HASS REV 2025 Central Elem Roofing Project Manual [Nov 2024] (1).pdf

Hastings Area School System

Central Elementary School OMNIA Certified Proposal Numbers R230404-320245

& R230404-320237 Restoration of roofs C, D, & E

Replacement of roofs A, B, F, & G

2025 Central Elem Roof Project

Project Manual

Prepared For:

Project Manager Mr. Dale Krueger

SECTION 00010

TABLE OF CONTENTS

DIVISION 00-INTRODUCTORY INFORMATION, PROCUREMENT AND CONTRACTING

REQUIREMENTS

00001 Title Page 00010 Table of Contents 00002 Aerial Overviews & Roof Drawings & Core Data 00411 Project’s Bid Form

DIVISION 01 - GENERAL REQUIRMENTS

01010 Summary

DIVISION 07 - THERMAL AND MOISTURE PROTECTION

070150.16 Maintenance Cleaning of Membrane Roofing (RoofTec)

070150.74 Rehabilitation of Single Ply Roofing (AlphaGuard)

075416 Ketone Ethylene Ester (KEE) Roofing

DIVISION 16 – OTHER

Tremco AlphaGuard System Installation Manual TremPly KEE System Installation Manual Related Details & Drawings

SECTION 00002

Aerial Photos

Central Elementary School

Restoration of roofs C, D, & E Replacement of roofs A, B, F, & G

Restoration Replacement Safety

Roof Drawings & Core Data

Central Elementary School Drawing

Roof Drawings & Core Data

Central Elementary School Core Data

End Section 00002

DOCUMENT 00411 – ROOF PROJECT BID FORM

232 W Grand St.

Hastings, MI 49058

Bidder: _______________________________________________________________________ (Bidder Name Here)

Hard copies of proposals must be received in triplicate by 1:00 pm on Friday November 22nd delivered to the below address.

Hastings Area School System Administration Office 232 W Grand St, Hastings, MI 9058 Attn: Dale Krueger “HASS 2025 Central Elem Roofing Project”

Ladies & Gentlemen, The undersigned Bidder, having carefully examined the Bidding and Contract Requirements, Conditions of the Contract, Drawings, Specifications, and all subsequent Addenda, all as issued by the Owner, having visited the site, and being familiar with all conditions and requirements of the Work, hereby agrees to furnish all material, labor, equipment and services as described in the above documents, without exception, including all scheduled allowances if any, necessary to complete the construction of:

Single Prime (All trades) Contract

Total cost for the above-named Project, in accordance with the requirements of the Bidding Documents, for the sum of:

________________________________________________________ Dollars ($____________________)

TOTAL NUMBER OF DAYS TO COMPLETE PROJECT: ____________________________________________

TOTALS BY LOCATION: Base bid costs per building/project shall be recorded below and will be tracked for this bid package for accounting purposes:

1. Central Elem Restoration Roof Sections C, D, & E – Alphaguard Bio Fluid-Applied Roof Renovation System w/ 20-yr manufacturer’s warranty:

OMNIA Materials: $___________________________________

Labor, Misc. Materials, Etc: $___________________________________

2. Central Elem Replacement Roof Sections A, B, F, & G – TremPly KEE Single Ply Roof System w/ 30-yr manufacturer’s warranty:

OMNIA Materials: $___________________________________

Labor, Misc. Materials, Etc: $___________________________________

TAXES: Bid sum includes all applicable taxes, including Michigan Sales Tax. Confirm that your company can pay Michigan Sales Tax: ___ Yes ___ No

COST OF BONDS: Bid sum includes cost of furnishing a Performance & Labor Bond and a Material Payment Bond, each in the amount of 100% of Base Bid.

ACKNOWLEDGEMENT OF ADDENDA: The undersigned Bidder acknowledges receipt of and use of the following Addenda in the preparation of this Quote:

Addendum No. 1, dated _____________ Addendum No. 2, dated _________________

BID SECURITY: Accompanying this Bid, as required by the Request for Proposal, is a bid security form of (Certified Check/Cashier’s Check, Bidder’s Bond) in the amount of:

_________________________________________________Dollars ($________________________) payable to the Owner, which it is agreed, shall be retained as liquidated damages, not as a penalty, by the Owner, if the undersigned fails to execute the Contract in conformity with the form of Contract incorporated in the Contract Documents and fails to furnish specified bonds within ten (10) days after date of issuance of Letter of Intent to the undersigned.

GUARANTEE: The undersigned agrees to execute a contract for this Work in the above amount. The undersigned also agrees to bid in November 2024 and hold prices until the project’s commencement date, in Summer 2025.

TIME OF COMPLETION: The undersigned Bidder proposes and agrees hereby to commence the Work of the Contract Documents on a date specified in a written Notice to proceed to be issued by the Owner and shall fully complete the Work within 120 days of initiating work.

Comments: ____________________________________________________________

UNIT PRICES: The undersigned Bidder provides for unit prices per sections 070150.74.

Price to spot replace additional wet insulation: $______________________per sqft Price to repair a non-functional roof drain: $______________________each Price to install a new drain: $______________________each Price to repair existing metal decking: $______________________per foot Price to repair existing gypsum decking: $______________________per foot

CONTRACTOR'S LICENSE: The undersigned further states that he is a duly licensed Contractor, for the type of work proposed, in the State of Michigan and that all fees, permits, etc., pursuant to the submission of this proposal have been paid in full.

Customer Name: ____Hastings Area School System __________________

Address: ____232 W Grand St _____________________________

City: ____Hastings___________________________________

State: ____MI ________________________________

Zip: ____49058_____________________________________

OMNIA Contract No: R230404-320245 &R230404-320237

OWNER PURCHASED TREMCO MATERIAL LIST

The following material list is to be included in the bid form and signed/dated by the Contractor. Failure to provide this information will render your bid unresponsive. The owner has considered other materials available and has elected to purchase the following list of materials from Tremco Incorporated through an awarded RFP contract which was advertised and competed by a national cooperative purchasing organization. Only these materials, in the quantities listed, will be supplied. The Contractor is responsible for purchasing any additional material directly from Tremco at the contractor's cost.

