2025 0129 BHS District-Wide Roofing Addendum #2.pdf

e h r e s m a n a r c h i t e c t s . c o m

801 W. Big Beaver Road, Suite 250, Troy, MI 48084 | 248.244.9710 | (f ) 248.244.9712

ADDENDUM

Project: Bloomfield Hills Schools District-Wide Roofing Replacement

Project No.: 6524 (RFP #1050)

Date: January 29, 2025

Addendum Number: 2

Each Bidder's proposal amount shall include the work described herein.

This Addendum is hereby made a part of the Contract Documents. Unless otherwise indicated, the work described herein shall comply with, and be equal in all respects to the original Specification and Drawings accompanying same. Include incidental work required to properly complete the work, whether stated herein or not.

DRAWING REVISIONS

E2.51 – Eastover Elementary School Enlarged Roof Plan CLARIFY: A portion of Work Note #26 was inadvertently cut-off on the previous drawing, and therefore the note window has expanded to provide all of the information.

SPECIFICATION REVISIONS

Section 07 5323 – EPDM Thermoset Single-Ply Roofing - Carlisle CHANGE: Section 3.03, Part B, item 3 FROM: Tectum Decks: Fasten base layer to tectum deck TO: Tectum Decks: Install base sheet with impact fasteners and adhere all layers of insulation with Flexible Fast.

Pre-bid Meeting Questions and Answers (from Building Reviews) Question 1: At Bloomfield Hills High School, can the existing concrete planters be removed and the existing sidewalk be used to deliver materials up to the adjacent roof area (South side of the building)?

Answer 1: The district is unsure if the existing planters can be removed as they have been in place since the building was constructed. If they can be removed, the contractor can utilize the sidewalk to deliver materials to the roof area. The existing sidewalk conditions will need to be documented prior to construction for review after roofing operations are complete. If any damage should be present, the contractor will be responsible for any replacement.

Question 2: At Conant, the coping around roof area F has standing seam end joints. Is this type of installation required for the new coping?

Answer 2: Although a standing seam end joint system is acceptable, it is not required. A standard concealed splice system is acceptable.

Question 3: At Eastover, has there been any thought as to the access to deliver materials?

Answer 3: Traditionally, contractors have used the small parking area on the west side of the building to stage materials, and have traversed the lawn area (avoiding playground equipment) to deliver materials up to the roof on the west side of the building. However, each contractor will need to provide its own plan for owner review to get materials to the roof for its operations.

Clarifications Item 1: At Bloomfield Hills High School, the construction of the existing skylight curbs is unknown but appears to be concrete. Because of this, it will be acceptable to leave the curbs after skylight removal, deck the openings, and roof leaving raised roofing areas. Insulation must be provided on these raised roofing areas. If the curbs are not concrete, the expectation is that they will be removed unless there is a structural reason for not doing so.

WORK NOTES:

1.

GENERAL NOTES:

DO NOT SCALE DRAWING. DRAWING SCALE IS SHOWN FOR GENERAL REFERENCE ONLY.G1.

G2. FIELD VERIFY ALL DIMENSIONS, ROOF SUMP LOCATIONS, EQUIPMENT CURBS, ETC. PRIOR TO

COMMENCING WITH CONSTRUCTION OPERATIONS.

THE ROOFING SHALL BE A TWENTY-FIVE (25) YEAR MANUF. ROOFING SYSTEM WARRANTY

ALONG WITH A FIVE (5) YEAR LABOR WARRANTY. EDGE METAL TO BE INCLUDED IN FULL

SYSTEM WARRANTY.

G3.

G4. REFER TO ROOF DETAILS AND MANUFACTURER'S STANDARD DETAILS FOR ADDITIONAL

INFORMATION.

G5. EXISTING ROOF DECK THICKNESS AND SLOPE IS UNKNOWN. CONTRACTOR TO VERIFY AFTER

THE ROOFING HAS BEEN REMOVED AND REPORT ANY DISCREPANCIES THAT MAY BE

DISCOVERED TO THE ARCHITECT / ROOFING SYSTEM REPRESENTATIVE FOR FURTHER

DIRECTION.

G6. ALL MECHANICAL EQUIPMENT CURBS SHALL HAVE NEW BASE FLASHING A MINIMUM OF 8"

ABOVE THE ROOFING MEMBRANE, UNLESS MORE STRINGENT REQUIREMENTS ARE NEEDED

TO MEET THE ROOFING MANUFACTURER SPECIFICATIONS. CONTRACTOR TO FIELD VERIFY

HEIGHT -- ASSUME THE EXISTING HVAC CURBS WILL NEED TO BE RAISED.

G7. INSTALL CRICKETS AT ALL EQUIPMENT CURBS HIGH SIDE, WHETHER SHOWN OR NOT.

G8. EXISTING EQUIPMENT, PENETRATIONS, ROOF DRAINS, CURBS, ETC. IDENTIFIED SHALL BE

FIELD VERIFIED BY THE CONTRACTOR WHOM WILL BE RESPONSIBLE FOR THE QUANTITIES,

CONDITIONS, HEIGHTS, ETC.

G9.

ANY EXISTING WOOD BLOCKING FOR ELECTRICAL CONDUIT AND/OR GAS PIPING SHALL BE

REPLACED WITH PROPER PREFABRICATED SUPPORT WHETHER PARTICULARLY INDICATED OR

NOT (NO WOOD BLOCKING IS PERMITTED).

G10.

CONTRACTOR TO VISIT THE SITE AND VERIFY ALL MEASUREMENTS, CONDITIONS, ETC. THAT

MAY AFFECT THE SPECIFIED WARRANTY.

G11.

AN ON-SITE PRE-CONSTRUCTION MEETING WITH THE ARCHITECT, ROOFING SYSTEM

REPRESENTATIVE, OWNER, AND CONTRACTOR SHALL BE CONDUCTED PRIOR TO THE START

OF CONSTRUCTION AND PRIOR TO ORDERING OF MATERIAL. REFER TO SPECIFICATIONS FOR

FURTHER INFORMATION.

G12.

CRICKET SLOPE TO BE 14" PER FOOT UNLESS NOTED OTHERWISE.

G13.

DRAINAGE SADDLES TO SLOPE 14" PER FOOT UNLESS NOTED OTHERWISE. CONTRACTOR TO

ASSURE POSITIVE DRAINAGE TO ROOF DRAINS / GUTTER EDGE.

RAISED MECHANICAL EXHAUST FAN UNIT / RELIEF HOOD AS REQUIRED TO MEET SYSTEM

WARRANTY REQUIREMENTS.

2.

PREFINISHED METAL CAP FLASHING (PRE-SLOPED)--REFER TO GENERAL NOTE G12.

