Roofing 21-002 Miller Stone Compiled.pdf
PDF 6 MB Posted
- Attached to
- BATTLE CREEK PUBLIC SCHOOLS ROOFING PROJECT State and local contract opportunity
- Solicitation number
- RFP BATT 210000001147 1
- Issued by
- Calhoun County, Michigan
About this file
This is a roofing inspection report for Battle Creek Public Schools, specifically for the Miller Stone Adult Education facility located at 77 Capital Avenue NE in Battle Creek, Michigan. The inspection was completed in early December 2020 and assessed the condition of approximately 8,500 square feet of roofing across four distinct sections: Section 1 (3,500 SF of modified bitumen), Section 2 (3,400 SF of asphalt shingles), Section 3 (200 SF of modified bitumen), and Section 4 (1,400 SF of modified bitumen). The visual assessment, thermal moisture scan, and core sampling identified that the overall roofing systems were in fair condition but showing age-related deficiencies. The inspection results identified 2,000 square feet (23.5% of total roof area) of wet insulation, with areas of ponding water concentrated in specific zones.
The inspection report categorizes recommended work into three priority areas: 3,400 square feet requiring full replacement (shingle roof sections showing significant mineral loss and curling), 5,100 square feet requiring retrofit or restoration (modified bitumen sections with fair field conditions but failing repairs and flashing details), and no areas requiring basic restoration. Key findings indicate that the shingle roof system requires replacement due to mineral loss and UV exposure, while the flood and gravel modified bitumen sections can be restored or retrofitted rather than fully replaced if maintenance is performed properly. The report notes that building code compliance requirements would necessitate substantial additional insulation if a complete tear-off is performed, which would significantly increase project costs and extend the return on investment timeline beyond the projected roof lifecycle. The district must provide further direction before final recommendations can be made regarding priority sequencing and system selection.
View the file
Other files for this state and local contract opportunity
| File | Type | Posted |
|---|---|---|
| Roofing 21-002 Clarification 01-4.pdf | ||
| Roofing 21-002 Admin-Willard Roof Report-2.pdf | ||
| 21-002 Specifications 2021 BCPS District Roofing-1.pdf | ||
| Project Manual - 21-002 BCPS District Roofing 2021-2.pdf |
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Text version
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SHEET NO.
SHEET TITLE:
INSPECTION
REPORT
COVER
SHEET
A1
BATTLE CREEK PUBLIC SCHOOLS
MILLER STONE ADULT EDUCATION
77 CAPITAL AVE NE
BATTLE CREEK, MI 49037
NOTES
DRAWING INDEX
LOCATION MAPWORK PERFORMED
SITE MAP
A1 - COVER SHEET
A2 – ROOF PLAN
T1 – THERMAL SCAN
D1 – DRON PHOTOS
C1 – CONDITIONS
C2 – CONDITIONS
C3 – CONDITIONS
C4 – CORE DATA
P1 – PRIORITY SUMMARY
R1 – ROOF SUMMARY
EXISTING ROOFING SYSTEMS:
- VISUAL ASSESSMENT
- THERMAL MOSITURE SCAN
- PRIORITY SUMMARY
- BUDGET PLANNING
Mineral Cap ModifiedFlood & Gravel Mod Bit
Asphalt Shingles
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SHEET NO.
SHEET TITLE:
INSPECTION
REPORT
SYSTEM OVERVIEW:
SECTION: SYSTEM TYPE: AREA:
SECTION #1: MOD BIT 3,500 SF
SECTION #2: SHINGLES 3,400 SF
SECTION #3: MOD BIT 200 SF
SECTION #4: MOD BIT 1,400 SF
TOTAL: 8,500 SF
ROOF
PLAN
A2
Flood & Gravel Mod Bit
Coated Mineral Cap Mod Bit
Shingles
Mineral Mod Bit
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SHEET TITLE:
INSPECTION
REPORT
SYSTEM OVERVIEW:
SECTION: SYSTEM TYPE: AREA:
SECTION #1: MOD BIT 3,500 SF
SECTION #2: SHINGLES 3,400 SF
SECTION #3: MOD BIT 200 SF
SECTION #4: MOD BIT 1,400 SF
TOTAL: 8,500 SF
ROOF
PLAN
A2
3 4
RTU
HATCH
DRAIN
UNIT
EXHAUST
EXPANSION JOINT
DETAIL LEGEND
** CONTRACTOR IS RESPONSIBLE FOR VARIFYING SQUARE
FOOTAGE
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D1
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D1
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D1
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DETAILS
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DETAILS
N.T.S.D1
1 TYPICAL FIELD OF ROOF DETAIL
1) Details shown are representative of finished details. Contractors shall take into account existing insulation, new insulation, and the new roof system. Wood blocking shall be added to achieve the minimum flashing heights shown.