The undersigned Bidder, having carefully examined the Bidding and Contract Requirements, Conditions of the Contract, Drawings, Specifications, and all subsequent Addenda, all as issued by the Owner, having visited the site, and being familiar with all conditions and requirements of the Work, hereby agrees to furnish all non Tremco material, labor, equipment and services as described in the above documents, without exception, including all scheduled Allowances if any, necessary to complete the roofing work at:

Building Name: __HASS Central Elem - Sections A-G _______

Address: __232 W Grand St, Hastings, MI 49058 _______

The contractor is also responsible for ALL other items not on this list necessary for the completion of work specified. The unloading and safeguarding of the Tremco material and the storage of said material in a secure area is the sole responsibility of the contractor. Any unused material will become the property of the contractor at the completion of the project.

SKU Description Unit of Measure

Price / Unit

Quantity Total Cost

351700 800 Alphaguard BIO Base Coat A & B 4 gal kit $534.00

351710T800 Alphaguard BIO Top Coat A & B 3.1 gal kit $440.00

351681 801 Alphaguard M-Prime 1 gal $270.00

351675 805 Alphaguard WB Primer 5 gal $380.00

494105P Geogard Primer 5 gal $741.00

230004R Permafab Max 4” x 300’ $72.00

230006R Permafab Max 6” x 300’ $98.00

230012R Permafab Max 12” x 300’ $187.00

290400 Permafab Max 40” x 324’ $566.00

876450 309 TremSeal Pro (white) 30 tubes / cs $468.00

FG5041212 FG Hatch Guard 30-36” x 30-54” (Gray) Kit $3,184.00

8533260 503 TremPly KEE 60 mil 37” x 80’ $1,446.00

8533160 503 TremPly KEE 60 mil Non-Reinforced 24” x 50’ $1,291.00

8533660FB503 TremPly KEE FB 60 mil 72” x 80’ $2,998.00

8533200 805 TremPly KEE LV Bonding Adhesive 5 gal $601.00

8533110 501 TremPly KEE Pipe Flashing 1”-6” 8 / case $614.00

8533180 501 TremPly KEE Strip-In 6” x 100’ $387.00

8533170 501 TremPly KEE T-Joint Covers 100 /case $321.00

8533120 501 TremPly KEE Universal Corners 20 / case $435.00

365420PK800 POWERply Endure BIO Adhesive 4 gal kit $296.00

371286-1 TremLock 215 Single Ply Metal Kit

876450 309 TremSeal Pro (white) 30 tubes / cs $468.00

3054518AC550 Tremboard AC 1/8” x 4' x 5' 30 SQS/PAL $1,740.00

Freight TBD

Sales Tax N/A

55 56 57 58 59

SUBMISSION OF BID: Respectfully submitted this ____ day of November 2024.

By: ______________________________________________________________________ (Name of bidding firm or corporation)

Type or Print Name: ____________________________________________________________

Signature: ____________________________________________________________________

Address: ________________________________________________________________

Email: ________________________________________________________________________

Phone: _______________________________________________________ ____________

AFFIDAVIT OF COMPLIANCE – IRAN ECONOMIC SANCTIONS ACT

Michigan Public Act No. 517 of 2012

The undersigned, the owner or authorized officer of ___________________________________ (the “Bidder”), pursuant to the compliance certification requirement provided in the Hastings Area School System request for proposal for 2025 Central Elem Roofing Project hereby certifies, represents and warrants that the Bidder (including its officers, directors and employees) is not an “Iran Linked Business” within the meaning of the Iran Economic Sanctions Act, Michigan Public Act No. 517 of 2012 (the “Act”), and that in the event Bidder is awarded a Contract as a result of the aforementioned Invitation To Bid, the Bidder will not become an “Iran Linked Business” at any time during the course of performing under the Contract.

The Bidder further acknowledges that any person who is found to have submitted a false certification is responsible for a civil penalty of not more than $250,000.00 or 2 times the amount of the Contract or proposed Contract for which the false certification was made, whichever is greater, the cost of the Intermediate School District’s investigation, and reasonable attorney fees, in addition to the fine. Moreover, any person who submitted a false certification shall be ineligible to bid on an Invitation To Bid for three (3) years from the date it is determined that the person has submitted the false certification.

Contractor:

By: _________________________________

Title: _________________________________

Date:________________________________

STATE OF MICHIGAN

COUNTY OF _______________

This instrument was acknowledged before me on the _____ day of ____________, 20___, by

________________________, Notary Public _____________________County, Michigan

My Commission Expires:_______________

Acting in the County of:________________

FAMILIAL RELATIONSHIP DISCLOSURE STATEMENT

Important: This disclosure statement must be included with your bid - required by state law (P.A. 232 of

2004) As required by Public Act 232 of 2004, all bids shall be accompanied by a sworn and notarized statement disclosing any familial relationship that exists between the owner or any employee of the bidder and any member of the School Board or the Superintendent of Hastings Area School System.