3.

CRICKET AS REQUIRED TO PROVIDE DRAINAGE AT MECHANICAL ITEM, ETC. REFER TO

GENERAL NOTES G7 AND G19 FOR FURTHER INFORMATION.

4.

5.

6.

7.

PLUMBING VENT BOOT FLASHING (AND EXTENSION WHERE REQUIRED-C.F.V.).

8.

9.

HVAC STACK FLASHING TO SUIT CONDITIONS (C.F.V.).

10.

11.

12.

13.

14.

REMOVE EXISTING ROOFING SYSTEMS COMPETE DOWN TO EXISTING ROOF DECK.

INFORMATION ABOUT EXISTING ROOFING COMPOSITION IS FOR REFERENCE ONLY AND

SHOULD BE FIELD VERIFIED BY THE CONTRACTOR.

ROOFTOP DUCTWORK, GAS LINES, ELECTRICAL CONDUITS, ETC. MAY NOT BE INDICATED FOR

DRAWING CLARITY, BUT WILL REQUIRE RE-WORK AND MODIFICATIONS DUE TO THE WORK.

CONTRACTOR TO FIELD VERIFY ALL EXISTING CONDITIONS AND COORDINATE WITH OWNER.

PROVIDE PROPER SUPPORTS (ROLLER SUPPORTS, UNISTRUT PADS, ETC.).

CONTRACTOR WILL BE REQUIRED TO BUILD UP THE ROOF EDGE (PARAPET) AT MOST

LOCATIONS DUE TO INCREASED INSULATION HEIGHT. CONTRACTOR TO FIELD VERIFY AND

PROVIDE THE NECESSARY BLOCKING.

NEW EDGE FLASHING (PARAPET) MATERIAL IS TO BE FIELD VERIFIED WITH EXISTING WALL

CONDITIONS. WHERE ALUMINUM WALL PANELS EXIST, CONTRACTOR TO INSTALL ALUMINUM

CAP / FLASHINGS TO BE COMPATIBLE WITH WALL MATERIALS.

G14.

G15.

G16.

G17.

POLYISOCYANURATE HINGED TARGET SUMP AT EXISTING ROOF DRAIN LOCATION.

ROOF TO ROOF EXPANSION JOINT / AREA DIVIDER.

PATE EQUIPMENT SUPPORT RAILS FOR ROOFTOP HVAC ITEM (ROOFTOP CONDENSER).

PATE PIPE CURB ASSEMBLY FOR ROOFTOP HVAC ITEM (ROOFTOP CONDENSER LINESETS).

REMOVE EXISTING CURB AND COVER (INFILL DECK AS REQUIRED PRIOR TO NEW ROOFING

SYSTEM). CONTRACTOR TO CONFIRM WITH OWNER THAT ITEM IS ABANDONED PRIOR TO

REMOVAL.

ROOF EXPANSION JOINT / AREA DIVIDER.

REPLACE EXISTING ROOF HATCH WITH GALVANIZED ROOF HATCH WITH SAFETY RAILS AND

EASY-UP LADDER (IN EXISTING LOCATION). CONTRACTOR TO FIELD VERIFY EXISTING HATCH

SIZE AND REPLACE WITH SAME SIZE.

REPLACEMENT OF THE ROOF SHALL BE DONE SO-AS TO NOT REMOVE ANY MORE OF THE

ROOFING THAN CAN BE REPLACED IN A GIVEN DAY. AT NO TIME SHALL THE ROOF BE LEFT

OPEN AND SUBJECT TO WEATHER CONDITIONS. CONTRACTOR SHALL BE RESPONSIBLE FOR

ANY DAMAGE THAT OCCURS.

ANY UTILITY SHUT-DOWNS THAT ARE REQUIRED IN ORDER TO PERFORM THE RE-ROOFING

OPERATIONS SHALL BE SCHEDULED IN ADVANCE WITH THE OWNER.

CONTRACTOR TO ASSURE THAT ALL ROOF DRAINS ARE IN PROPER WORKING CONDITION

PRIOR TO COMPLETING THE RE-ROOFING OPERATIONS. REPORT ANY DISCREPANCIES TO THE

OWNER / ARCHITECT FOR FURTHER DIRECTION.

PROVIDE WALKWAY PADS / SLIP SHEETS UNDER ALL PIPE SUPPORTS.

G18.

G19.

G20.

G21.

REMOVE EXISTING PLUMBING VENT AND CAP BELOW ROOF PER CODE REQUIREMENTS

(ASSUMED ABANDONED). CONTRACTOR TO CONFIRM WITH OWNER THAT ITEM IS ABANDONED

PRIOR TO REMOVAL.

PITCH POCKET FOR EXISTING PENETRATION.

EXISTING PATE PIPE CURB TO REMAIN.

COUNTERFLASHING (MINIMUM 12" ABOVE MEMBRANE SURFACE).17.

CONTRACTOR TO PROVIDE SLIP FLASHING AT ALL UNITS AND AS REQUIRED.G22.

NOT ALL NOTES MAY APPLY TO THIS SHEET.G23.

15.

16.

WRAP ROOFING MEMBRANE UP FACE OF WALL AND UNDER EXISTING CAP FLASHING.

REMOVE AND REINSTALL FLASHING AS REQUIRED.

REMOVE EXISTING WOOD GUARDRAIL AROUND EXISTING SKYLIGHT.

CONTRACTOR TO PROTECT OWNER'S EXISTING ASPHALT / CONCRETE PAVING AND/OR LAWN

AREAS FROM CONSTRUCTION TRAFFIC. IF DAMAGE SHOULD OCCUR, CONTRACTOR IS

RESPONSIBLE TO COORDINATE AND PAY FOR ALL REPAIRS TO BRING THE ITEM BACK TO THE

CONDITION BEFORE CONSTRUCTION COMMENCED. IT SHALL BE THE OWNER'S OPTION TO

HAVE THEIR VENDOR MAKE ANY REPAIRS, AND THE CONTRACTOR'S CONTRACT WILL BE

REDUCED VIA CHANGE ORDER TO COVER SUCH REPAIRS.

G24.

ROOFING SYSTEM COMPOSITION:

· 60-MIL FULLY ADHERED EPDM ROOFING MEMBRANE (WITH 25-YEAR DETAILS) CARRIED

UP AND OVER PARAPET WALL

· ADHESIVE APPLIED TAPER INSULATION

· ADHESIVE APPLIED POLYISOCYANURATE INSULATION (1.5 INCHES PLUS 12" TAPER START)

· MECHANICALLY FASTENED ASPHALT BASE SHEET WITH IMPACT BASE SHEET FASTENERS

· EXISTING TECTUM ROOF DECK (ASSUMED FLAT)

COUNTERFLASHING (MINIMUM 12" ABOVE MEMBRANE SURFACE).

