ADDENDUM NO_ 2 _ December 23_ 2023.pdf

3308 Country Club Road Valdosta, Georgia 31605

Mail: PO Box 5146 Valdosta, Georgia 31603

P. 229.242.2551 F. 229.244.8358 www.mccallinc.com

December 23, 2023

GREENE COUNTY DETENTION CENTER RENOVATION

ADDENDUM NO. 2

Bidders are advised that the requirements of the plans and specifications entitled “Greene County Detention Center Renovation”, dated 10-30-2023, are amended as follows and this addendum is made part of the Contract Documents. Products supplied by manufacturers listed herein as approved manufacturers shall be equal in all respects to those specified.

Item No. 1 Replace drawing sheets E502 thru E510 with the attached sheet E502 thru E511 (new drawings and sheet E511 added).

Item No. 2 See the attached attendance record from the mandatory pre-proposal conference.

Item No. 3 Replace specification section 070150 with the attached.

Item No. 4 To specification section 282300, 1.05, D, add the company SWC as an ESCC.

END OF ADDENDUM

ASHLEY

M

PAULK

NO. 24014

PROFESSIONAL

I I I

GEORGIA

REGISTERED

ENGINEER

10 30 23

ELECTRICAL ENGINEERS

1201 BROAD ST., SUITE 1-A

AUGUSTA, GA 30901

PH: (706) 724-3551

FAX: (706) 724-8507

EDC PROJECT #:

SHEET NO:

FILE NO:

PROJECT NO:

APPROVED:

DRAWN:

SCALE:

ISSUE:

DATE:

SHEET TITLE:

PROJECT TITLE:

ARCHITECT:

SEAL:

CONSULTANT:

AS SHOWN

2014 McCALL & ASSOCIATES, INC.C

1 72 3 4 5 6

1 72 3 4 5 6

A

B

E

C

D

A

B

E

C

D

Physical Address:

3308 Country Club Rd.

Valdosta, GA 31605

Mailing Address:

P.O. Box 5146

Valdosta, GA 31603 Phone: 229.242.2551

Fax: 229.244.8358 www.mccallinc.com

These Contract Documents are the exclusive property of McCall and Associates, Inc. Any reproduction, modidication, disclosure and/ or use of these materials ( or any portion of them) without McCall and Associstes, Inc. prior written consent is strictly prohibited.

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LOW VOLTAGE SYSTEMS -

NOTES AND SYMBOL

LEGEND

GREENE COUNTY

DETENTION CENTER

RENOVATION

MAP

ALG/JK

# Description DATE Addendum 2 12/20/23

PAULK

NO. 24014

PROFESSIONAL

I I I

GEORGIA

REGISTERED

ENGINEER

10 30 23

ELECTRICAL ENGINEERS

1201 BROAD ST., SUITE 1-A

AUGUSTA, GA 30901

PH: (706) 724-3551

FAX: (706) 724-8507

EDC PROJECT #:

SHEET NO:

FILE NO:

PROJECT NO:

APPROVED:

DRAWN:

SCALE:

ISSUE:

DATE:

SHEET TITLE:

PROJECT TITLE:

ARCHITECT:

SEAL:

CONSULTANT:

AS SHOWN

2014 McCALL & ASSOCIATES, INC.C

1 72 3 4 5 6

1 72 3 4 5 6

A

B

E

C

D

A

B

E

C

D

Physical Address:

3308 Country Club Rd.

Valdosta, GA 31605

Mailing Address:

P.O. Box 5146

Valdosta, GA 31603 Phone: 229.242.2551

Fax: 229.244.8358 www.mccallinc.com

These Contract Documents are the exclusive property of McCall and Associates, Inc. Any reproduction, modidication, disclosure and/ or use of these materials ( or any portion of them) without McCall and Associstes, Inc. prior written consent is strictly prohibited.

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LOW VOLTAGE SYSTEMS -

SITE DEVICE PLAN

GREENE COUNTY

DETENTION CENTER

RENOVATION

MAP

ALG/JK

PAULK

NO. 24014

PROFESSIONAL

I I I

GEORGIA

REGISTERED

ENGINEER

10 30 23

ELECTRICAL ENGINEERS

1201 BROAD ST., SUITE 1-A

AUGUSTA, GA 30901

PH: (706) 724-3551

FAX: (706) 724-8507

EDC PROJECT #:

SHEET NO:

FILE NO:

PROJECT NO:

APPROVED:

DRAWN:

SCALE:

ISSUE:

DATE:

SHEET TITLE:

PROJECT TITLE:

ARCHITECT:

SEAL:

CONSULTANT:

AS SHOWN

2014 McCALL & ASSOCIATES, INC.C

1 72 3 4 5 6

1 72 3 4 5 6

A

B

E

C

D

A

B

E

C

D

Physical Address:

3308 Country Club Rd.

Valdosta, GA 31605

Mailing Address:

P.O. Box 5146

Valdosta, GA 31603 Phone: 229.242.2551

Fax: 229.244.8358 www.mccallinc.com

These Contract Documents are the exclusive property of McCall and Associates, Inc. Any reproduction, modidication, disclosure and/ or use of these materials ( or any portion of them) without McCall and Associstes, Inc. prior written consent is strictly prohibited.

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LOW VOLTAGE SYSTEMS -

DEVICE PLAN

GREENE COUNTY

DETENTION CENTER

RENOVATION

MAP

ALG/JK

PAULK

NO. 24014

PROFESSIONAL

I I I

GEORGIA

REGISTERED

ENGINEER

10 30 23

ELECTRICAL ENGINEERS

1201 BROAD ST., SUITE 1-A

AUGUSTA, GA 30901

PH: (706) 724-3551

FAX: (706) 724-8507

EDC PROJECT #:

SHEET NO:

FILE NO:

PROJECT NO:

APPROVED:

DRAWN:

SCALE:

ISSUE:

DATE:

SHEET TITLE:

PROJECT TITLE:

ARCHITECT:

SEAL:

CONSULTANT:

AS SHOWN

2014 McCALL & ASSOCIATES, INC.C

1 72 3 4 5 6

1 72 3 4 5 6

A

B

E

C

D

A

B

E

C

D

Physical Address:

3308 Country Club Rd.

Valdosta, GA 31605

Mailing Address:

P.O. Box 5146

Valdosta, GA 31603 Phone: 229.242.2551

Fax: 229.244.8358 www.mccallinc.com

These Contract Documents are the exclusive property of McCall and Associates, Inc. Any reproduction, modidication, disclosure and/ or use of these materials ( or any portion of them) without McCall and Associstes, Inc. prior written consent is strictly prohibited.