The undersigned, the owner or authorized officer of ___________________________________________________ (the Bidder), pursuant to the familial disclosure requirement provided in the attached invitation to bid, hereby represent and warrant, except as provided below, that no familial relationships exist between the owner(s) or any employee of the company and any member of the School Board or the Superintendent of HASS. If such a relationship exists, please explain:

BIDDER:__________________________

By:______________________________

Title:_____________________________

STATE OF MICHIGAN

COUNTY OF _______________

This instrument was acknowledged before me on the _____ day of ____________, 20___, by

___________________, Notary Public ___________________County, Michigan

My Commission Expires:_____________

Acting in the County of:________________

END OF DOCUMENT 00411

011000 - Page 1 of 5

SUMMARY

SECTION 011000

PART 1 - GENERAL

1.1 SUMMARY

A. Section Includes:

1. Project information.

2. Work covered by Contract Documents.

3. Owner-furnished products.

4. Access to site.

5. Coordination with occupants.

6. Work restrictions.

7. Specification and drawing conventions.

8. Miscellaneous provisions.

1.2 PROJECT INFORMATION

A. Facility Owner Information:

1. Owner Name: Hastings Area School System.

2. Owner's Representative: Dale Krueger.

3. Owner's Consultant:

a. Roof Consultant: Brad Hayden; Field Advisor; 269.908.1738;

bhayden@tremcoinc.com.

b. Direct all questions to Owner's Consultant.

c. Where individual specification sections refer to Owner, Owner may elect to delegate submittal and response responsibilities to Owner's Consultant.

B. Facility Information:

1. Customer Name: Hastings Area School System.

2. Building Name: Central Elementary School.

3. Building Location: 509 S Broadway St, Hastings, MI 49058.

011000 - Page 2 of 5

C. Project Information:

1. Project Name: Central Elem Roofing.

1.3 WORK COVERED BY CONTRACT DOCUMENTS

A. The Work of Project is defined by the Contract Documents and consists of the following:

1. Roof Area RA#1: Sections C, D, & E:

a. Area of Roof(s): 13750 sq. ft.

b. Slope of Existing Roof: 1/4 inch per 12 inches.

c. Description of Work:

1) Re-roofing preparation specified in Division 07 Section "Preparation for Re- Roofing."

2) Existing roof rehabilitation specified in Division 07 Section 070150.74 - Rehabilitation of Single Ply Roofing (AlphaGuard).

d. Scope of Work:

1) Perform identified start-up repairs to existing flashings.

2) Perform infrared diagnostic moisture survey to determine substrate roof conditions.

3) Spot replace identified wet/defective insulation as indicated on moisture survey.

4) Clean roof surface using EPA compliant roof cleaning process with water reclamation.

5) Prime cleaned surface of existing EPDM roof membrane using water based primer.

6) Apply two-component Alphaguard Bio base coat at rate of 3 gallons per 100 sqft (48 wet mils). Fully embed Permafab polyester reinforcing mesh. Allow to cure.

7) Apply two-component Alphaguard Bio top coat at reate of 2 gallons per 100 sqft (32 wet mils). Allow to cure.

8) Furnish and install new pre-engineered, wind-rated perimeter metal fascia system.

011000 - Page 3 of 5

9) Provide 20-yr manufacturer's proactive warranty with inspections in years 2, 5, 10, & 15.

2. Roof Area RA#2: Sections A, B, F, & G:

a. Area of Roof(s): 24,400 sq. ft.

b. Description of Work:

1) Replacement roofing specified in Division 07 Section 75416-Keton Ethylene Esther (KEE) Roofing..

c. Scope of Work:

1) Remove all existing roof system components down to the structural gypsum decking.

2) Inspect and repair roof deck as necessary.

3) Install new tapered R-30 average polyisocyanurate insulation using low rise foam insulation adhesive.

4) Install new 1/8" thickness Tremboard AC cover board using low rise foam insulation adhesive.

5) Adhere new KEE FB 60 mil single ply roof membrane in two-component PowerPly Endure Bio urethane membrane adhesive at rate of 2 gallons per 100 sqft.

6) Install new TremPly KEE smooth backed flashings using solvent based bonding adhesive.

7) Furnish and install new pre-engineered, wind-rated perimeter metal fascia system.

8) Provide 30-year manufacturer's proactive warranty with inspections in years 2, 5, 10, 15, 20, & 25.

B. Type of Contract:

1. Project will be constructed under a single prime contract.

1.4 OWNER-FURNISHED PRODUCTS

A. Owner will furnish the following products described in individual specification sections. The Work includes receiving, unloading, handling, storing, protecting, and installing Owner-furnished products and, where applicable, furnishing accessory materials not indicated as furnished by Owner.

011000 - Page 4 of 5

1. Basis-of-Design Products listed in the following Sections:

a. Division 07 Section 070150.74-Rehabilitation of Single Ply Roofing (Alphaguard).

b. Division 07 Section 075416-Keton Ethylene Esther (KEE) Roofing.

1.5 ACCESS TO SITE

A. Use of Site, Limited: Contractor shall have limited use of Project site for construction operations as indicated on Drawings by the Contract limits and as indicated by requirements of this Section.

1. Use of Site: Limit use of Project site to work in areas indicated and as directed by Owner.

Do not disturb portions of Project site beyond areas in which the Work is indicated, including designated lay-down areas.

2. Driveways, Walkways and Entrances: Keep driveways, facility loading areas, and entrances serving premises clear and available to Owner, Owner's employees, and emergency vehicles at all times. Do not use these areas for parking or storage of materials.

a. Schedule deliveries to minimize use of driveways and entrances by construction operations.

b. Schedule deliveries to minimize space and time requirements for storage of materials and equipment on-site.

B. Condition of Existing Building: Maintain portions of existing building affected by construction operations in a weathertight condition throughout construction period. Repair damage caused by construction operations.

1.6 COORDINATION WITH OCCUPANTS

A. Owner Occupancy: Owner will occupy site including existing and adjacent building(s) during entire construction period. Cooperate with Owner during construction operations to minimize conflicts and facilitate Owner usage. Perform the Work so as not to interfere with Owner's day-to-day operations. Maintain existing exits unless otherwise indicated.

1. Maintain access to existing walkways, corridors, and other adjacent occupied or used facilities. Do not close or obstruct walkways, corridors, or other occupied or used facilities without written permission from Owner and approval of authorities having jurisdiction.