REMOVE EXISTING WOOD GUARDRAIL AROUND EXISTING SKYLIGHT.18.

REMOVE EXISTING SKYLIGHT (INFILL DECK AS REQUIRED PRIOR TO NEW ROOFING SYSTEM).

DRAINAGE SCUPPER THROUGH WALL.20.

19.

PREFINISHED METAL EDGE FLASHING--REFER TO GENERAL NOTE G12.21.

REMOVE AND REINSTALL EXISTING GUTTER SYSTEM AS NEEDED FOR ROOFING OPERATIONS.22.

EXISTING COPPER / METAL CAP AND RIDGE CAP TO REMAIN.23.

CONTRACTOR TO PROVIDE PRESERVATIVE TREATED WOOD BLOCKING AT LOCATION OF

ALUMINUM WALL PANELS DUE TO RAISED PARAPET HEIGHT (BASED ON PREVIOUS ROOF

REPLACEMENT, ALUMINUM WALL PANELS STOP SHORT AND REQUIRES ADDITIONAL

BLOCKING).

EXISTING ROOF EXPANSION JOINT METAL TO BE REMOVED AND REINSTALLED TO COMPLETE

ROOFING OPERATIONS.

25.

24.

26.

ROOFING SYSTEM COMPOSITION:

ROOFING SYSTEM COMPOSITION:

· 60-MIL FULLY ADHERED EPDM ROOFING MEMBRANE (WITH 25-YEAR DETAILS) CARRIED

UP AND OVER PARAPET WALL

· ADHESIVE APPLIED TAPER INSULATION

· MECHANICALLY FASTENED POLYISOCYANURATE INSULATION (1.5 INCHES PLUS 12" TAPER

START)

· SELF-ADHERING VAPOR BARRIER (AT ACOUSTICAL METAL DECK ONLY)

· EXISTING METAL / ACOUSTICAL METAL ROOF DECK (ASSUMED FLAT)

29.

ROOFING SYSTEM COMPOSITION:

· ASPHALT SHINGLES

· ROOF DECK PROTECTION OVER ENTIRE ROOF AREA (ICE & WATER SHIELD)

· EXISTING ROOF DECK (UNKNOWN)

27.

PREFINISHED RIDGE / CAP FLASHING OVER EXISTING SLOPED METAL ROOF / WALL PANELS.28.

ROOFING SYSTEM COMPOSITION:

· 60-MIL FULLY ADHERED EPDM ROOFING MEMBRANE (WITH 25-YEAR DETAILS) CARRIED

UP AND OVER PARAPET WALL

· ADHESIVE APPLIED TAPER INSULATION

· ADHESIVE APPLIED POLYISOCYANURATE INSULATION (1.5 INCHES PLUS 12" TAPER START)

· MECHANICALLY FASTENED ASPHALT BASE SHEET WITH IMPACT BASE SHEET FASTENERS

· EXISTING GYPSUM ROOF DECK (ASSUMED FLAT)

30.

EXISTING ELECTRICAL JUNCTION BOX TO REMAIN--INSTALL ROOF WALKWAY PAD / SLIP

SHEET UNDER JUNCTION BOX.

EXISTING WALL-MOUNTED LADDER TO BE REMOVED AND RELOCATED PER OWNER DIRECTED

31.

30" x 30" WALKWAY PAD INSTALLED PER MANUFACTURER'S REQUIREMENTS. INTENT IS

FOR WALKWAY PADS TO BE INSTALLED AT ROOF HATCHES AND AROUND ALL HVAC

ROOFTOP UNITS.

LEGEND:

SHEET UNDER JUNCTION BOX.

EXISTING WALL-MOUNTED LADDER TO BE REMOVED AND RELOCATED PER OWNER DIRECTED

LOCATION. CONTRACTOR TO MODIFY BRACKET(S) AS REQUIRED TO SUIT BUILDING

CONDITIONS. PATCH / REPAIR FASTENER HOLES IN EXISTING WALL PANELS / FLASHINGS,

ETC.

32.

EXISTING STRUCTURAL COLUMN PENETRATION--PROVIDE MANUFACTURER'S TYPICAL I-BEAM

PENETRATION DETAIL.

33.

REMOVE AND REPLACE EXISTING ROOFING, BASE FLASHING, INSULATION, ETC. IN AREA

BETWEEN ROOF EDGE AND PARAPET.

34.

PREFINISHED METAL GUTTER AND DOWNSPOUT TO GRADE. SLOPE GUTTER TO DOWNSPOUT

LOCATION AND PROVIDE CONCRETE SPLASH BLOCK ON GRADE.

35.

AT ACOUSTICAL METAL DECK LOCATIONS, CONTRACTOR TO PROVIDE PLASTIC SHEETING

(VISQUEEN) TO PROTECT FLOOR BELOW FROM DUST AND DEBRIS. CONTRACTOR TO PLACE

SHEETING AND REMOVE AFTER ROOFING OPERATIONS. OWNER WILL PROVIDE THE FINAL

CONSTRUCTION CLEANING. REFER TO ALTERNATE #1 FOR FURTHER INFORMATION.

36.

© Ehresman Architects

E2.51Project No. 6524

Bloomfield Hills Schools District-Wide Roofing Replacement

Enlarged Roof Plan

Addendum #2: 29 January 2025

Addendum #1: 24 January 2025

Permits & Bidding: 21 January 2025

Eastover Elementary School

Scale: 1/8"=1'-0" Enlarged Roof Plan (Eastover Elementary)

E2.51

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Ehresman Architects 07 5323 EDPM Thermoset Single-Ply Roofing - Carlisle Bloomfield Hills Schools Project No.: 6524 District-Wide Roofing Replacements Page 1

SECTION 07 5323

EPDM THERMOSET SINGLE-PLY ROOFING - CARLISLE

PART 1 GENERAL

1.01 DESCRIPTION

A. The Bloomfield Hills School District Roof Replacement Project includes two different schools.

Schools included are: Bloomfield Hills High School, Conant Elementary and Eastover Elementary. Jacob McDermott will act as the Owner’s Representative and may be contacted regarding any questions or for a pre-bid job site inspection.

B. School sections consist of: Roof Sections Identified at the end of Spec.

1. Bloomfield Hills High School: O, S, T, V

2. Conant Elementary School: D1, E, F, G, H, I, J

3. Eastover Elementary School: B

C. The project consists of installing Carlisle’s Sure-Seal (black) Adhered Roofing System as outlined below:

1. Apply the Fully Adhered EPDM Roofing System in conjunction with new Poly ISO and a vapor barrier only on the metal and concrete deck areas after tear off of the existing built up roofing material roof to expose the concrete/tectum/metal decking for verification of suitable substrate as specified in this specification.