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LOW VOLTAGE SYSTEMS -

LARGE SCALE EQUIPMENT

LAYOUT

GREENE COUNTY

DETENTION CENTER

RENOVATION

MAP

ALG/JK

PAULK

NO. 24014

PROFESSIONAL

I I I

GEORGIA

REGISTERED

ENGINEER

10 30 23

ELECTRICAL ENGINEERS

1201 BROAD ST., SUITE 1-A

AUGUSTA, GA 30901

PH: (706) 724-3551

FAX: (706) 724-8507

EDC PROJECT #:

SHEET NO:

FILE NO:

PROJECT NO:

APPROVED:

DRAWN:

SCALE:

ISSUE:

DATE:

SHEET TITLE:

PROJECT TITLE:

ARCHITECT:

SEAL:

CONSULTANT:

AS SHOWN

2014 McCALL & ASSOCIATES, INC.C

1 72 3 4 5 6

1 72 3 4 5 6

A

B

E

C

D

A

B

E

C

D

Physical Address:

3308 Country Club Rd.

Valdosta, GA 31605

Mailing Address:

P.O. Box 5146

Valdosta, GA 31603 Phone: 229.242.2551

Fax: 229.244.8358 www.mccallinc.com

These Contract Documents are the exclusive property of McCall and Associates, Inc. Any reproduction, modidication, disclosure and/ or use of these materials ( or any portion of them) without McCall and Associstes, Inc. prior written consent is strictly prohibited.

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LOW VOLTAGE SYSTEMS -

LARGE SCALE EQUIPMENT

LAYOUTS

GREENE COUNTY

DETENTION CENTER

RENOVATION

MAP

ALG/JK

PAULK

NO. 24014

PROFESSIONAL

I I I

GEORGIA

REGISTERED

ENGINEER

10 30 23

ELECTRICAL ENGINEERS

1201 BROAD ST., SUITE 1-A

AUGUSTA, GA 30901

PH: (706) 724-3551

FAX: (706) 724-8507

EDC PROJECT #:

SHEET NO:

FILE NO:

PROJECT NO:

APPROVED:

DRAWN:

SCALE:

ISSUE:

DATE:

SHEET TITLE:

PROJECT TITLE:

ARCHITECT:

SEAL:

CONSULTANT:

AS SHOWN

2014 McCALL & ASSOCIATES, INC.C

1 72 3 4 5 6

1 72 3 4 5 6

A

B

E

C

D

A

B

E

C

D

Physical Address:

3308 Country Club Rd.

Valdosta, GA 31605

Mailing Address:

P.O. Box 5146

Valdosta, GA 31603 Phone: 229.242.2551

Fax: 229.244.8358 www.mccallinc.com

These Contract Documents are the exclusive property of McCall and Associates, Inc. Any reproduction, modidication, disclosure and/ or use of these materials ( or any portion of them) without McCall and Associstes, Inc. prior written consent is strictly prohibited.

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LOW VOLTAGE SYSTEMS -

EQUIPMENT ELEVATIONS

GREENE COUNTY

DETENTION CENTER

RENOVATION

MAP

ALG/JK

PAULK

NO. 24014

PROFESSIONAL

I I I

GEORGIA

REGISTERED

ENGINEER

10 30 23

ELECTRICAL ENGINEERS

1201 BROAD ST., SUITE 1-A

AUGUSTA, GA 30901

PH: (706) 724-3551

FAX: (706) 724-8507

EDC PROJECT #:

SHEET NO:

FILE NO:

PROJECT NO:

APPROVED:

DRAWN:

SCALE:

ISSUE:

DATE:

SHEET TITLE:

PROJECT TITLE:

ARCHITECT:

SEAL:

CONSULTANT:

AS SHOWN

2014 McCALL & ASSOCIATES, INC.C

1 72 3 4 5 6

1 72 3 4 5 6

A

B

E

C

D

A

B

E

C

D

Physical Address:

3308 Country Club Rd.

Valdosta, GA 31605

Mailing Address:

P.O. Box 5146

Valdosta, GA 31603 Phone: 229.242.2551

Fax: 229.244.8358 www.mccallinc.com

These Contract Documents are the exclusive property of McCall and Associates, Inc. Any reproduction, modidication, disclosure and/ or use of these materials ( or any portion of them) without McCall and Associstes, Inc. prior written consent is strictly prohibited.

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LOW VOLTAGE - SYSTEM

RISER

GREENE COUNTY

DETENTION CENTER

RENOVATION

MAP

ALG/JK

PAULK

NO. 24014

PROFESSIONAL

I I I

GEORGIA

REGISTERED

ENGINEER

10 30 23

ELECTRICAL ENGINEERS

1201 BROAD ST., SUITE 1-A

AUGUSTA, GA 30901

PH: (706) 724-3551

FAX: (706) 724-8507

EDC PROJECT #:

SHEET NO:

FILE NO:

PROJECT NO:

APPROVED:

DRAWN:

SCALE:

ISSUE:

DATE:

SHEET TITLE:

PROJECT TITLE:

ARCHITECT:

SEAL:

CONSULTANT:

AS SHOWN

2014 McCALL & ASSOCIATES, INC.C

1 72 3 4 5 6

1 72 3 4 5 6

A

B

E

C

D

A

B

E

C

D

Physical Address:

3308 Country Club Rd.

Valdosta, GA 31605

Mailing Address:

P.O. Box 5146

Valdosta, GA 31603 Phone: 229.242.2551

Fax: 229.244.8358 www.mccallinc.com

These Contract Documents are the exclusive property of McCall and Associates, Inc. Any reproduction, modidication, disclosure and/ or use of these materials ( or any portion of them) without McCall and Associstes, Inc. prior written consent is strictly prohibited.