2. Notify Owner not less than 72 hours in advance of activities that will affect Owner's operations.

1.7 WORK RESTRICTIONS

A. Work Restrictions, General: Comply with restrictions on construction operations.

1. Comply with limitations on use of public streets and with other requirements of authorities having jurisdiction.

011000 - Page 5 of 5

B. Existing Utility Interruptions: Do not interrupt utilities serving facilities occupied by Owner or others

C. Noise, Vibration, and Odors: Coordinate operations that may result in high levels of noise and vibration, odors, or other disruption to Owner occupancy with Owner.

1. Notify Owner not less than two days in advance of proposed disruptive operations.

2. Obtain Owner's written permission before proceeding with disruptive operations.

D. Nonsmoking Building: Smoking is not permitted within the building or within 25 feet of entrances, operable windows, or outdoor-air intakes.

E. Nonsmoking Project: Use of tobacco products on the Project site is not permitted.

F. Controlled Substances: Use of other controlled substances on the Project site is not permitted.

1.8 SPECIFICATION AND DRAWING CONVENTIONS

A. Specification Content: The Specifications use certain conventions for the style of language and the intended meaning of certain terms, words, and phrases when used in particular situations.

These conventions are as follows:

1. Imperative mood and streamlined language are generally used in the Specifications. The words "shall," "shall be," or "shall comply with," depending on the context, are implied where a colon (:) is used within a sentence or phrase.

2. Specification requirements are to be performed by Contractor unless specifically stated otherwise.

B. Division 01 General Requirements: Requirements of Sections in Division 01 apply to the Work of all Sections in the Specifications.

C. Drawing Coordination: Requirements for materials and products identified on Drawings are described in detail in the Specifications. One or more of the following are used on Drawings to identify materials and products:

1. Terminology: Materials and products are identified by the typical generic terms used in the individual Specifications Sections.

2. Abbreviations: Materials and products are identified by abbreviations scheduled on Drawings.

PART 2 - PRODUCTS (Not Used)

PART 3 - EXECUTION (Not Used)

END OF SECTION 011000

070150.16 - Page 1 of 3

MAINTENANCE CLEANING OF MEMBRANE ROOFING

SECTION 070150.16

PART 1 - GENERAL

1.1 SUMMARY

A. Section Includes:

1. Pressure washing of roof membrane including membrane flashings, with full water reclamation.

B. Related Requirements:

1. Division 07 roofing rehabilitation section for repair and restoration coating of roofing membranes.

1.2 ACTION SUBMITTALS

A. Product Data: For cleaning compounds.

B.

1.3 INFORMATIONAL SUBMITTALS

A. Work Plan: For maintenance cleaning, including description of means and methods for water reclamation.

1.4 QUALITY ASSURANCE

A. Operator Qualifications: Trained and approved by manufacturer of cleaning equipment, with a record of successful roofing membrane cleaning.

B. Regulatory Requirements: Comply with governing EPA regulations. Comply with hauling and disposal regulations of authorities having jurisdiction.

1.5 PROJECT / FIELD CONDITIONS

A. Owner will occupy portions of building immediately below roof area to be maintained. Conduct operations so Owner's operations are not disrupted. Provide Owner with not less than 72 hours' notice of activities that may affect Owner's operations.

B. Protect building to be cleaned, adjacent buildings, walkways, site improvements, exterior plantings, and landscaping from damage or soiling from maintenance operations.

C. Maintain access to existing walkways, corridors, and other adjacent occupied or used facilities.

070150.16 - Page 2 of 3

PART 2 - PRODUCTS

2.1 CLEANING SYSTEM OPERATORS

A. Source Limitations: Engage a qualified roofing maintenance cleaning firm to perform cleaning of membrane roofing.

B. Approved Operators: RoofTec Cleaning Systems, Tremco CPG Inc., Beachwood OH, (800) 562- 2728.

2.2 PERFORMANCE REQUIREMENTS

A. Water Reclamation: Provide maintenance cleaning of membrane roofing that provides 100 percent reclamation of cleaning water and complies with applicable provisions of the US EPA National Pollutant Discharge Elimination System (NPDES) program and requirements of local authorities having jurisdiction.

2.3 MATERIALS

A. Pre-cleaning Treatment: Detergent-free.

1. Product: Tremco, RoofTec PREKLEEN.

B. Pressure Wash Cleaning Solution: VOC, detergent, phosphate, and surfactant free.

1. Product: Tremco, RoofTec RENEW Cleaner.

PART 3 - EXECUTION

3.1 PREPARATION

A. Comply with warranty requirements of existing roof membrane manufacturer.

B. Shut off rooftop utilities and service piping before beginning the Work.

C. Test existing roof drains to verify that they are not blocked or restricted. Immediately notify Owner of any blockages or restrictions.

D. Coordinate with Owner to shut down air-intake equipment in the vicinity of the Work. Cover air-intake louvers before proceeding with maintenance cleaning work that could affect indoor air quality or activate smoke detectors in the ductwork.

E. Maintain roof drains in functioning condition to ensure roof drainage at end of each workday.

Prevent debris from entering or blocking roof drains and conductors.

3.2 MAINTENANCE CLEANING OF ROOF MEMBRANE

A. Pretreat membrane and flashings when recommended by cleaning equipment manufacturer based upon site assessment of membrane condition.

070150.16 - Page 3 of 3

B. Apply pressure wash cleaning solution onto membrane and flashing surfaces.

C. Pressure wash membrane and flashings using equipment and methods recommended in writing by cleaning equipment manufacturer for specific application. Utilize rotating wash head equipment operated at not less than 2,000 psi (13,800 kPa). Use equipment utilizing vacuum removal of wash water and residues.

3.3

3.4 DISPOSAL

A. Collect cleaning water and associated cleaning compounds and residual material and process to meet US EPA and local environmental requirements for legal discharge.

END OF SECTION 070150.16

070150.74 - Page 1 of 13

REHABILITATION OF SINGLE PLY ROOFING

SECTION 070150.74

PART 1 - GENERAL

1.1 SUMMARY

A. This Section includes the following:

1. Roof membrane coating preparation.

2. Application of reinforced fluid-applied roof membrane and flashings over existing fully adhered EPDM membrane roofing.

