2025 0124 BHS District-wide Roofing Addendum #1.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 24, 2025

Addendum Number: 1

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

TTL – Title Sheet ADD: List Alternates provisions

LIST OF ALTERNATES:

Alternate #1: Plastic Sheeting Floor Protection Add to the Base Bid #2 (Conant Elementary School) 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. Contractor to refer to specifications for further information.

B2.51 – Bloomfield Hills High School Enlarged Roof Plan ADD: General Note G24

G24. 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.

ADD: Work Note #35

35. Prefinished metal gutter and downspout to grade. Slope gutter to downspout location and provide concrete splash block on grade.

ADD: Work Note #36

36. 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.

C2.51 – Conant Elementary School Enlarged Roof Plan ADD: General Note G24

G24. 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.

ADD: Work Note #35

35. Prefinished metal gutter and downspout to grade. Slope gutter to downspout location and provide concrete splash block on grade.

ADD: Work Note #36

36. 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.

ADD: Work Note #36 to roof area G

C2.52 – Conant Elementary School Enlarged Roof Plan ADD: General Note G24

G24. 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.

ADD: Work Note #35

35. Prefinished metal gutter and downspout to grade. Slope gutter to downspout location and provide concrete splash block on grade.

ADD: Work Note #36

36. 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.

ADD: Work Note #36 at several locations to roof area I REVISE: Drawing 2/C2.52 (Roof Area D.1) and notes as indicated.

E2.51 – Eastover Elementary School Enlarged Roof Plan ADD: General Note G24

G24. 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.

ADD: Work Note #35

35. Prefinished metal gutter and downspout to grade. Slope gutter to downspout location and provide concrete splash block on grade.

ADD: Work Note #36

36. 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.

SPECIFICATION REVISIONS

Attachment A – Proposal Form ADD: Item C under section 1.02 – Bid Documents C. Requirements for Alternate Bids:

1. The Bidder is required to provide a bid price for each Alternate Work Item that includes any change in cost that may be incurred, or adjustment that may be required, if Alternate Work items are added to the scope of the project. No subsequent “extras” will be considered for coordination or incidentals required to complete Alternate Bid Work items.

2. Award of this contract will be based upon the Base Bid or Base Bid and Alternate Work Items as selected by the Owner.

3. All selected Alternate Work Items must be completed within the contract schedule included in Part E of this Section.

ADD: Item D under section 1.02 – Bid Documents D. Lump Sum Pricing for Alternate Work Items Alternate Bid – Item #C1 – Add to the Base Bid #2 (Conant Elementary School) 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. Approximate floor area to be covered is 1,590 sf (Roof Area G) and 4,386 sf (Roof Area I)

CLARIFY: Subsequent sections under 1.02 previously included have been re-numbered accordingly due to the above insertions.

CLARIFY: Item F under section 1.02 – Bid Documents to add a line for each Base Bid to indicate the cost of the bonds that has been included within the Base Bid amounts for each building.

Section 00 0110 – Table of Contents ADD: Item F under section 2.01 Division 01 – General Requirements F. 01 2300 – Alternates

Section 01 2300 - Alternates ADD: Entire specification section as new (previously not included)

Section 07 5323 - EPDM Thermoset Single-Ply Roofing – Carlisle CHANGE: Section 1.01, Part A FROM: The Bloomfield Hills School District Roof Replacement Project includes two different schools. Schools included are: Way 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.

TO: The Bloomfield Hills School District Roof Replacement Project includes three different schools. Schools included are: Bloomfield Hills High School, Conant Elementary School, and Eastover Elementary School. Jacob McDermott will act as the Owner’s Representative and may be contacted regarding any questions or for a pre-bid job site inspection.

GENERAL

Non-Mandatory Pre-Bid Meeting Bidders sign-in list is attached for reference for those that attended the non-mandatory pre-bid meeting.

Pre-Bid Meeting Agenda Agenda is attached for reference only as an outline of our meeting. No information in the agenda should be considered binding. Refer to drawings and specifications for contractual conditions.

Pre-bid Meeting Questions and Answers Question 1: On Roof Area “I” at Conant, is that phenolic insulation?