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LOW VOLTAGE -

INTERCOM SYSTEM RISER

GREENE COUNTY

DETENTION CENTER

RENOVATION

MAP

ALG/JK

PAULK

NO. 24014

PROFESSIONAL

I I I

GEORGIA

REGISTERED

ENGINEER

10 30 23

ELECTRICAL ENGINEERS

1201 BROAD ST., SUITE 1-A

AUGUSTA, GA 30901

PH: (706) 724-3551

FAX: (706) 724-8507

EDC PROJECT #:

SHEET NO:

FILE NO:

PROJECT NO:

APPROVED:

DRAWN:

SCALE:

ISSUE:

DATE:

SHEET TITLE:

PROJECT TITLE:

ARCHITECT:

SEAL:

CONSULTANT:

AS SHOWN

2014 McCALL & ASSOCIATES, INC.C

1 72 3 4 5 6

1 72 3 4 5 6

A

B

E

C

D

A

B

E

C

D

Physical Address:

3308 Country Club Rd.

Valdosta, GA 31605

Mailing Address:

P.O. Box 5146

Valdosta, GA 31603 Phone: 229.242.2551

Fax: 229.244.8358 www.mccallinc.com

These Contract Documents are the exclusive property of McCall and Associates, Inc. Any reproduction, modidication, disclosure and/ or use of these materials ( or any portion of them) without McCall and Associstes, Inc. prior written consent is strictly prohibited.

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LOW VOLTAGE - IP VIDEO

SYSTEM RISER

GREENE COUNTY

DETENTION CENTER

RENOVATION

MAP

ALG/JK

PAULK

NO. 24014

PROFESSIONAL

I I I

GEORGIA

REGISTERED

ENGINEER

10 30 23

ELECTRICAL ENGINEERS

1201 BROAD ST., SUITE 1-A

AUGUSTA, GA 30901

PH: (706) 724-3551

FAX: (706) 724-8507

EDC PROJECT #:

SHEET NO:

FILE NO:

PROJECT NO:

APPROVED:

DRAWN:

SCALE:

ISSUE:

DATE:

SHEET TITLE:

PROJECT TITLE:

ARCHITECT:

SEAL:

CONSULTANT:

AS SHOWN

2014 McCALL & ASSOCIATES, INC.C

1 72 3 4 5 6

1 72 3 4 5 6

A

B

E

C

D

A

B

E

C

D

Physical Address:

3308 Country Club Rd.

Valdosta, GA 31605

Mailing Address:

P.O. Box 5146

Valdosta, GA 31603 Phone: 229.242.2551

Fax: 229.244.8358 www.mccallinc.com

These Contract Documents are the exclusive property of McCall and Associates, Inc. Any reproduction, modidication, disclosure and/ or use of these materials ( or any portion of them) without McCall and Associstes, Inc. prior written consent is strictly prohibited.

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LOW VOLTAGE - DEVICE

ROUGH-IN DETAILS

GREENE COUNTY

DETENTION CENTER

RENOVATION

MAP

ALG/JK

GREENE COUNTY DETENTION CENTER RENOVATION

GREENSBORO, GA

PREPARATION FOR REROOFING 070150.19 - 1

SECTION 070150.19 - PREPARATION FOR REROOFING

PART 1 - GENERAL

1.1 SUMMARY

A. The Work of This Section Includes:

1. Full roof tear-off.

2. Temporary roofing.

3. Roof re-cover preparation.

4. Disposal.

1.2 DEFINITIONS

A. EPS: Molded (expanded) polystyrene.

B. Full Roof Tear-off: Removal of existing roofing system down to existing concrete roof deck.

C. Roofing Terminology: Definitions in ASTM D1079 and glossary of NRCA's "The NRCA Roofing Manual: Membrane Roof Systems" apply to work of this Section.

1.3 PREINSTALLATION MEETINGS

A. Preliminary Roofing Conference: Before starting removal Work, conduct conference at Project site.

1. Meet with Owner, Architect, Owner's insurer if applicable, testing and inspecting agency representative, roofing Installer, and installers whose work interfaces with or affects roofing, including installers of roof accessories and roof-mounted equipment.

2. Review methods and procedures related to roofing tear-off, including, but not limited to, the following:

a. Reroofing preparation, including roofing system manufacturer's written instructions.

b. Temporary protection requirements for existing roofing system components that are to remain.

c. Existing roof drains and roof drainage during each stage of reroofing, and roof-drain plugging and plug removal.

d. Construction schedule and availability of materials, Installer's personnel, equipment, and facilities needed to avoid delays.

e. Existing roof deck conditions requiring Architect notification.

f. Existing roof deck removal procedures and Owner notifications.

g. Condition and acceptance of existing roof deck and base flashing substrate for reuse.

h. Structural loading limitations of roof deck during reroofing.

PREPARATION FOR REROOFING 070150.19 - 2

i. Base flashings, special roofing details, drainage, penetrations, equipment curbs, and condition of other construction that affect reroofing.

j. HVAC shutdown and sealing of air intakes.

k. Shutdown of fire-suppression, -protection, and -alarm and -detection systems.

l. Asbestos removal and discovery of asbestos-containing materials.

m. Governing regulations and requirements for insurance and certificates if applicable.

n. Existing conditions that may require Architect notification before proceeding.

1.4 ACTION SUBMITTALS

A. Product Data: For each type of product.

B. Temporary Roofing Submittal: Product data and description of temporary roofing system.

1. If temporary roof remains in place, include surface preparation requirements needed to receive permanent roof, and submit a letter from roofing manufacturer stating acceptance of the temporary roof and that its inclusion does not adversely affect the new roofing system's resistance to fire and wind per FM I-90.

1.5 INFORMATIONAL SUBMITTALS

A. Qualification Data: For Installer.

1. Include certificate that Installer is approved by warrantor of existing roofing system.

2. Include certificate that Installer is licensed to perform asbestos abatement.

B. Field Test Reports: Fastener pull-out test report.

C. Photographs or Video: Show existing conditions of adjoining construction and site improvements, including exterior and interior finish surfaces, that might be misconstrued as having been damaged by reroofing operations.