B. Related Information:

1. Division 00 Document "Existing Condition Information" for related Project information not part of the Contract Documents.

2. Division 01 Section "Summary" for use of the premises and phasing requirements, and for restrictions on use of the premises due to Owner or tenant occupancy.

3. Division 07 Section "Maintenance Cleaning of Membrane Roofing" for reclaimed water cleaning system for preparation of existing roof substrate.

1.2 ROOFING CONFERENCES

A. Roofing Rehabilitation Preinstallation Conference: Conduct conference at Project site to review methods and procedures related to roofing system.

1. Meet with Owner; Owner's Consultant; roofing coating materials manufacturer's representative; roofing rehabilitation Installer including project manager and foreman; and installers whose work interfaces with or affects rehabilitation including installers of roof accessories and roof-mounted equipment requiring removal and replacement as part of the Work.

2. Review temporary protection requirements for existing roofing system that is to remain uncoated, during and after installation.

3. Review methods and procedures related to re-coating preparation, including coating manufacturer's written instructions.

4. Review roof drainage during each stage of coating and review roof drain plugging and plug removal procedures.

5. Review and finalize construction schedule, and verify availability of materials, Installer's personnel, equipment, and facilities needed to make progress and avoid delays.

070150.74 - Page 2 of 13

6. Review base flashings, special roofing details, drainage, penetrations, equipment curbs, and condition of other construction that will affect coating.

7. Review HVAC shutdown and sealing of air intakes.

8. Review shutdown of fire-suppression, -protection, and -alarm and -detection systems.

9. Review procedures for asbestos removal or unexpected discovery of asbestos-containing materials.

10. Review governing regulations and requirements for insurance and certificates if applicable.

11. Review existing conditions that may require notification of Owner before proceeding.

1.3 MATERIALS OWNERSHIP

A. Demolished materials shall become Contractor's property and shall be removed from Project site.

1.4 DEFINITIONS

A. Roofing Terminology: Refer to ASTM D1079 "Standard Terminology Relating to Roofing and Waterproofing" and glossary in NRCA's "The NRCA Roofing Manual: Membrane Roof Systems" for definition of terms related to roofing work in this Section.

B. Roofing Coating Preparation: Existing roofing that is to remain and be prepared to accept restorative coating application.

C. Patching: Removal of a portion of existing membrane roofing system from deck or removal of selected components and accessories from existing membrane roofing system and replacement with similar materials.

D. Remove: Detach items from existing construction and legally dispose of them off-site unless indicated to be removed and reinstalled.

E. Existing to Remain: Existing items of construction that are not indicated to be removed.

1.5 ACTION SUBMITTALS

A. Product Data: For each type of product specified.

1.6 INFORMATIONAL SUBMITTALS

A. Contractor's Product Certificate: Submit notarized certificate, indicating products intended for Work of this Section, including product names and numbers and manufacturers' names, with statement indicating that products to be provided meet the requirements of the Contract Documents.

1. Provide manufacturer's UL listing certificate for roofing system.

070150.74 - Page 3 of 13

B. Product Test Reports: Based on evaluation of comprehensive tests performed by manufacturer and witnessed by a qualified testing agency, for components of roofing rehabilitation system.

C. Qualification Data: For Installer, Manufacturer, and Roofing Inspector.

1. Letter written for this Project indicating manufacturer approval of Installer to apply specified products and provide specified warranty.

D. Warranties: Unexecuted sample copies of special warranties.

E. Photographs or Video Recordings: Show existing conditions of adjoining construction and site improvements, including exterior and interior finish surfaces, which might be misconstrued as having been damaged by rehabilitation operations. Submit before Work begins.

F. Proposed Protection Measures: Submit report, including Drawings, that indicates the measures proposed for protecting individuals and property, for environmental protection, and for dust control. Indicate proposed locations and construction of barriers.

G. Inspection Reports: Reports of Roofing Inspector. Include weather conditions, description of work performed, tests performed, defective work observed, and corrective actions required and carried out.

1. Submit report within 48 hours after inspection.

1.7 CLOSEOUT SUBMITTALS

A. Maintenance Data: To include in maintenance manuals.

B. Warranties: Executed copies of approved warranty forms.

1.8 QUALITY ASSURANCE

A. Installer Qualifications: An employer of workers trained and certified by manufacturer, including a full-time on-site supervisor with a minimum of three years' experience installing products similar to those specified, able to communicate verbally with Contractor, Architect, and employees, and the following:

1. Qualified by the manufacturer to install manufacturer's product and furnish warranty of type specified.

B. Manufacturer Qualifications: Primary product manufacturer that is UL listed for roofing system identical to that specified for this Project with minimum five years' experience in manufacture of comparable products in successful use in similar applications, and able to furnish warranty with provisions matching specified requirements.

C. Roofing Inspector Qualifications: A technical representative of manufacturer not engaged in the sale of products and experienced in the installation and maintenance of the specified roofing system, qualified to perform roofing observation and inspection specified in Field Quality Control Article, to determine Installer's compliance with the requirements of this Project, and approved

070150.74 - Page 4 of 13 by the manufacturer to issue warranty certification. The Roofing Inspector shall be one of the following:

1. An authorized full-time technical employee of the manufacturer.

2. An independent party certified as a Registered Roof Observer by the International Institute of Building Enclosure Consultants (formerly the Roof Consultants Institute) retained by the Contractor or the Manufacturer and approved by the Manufacturer.

1.9 FIELD CONDITIONS

A. Weather Limitations: Proceed with rehabilitation work only when existing and forecasted weather conditions permit Work to proceed without water entering into existing roofing system or building.