D. Asphalt roof sections will be stripped down to the wood decking and replaced with new Architectural Shingles.

1.02 EXTENT OF WORK

A. Provide all labor, material, tools, equipment, and supervision necessary to complete the installation of a Sure-Seal 60-mil EPDM membrane Fully Adhered Roofing System including flashings and insulation as specified herein and as indicated on the drawings in accordance with the manufacturer’s most current specifications and details.

B. The roofing contractor shall be fully knowledgeable of all requirements of the contract documents and shall make themselves aware of all job site conditions that will affect their work.

C. The roofing contractor shall confirm all give information and advise the building owner, prior to bid, of any conflicts that will affect their cost proposal.

D. Any contractor who intends to submit a bid using a roofing system other than the approved manufacturer must submit for pre-qualification in writing fourteen (14) days prior to the bid date.

Any contractor who fails to submit all information as requested will be subject to rejection. Bids stating “as per plans and specs” will be unacceptable.

1.03 SUBMITTALS

A. Prior to starting work, the roofing contractor must submit the following:

1. Shop drawings showing layout, details of construction and identification of materials.

2. Sample of the manufacturer’s Total Systems Warranty covering all components of the roofing system.

3. Submit a letter of certification from the manufacturer which certifies the roofing contractor is authorized to install the manufacturer’s roofing system and lists foremen who have received training from the manufacturer along with the dates training was received.

4. Certification of the manufacturer’s warranty reserve.

B. Upon completion of the installed work, submit copies of the manufacturer’s final inspection report to the specifier prior to the issuance of the manufacturer’s warranty.

ADDENDUM #2

District-Wide Roofing Replacements Page 2

1.04 PRODUCT DELIVERY, STORAGE AND HANDLING

A. Deliver materials to the job site in the manufacturer’s original, unopened containers or wrappings with the manufacturer’s name, brand name and installation instructions intact and legible. Deliver in sufficient quantity to permit work to continue without interruption.

B. Comply with the manufacturer’s written instructions for proper material storage.

1. Store materials between 60°F and 80°F in dry areas protected from water and direct sunlight. If exposed to lower temperature, restore to 60°F minimum temperature before using.

2. Store materials containing solvents in dry, well-ventilated spaces with proper fire and safety precautions. Keep lids on tight. Use before expiration of their shelf life.

C. Insulation and underlayment products must be on pallets, off the ground and tightly covered with waterproof materials. Manufacturer’s wrap does not provide sufficient waterproofing.

Insulation and underlayment products that become wet or saturated are to be discarded.

D. Any materials which are found to be damaged shall be removed and replaced at the applicator’s expense.

1.05 WORK SEQUENCE

A. Schedule and execute work to prevent leaks and excessive traffic on completed roof sections.

Care should be exercised to provide protection for the interior of the building and to ensure water does not flow beneath any completed sections of the membrane system.

B. Do not disrupt activities in occupied spaces.

1.06 USE OF THE PREMISES

A. Before beginning work, the roofing contractor must secure approval from the building owner’s representative for the following:

1. Areas permitted for personnel parking.

2. Access to the site.

3. Areas permitted for storage of materials and debris.

4. Areas permitted for the location of cranes, hoists and chutes for loading and unloading materials to and from the roof.

1.07 EXISTING CONDITIONS

A. If discrepancies are discovered between the existing conditions and those noted on the drawings, immediately notify the owner’s representative by phone and solicit the manufacturer’s approval prior to commencing with the work. Necessary steps shall be taken to make the building watertight until the discrepancies are resolved.

1.08 PRE-CONSTRUCTION CONFERENCE

A. A non- mandatory pre-bid meeting will be held at the job site on Thursday, January 23, 2025, 2024 at 10:00 a.m.

B. Contact the owner’s representative, Jacob McDermott, at (248) 341-5400 if there are any questions.

C. Bids must be forwarded to the following address no later than 1:00 p.m. on Tuesday, February

4, 2025:

Bloomfield Hills Schools Facilities Offices 281 Enterprise Court, Suite 300 Bloomfield Hills, MI 48303

D. Any conditions which are not shown on the shop drawings should be indicated on a copy of the shop drawing and included with bid submittal if necessary to clarify any conditions not shown.

District-Wide Roofing Replacements Page 3

1.09 TEMPORARY FACILITIES AND CONTROLS

A. Temporary Utilities:

1. Water, power for construction purposes and lighting are not available at the site and will not be made available to the roofing contractor.

2. Provide all hoses, valves and connections for water from source designated by the owner when made available.

3. When available, electrical power should be extended as required from the source.

Provide all trailers, connections and fused disconnects.

B. Temporary Sanitary Facilities

1. Sanitary facilities will not be available at the job site. The roofing contractor shall be responsible for the provision and maintenance of portable toilets or their equal.

C. Building Site:

1. The roofing contractor shall use reasonable care and responsibility to protect the building and site against damages. The contractor shall be responsible for the correction of any damage incurred as a result of the performance of the contract.

2. The roofing contractor shall remove all construction debris from the job site in a timely and legally acceptable manner so as to not detract from the aesthetics or the functions of the building.

D. Security:

1. Obey the owner’s requirements for personnel identification, inspection and other security measures.

1.10 JOB SITE PROTECTION

A. The roofing contractor shall adequately protect building, paved areas, service drives, lawn, shrubs, trees, etc. from damage while performing the required work. Provide canvas, boards and sheet metal (properly secured) as necessary for protection and remove protection material at completion. The contractor shall repair or be responsible for costs to repair all property damaged during the roofing application.

B. During the roofing contractor’s performance of the work, the building owner will continue to occupy the existing building. The contractor shall take precautions to prevent the spread of dust and debris, particularly where such material may sift into the building. The roofing contractor shall provide labor and materials to construct, maintain and remove necessary temporary enclosures to prevent dust or debris in the construction area(s) from entering the remainder of the building.

C. Do not overload any portion of the building, either by use of or placement of equipment, storage of debris, or storage of materials.

D. Protect against fire and flame spread. Maintain proper and adequate fire extinguishers.

E. Take precautions to prevent drains from clogging during the roofing application. Remove debris at the completion of each day’s work and clean drains, if required. At completion, test drains to ensure the system is free running and drains are watertight. Remove strainers and plug drains in areas where work is in progress. Install flags or other telltales on plugs.

Remove plugs each night and screen drain.