1. Submit before Work begins.

D. Landfill Records: Indicate receipt and acceptance of demolished roofing materials and hazardous wastes, such as asbestos-containing materials, by a landfill facility licensed to accept them.

1.6 CLOSEOUT SUBMITTALS

A. Certified statement from Siplast stating that existing roof warranty has not been affected by Work performed under this Section.

1.7 QUALITY ASSURANCE

A. Installer Qualifications: Siplast approved roofing contractors.

PREPARATION FOR REROOFING 070150.19 - 3

B. Regulatory Requirements:

1. Comply with governing EPA notification regulations before beginning roofing removal.

2. Comply with hauling and disposal regulations of authorities having jurisdiction.

1.8 FIELD CONDITIONS

A. Existing Roofing System: 45 mil TPO loose laid over EPDM membrane loose laid over tapered EPS insulation.

1. Under existing roof insulation are electrical conduits that must remain undisturbed.

B. Retain, revise, or delete paragraphs in this article to suit Project. Insert other limitations if necessary, such as when adjacent floors are occupied.

C. Owner will occupy portions of building immediately below reroofing area.

1. Conduct reroofing so Owner's operations are not disrupted.

2. Provide Owner with not less than 72 hours' written notice of activities that may affect

Owner's operations.

3. Coordinate work activities daily with Owner so Owner has adequate advance notice to place protective dust and water-leakage covers over sensitive equipment and furnishings, shut down HVAC and fire-alarm or -detection equipment if needed, and evacuate occupants from below work area.

4. Before working over structurally impaired areas of deck, notify Owner to evacuate occupants from below affected area.

a. Verify that occupants below work area have been evacuated before proceeding with work over impaired deck area.

D. Protect building to be reroofed, adjacent buildings, walkways, site improvements, exterior plantings, and landscaping from damage or soiling from reroofing operations.

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

F. Conditions existing at time of inspection for bidding will be maintained by Owner as far as practical.

1. A roof moisture survey of existing roofing system is available for Contractor's reference.

2. The results of an analysis of test cores from existing roofing system are available for

Contractor's reference.

3. Construction Drawings for existing roofing system are provided for Contractor's convenience and information, but they are not a warranty of existing conditions. They are intended to supplement rather than serve in lieu of Contractor's own investigations.

Contractor is responsible for conclusions derived from existing documents.

G. Limit construction loads on existing roof areas to remain, and existing roof areas scheduled to be reroofed to 20 P.S.F.

PREPARATION FOR REROOFING 070150.19 - 4

H. Weather Limitations: Proceed with reroofing preparation only when existing and forecasted weather conditions permit Work to proceed without water entering existing roofing system or building.

1. Remove only as much roofing in one day as can be made watertight in the same day.

I. Hazardous Materials:

1. It is not expected that hazardous materials, such as asbestos-containing materials, will be encountered in the Work.

a. Hazardous materials will be removed by Owner before start of the Work.

b. Existing roof will be left no less watertight than before removal.

2. If materials suspected of containing hazardous materials are encountered, do not disturb;

immediately notify Architect and Owner.

a. Hazardous materials will be removed by Owner under a separate contract.

3. A report on the presence of hazardous materials is on file for review and use. Examine report to become aware of locations where hazardous materials are present.

a. Hazardous material remediation is specified elsewhere in the Contract Documents.

b. Do not disturb hazardous materials or items suspected of containing hazardous materials except according to procedures specified elsewhere in the Contract Documents.

c. Coordinate reroofing preparation with hazardous material remediation to prevent water from entering existing roofing system or building.

1.9 WARRANTY

A. Manufacturer’s Guarantee: Provides that the Manufacturer will repair leaks through the covered roofing materials due to material or workmanship defects, subject to certain exclusions, during the specified time period. Refer to guarantee for complete coverage and restrictions.

1. The Guarantee shall provide coverage for the roofing membrane, base flashings, roof insulation, fasteners, insulation adhesive, and cover panel. The Guarantee shall be non-prorated and contain no deductibles or limitations on coverage amount.

2. Guarantee Period: 20 years from date of Substantial Completion.

B. Special Project Warranty: Submit roofing contractor’s warranty signed by the Installer, including all components of the roofing and insulation system for the following warran-ty period:

1. Warranty Period: 2 years from date of Substantial Completion.

PREPARATION FOR REROOFING 070150.19 - 5

PART 2 - PRODUCTS

2.1 TEMPORARY ROOFING MATERIALS

A. Design and selection of materials for temporary roofing are Contractor's responsibilities

B. Self-Adhering Sheet Vapor Retarder: ASTM D1970 polyethylene film laminated to layer of rubberized asphalt adhesive with a slip-resisting surface and release paper backing, having a minimum thickness of 31-mil- (0.78-mm-) and a maximum permeance rating of 0.03 perm.

C. 1. Siplast SA Vapor Retarder XL by Siplast, Inc.

D. Asphalt Primer: ASTM D41/D41M.

2.2 INFILL AND REPLACEMENT MATERIALS

A. Wood blocking, curbs, and nailers shall be pressure treated.

B. Parapet Sheathing:

1. Pressure-preservative-treated plywood wall sheathing, 19/32 inch (15 mm) thick.

C. Fasteners: Factory-coated steel fasteners with metal or plastic plates listed in FM Approvals' RoofNav, and acceptable to new roofing system manufacturer.

2.3 AUXILIARY REROOFING MATERIALS

A. General: Use auxiliary reroofing preparation materials recommended by roofing system manufacturer for intended use and compatible with components of existing and new roofing system.

PART 3 - EXECUTION

3.1 PREPARATION

A. Protection of In-Place Conditions:

1. Protect existing roofing system that is not to be reroofed.

2. Protect existing electrical conduit atop roof deck.

3. Any mechanical fasteners through roof deck shall be removed entirely or cut off and ground smooth with deck to thereby avoid any damage to new vapor retarder.

4. Loosely lay 1-inch- (25-mm-) minimum thick, EPS insulation over existing roofing in areas not to be reroofed.

a. Loosely lay 15/32-inch (12-mm) plywood or OSB panels over EPS. Extend EPS past edges of plywood or OSB panels a minimum of 1 inch (25 mm).