1. Store all materials prior to application at temperatures recommended by manufacturer.

2. Apply coatings within range of ambient and substrate temperatures recommended by manufacturer.

3. Do not apply roofing in snow, rain, fog, or mist.

B. Protect building to be rehabilitated, adjacent buildings, walkways, site improvements, exterior plantings, and landscaping from damage or soiling from rehabilitation operations.

C. Maintain access to existing walkways, corridors, and other adjacent occupied or used facilities.

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

E. Owner will occupy portions of building immediately below re-coating area. Conduct re-coating so Owner's operations will not be disrupted. Provide Owner with not less than 72 hours' notice of activities that may affect Owner's operations.

1.10 WARRANTY

A. Manufacturer's Warranty: Roof System Manufacturer's standard form in which Manufacturer agrees to repair or replace components of roofing system that fail in materials or workmanship within warranty period, as follows.

1. Form of Warranty: Manufacturer's standard warranty form.

2. Scope of Warranty: Work of this Section and including sheet metal details and termination details installed by the roof system Installer and approved by the Roof System Manufacturer.

3. Warranty Period: 20 years from date of completion.

070150.74 - Page 5 of 13

B. Manufacturer Inspection Services: By manufacturer's technical representative, to report maintenance responsibilities to Owner necessary for preservation of Owner's warranty rights.

The cost of manufacturer's inspections is included in the Contract Sum.

1. Inspections to occur in following years: 2, 5, 10, 15 following completion.

C. Installer Warranty: Installer's warranty signed by Installer, as follows.

1. Form of Warranty: Form acceptable to Roofing Manufacturer and Owner.

2. Scope of Warranty: Work of this Section.

3. Warranty Period: 2 years from date of completion.

PART 2 - PRODUCTS

2.1 MANUFACTURERS

A. Basis of Design: The roof system specified in this Section is based upon products of Tremco CPG Inc, Beachwood, OH, (800) 562-2728, www.tremcoroofing.com that are named in other Part 2 articles. Provide specified products.

1. Manufacturers of comparable products: Approved by Owner, Architect, or Owner's Consultant prior to bid.

B. Source Limitations: Obtain components for roofing system from same manufacturer as membrane roofing or manufacturer approved by membrane roofing manufacturer.

2.2 PERFORMANCE REQUIREMENTS

A. General Performance: Rehabilitated roofing shall withstand exposure to weather without failure or leaks due to defective manufacture or installation.

1. Accelerated Weathering: Roofing system shall withstand 5000 hours of exposure when tested according to ASTM G152, ASTM G154, or ASTM G155.

B. Material Compatibility: Provide roofing materials that are compatible with one another under conditions of service and application required, as demonstrated by roofing manufacturer based on testing and field experience.

C. Exterior Fire-Test Exposure: Roofing system exterior fire-test exposure performance following application of rehabilitation coating shall be not be less than that of the prerehabilitated roof performance when tested in accordance with ASTM E108, based upon manufacturer's tests of identical applications.

D. Bio-Based Content: Provide roofing rehabilitation coating materials meeting requirements of USDA Bio-based Affirmative Procurement Program, with not less than 20 percent bio-based content.

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2.3 MATERIALS, GENERAL

A. General: Rehabilitation materials recommended by roofing system manufacturer for intended use and compatible with components of existing membrane roofing system.

B. Infill Materials: Where required to replace test cores and to patch existing roofing, use infill materials matching existing membrane roofing system materials, unless otherwise indicated.

C. Temporary Roof Drainage: Design and selection of materials for temporary roof drainage are responsibilities of the Contractor.

2.4 FLUID-APPLIED ROOFING MEMBRANE COATING

A. Polyurethane Elastomeric Fluid-Applied System: Two-coat fluid-applied roofing membrane formulated for application over prepared existing roofing substrate.

1. Polyurethane Roof Coating System Base Coat: Bio-based, low-odor low-VOC two-part, for use with a compatible top coat.

a. Basis of design product: Tremco, AlphaGuard BIO Base Coat.

b. Combustion Characteristics, UL 790: Maintains combustion characteristics of existing roof system.

c. Volatile Organic Compounds (VOC), maximum, ASTM D3960: 1 g/L.

d. Accelerated Weathering, 5000 hours, ASTM G154: Pass.

e. Hardness, Shore A, minimum, ASTM D2240: 80.

f. Solids, by volume, ASTM D2697: 100 percent.

g. Bio-Based Content, Minimum: 70 percent.

h. Minimum Thickness, Base Coat reinforced over Smooth Single-Ply: 48 mils (1.22

mm) wet.

i. Minimum Thickness, Base Coat reinforced over Granular Surfaced MB: 64 mils (1.62

mm) wet.

2. Polyurethane roof coating system top coat, bio-based low-odor low-VOC two-part, for application over compatible base coat.

a. Basis of design product: Tremco, AlphaGuard BIO Top Coat.

b. Combustion Characteristics, UL790: Maintains combustion characteristics of existing roof system.

c. Volatile Organic Compounds (VOC), maximum, ASTM D3960: 6 g/L.

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d. Solar Reflectance Index (SRI), ASTM E1980: For white, not less than 103.

e. Accelerated Weathering, 5000 hours, ASTM G 154: Pass.

f. Hardness, Shore A, minimum, ASTM D2240: 81.

g. Solids, by volume, ASTM D2697: 100 percent.

h. Bio-Based Content, Minimum: 60 percent.

i. Minimum Thickness, reinforced system: 32 mils (0.81 mm) wet.

j. Color: White.

B. Primers:

1. Primer for Asphaltic and Single-Ply Membranes: Water-based, polymer-modified quick-dry low odor primer.

a. Basis of design product: Tremco, AlphaGuard WB Primer.

b. Volatile Organic Compounds (VOC), maximum, ASTM D3960: 1 g/L.

c. Solids, by weight: 70 percent.