F. Store moisture susceptible materials above ground and protect with waterproof coverings.

G. Remove all traces of piled bulk materials and return the job site to its original condition upon completion of the work.

1.11 SAFETY

A. The roofing contractor shall be responsible for all means and methods as they relate to safety and shall comply with all applicable local, state and federal requirements that are safety related.

Safety shall be the responsibility of the roofing contractor. All related personnel shall be

District-Wide Roofing Replacements Page 4 instructed daily to be mindful of the full-time requirement to maintain a safe environment for the facility’s occupants including staff, visitors, customers and the occurrence of the general public on or near the site.

1.12 WORKMANSHIP

A. Applicators installing new roof, flashing and related work shall be factory trained and approved by the manufacturer they are representing.

B. All work shall be of highest quality and in strict accordance with the manufacturer’s published specifications and to the building owner’s satisfaction.

C. There shall be a supervisor on the job site at all times while work is in progress.

D. All field seams and flashing details are to be completed according to manufacturer’s specifications and details by the end of each work day.

1.13 QUALITY ASSURANCE

A. The Sure-Seal Roofing System must achieve a UL Class A B. The membrane must be manufactured by the material supplier. Manufacturer’s supplying membrane made by others are not acceptable.

C. The manufacturer must have a minimum of 30 years experience in the manufacturing of vulcanized, white or black, thermoset sheeting.

D. Unless otherwise noted in this specification, the roofing contractor must strictly comply with the manufacturer’s current specifications and details.

E. The roofing system must be installed by an applicator authorized and trained by the manufacturer in compliance with shop drawings as approved by the manufacturer. The roofing applicator shall be thoroughly experienced and upon request be able to provide evidence of having at least five (5) years successful experience installing single-ply EPDM roofing systems and having installed at least one (1) EPDM roofing application or several similar systems of equal or greater size within one year.

F. Provide adequate number of experienced workmen regularly engaged in this type of work who are skilled in the application techniques of the materials specified. Provide at least one thoroughly trained and experienced superintendent on the job at all times roofing work is in progress.

G. There shall be no deviations made from this specification or the approved shop drawings without the prior written approval of the specifier. Any deviation from the manufacturer’s installation procedures must be supported by a written certification on the manufacturer’s letterhead and presented for the specifier’s consideration.

H. Upon completion of the installation, the applicator shall arrange for an inspection to be made by a non-sales technical representative of the membrane manufacturer in order to identify any needed corrective repairs that will be required for warranty issuance. Notify the building owner seventy-two (72) hours prior to the manufacturer’s final inspection.

I. Inspector shall be employed and trained by the manufacturer and have received product-specific training from the manufacturer of the products.

J. The Sure-Seal EPDM Membrane exceeds 41,580 kJ/m2 under Xenon-Arc UV Light testing used for testing “Resistance to Outdoor (Ultraviolet) Weathering.” (ASTM D 4637 Specification requires a 7560 kJ/m2 minimum total radiant exposure at 70 W/m2 irradiance at 176oF black panel temperature to pass.) The membrane shows no visible signs of cracking or crazing.

K. Sure-Seal, Sure-White, or Sure-Tough EPDM Membranes achieves a zero (no growth) rating in the ASTM G21 test for fungi growth.

District-Wide Roofing Replacements Page 5

1.14 JOB CONDITIONS, CAUTIONS AND WARNINGS

A. Refer to Carlisle’s EPDM Roofing System specification for General Job Site Considerations.

B. Safety Data Sheets (SDS) must be on location at all times during the transportation, storage and application of materials.

C. When positioning membrane sheets, exercise care to locate all field splices away from low spots and out of drain sumps. All field splices should be shingled to prevent bucking of water.

D. When loading materials onto the roof, the Carlisle Authorized Roofing Applicator must comply with the requirements of the building owner to prevent overloading and possible disturbance to the building structure.

E. Proceed with roofing work only when weather conditions are in compliance with the manufacturer’s recommended limitations, and when conditions will permit the work to proceed in accordance with the manufacturer’s requirements and recommendations.

F. Proceed with work so new roofing materials are not subject to construction traffic. When necessary, new roof sections shall be protected and inspected upon completion for possible damage.

G. Provide protection, such as 3/4 inch thick plywood, for all roof areas exposed to traffic during construction. Plywood must be smooth and free of fasteners and splinters.

H. The surface on which the insulation or roofing membrane is to be applied shall be clean, smooth, dry, and free of projections or contaminants that would prevent proper application of or be incompatible with the new installation, such as fins, sharp edges, foreign materials, oil and grease.

I. New roofing shall be complete and weathertight at the end of the work day.

J. Contaminants such as grease, fats and oils shall not be permitted to come in direct contact with the roofing membrane. An overlay of Epichlorohydrin membrane must be adhered around units which have the potential to emit solvents, grease or oil.

1.15 WARRANTY

A. Provide manufacturer’s 25 year Total System Warranty covering both labor and all materials with no dollar limitation. The maximum wind speed coverage shall be peak gusts of 72 mph measured at 10 meters above ground level. Certification is required with bid submittal indicating the manufacturer has reviewed and agreed to such wind coverage.

B. Pro-rated System Warranties shall not be accepted.

C. Edge Metal to be included in the whole system warranty.

PART 2 PRODUCTS

2.01 GENERAL

A. All components of the specified roofing system shall be products of Carlisle SynTec or accepted by Carlisle SynTec as compatible.

Unless otherwise approved by the specifier and accepted by the membrane manufacturer, all products (including insulation, fasteners, fastening plates and edgings) must be manufactured and supplied by the roofing system manufacturer and covered by the warranty.

2.02 MEMBRANE

A. Furnish Sure-Seal 60-mil EPDM (Ethylene, Propylene, Diene Terpolymer) in the largest sheet possible with 3” Factory-Applied Tape (FAT). (Splice tape shall be a butyl/EPDM based polymer with a minimum thickness of 25-mil.) The membrane shall conform to the minimum physical properties of ASTM D4637. When a 10 foot wide membrane is to be used, the membrane shall be manufactured in a single panel with no factory splices to reduce splice intersections.

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2.03 INSULATION/UNDERLAYMENT

A. When applicable, insulation shall be installed in multiple layers. The first and second layer of insulation shall be mechanically fastened or adhered to the substrate in accordance with the manufacturer’s published specifications.

B. Insulation shall be Polyisocyanurate as supplied by Carlisle SynTec. Insulation thickness as noted on roof plan.

1. Carlisle Insulbase Polyisocyanurate – A foam core insulation board covered on both sides with a medium weight fiber-reinforced felt facer meeting ASTM C 1289-06, Type II, Class 1, Grade 2 (20 psi). The product is available in 4’ x 8’ standard size with a thickness from 1 to 4 inches. 4’ x 4’ tapered panels are also available.