1) Details shown are representative of finished details. Contractors shall take into account existing insulation, new insulation, and the new roof system. Wood blocking shall be added to achieve the minimum flashing heights shown.
Detail Requirements
2) Deck types vary between roof areas and buildings. Contractor must verify roof decks and apply details accordingly.
1) Details shown are representative of finished details. Contractors shall take into account existing insulation, new insulation, and the new roof system. Wood blocking shall be added to achieve the minimum flashing heights shown.
Detail Requirements
2) Deck types vary between roof areas and buildings. Contractor must verify roof decks and apply details accordingly.
N.T.S.D1
2 TYPICAL PENETRATION
N.T.S.D1
4 TYPICAL EDGE DETAIL
N.T.S.D1
5 SPECIAL GUTTER DETAIL
N.T.S.D1
3 TYPICAL WALL DETAIL
Modif ied Base Sheet
½” Recover Board
Existing Roof
System
Modif ied Base Sheet
½” Recover Board
Existing Roof
System
Modif ied Base Sheet
½” Recover Board
Existing Roof System
Modif ied Base Sheet
½” Recover Board
Existing Roof System
Existing Roof System
Existing Gutter System
Existing Drip Edge
½” Recover Board
Modif ied Base Sheet
Fully Reinforced
Fluid Applied System
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SCAN
RESULTS
T1
THERMAL SCAN INFORMATION:
SECTION: WET INSULATION SQUARE
FOOTAGE:
TOTAL: 2,000 SF
TOTAL: 23.5%
THERMAL SCAN INFORMATION:
SECTION: WET INSULATION SQUARE
FOOTAGE:
TOTAL: 2,000 SF
TOTAL: 23.5%
IDENTIFIED WET VIA
MOISTURE SCAN
AREAS OF PONDING
WATER
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DRONE
PICTURES
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DRONE OVERVIEWS
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CONDITIONS
C1
SECTION #1
Roof Section Overview: The back corner of the roof is wet but the majority of the field is in fair condition.
An elaborate gutter and edge metal detail is in good condition and the drains were clear of debris.
Flashing against the vertical wall are in fair condition and properly counterflashed.
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CONDITIONS
C2
SECTION #2
Roof Section Overview: Singles are beginning to curl and have significant mineral loss.
Another example of mineral loss and the beginning of cupping at the single edge.
The roof had insulation sprayed to the underside of the deck. This prevents the need for ventilation of the shingle roof.
A gutter was added to prevent further damage to the wood siding but the gutter was placed to low and should be slip flashed under the drip edge.
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CONDITIONS
C3
SECTION #3 & 4
The mineral cap and flashing details are in fair condition.
Section Overview: The penthouse roof drain onto the lower roof hence the discoloration we see of the wall.
Another example of a repair completed at the roof edge.
A leak was improperly repaired at the roof edge and now water ponds in this corner.
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CONDITIONS
C4
- Wood Deck
- Vapor Barrier
- 1" Recovery Board
- Tapered Recovery Board
- Flood & Gravel Mod Bit
- Wood Deck
- Vapor Barrier
- 1" Recovery Board
- ½” Recovery Board
- Flood & Gravel Mod Bit
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PRIORITY
SUMMARY
P1
RESTORATION: 0 SF
RETROFIT: 5,100 SF
REPLACEMENT: 3,400 SF
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ROOF
SUMMARY
R1
ROOF SUMMARY:
VISUAL AND THERMAL MOISTURE INSPECTIONS WERE COMPLETED IN EARLY DECEMBER OF 2020. CORE SAMPLES WERE TAKEN TO VERIFY THE CURRENT SYSTEMS.
THE INSPECTIONS FOUND THAT OVERALL THE ROOFING SYSTEMS WERE IN FAIR CONDTION, BUT STARTING TO SHOW THE DEFICIENCES EXPECTED W ITH AN AGING ROOF.