2. Primer for Non-Porous Surfaces: Single-part, water based primer to promote adhesion of urethanes to metals, PVC and other non-porous surfaces.

a. Basis of design product: Tremco, AlphaGuard M-Prime.

b. Volatile Organic Compounds (VOC), maximum, ASTM D3960: 22 g/L.

c. Nonvolatile Content, minimum, ASTM D2369: 5 percent.

d. Density at 77 deg F (25 deg C): 8.3 lb/gal (1kg/L).

3. Primer for Intercoat and Substrate Adhesion: Single-part, quick-drying primer to promote adhesion of urethane products to previous urethane coats and to other approved surfaces.

a. Basis of design product: Tremco, Geogard Primer.

b. Volatile Organic Compounds (VOC), maximum, ASTM D3960: 100 g/L.

c. Coverage Rate, 400 sq. ft/ gal. (10 m2/ L): 4 mils (0.10 mm) wet.

4. Single-component reactivating primer used to prepare aged bio-based urethane products.

a. Basis of design product: Tremco, BIO Prime.

b. Coverage Rate: 1/4 gal / 100 sq. ft. (0.1 L/m2) (4 wet mils) minimum.

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C. Fluid-Applied Roofing Reinforcing Fabric:

1. Polyester Reinforcing and Protection Fabric: 100 percent stitch-bonded mildew-resistant polyester fabric intended for reinforcement of compatible fluid-applied membranes and flashings and as a protection layer under pavers or stone aggregates.

a. Basis of design product: Tremco, Permafab.

b. Tensile Strength, Minimum, ASTM D1682: 50 lbf (23 kg) avg..

c. Elongation, Minimum, ASTM D1682: 60 percent.

d. Tear Strength, Minimum, ASTM D1117: 16 lbf (7.3 kg) avg..

e. Weight: 3 oz./sq. yd (102 g/sq. m).

2.5 AUXILIARY ROOFING REHABILITATION MATERIALS

A. General: Auxiliary materials recommended by roofing system manufacturer for intended use and compatible with existing roofing system and roofing coating system.

B. Seam Sealer: Waterproof seam and patching material compatible with applied coating.

1. Seam Sealer: Aromatic polyurethane sealer, single-component, high solids, moisture curing, formulated for compatibility and use with a variety of roofing and flashing substrates.

a. Basis of design product: Tremco, GEOGARD Seam Sealer.

b. Volatile Organic Compounds (VOC), maximum, ASTM D3960: 189 g/L.

c. Tensile Strength, ASTM D412: 270 psi (1860 kPa).

d. Tear Strength, ASTM D412: 35 pli (6.13 kNm).

e. Elongation, ASTM D412: 220 percent.

f. Color: Gray.

C. Seam and Detail Reinforcing Fabric:

1. Polyester Reinforcing Fabric: Heavy-weight, polyester fabric intended for reinforcement of compatible fluid-applied membranes.

a. Basis of design product: Tremco, Permafab MAX.

b. Elongation at Maximum Load, ASTM D5034: MD - 25 percent; XMD - 94 percent.

c. Peak Load, ASTM D5034: MD - 117 lbf/in (13.2 Nm) ; XMD 123 lbf/in (13.9 Nm).

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d. Tear Strength, ASTM D5587 (Trapezoid): MD - 73 lbs (33.1 kg) avg; XMD - 60 lbs (27.2 kg) avg.

e. Weight, ASTM D3776: 3.9 oz./100 sq. ft (48.8 g/sq. m).

D. Joint Sealant: Elastomeric joint sealant compatible with applied coating, with movement capability appropriate for application.

1. Joint Sealant, Polyurethane: ASTM C920, Type S, Grade NS, Class 50 single-component moisture curing sealant, formulated for compatibility and use in dynamic and static joints;

paintable.

a. Basis of design product: Tremco, TremSEAL Pro.

b. Volatile Organic Compounds (VOC), maximum, ASTM D3960: 40 g/L.

c. Hardness, Shore A, ASTM C661: 40.

d. Adhesion to Concrete, ASTM C794: 35 pli.

e. Tensile Strength, ASTM D412: 350 psi (2410 kPa).

f. Color: Closest match to substrate.

E. Miscellaneous Accessories: Provide miscellaneous accessories recommended by roofing system manufacturer.

PART 3 - EXECUTION

3.1 EXAMINATION

A. Examine existing roofing substrates, with Installer present, for compliance with requirements and for other conditions affecting application and performance of roof coatings

1. For the record, prepare written report, endorsed by Installer, listing conditions detrimental to performance.

2. Verify compatibility with and suitability of substrates.

3. Verify that substrates are visibly dry and free of moisture.

4. Verify that roofing membrane surfaces have adequately aged to enable proper bond with base coat.

5. Verify that roofing membrane is free of blisters, splits, open laps, indications of shrinkage, and puncture damage or other indications of impending roof system failure.

6. Commencing application of coatings indicates acceptance of surfaces and conditions.

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3.2 PREPARATION

A. Protect existing roofing system that is indicated not to be rehabilitated, and adjacent portions of building and building equipment.

1. Mask surfaces to be protected. Seal joints subject to infiltration by coating materials.

2. Limit traffic and material storage to areas of existing roofing membrane that have been protected.

3. Maintain temporary protection and leave in place until replacement roofing has been completed.

B. Shut down air intake equipment in the vicinity of the Work in coordination with the Owner. Cover air intake louvers before proceeding with coating work that could affect indoor air quality or activate smoke detectors in the ductwork.

1. Verify that rooftop utilities and service piping affected by the Work have been shut off before commencing Work.

C. Maintain roof drains in functioning condition to ensure roof drainage at end of each workday.

Prevent debris from entering or blocking roof drains and conductors. Use roof-drain plugs specifically designed for this purpose. Remove roof-drain plugs at end of each workday, when no work is taking place, or when rain is forecast.

1. Do not permit water to enter into or under existing membrane roofing system components that are to remain.

3.3 ROOFING COATING PREPARATION

A. Removal of Wet Insulation: Remove portions of roofing membrane with underlying wet insulation. Remove wet insulation, fill in tear-off areas to match existing insulation and membrane, and prepare patched membrane for application of roof coating as specified below.