2.04 FASTENING COMPONENTS

To be used for mechanical attachment of insulation and to provide additional membrane securement:

A. Fasteners, Plates and Bars

1. HP- Fasteners: a threaded, #14 fastener with a #3 phillips drive used with steel and wood roof decks.

2. HP-X Fasteners: A heavy duty #15 threaded fastener with a #3 phillips drive used for insulation securement into steel, wood plank or minimum 15/32 inch thick plywood when increased pullout resistance is desired.

3. InsulFast Fasteners: A threaded #12 fastener with #3 phillips drive used for insulation attachment into steel or wood decks.

4. HP 14-10 Fasteners: A #14 threaded fastener with a #3 phillips drive used for minimum 3,000 psi concrete decks.

5. Polymer Gyptec Fasteners: A non-penetrating, plastic fastener and corresponding 3” diameter plate used with lightweight deck substrates such as cementitious wood fiber, gypsum, and lightweight insulating concrete.

6. Lite-Deck Fastener: an oversized diameter metal fastener and associated 3” diameter Lite-Deck metal plate for used to attach insulation to dense gypsum decks.

7. HP Term Bar Nail-Ins: A 1-1/4” long expansion anchor with a zinc plated steel drive pin used for fastening the Carlisle Termination Bar or Seam Fastening Plates to concrete, brick, or block walls.

8. Seam Fastening Plate: a 2” diameter metal fastening plate used in conjunction with RUSS or EPDM membrane for additional membrane securement.

9. Polymer Seam Plate: a 2” diameter plastic fastening plate incorporating barbs on the underside of the plate. This plate is required for membrane and RUSS attachment installed in conjunction with steel roof decks. May also be used for insulation attachment.

10. Insulation Fastening Plates: a nominal 3 inch diameter plastic or metal plate used for insulation attachment.

11. Sure-Seal Pressure-Sensitive RUSS™ (Reinforced Universal Securement Strip): a 6” wide, nominal 45-mil thick clean, cured black reinforced EPDM membrane with 3” wide SecurTAPE laminated along one edge. The 6” wide Pressure-Sensitive RUSS is used horizontally or vertically at the base of walls, curbs, etc., in conjunction with 2” diameter securement plates or bars below the EPDM deck membrane for additional membrane securement.

12. Carlisle Dual Prong Base Sheet Fastener: a 2.7” diameter GALVALUME® plate, and a locking staple formed from high-tensile coated steel wire. Dual Prong Fasteners are installed using Carlisle’s stand-up Dual Prong Applicator, which holds and drives the tube into the deck and sets the wires.

B. Insulation Adhesives

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1. Flexible FAST Adhesive: An elongating impact resistant two component insulating urethane adhesive used to attach insulation. Packaging formats include 50 and 15 gallon drums as well as Dual Tanks, Dual Cartridges and 5 gallon Jug formats.

a. Adhesive to provide 150% elongation in conjunction with fleece backed membrane –

ASTM D412

b. MDI content of Part A material less than 25%.

2.05 ADHESIVES, CLEANERS AND SEALANTS

All products shall be furnished by Carlisle and specifically formulated for the intended purpose.

A. 90-8-30A Bonding Adhesive: A high-strength, yellow colored, synthetic rubber adhesive used for bonding Sure-Seal/Sure-White EPDM membranes to various surfaces. Available in 5 gallon pails.

B. Carlisle Weathered Membrane Cleaner: A clear, solvent-based cleaner used to loosen and remove dirt and other contaminants from the surface of exposed EPDM membrane (for repairs, etc.) prior to applying EPDM Primer. Weathered Membrane Cleaner can also be used when applying Splicing Cement. Available in 1 and 5-gallon pails.

C. Sure-Seal/Sure-White Pressure-Sensitive SecurTAPE™ (Factory Applied): A 3" or 6" wide by 100' long splice tape used for splicing adjoining sections of EPDM membrane. Complies with the South Coast Air Quality Management District Rule 1168.

D. HP-250 EPDM Primer: A solvent-based primer used to prepare the surface of EPDM membrane for application of Splice Tape or Pressure-Sensitive products. Available in 1 or 3 gallon pails and as CAV-PRIME Pressurized Cylinders.

E. Lap Sealant: A heavy-bodied material used to seal the exposed edges of a membrane splice.

Available in tubes.

1. Sure-Seal Lap Sealant is a black sealant for use with Sure-Seal (black) Roofing Systems.

2. Sure-White Lap Sealant is a white sealant for use with Sure-White (white-on-black)

Roofing Systems.

F. Water Cut-Off Mastic: A one-component, low viscosity, self wetting, Butyl blend mastic used to achieve a compression seal between the EPDM membrane or Elastoform Flashing and applicable substrates. Available in tubes.

G. Pourable Sealer: A black, two-component, solvent-free, polyurethane based product used for tie-ins and as a sealant around hard-to-flash membrane penetrating objects such as clusters of pipes and for a daily seal when the completion of flashings and terminations cannot be completed by the end of each work day.

H. One-Part Pourable Sealer: Available in black or white, a one-component, moisture curing, elastomeric polyether sealant used for attaching lightning rod bases and ground cable clips to the membrane surface and as a sealant around hard-to-flash penetrations such as clusters of pipes.

I. Universal Single-Ply Sealant A one-part polyether, non-sagging sealant designed for sealing expansion joints, control joints and counter flashings. Available in white only.

J. CAV-GRIP III Low-VOC Aerosol Contact Adhesive/Primer: a low-VOC, methylene chloride-free adhesive that can be used for a variety of applications including: enhancing the bond between Carlisle’s VapAir Seal 725TR and various substrates, priming unexposed asphalt prior to applying Flexible FAST Adhesive, adhering Sure-Seal EPDM, horizontally, for the field of the roof and for adhering Sure-Seal FleeceBACK and Sure-Seal EPDM membrane to vertical walls.

Coverage rate is approximately 2,000-2,500 sq. ft. per #40 cylinder and 4,000-5,000 sq. ft. per #85 cylinder as a primer, in a single-sided application and 750 sq. ft. per #40 cylinder and 1,500

sq. ft. per #85 cylinder as an adhesive for vertical walls, in a double-sided application.

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2.06 METAL EDGING AND MEMBRANE TERMINATIONS

A. General: All metal edgings shall be tested and meet ANSI/SPRI ES-1 standards and comply with International Building Code. All metal work is to be supplied and warranted by the manufacturer.