Answer 1: It appears that it might be, but this has not been confirmed. It would be up to the contractor to perform its own roof cores to verify. Refer to General Note G9 on the enlarged roof plans for note relating to this.

Question 2: Are there site improvement projects (i.e. parking lots, playgrounds) that will be occurring at these schools this summer?

Answer 2: No, there are no site improvements being done at any schools, just interior work.

Clarifications Item 1: Contractor will coordinate and work with Owner’s separate mechanical and electrical contractors for rooftop items that are required to be raised, modified, abandoned, etc. These companies will be paid by the contractor from the allowances included. A coordination meeting will occur after contract-award for all parties to identify each component that needs to be raised, modified, abandoned, etc. Any unused and/or abandoned items that are identified will be removed by the roofing contractor.

Item 2: Any existing abandoned equipment rail, capped curb, sanitary vents, etc. should be removed if possible (whether particularly indicated on the drawings or not).

Item 3: Contractor is responsible to infill the roof deck at all removed caps, removed skylights, etc. as specified on the documents.

Item 4: Due to the inclement weather, site visits are going to be scheduled for Monday. The plan will be to start at Conant Elementary School at 10:00 a.m., then follow to Bloomfield Hills High School then Eastover Elementary School. It is anticipated that we will spend approximately 30-minutes at each building.

© Ehresman Architects

TTLProject No. 6524

Bloomfield Hills Schools District-Wide Roofing Replacement

Title Sheet

Addendum #1: 24 January 2025

Permits & Bidding: 21 January 2024

Bloomfield Hills Schools 281 Enterprise Court, Suite 300 Bloomfield Hills, MI 48303 Contact Name: Mr. Jacob McDermott

Director of Physical Plant Services Contact Phone: (248) 420-7504

ARCHITECT:

LOCATION PLAN

NOT TO SCALE

LOCATION PLAN

NOT TO SCALE

APPLICABLE CODES:

MICHIGAN REHABILITATION CODE FOR EXISTING BUILDINGS: 2015 EDITION

MICHIGAN ENERGY CODE: 2015 EDITION

ASHRAE 90.1-2013:

USE GROUP:

GROUP E: EDUCATIONAL

LIST OF DRAWINGS

ARCHITECTURAL DRAWINGS:

TTL TITLE SHEET

A0.00 GENERAL INFORMATION

A0.50 MANUFACTURER'S ROOFING DETAILS

A0.51 MANUFACTURER'S ROOFING DETAILS

A0.52 MANUFACTURER'S ROOFING DETAILS

B0.01 BLOOMFIELD HILLS HIGH SCHOOL REPRESENTATIVE PHOTOGRAPHS

B0.02 BLOOMFIELD HILLS HIGH SCHOOL REPRESENTATIVE PHOTOGRAPHS

B2.50 BLOOMFIELD HILLS HIGH SCHOOL ROOF PLAN

B2.51 BLOOMFIELD HILLS HIGH SCHOOL ENLARGED ROOF PLAN

B2.52 BLOOMFIELD HILLS HIGH SCHOOL INSULATION LAYOUT PLAN (FOR REFERENCE ONLY)

C0.01 CONANT ELEMENTARY SCHOOL REPRESENTATIVE PHOTOGRAPHS

C0.02 CONANT ELEMENTARY SCHOOL REPRESENTATIVE PHOTOGRAPHS

C0.03 CONANT ELEMENTARY SCHOOL REPRESENTATIVE PHOTOGRAPHS

C2.50 CONANT ELEMENTARY SCHOOL ROOF PLAN

C2.51 CONANT ELEMENTARY SCHOOL ENLARGED ROOF PLAN

C2.52 CONANT ELEMENTARY SCHOOL ENLARGED ROOF PLAN

C2.53 CONANT ELEMENTARY SCHOOL INSULATION LAYOUT PLAN (FOR REFERENCE ONLY)