PREPARATION FOR REROOFING 070150.19 - 6

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

6. Maintain temporary protection and leave in place until replacement roofing has been completed. Remove temporary protection on completion of reroofing.

7. Comply with requirements of existing roof system manufacturer's warranty requirements.

B. Seal or isolate windows that may be exposed to airborne substances created in removal of existing materials.

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

D. Test existing roof drains to verify that they are not blocked or restricted.

1. Immediately notify Architect of any blockages or restrictions.

E. Coordinate with Owner to shut down air-intake equipment in the vicinity of the Work.

1. Cover air-intake louvers before proceeding with reroofing work that could affect indoor air quality or activate smoke detectors in the ductwork.

F. During removal operations, have sufficient and suitable materials on-site to facilitate rapid installation of temporary protection in the event of unexpected rain.

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

1. Prevent debris from entering or blocking roof drains and conductors.

a. Use roof-drain plugs specifically designed for this purpose.

b. Remove roof-drain plugs at end of each workday, when no work is taking place, or when rain is forecast.

2. If roof drains are temporarily blocked or unserviceable due to roofing system removal or partial installation of new roofing system, provide alternative drainage method to remove water and eliminate ponding.

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

3.2 ROOF TEAR-OFF

A. Notify Owner each day of extent of roof tear-off proposed for that day and obtain authorization to proceed.

B. Lower removed roofing materials to ground and onto lower roof levels, using dust-tight chutes or other acceptable means of removing materials from roof areas.

C. Full Roof Tear-off: Remove existing roofing and other roofing system components down to the existing concrete roof deck.

1. Remove substrate board, vapor retarder, roof insulation and cover board.

2. Remove base flashings and counter flashings.

3. Remove perimeter edge flashing and gravel stops.

PREPARATION FOR REROOFING 070150.19 - 7

4. Remove copings.

5. Remove expansion-joint covers.

6. Remove flashings at pipes, curbs, mechanical equipment, and other penetrations.

7. Remove roof drains indicated on Drawings to be removed.

8. Remove wood blocking, curbs, and nailers.

9. Bitumen and felts that are firmly bonded to concrete decks are permitted to remain if felts are dry.

a. Remove unadhered bitumen, unadhered felts, and wet felts.

10. Remove excess asphalt from steel deck.

a. A maximum of 15 lb/100 sq. ft. (0.72 kg/sq. m) of asphalt is permitted to remain on steel decks.

11. Remove fasteners from deck or cut fasteners off slightly above deck surface.

12. Inspect wood blocking, curbs, and nailers for deterioration and damage.

a. If wood blocking, curbs, or nailers have deteriorated, immediately notify Architect.

13. Bitumen and felts that are firmly bonded to concrete decks are permitted to remain if felts are dry.

a. Remove unadhered bitumen, unadhered felts, and wet felts.

3.3 DECK PREPARATION

A. Inspect deck after tear-off of roofing system.

B. 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 Architect.

1. Do not proceed with installation until directed by Architect.

C. If deck surface is unsuitable for receiving new roofing or if structural integrity of deck is suspect, immediately notify Architect.

1. Do not proceed with installation until directed by Architect.

D. Provide additional deck securement as indicated on Drawings.

3.4 TEMPORARY ROOFING

A. Install approved temporary roofing over area to be reroofed.

3.5 ROOF RE-COVER PREPARATION

Manufacturer: A roof system by the following manufacturer is approved for application.

1. Siplast, Inc.

1.1 ROOFING MEMBRANE SHEET MATERIALS

PREPARATION FOR REROOFING 070150.19 - 8

Roof Membrane: A roof membrane consisting of one ply of a prefabricated, polyester scrim-reinforced, polyvinyl chloride (PVC) membrane applied over a prepared sub-strate. The roof membrane shall meet or exceed to the minimum criteria established by ASTM D4434 Standard Specification for Poly(Vinyl Chloride) Sheet Roofing (Type III). The minimum thickness of the roof membrane shall be 60 mils (1.52 mm), as es-tablished by ASTM D751 Standard Test Method for Coated Fabrics. The minimum thickness of the roof membrane over the reinforcement scrim shall be 27 mils (0.685 mm), as established by ASTM D7635 Standard Test Method for Measurement of Thickness of Coatings Over Fabric Reinforcement.

1. 60-mil Parasolo PVC by Siplast, Inc.

1.2 BASE FLASHING SHEET MATERIALS

A. Flashing Membrane: A flashing membrane consisting of one ply of a prefabricated, pol-yester scrim-reinforced, polyvinyl chloride (PVC) membrane applied over a prepared substrate. The flashing membrane shall meet or exceed to the minimum criteria estab-lished by ASTM D4434 Standard Specification for Poly(Vinyl Chloride) Sheet Roofing (Type III). The minimum thickness of the flashing membrane shall be 60 mils (1.52 mm), as established by ASTM D751 Standard Test Method for Coated Fabrics. The min-imum thickness of the flashing membrane over the reinforcement scrim shall be 27 mils (0.685 mm), as established by ASTM D7635 Standard Test Method for Measurement of Thickness of Coatings Over Fabric Reinforcement.

1. 60-mil Parasolo PVC by Siplast, Inc.

B. Liquid Flashing System: The specified liquid flashing system shall consist of a catalyzed PMMA-based membrane fully reinforced with a non-woven polyester fleece that is in-stalled over a prepared substrate.

1. Parapro 123 Flashing by Siplast, Inc.

1.3 PRIMERS

A. Primer for Self-Adhesive Membranes: Primer for self-adhesive membranes shall be a single component, water-based resinous primer formulated to condition masonry, wood, plywood, concrete, asphaltic, and gypsum surfaces to facilitate adhesion of self-adhesive membranes.

1. TA-119 Primer by Siplast, Inc.

1.4 AUXILIARY ROOFING MATERIALS

A. Finish and Flashing Membrane Adhesive for Smooth Membrane: A solvent-based, low

VOC, rubberized adhesive designed for bonding PVC single-ply roofing membranes and flashings to various roofing substrates.