1. SecurEdge 400: a coping or fascia, snap-on edge system consisting of a 22 gauge galvanized metal water dam and 24 gauge steel. Metal fascia color shall be as designated by the Owner's Representative. ANSI/SPRI ES-1 Certified.

2. SecurEdge 4000: a metal fascia system with a 20 gauge steel retainer bar and 24 gauge steel fascia. Metal fascia color shall be as designated by the Owner's Representative.

ANSI/SPRI ES-1 Certified.

3. SecurEdge 200: a coping or fascia, snap-on edge system consisting of a 24 gauge galvanized metal water dam and 24 gauge steel. Metal fascia color shall be as designated by the Owner's Representative. ANSI/SPRI ES-1 Certified. Coping FM Approved 1-90. Fascia FM Approved 1-195.

4. SecurEdge 2000: a metal fascia system with an extruded aluminum anchor bar and 24 gauge galvanized steel fascia. Metal fascia color shall be as designated by the Owner's Representative. ANSI/SPRI ES-1 Certified. 2000 Fascia FM Approved 1-645. 2000 Extended Fascia FM Approved 1-270. 2000 Canted Fascia FM Approved 1-270.

B. Metal Era Supplied

1. SecurEdge One Fascia: A snap-on edge system consisting of a 20 gauge retainer bar, corrosion resistant fasteners and a 24 gauge or 0.040 aluminum Kynar finished fascia cover. A spring clip holds the fascia cover in place. Available in sizes up to 8” fascia height 12’ long. Metal fascia color shall be designated by the Owner’s Representative.

ANSI/SPRI ES-1 Certified.

2. SecurEdge One Coping: A snap-on coping edge system consisting of a 24 gauge retainer bar (face side only), corrosion resistant fasteners and a 24 gauge or 0.040 aluminum Kynar finished coping cover. The coping cover is secured by clipping on the retainer bar and fastened on the backside with corrosion resistant fasteners (with rubber washer). Available for wall thicknesses up to 30”. Metal coping cap color shall be as designated by the Owner's Representative. ANSI/SPRI ES-1 Certified.

C. Drip Edge: a metal fascia/edge system with a 22 or 24 gauge continuous anchor cleat and .032 inch thick aluminum or 24 gauge steel fascia. Metal fascia color shall be as designated by the Owner's Representative.

D. SecurEdge Coping: incorporates a 20 gauge anchor cleat with 4 pre-slotted holes, a concealed joint cover and 10 foot continuous sections of coping cap; can accommodate minimum 5 “ wide parapet walls. Metal coping cap color shall be as designated by the Owner's Representative.

E. Termination Bar: a 1” wide and .098” thick extruded aluminum bar pre-punched 6” on center;

incorporates a sealant ledge to support Lap Sealant and provide increased stability for membrane terminations.

SecurEdge Term Bar Fascia: A 1.75” wide formed aluminum termination bar with pre-slotted fastening holes for ease of locating and installing. The decorative cover is available in 0.040” aluminum or 24-gauge galvanized steel. SecurEdge Term Bar Fascia is manufactured in 12’ lengths for fewer joints/seams, fewer sections to handle and faster installation.

2.07 WALKWAYS

Protective surfacing for roof traffic shall be Sure-Seal (black) Pressure-Sensitive Walkway Pads (with Factory-Applied Tape on the underside of the walkway) adhered to the membrane surface in conjunction with Sure-Seal Primer.

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2.08 OTHER MATERIALS

A. Carlisle VapAir Seal 725TR Air & Vapor Barrier / Temporary Roof: 725TR is a 40-mil composite consisting of 35 mils of self-adhering rubberized asphalt factory laminated to a 5-mil polyethylene film with an adhesion textured surface. 725TR roll dimensions are 39” x 100’ and the product is applied after priming an acceptable substrate with CCW 702, 702-LV or Cav-Grip III primer.

B. Carlisle VapAir Seal MD Air and Vapor Barrier: a reinforced composite aluminum foil with self-adhesive SBS backing and removable poly release film. Used for direct application over metal decks. Available in rolls 42.5" wide by 131.23” long (460 square feet).

C. Carlisle SureMB G2 Base Sheet: a non-porous 28-pound base sheet designed to be strong, durable, and wrinkle resistant. This product’s unique combination of strength and suppleness is achieved by coating a heavyweight fi berglass mat with type IV asphalt, which helps to maintain a uniform consistency on both sides of the sheet and eliminate pinholes. G2 Base Sheet is used as a base ply in a wide variety of cold- and hot-applied asphalt systems with Carlisle’s AFX EPDM or TPO cap sheets or FleeceBACK® PVC KEE HP cap sheets. Its suppleness and extreme pliability make the G2 Base Sheet a good alternative for organic base where a decay-resistant inorganic mat is desired. This base sheet is classifi ed by Underwriters Laboratory as a type G2-coated base sheet and meets the requirements of ASTM D4601 Type II.

PART 3 EXECUTION

3.01 GENERAL

A. Comply with the manufacturer’s published instructions for the installation of the membrane roofing system including proper substrate preparation, jobsite considerations and weather restrictions.

B. Position sheets to accommodate contours of the roof deck and shingle splices to avoid bucking water.

3.02 VAPOR RETARDERS

A. General:

1. The use of a vapor retarder to protect insulation and reduce moisture accumulation within an insulated roofing assembly should be investigated, especially on projects with high interior humidity, such as, swimming pools, breweries, pulp mills, etc.

B. In the generally temperate climate of the United States, during the winter months, water vapor flows upward from a heated, more humid interior toward a colder, drier exterior. Vapor retarders are more commonly required in northern climates than in southern regions, where downward vapor pressure may be expected and the roofing membrane itself becomes the vapor retarder.

C. On cold storage/freezer facilities, the perimeter details must be selected to provide an air seal and prevent outside air from infiltrating and condensing within the roofing assembly.

D. Consult the latest publications by ASHRAE (American Society of Heating, Refrigerating and Air- Conditioning Engineers, Inc.) and NRCA (National Roofing Contractors Association) for specific information.

E. If insulation is to be adhered to the vapor retarder with Flexible FAST Adhesive, the 725TR vapor retarder must be compatible and shall be fully adhered to the substrate. Available products include Carlisle supplied “peel and stick” rubberized asphalt membrane with compatible film coating (Carlisle VapAir Seal 725TR Air and Vapor Barrier), and spray or roller applied butyl coatings. Installation requirements for Carlisle’s VapAir Seal 725TR Air and Vapor Barrier are identified in Carlisle published specification.