E0.01 EASTOVER ELEMENTARY SCHOOL REPRESENTATIVE PHOTOGRAPHS

E2.50 EASTOVER ELEMENTARY SCHOOL ROOF PLAN

E2.51 EASTOVER ELEMENTARY SCHOOL ENLARGED ROOF PLAN

E2.52 EASTOVER ELEMENTARY SCHOOL INSULATION LAYOUT PLAN (FOR REFERENCE ONLY)

Conant Elementary School 4100 West Quarton Road Bloomfield Hills, MI 48302

ROOF PLAN

NOT TO SCALE

Eastover Elementary School 2800 Kensington Road Bloomfield Hills, MI 48304

ROOF PLAN

NOT TO SCALE

BLOOMFIELD HILLS SCHOOLS

District-Wide Roofing Replacement

LOCATION PLAN

NOT TO SCALE

Bloomfield Hills High School 4200 Andover Road Bloomfield Hills, MI 48302

ROOF PLAN

NOT TO SCALE

LIST OF ALTERNATES:

ALTERNATE #1: PLASTIC SHEETING FLOOR PROTECTION

ADD TO THE BASE BID #2 (CONANT ELEMENTARY SCHOOL) 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. CONTRACTOR TO REFER TO SPECIFICATIONS FOR FURTHER

INFORMATION.

GASGASGASGAS

GAS

GAS

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GA

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GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS GAS

GAS

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.18.

REMOVE EXISTING SKYLIGHT (INFILL DECK AS REQUIRED PRIOR TO NEW ROOFING SYSTEM).19.

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)

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.

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:

· 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

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

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

ETC.

32.

31.

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.

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:

© Ehresman Architects

B2.51Project No. 6524

Bloomfield Hills Schools District-Wide Roofing Replacement

Enlarged Roof Plan

Addendum #1: 24 January 2025

Permits & Bidding: 21 January 2025

Bloomfield Hills High School

Scale: 1/8"=1'-0" Enlarged Roof Plan (Bloomfield Hills HS)

B2.51

ROOFTOP

HVAC

8" PER FOOT

TAPER INSULATION

8" PER FOOT

TAPER INSULATION

ROOF AREA "T" ROOF AREA "S"

ROOF AREA "V"

Scale: 1/8"=1'-0" Enlarged Roof Plan (Bloomfield Hills HS)

B2.51

ROOF AREA "O"

EXISTING ROOFING COMPOSITION

· GRAVELED BUILT-UP ROOF SYSTEM

· 1" PERLITE INSULATION

· 2" POLYISOCYANURATE INSULATION

· EXISTING GYPSUM ROOF DECK

EXISTING ROOFING COMPOSITION

· GRAVELED BUILT-UP ROOF SYSTEM

· 1" PERLITE INSULATION

· 2" POLYISOCYANURATE INSULATION

· EXISTING METAL ROOF DECK

EXISTING ROOFING COMPOSITION

· GRAVELED BUILT-UP ROOF SYSTEM

· 1" PERLITE INSULATION

· 2" POLYISOCYANURATE INSULATION

· EXISTING GYPSUM ROOF DECK

EXISTING ROOFING COMPOSITION

· GRAVELED BUILT-UP ROOF SYSTEM

· 1" PERLITE INSULATION

· 2" POLYISOCYANURATE INSULATION

· EXISTING GYPSUM ROOF DECK

REFER TO WORK NOTE #21

ROOFTOP

HVAC

8" PER

FOOT

TAPER

INSULATION

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TAPER INSULATION

8" PER FOOT

TAPER INSULATION

1 8" P

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1 8" P

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1 8" P

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REFER TO WORK NOTE #21

REFER TO WORK NOTE #34 IN THIS AREA

REFER TO NOTE #34

IN THIS AREA

GASGASGASGASGASGASGASGAS

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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)

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.

COUNTERFLASHING (MINIMUM 12" ABOVE MEMBRANE SURFACE).

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.

LEGEND:

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:

· 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

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

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

ETC.

32.

31.