1. Parasolo PVC Bonding Adhesive by Siplast, Inc.

B. Sealant: A solvent-based, UV resistant synthetic elastomeric sealant for the completion of details.

1. Parasolo Flexseal Caulk Grade

C. Water Block: A single component butyl-based high viscosity sealant for sealing the flashing membrane to the substrate behind exposed termination bars and at drain flanges.

1. Parasolo Water Block Sealant

PREPARATION FOR REROOFING 070150.19 - 9

D. Membrane Conditioner/Cleaner: A solvent-based agent used to clean exposed or con-taminated seams prior to heat welding to remove any residue that may compromise lap welding.

1. Parasolo Membrane Conditioner by Siplast, Inc.

E. Membrane Separation Pad (required only if asphaltic residue is present): A non-woven polyester mat, having a weight of 3 oz./yd. (85 g/m2), used beneath mechanically at-tached single-ply membrane in re-cover applications or between single-ply flashing membrane and flashing substrates contaminated with asphalt residue.

1. Parasolo Poly Separation Layer by Siplast, Inc.

F. PVC Membrane Flashing Accessories

1. Outside Corner Flashing: A molded PVC membrane having a thickness of 0.075 inch

(1.9 mm), designed to accommodate outside corners of base and curb flashing de-tails. The molded flashing component shall be hot-air welded directly to the speci-fied PVC membrane.

> Parasolo PVC Outside Corner by Siplast, Inc.

2. Inside Corner Flashing: A molded PVC membrane designed to accommodate inside corners of base and curb flashing details. The molded flashing component shall be hot-air welded directly to the specified PVC membrane.

> Parasolo PVC Inside Corner by Siplast, Inc.

3. Fluted Corner Flashing: A molded PVC membrane having a thickness of 0.055 inch (1.4 mm), designed to accommodate corners of base and curb flashing details having dimensions that cannot be addressed using standard pre-formed PVC inside or out-side corner flashing components. The molded flashing component shall be hot-air welded directly to the specified PVC membrane.

> Parasolo PVC Fluted Corner by Siplast, Inc.

4. Flashing Strip: An 8-inch wide molded PVC membrane strip having a thickness of

0.045 inch (1.14 mm), designed for general repairs and to strip-in PVC coated metal flanges.

> Parasolo PVC Flashing Strip by Siplast, Inc.

5. Termination Bar with Receiver: An extruded aluminum termination bar with rounded edges and an angled sealant receiver and lower leg bulb stiffener, having factory-punched, slotted holes spaced on 6-inch (152 mm) centers.

> Parafast Lip Termination Bar 6 Inch on Center by Siplast, Inc.

6. Termination Bar with Receiver: An extruded aluminum termination bar with rounded edges and an angled sealant receiver and lower leg bulb stiffener, having factory-punched, slotted holes spaced on 8-inch (203 mm) centers.

> Parafast Lip Termination Bar 8 Inch on Center by Siplast, Inc.

7. Flat Termination Bar: A flat, extruded aluminum termination bar with rounded edges, having factory-punched, slotted holes spaced on 6-inch (152 mm) centers.

> Parafast Flat Termination Bar 6 Inch on Center by Siplast, Inc.

8. Flat Termination Bar: A flat, extruded aluminum termination bar with rounded edges, having factory-punched, slotted holes spaced on 8-inch (203 mm) centers.

> Parafast Flat Termination Bar 8 Inch on Center by Siplast, Inc.

9. Pre-formed Vent Boots: A molded PVC membrane used to flash pipe and conduit penetrations having a diameter of 1 to 6 inches (25 to 152 mm). The pre-formed vent boots shall be hot-air welded directly to the PVC roof membrane.

> Parafast PVC Conical Pipe Boot by Siplast, Inc.

PREPARATION FOR REROOFING 070150.19 - 10

10. Cover Patches at T-Joints: A molded PVC membrane used to reinforce the T-joints of the specified PVC membrane system.

> Parasolo PVC T-Joint Cover Patch by Siplast, Inc.

1.5 TEMPORARY ROOF/VAPOR RETARDER

A. Self-Adhering Sheet Vapor Retarder: ASTM D1970 polyethylene film laminated to layer of rubberized asphalt adhesive with a slip-resisting surface and release paper backing, having a minimum thickness of 31-mil- (0.78-mm-) and a maximum permeance rating of 0.03 perm.

1. Siplast SA Vapor XL Retarder by Siplast, Inc.

1.6 ROOF INSULATION

A. General: Insulation shall be approved in writing by the insulation manufacturer for in-tended use and for use with the specified roof assembly. Maintain a maximum panel size of 4 feet by 4 feet where polyisocyanurate insulation is specified to be installed in insulation adhesive. Install only as much insulation as can be made watertight during the same work day.

B. Polyisocyanurate Board Insulation (organic paper facer): A closed cell, rigid polyisocy-anurate foam core material, integrally laminated between glass fiber reinforced organic facers, and meeting the criteria established by ASTM C1289, Type II, Class 1, Grade 2.

Panels shall have a nominal thickness of 2 1/2 inches. Acceptable types are as follows:

1. Paratherm by Siplast, Inc.

C. Tapered Polyisocyanurate Board Insulation (organic paper facer): A closed cell, rigid polyisocyanurate foam core material, integrally laminated between glass fiber rein-forced organic facers, and meeting the criteria established by ASTM C1289, Type II, Class 1, Grade 2. The tapered system shall incorporate fill panels of a nominal thickness and provide for a roof slope sufficient to achieve prompt and complete drainage of the roof area. Acceptable types are as follows:

1. Tapered Paratherm system by Siplast, Inc.

1.7 INSULATION COVER PANEL

A. Substrate Board: A panel composed of a gypsum based, non-structural water resistant core material integrally bonded with fiberglass mats on both sides having a nominal thickness of 1/2 inch. The panel surface shall be factory primed with a non-asphaltic primer. Acceptable types are as follows:

1. DEXcell FA Glass Mat Roof Board by National Gypsum, Company

1.8 INSULATION ACCESSORIES

A. Insulation Adhesive: A single or dual component low-rise polyurethane foam adhesive designed specifically for the adhesion of roof insulation to substrate, as well as subse-quent layers of insulation. Acceptable manufacturers are as follows:

1. Parafast Insulation Adhesive by Siplast, Inc.

B. Insulation Cant Strips: A cant strip composed of expanded volcanic minerals combined with waterproofing binders, meeting ASTM C728 criteria. The top surface shall be pre-treated with an asphalt based coating. The face of the cant shall have a nominal 4 inch dimension.