B. Repair of Ponding Areas: Repair areas indicated as ponding areas or areas of inadequate drainage by removing roof membrane, adding additional insulation as required to provide minimum slopes to drain required by roofing rehabilitation coating manufacturer, and replace membrane with material matching existing. Submit photographic report indicating compliance.

C. Membrane Surface Preparation:

1. Remove walkway pads and pavers from roofing membrane. Discard damaged pavers.

2. Remove blisters, ridges, buckles, roofing membrane fastener buttons projecting above the membrane, and other substrate irregularities from existing roofing membrane that would inhibit application of uniform, waterproof coating.

3. Broom clean existing substrate.

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4. Substrate Cleaning: Clean substrate in accordance with requirements of Division 07 Section "Maintenance Cleaning of Membrane Roofing."

5. Verify that existing substrate is dry before proceeding with application of coating. Spot check substrates with an electrical capacitance moisture-detection meter.

6. Verify adhesion of new products.

D. Existing Flashing and Detail Preparation: Repair flashings, gravel stops, copings, and other roof-related sheet metal and trim elements. Reseal joints, replace loose or missing fasteners, and replace components where required to leave in a watertight condition.

1. Do not damage metal counterflashings that are to remain. Replace metal counterflashings damaged during removal with counterflashings of same metal, weight or thickness, and finish.

2. Roof Drains: Remove drain strainer and clamping ring. Grind metal surfaces down to clean, bare, metal.

E. Surface Priming: Prime surfaces to receive fluid-applied coating using coating manufacturer's recommended product for surface material. Apply at application rate recommended by manufacturer.

1. Ensure primer does not puddle and substrate has complete coverage.

2. Allow to cure completely prior to application of coating.

F. Membrane Seam Reinforcement: Reinforce membrane seams using seam sealer mastic and reinforcing fabric overlapping onto field of existing membrane not less than width required by roof coating manufacturer.

3.4 FLUID-APPLIED FLASHING APPLICATION

A. Fluid-Applied Flashing and Detail Base Coat Application: Complete base coat and fabric reinforcement at parapets, curbs, penetrations, and drains prior to application of field of fluid-applied membrane. Apply base coat in accordance with manufacturer's written instructions.

1. Apply base coat on prepared and primed surfaces and spread coating evenly. Extend coating minimum of 8 inches (200 mm) up vertical surfaces and 4 inches (100 mm) onto horizontal surfaces.

2. Back roll to achieve minimum coating thickness indicated on Part 2 product listing, unless greater thickness is recommended by manufacturer; verify thickness of base coat as work progresses.

3. Reinforcing Fabric: Embed fabric reinforcement into wet base coat. Lap adjacent flashing pieces of fabric minimum 3 inches (75 mm) along edges and 6 inches (150 mm) at end laps.

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a. Roll surface of fabric reinforcing to completely embed and saturate fabric. Leave finished base coat with fabric free of pin holes, voids, or openings.

4. Roof Drains: Install base coat onto surrounding membrane surface and metal drain bowl flange. Install target piece of fabric reinforcement immediately into wet base coat and roll to fully embed and saturate fabric. Reinstall clamping ring and strainer following application of top coat. Replace broken drain ring clamping bolts.

3.5 FLUID-APPLIED MEMBRANE APPLICATION

A. Fluid-Applied Membrane Base Coat: Apply base coat to field of membrane in accordance with manufacturer's written instructions.

1. Apply base coat on prepared and primed surfaces and spread coating evenly.

2. Back roll to achieve minimum coating thickness indicated on Part 2 product listing, unless greater thickness is recommended by manufacturer; verify thickness of base coat as work progresses.

B. Fluid-Applied Membrane Top Coat: Apply top coat to field of membrane and flashings uniformly in a complete, continuous installation.

1. Allow base coat to cure prior to application of top coat.

2. Following curing of base coat and prior to application of top coat, sand raised or exposed edges of fabric reinforcement.

3. Prime base coat prior to application of top coat if top coat is not applied within 72 hours of the base coat application, using manufacturer's recommended primer.

4. Apply top coat extending coating up vertical surfaces and out onto horizontal surfaces.

Install top coat over field base coat and spread coating evenly.

5. Back roll to achieve minimum coating thickness indicated on Part 2 product listing, unless greater thickness is recommended by manufacturer; verify thickness of base coat as work progresses.

6. Avoid foot traffic on new fluid-applied membrane for a minimum of 24 hours.

3.6 FIELD QUALITY CONTROL

A. Roofing Inspector: Owner will engage a qualified roofing inspector to perform roof tests and inspections and to prepare test reports.

B. Roofing Inspector: Contractor shall engage a qualified roofing inspector for a minimum of 3 full-time days on site, per 40-hour crew week, to perform roof tests and inspections and to prepare start up, interim, and final reports. Roofing Inspector's quality assurance inspections shall comply with criteria established in Quality Control and Quality-assurance Guidelines for the Application of Membrane Roof Systems."

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C. Roof Inspection: Contractor shall engage roofing system manufacturer's technical personnel to inspect roofing installation, and submit report. Notify Owner's Consultant 48 hours in advance of dates and times of inspections. Inspect work as follows:

1. Upon completion of preparation of first component of work, prior to application of re-coating materials.

2. Following application of re-coating to flashings and application of base coat to field of roof.

3. Upon completion of re-coating but prior to re-installation of other roofing components.

D. Repair fluid-applied membrane where test inspections indicate that they do not comply with specified requirements.

E. Arrange for additional inspections, at Contractor's expense, to verify compliance of replaced or additional work with specified requirements.

3.7 PROTECTING AND CLEANING

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

B. Correct deficiencies in or remove coating that does not comply with requirements, repair substrates, and reapply coating.

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

END OF SECTION 070150.74

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