MOST ROOF SECTIONS ONLY HAD MINOR PONDING WATER AND IN GENERAL THE FIELD OF THE ROOF WAS IN SERVICEABLE CONDITION. MOST OF THE ROOF DEFICIENCES
WERE FOUND AT THE FLASHING AND PENETRATION DETAILS. THE ROOF CAN BE BROKEN DOWN FUTHER INTO 2 MAIN CATEGORIES:
1. SHINGLE ROOF
- THE SINGLES ARE STARTING TO SHOW SIGNS OF SIGNIFIGANT MINERAL LOSS. OVER TIME THIS CAUSES THE SHINGLES TO BEGIN TO CURL AS THE ASPHALT MEMBRANE IS
EXPOSED TO UV AND BEGINS TO SHRINK.
- THE ROOF SYSTEM WAS “HOT DECKED” WHERE SPRAY FOAM INSULATION WAS APPLIED TO THE UNDERSIDE OF THE ROOF DECK. THIS PREVENTS THE NEED TO ADD
FURTHER VENTILLATION TO THE SHINGLE ROOF SYSTEM.
2. FLOOD AND GRAVEL MODIFIED BITUMEN
- AS NOTED ABOVE THE FIELD OF THE ROOF IN THESE SECTIONS IS IN FAIR CONDTION WITH ONLY MINOR TO NO PONDING WATER. WHERE THE MEMBRANE IS EXPOSED, AT
FLASHING DETIALS AND THE ROOF EDGE, MANY REPAIRS HAVE BEEN COMPLETED THAT ARE NOW STARTING FAILING OR MAGNIFYING PONDING ISSUES. A UNIQUE INTERAL
GUTTER SYSTEM IS WORKING WELL BUT LIMITS WHAT CAN BE DONE TO THE ROOF WITHOUT MAJOR RE-DESIGN.
THESE TYPES OF ROOF SYSTEMS ARE DESINGED TO LAST 25-30 YEARS. BECAUSE OF THE REDUNDANT NATURE OF THE MEMBRANE SYSTEM THEY HOLD UP BETTER TO
PONDING WATER. THE GRAVEL ON THE ROOF PROTECTS THE FIELD OF THE SYSTEM FROM UV DEGREDATION, FOOT TRAFFIC, AND WEATHER EVENTS LIKE HAIL. THE AREAS
OF THE ROOF THAT ARE SUSCEPTIBLE TO DAMAGE ARE THE EXPOSED FLASHINGS AND TREAMENT OF THE ROOF EDGE. THE COMPLETED INSPECTIONS VERIFIED THESE
EXPECTATIONS. WHEN THESE ROOF SYSTEMS ARE PROPERLY MAINTAINED THEY ARE DESIGNED FOR A RESTORATION OR RETROFIT AS OPPOSED TO NEEDING A FULL TEAR
OFF. AREAS OF THE ROOF THAT ARE SATURATED CAN BE REMEDIATED AS LONG AS THEY ARE ISOLATED.
RECOMMENDATIONS FOR THE FACILITY SHOULD ALSO TAKE INTO CONSIDERING BUILDING CODE. IF THE EXISTING ROOF SYSTEMS ARE FULLY TORN OFF, THE NEW ROOF
SYSTEM MUST BE BROUGH UP TO CURRENT BUILDING CODE. THIS WOULD NECESSITAE ADDING A SIGNIFICANT AMOUNT OF INSULATION. THIS IS A CONCERN BECAUSE
FLASHING HEIGHTS AND ROOF EDGES WERE NOT ORIGINALLY CONSTRUCTED TO ACCOMMODTE THE NEW REQUIRED LEVEL ON INSULATION. THIS WOULD GRATELY
INCREASE THE PROJECT COST WITH A RETURN ON INVESTMENT LONGER THAN THE PROJECTED LIFE CYCLE OF THE NEW ROOF.
FURTHER INFORMATION IS NECESSARY FROM THE DISTRICT BEFORE WE CAN MAKE THE FINAL RECOMMENDATIONS ON PRIORITY AND SYSTEM TYPES.
| Miller Stone Adult Ed Roof Report |
| Miller Stone Adult Ed Roof Report.vsdx |
| A1 |
| Adult Ed |
| Miller Stone Adult Ed Roof details |
| Miller Stone Adult Ed Roof Report.vsdx |
| Page-11 |
| Miller Stone Adult Ed Roof details |
| Miller Stone Adult Ed Roof Report.vsdx |
| D1 |
| Miller Stone Adult Ed Roof Report |
| Miller Stone Adult Ed Roof Report.vsdx |
| T1 |
| D1 |
| #1 |
| #2 |
| #3 |
| #4 |
| P1 |
| R1 |
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