1.9 WALKWAYS

A. Walktread: A prefabricated, extruded and embossed PVC protection pad with a skid-resistant surface, having a thickness of 1/8 inch (3.2 mm) and a width of 30 inches (76.2).

PREPARATION FOR REROOFING 070150.19 - 11

1. Parasolo Walkway by Siplast, Inc.

PART 3 - EXECUTION

3.1 EXAMINATION

A. Substrate Qualification: The installing contractor shall examine all substrates where the specified roofing and flashing system will be applied and confirm their suitability to re-ceive the specified roofing materials.

3.2 PREPARATION

A. Sweep or vacuum all surfaces, removing all loose aggregate and foreign substances pri-or to commencement of roofing.

B. Remove all of the following existing conditions:

1. Surface gravel

2. Roof membrane

3. Insulation

4. Base flashings

5. Edge metal

6. Flanged metal flashings

7. Cants

8. Walkways

9. Nonfunctional penetrations/curbs

10. Drain assemblies

11. Vapor retarder

12. Metal trim, counter flashing

C. Primer for Self-Adhesive Membrane: Apply the specified tacky primer by roller or spray in an even film. Refer to the manufacturer’s literature for the approved rate of applica-tion over various substrate types. Allow the primer to dry until it leaves a slightly sticky surface without transfer when touched. Cutting or alteration of the primer is not per-mitted.

3.3 INSTALLATION OF ROOFING, GENERAL GUIDLEINES

A. General Appearance: Ensure that the finished roofing application has an aesthetically pleasing overall appearance and is acceptable to the Owner.

3.4 INSTALLATION OF TEMPORARY ROOF/VAPOR RETARDER

A. Adhere the vapor retarder directly to the substrate, free of wrinkles, creases, or fishmouths. Exert sufficient pressure on the roll during application to ensure the pre-vention of air pockets. Unroll the sheet, and set it into place utilizing minimum 3 inch side and end laps. Offset end laps of adjacent sheets a minimum of 3 feet. While main-taining the placement of the material, carefully remove the split propylene release film from the sides, keeping the film low and at an angle to the length of the sheet. Pull the release film free from the underside of the sheet while pressing the material into place with a follow tool as the film is being removed. Using a steel roller, apply pressure to ensure a seal at all side, end, and T-laps.

3.5 INSTALLATION OF INSULATION AND COVERBOARD

A. Install insulation panels with end joints offset with edges in moderate contact in ac-cordance with the insulation manufacturer's requirements. Where insulation is in-stalled in two or more layers, stagger joints between layers. Maintain a maximum panel

PREPARATION FOR REROOFING 070150.19 - 12

size of 4 feet by 4 feet for polyisocyanurate insulation applied in insulation adhesive.

Install only as much insulation as can be made watertight within the same work day.

B. Insulation - multiple layer: Install all layers in an application of the specified insulation adhesive in 3/4- to 1-inch wide beads spaced 12 inches on center in the field of the roof, 8 inches on center at the perimeter of the roof, and 6 inches on center in the corners of the roof. Panels may be affected by post-growth of the insulation adhesive. Continuous walking in of the panels is recommended particularly in perimeter/corner areas with reduced bead spacing. Follow the requirements and guidelines of the insulation adhe-sive manufacturer/supplier. Stagger the panel joints between insulation layers.

3.6 APPLICATION OF ROOFING MEMBRANE

A. Apply all layers of roofing with side laps running perpendicular to the direction of the slope. Exert sufficient pressure on the roll during application to ensure prevention of air pockets, wrinkles, creases or fishmouths. Refer to the manufacturer’s guidelines for maximum sheet lengths and special fastening of the head laps where the roof deck slope exceeds 1/2 inch per foot.

B. Roofing Application: Apply roofing to be free of wrinkles, creases or fishmouths. Use a blower and/or broom to remove any dirt or debris from the substrate surface.

1. Unroll the specified PVC sheets into place and fold back sheets in the long dimension to allow adhering of membrane, one half of the sheet at a time. Using scissors, round all exposed sheet corners a minimum of 1 inch. Apply the specified bonding adhe-sive to both the substrate surface and the underside of the roof membrane, utilizing minimum 3 inch wide side and end laps, in accordance with the recommended guidelines of the membrane manufacturer. Prevent lap contamination by keeping the adhesive application a few inches back from the lap area. Adhere approximately one half of the membrane sheet at a time. The other half of the sheet length must be folded back in turn, without creasing, to allow for adhesive application. Mate the membrane to the substrate coated with the specified adhesive once the bonding ad-hesive has flashed off and is tacky to the touch. Broom the membrane to ensure complete bonding between adhesive and membrane.

2. Where the substrate angle changes in excess of 5 degrees (i.e. 1-inch slope), me-chanically attach the membrane into the structural deck on 12-inch centers, keeping the fasteners 1/4 to 3/4 inch from the angle change. At curbs and walls, mechani-cally attach the membrane into the structural deck on 12-inch centers, keeping the fasteners 1/4 to 3/4 inch from the membrane edge. Alternatively, at walls/curbs extend the membrane a minimum of 3 inches up the vertical flashing substrate and mechanically attach the specified flat termination bar at the top edge of the mem-brane. The termination bar must be installed within 1.5 to 2 inches (38 to 51 mm) of the horizontal plane of the roof, with a minimum of 1-inch (25 mm) of membrane extending above the termination bar. Prior to mechanical attachment of the termi-nation bar, apply the specified water block sealant on the flashing substrate behind the membrane where the termination bar will be installed.

3. Install a minimum of 4 fasteners evenly spaced around all round, square, “L”-beam or “H”-beam penetrations, keeping the fasteners 1/4 to 3/4 inches from the pene-tration. At penetrations having a larger diameter, install fasteners around the pene-tration on 12-inch centers.

