replace damaged and missing trim pieces or siding, hammer in protruding nails, and fill any holes with wood filler as part of the surface preparation.

D. Remove hardware, hardware accessories, machined surfaces, plates, lighting fixtures, and similar items in place and not to be painted, or provide surface applied protection. Reinstall removed items when final coat is thoroughly dry.

E. Caulk and seal around air conditioners, vents, windows, and doorframes. Ensure surfaces are dry prior to application. Force caulking into joint with sufficient pressure to solidly fill the joints. Exposed surface of caulking shall be uniformly smooth and free of wrinkles. Remove excess caulking from finished surfaces.

F. Tie back or protect existing vegetation. Do not cover vegetation for extended periods of time; ensure vegetation does not suffer heat damage.

G. Cover and protect finished work and surfaces not to be painted. Use drop cloths of adequate size to protect adjacent areas.

H. Mix and prepare painting materials in accordance with manufacturer's directions.

I. Obtain approval from the COR after surface preparation is complete and prior to application of any painted topcoat.

3.02 EXTERIOR FINISHES

A. Paint finishes shall include all flashing and trim installed by the work in this project, including.

B. Provide two finish topcoats for new siding and for existing siding that does not have a topcoat.

C. Do not paint over dirt, rust, scale, grease, moisture, voids and blemishes, or other conditions detrimental to formation of a durable paint film.

D. Apply each coat of paint in a manner that results in a uniform well covered appearance.

Runs, sags, and other imperfections will not be accepted. Edges and lines shall be neat and true with a minimum splatter and over spray on adjacent materials.

E. Use manufacturer recommended temperature and wood moisture content for surfaces to be painted.

F. Apply paint in accordance with manufacturer's directions. Use techniques best suited for substrate and type of material being applied.

G. Finish exterior doors on tops, bottoms, and side edges same as exterior faces.

08/2016 Paraloft Roof Replacement 099113 - Page 3 of 3 Painting

H. Paint shall not be thinned unless approval is received in advance from the COR.

I. Secure approval of each coat before proceeding with the next.

J. Apply additional coats when undercoats, stains, or other conditions show through final coat of paint. Final finish shall have uniform color and appearance.

3.03 CLEAN UP

A. Remove paint spots, overspray, oil, or stains from windows, hardware, and other surfaces not receiving paint finish. Remove all debris including masking tape and paper from the site prior to final inspection.