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

C2.51Project No. 6524

Bloomfield Hills Schools District-Wide Roofing Replacement

Enlarged Roof Plan

Addendum #1: 24 January 2025

Permits & Bidding: 21 January 2025

Conant Elementary School

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

C2.51

HIGH POINT

ROOF AREA "F"

ROOF AREA "H"

ROOF AREA "G"

RE

FE

R

TO

W

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N

OT

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EXISTING ROOFING COMPOSITION

· GRAVELED BUILT-UP ROOF SYSTEM

· 11

2" POLYISOCYANURATE INSULATION

· 1

2" WOOD FIBER INSULATION

· 1

2" WOOD FIBER INSULATION

· EXISTING GYPSUM ROOF DECK

OPEN TO

COURTYARD

EXISTING ROOFING COMPOSITION

· GRAVELED BUILT-UP ROOF SYSTEM

· 2" POLYISOCYANURATE INSULATION

· 1

2" WOOD FIBER INSULATION

· 1

2" WOOD FIBER INSULATION

· EXISTING ACOUSTICAL METAL ROOF DECK

EXISTING ROOFING COMPOSITION

· GRAVELED BUILT-UP ROOF SYSTEM

· 11

2" POLYISOCYANURATE INSULATION

· 1

2" WOOD FIBER INSULATION

· 1

2" WOOD FIBER INSULATION

· EXISTING METAL ROOF DECK

ROOFTOP

HVAC

ROOF AREA "E"

EXISTING ROOFING COMPOSITION

· GRAVELED BUILT-UP ROOF SYSTEM

· 1" PERLITE INSULATION

· 2" POLYISOCYANURATE INSULATION

· EXISTING GYPSUM ROOF DECK

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INSULATION

HIGH POIN

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GASGASGASGASGASGASGASGASGASGASGASGASGASGASGASGASGASGASGASGASGASGASGASGASGASGASGAS

GAS

GAS

GAS

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GAS

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.18.

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)

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.

COUNTERFLASHING (MINIMUM 12" ABOVE MEMBRANE SURFACE).

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.

LEGEND:

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:

· 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

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

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

ETC.

32.

31.

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

C2.52Project No. 6524

Bloomfield Hills Schools District-Wide Roofing Replacement

Enlarged Roof Plan

Addendum #1: 24 January 2025

Permits & Bidding: 21 January 2025

Conant Elementary School

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

C2.52

ROOF AREA "I"

ROOF AREA "J"

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

C2.52

EXISTING ROOFING COMPOSITION

· GRAVELED BUILT-UP ROOF SYSTEM

· 1

2" FIBERGLASS INSULATION

· 21

2" FOAM INSULATION

· EXISTING ACOUSTICAL METAL ROOF

DECK

OPEN TO

COURTYARD

EXISTING ROOFING COMPOSITION

· SHINGLES

· EXISTING ROOF DECK (UNKNOWN)

EX

IS

TI

N

G

SL

OP

E

DN

EXISTING

SLOPE DN.

EX

IS

TI

N

G

SL

OP

E

DN

EXISTING

SLOPE DN.

EXISTIN

G

SLOPE DN.

EXISTING

SLOPE DN.

EX

IS

TI

NG

SL

OP

E

DN

EX

IS

TI

N

G

SL

OP

E

DN

EX

IS

TI

N

G

SL

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E

DN

EXISTING

SLOPE DN.

EXISTING

SLOPE DN.

ROOF AREA "D.1"

EXISTING ROOFING COMPOSITION

· FULLY-ADHERED ROOFING MEMBRANE

· 2" POLYISOCYANURATE INSULATION

· EXISTING WOOD ROOF DECK

H

IG

H P

OI

N

T

HIGH POINT

H

IG

H P

OI

N

T

H

IG

H P

OI

N

T

8" PER FOOT

TAPER INSULATION

8" PER FOOT

TAPER INSULATION

8" PER FOOT

TAPER INSULATION

8" PER FOOT

TAPER INSULATION

8" PER FOOT

TAPER INSULATION

8" PER

FOOT

TAPER

INSULATION

8" PER

FOOT

TAPER

INSULATION

8" PER

FOOT

TAPER

INSULATION

8" PER

FOOT

TAPER

INSULATION

H

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8" PER

FOOT

TAPER

INSULATION

1 8" P

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8" PER FOOT

TAPER INSULATION

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:

· 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

·…