PREPARATION FOR REROOFING 070150.19 - 13

4. Clean the laps of membrane that have become dirty or contaminated using the spec-ified conditioner. Place a straight 2"x6" or larger board adjacent to the PVC sheet overlap to help reduce lifting of the overlapping sheet beyond the selvage area, in-hibiting the potential for entrapped air during heat welding. Lay the board such that the welder nozzle does not extend into the overlap beyond the specified lap width.

Heat weld all side and end laps of the membrane during each day’s application. All welds must be continuous, without voids, and free of burns and scorch marks. Weld shall be a minimum width of 1 inch (25.4 mm) and a maximum width of 1.5 inches (38 mm). Contact the manufacturer of the heat-welding equipment for specific guidelines on operating the equipment. When hand-welding the laps, hand-roll the side laps, head laps, and T-laps of the membrane behind the hand welder using a 2-inch neoprene roller.

C. Flashing Application - General: Locate all penetrations at least 24 inches from curbs, walls, and edges to provide access for proper application of the specified flashing mate-rials. Reinforce all coated metal and membrane flashing corners using preformed cor-ners or non-reinforced membrane. Hot-air weld all flashing membranes, accessories, and coated metal to have a minimum 2-inch (51 mm) hand-welded or minimum 1.5-inch (38 mm) automatic machine-welded lap. Overlap side and ends with the adjacent courses of the specified protection layer by a minimum of 6 inches. Reference the man-ufacturer’s standard details for all flashing conditions.

D. Flashing Application - Coated Metal Flashings: Form coated metal flashings in accord-ance with SMACNA guidelines and the manufacturer’s published specifications and de-tails. Reference the manufacturer’s published details for all flashing conditions.

E. Reinforced Smooth Flashing Application: Apply the solvent-based bonding adhesive to both the underside of the membrane and the substrate at the rate published by the manufacturer. Allow the bonding adhesive to dry until tacky to the touch before appli-cation of the flashing membrane. Mate the membrane to the flashing substrate coated with the specified adhesive. Roll the membrane to ensure complete bonding of the ad-hesive between the flashing substrate and membrane. Heat weld the laps and terminate the top of the flashing membrane in accordance with the manufacturer’s standard de-tails.

F. Flashing Application - Adhered Un-Reinforced Membrane Flashing: Apply un-reinforced membrane at field-fabricated penetrations or as reinforcement flashings in locations where preformed corners and pipe boots cannot be properly installed. Apply un-reinforced flashing in strict accordance with the published details and requirements of the roof membrane manufacturer. Allow the bonding adhesive to dry until tacky to the touch before application of the flashing membrane.

G. Catalyzed Acrylic Resin Flashing System (at penetrations): Install the liquid-applied primer and flashing system in accordance with the membrane system manufacturer’s printed installer’s guidelines and other applicable written recommendations as provid-ed by the manufacturer.

H. Water Cut-Off: At end of day's work, or when precipitation is imminent, construct a wa-ter cut-off at all open edges. Construct cut-offs to withstand protracted periods of ser-vice without leaking using materials and methods compatible with the specified roof

PREPARATION FOR REROOFING 070150.19 - 14

membrane system. Cut-offs must be completely removed prior to the resumption of roofing.

3.7 APPLICATION OF SEALANT

A. Apply a smooth continuous bead of the specified sealant at the exposed finish ply edge transition to metal flashings incorporated into the roof system.

3.8 ROOF SYSTEM INTERFACE WITH RELATED COMPONENTS

A. Walkway/Protection Pads: Install walkway rolls at all roof access locations and other designated locations including roof-mounted equipment, work locations and areas of repeated rooftop traffic. Cut the walktread into maximum 5 foot lengths and allow to relax until flat. Use a spacing of 6 inches between sheets to allow for proper drainage.

Heat-weld walkway rolls to the roof membrane surface continuously around the perim-eter of the roll.

B. Roof Drains: Fit drains with clamping rings and strainer baskets. Provide a minimum 36-inch by 36-inch sump and a slope within the sump not exceeding 4:12. Extend the roof membrane over the drain opening and cut a hole in the membrane directly over the opening, leaving 1 inch of membrane to extend past the drain flange into the drain open-ing. Punch holes through the roofing membrane at drain bolt locations. Set the mem-brane in a full bed (use minimum one full tube) of the specified water block sealant over the drain flange prior to securement of the clamping ring. Field welds cannot pass with-in 9 inches of the camping ring or within the drain sump itself. Reference the manufac-turer’s published details for appropriate treatment of roof drain conditions.

C. Termination Bars(securement at top of flashing membrane): Prior to mechanical at-tachment of the specified termination bar with receiver, apply the specified water block sealant on the flashing substrate behind the membrane where the termination bar will be installed. Mechanically attach termination bars using the specified fasteners. Apply a continuous bead of the specified sealant at the top of termination bar sealant receiver lip.

D. Termination Bars (securement of roof membrane at base of walls or curbs): Prior to mechanical attachment of the specified flat termination bar, apply the specified water block sealant on the flashing substrate behind the membrane where the termination bar will be installed. Mechanically attach flat termination bars using the specified fasteners.

3.9 FIELD QUALITY CONTROL

A. Notify the manufacturer of job completion in order to schedule a final inspection date.

Hold a meeting at the completion of the project, attended by all parties that were pre-sent at the pre-job conference. A punch list of items required for completion shall be compiled by the manufacturer's representative. Complete, sign, and send the punch list form to the manufacturer's headquarters.

B. Leave all areas around job site free of debris, roofing materials, equipment and related items after completion of job.

C. Complete all post installation procedures and meet the manufacturer's requirements for issuance of the specified guarantee.

3.6 DISPOSAL

A. Collect demolished materials and place in containers.

PREPARATION FOR REROOFING 070150.19 - 15

1. Promptly dispose of demolished materials.

2. Do not allow demolished materials to accumulate on-site.

3. Storage or sale of demolished items or materials on-site is not permitted.

B. Transport and legally dispose of demolished materials off Owner's property.

END OF SECTION 070150.19