F. VapAir Seal 725TR Installation: Over Concrete Decks Only

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1. Surface Preparation: Concrete shall be in place for 7 days minimum and the substrate must be dry. The surface shall have a smooth finish and be free of voids, spalled areas, sharp protrusions, loose aggregate, latency and form release agents. In the event of rain, concrete must be allowed to dry before primer is applied.

2. Primer: Surfaces to receive Carlisle VapAir Seal 725TR Air and Vapor Barrier must be clean and dry. Prime with Cav-Grip III Primer. Apply Primer by spray, brush or with a long nap roller at the applicable coverage rate noted above. At 75 F allow primer to dry 1 hour minimum. Primer has a satisfactory cure when it will not transfer when touched. Prime only areas to be waterproofed the same day. Re-prime if area becomes dirty.

3. Application: Apply Carlisle VapAir Seal 725TR Air and Vapor Barrier from low to high point, in a shingle fashion, so that laps will shed water. Overlap all edges at lease 2-1/2".

End laps shall be staggered. Place membrane carefully so as to avoid wrinkles and fishmouths. Immediately after installation, roll with a 30” wide 150 pound weighted segmented steel roller.

4. Insulation Installation: Ensure surface of Carlisle VapAir Seal 725TR Air and Vapor Barrier is dry prior to installing insulation. Place insulation over the surface and mechanically fasten to the roof deck and adhere subsequent layers with Flexible FAST Adhesive in accordance with this Carlisle Specification.

G. For metal decks, VapAir Seal MD Air and Vapor Barrier is specifically designed for direct application to fluted steel decks. It may also be used in conjunction with either Carlisle’s CAV- GRIP III on vertical wall surfaces, such as structural concrete, gypsum, Securock, DensDeck Prime, DensDeck StormX Prime and plywood substrates.

H. VapAir Seal MD Installation: Over Acoustic Metal Decks Only

1. Surface Preparation: The surface shall have a smooth finish and be free of voids, spalled areas, sharp protrusions, loose aggregate, laitance and form release agents. In the event of rain, concrete must be allowed to dry before primer is applied.

2. Primer: Surfaces to receive VapAir Seal MD Air and Vapor Barrier must be clean and dry.

Prime with Cav-Grip III Primer. Apply Primer by spray, brush or with a long nap roller at the applicable coverage rate noted above. At 75 F allow primer to dry 1 hour minimum.

Primer has a satisfactory cure when it will not transfer when touched. Prime only areas to be waterproofed the same day. Re-prime if area becomes dirty.

3. Application: Apply VapAir Seal MD Air and Vapor Barrier to the metal deck from low to high point, in a shingle fashion, so that laps will shed water. Overlap all edges at lease 2- 1/2". End laps shall be staggered. Place either a 6” wide section of 24 gauge sheet metal or a 6” wide section of VapAir Seal MD directly on the metal under each end lap, perpendicular to the end lap, to ensure a solid surface to roll the end lap together. Seams and end laps must be rolled with a 2” seam roller or stand-up seam roller. Place membrane carefully so as to avoid wrinkles and fish mouths. Immediately after installation, broom the sheet to ensure proper contact to the metal.

4. Insulation Installation: Ensure surface of VapAir Seal MD Air and Vapor Barrier is dry prior to installing insulation. Place insulation over the surface and mechanically fasten to the roof deck and adhere subsequent layers with Flexible FAST Adhesive in accordance with this Carlisle Specification.

3.03 INSTALLATION PLACEMENT

A. Install insulation or membrane underlayment over the substrate with boards butted tightly together with no joints or gaps greater than 1/4 inch. Stagger joints both horizontally and vertically if multiple layers are provided.

B. Secure the first layer of insulation to the substrate with the required mechanical fasteners or insulation adhesive where applicable and install subsequent layers of insulation in Carlisle Flexible FAST Adhesive in accordance with the manufacturer’s specifications.

1. Concrete Decks: Adhere base layer to vapor barrier with Flexible Fast

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2. Metal Decks: Fasten base layer to metal deck

3. Tectum Decks: Fasten base layer to tectum deck Install base sheet with impact fasteners and adhere all layers of insulation with Flexible Fast.

4. Gypsum Decks: Install base sheet with impact fasteners and adhere all layers of insulation with Flexible Fast.

3.04 MEMBRANE PLACEMENT AND BONDING

A. Unroll and position membrane without stretching. Allow the membrane to relax for approximately 1/2 hour before bonding. Fold the sheet back onto itself so half the underside of the membrane is exposed.

B. Apply the Bonding Adhesive in accordance with the manufacturer’s published instructions and coverage rates, to both the underside of the membrane and the substrate. Allow the adhesive to dry until it is tacky but will not string or stick to a dry finger touch.

1. Roll the coated membrane into the coated substrate while avoiding wrinkles. Brush down the bonded half of the membrane sheet with a soft bristle push broom to achieve maximum contact.

2. Fold back the unbonded half of the membrane sheet and repeat the bonding procedure.

C. Install adjoining membrane sheets in the same manner, overlapping edges approximately 4 inches. Do not apply bonding adhesive to the splice area.

3.05 MEMBRANE SPLICING

A. Position membrane sheet to allow for required splice overlap. Mark the bottom sheets with an indelible marker approximately 1/4” to 1/2” from the top sheet edge. The pre-marked line on the membrane edge can also be used as a guide for positioning splice tape.

B. When the membrane is contaminated with dirt, fold the top sheet back and clean the dry splice area (minimum 3” wide) of both membrane sheets by scrubbing with clean natural fiber rags saturated with Sure-Seal Weathered Membrane Cleaner. When using Sure-Seal (black) PRE- KLEENED membrane, cleaning the splice area is not required unless contaminated with field dirt or other residue.

C. Apply EPDM Primer to splice area and permit to flash off. Primer must be applied to both the top membrane layer and the bottom membrane layer.

D. When adhering Factory Applied Tape (FAT), pull the poly backing from FAT beneath the top sheet and allow the top sheet to fall freely onto the exposed primed surface. Press top sheet on to the bottom sheet using firm even hand pressure across the splice towards the splice edge.

E. For end laps, apply 3” or 6” SecurTAPE to the primed membrane surface in accordance with the manufacturer’s specifications. Remove the poly backing and roll the top sheet onto the mating surface.

F. Tape splices must be a minimum of 2-1/2” wide using 3” wide (Butyl/EPDM) SecurTAPE that is a minimum 25-mil thick. SecurTAPE must extend 1/8” minimum to 1/2” maximum beyond the splice edge. Field splices at roof drains must be located outside the drain sump.

Note: For projects where a 90-mil membrane OR 20-year or longer System Warranty is specified, splice enhancements are required. Refer to Carlisle Sure-Seal/Sure-White Roofing System Specification.

G. Immediately roll the splice using positive…