Attachment J - Cass Tech HS Inspection Report.pdf
PDF 3 MB Posted
- Solicitation number
- RFP DET 270000000151 1
- Issued by
- Wayne County, Detroit City, Michigan
About this file
This is a roof inspection report for Detroit Public Schools' Cass Technical High School, located at 2501 2nd Avenue, Detroit, Michigan 48201, conducted on April 24, 2026. The inspection evaluated the condition and remaining service life of the existing roof system to inform capital planning and renovation decisions. The facility contains 23 roof areas (A through Y) totaling approximately 85,000 square feet, with most roof systems originally installed in 2003/2004. The inspection identified that Roof Areas A-W require complete removal and replacement, while Roof Areas X and Y (metal panel standing seam systems) require no action at present. The recommended scope of work includes removing existing roof systems down to the structural steel deck and installing an R-30 insulation system with a fully-adhered 60-mil EPDM membrane, which would be eligible for a 20-year warranty.
The estimated construction cost for the full roof replacement project is $2,482,000.00. The inspection revealed significant deficiencies across most roof areas, including membrane blisters, active leaks, open flashing, and moisture infiltration, as all core samples collected during the inspection showed wet conditions and signs of moisture damage. The existing systems consist primarily of granule surface modified bitumen roof membranes installed in 2003/2004, with some areas having received a rubberized asphalt coating in 2021. Remaining roof life estimates are based on the age of the systems, visual inspection findings, and the assumption that no maintenance has been performed. The report provides detailed specifications for each roof area, including size, height, structural slope, and drainage configuration to support budgeting and project planning.
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Text version
Detroit Public Schools – Cass Technical Hich School
2501 2nd Ave.
Detroit, MI 48201
June 10, 2026
Detroit Public Schools – Cass Technical Hich School
Table of Contents
Executive Summary Page 3
Roof Plan Page 4
Roof Area Descriptions Page 5
Roof Area Photos Page 14
EXECUTIVE SUMMARY
On April 24, 2026 a visual inspection of the existing roof system was performed. The purpose of this inspection was to determine the estimated surface life left of the existing roof system. All roof were installed in 2003/2004. Roof Areas A-S existing systems consisted of a granule surface modified bitumen roof membrane which was coated in 2021 with a rubberized asphalt coating. Roof
Areas T, U, V & W existing system consisted of the original granule surface modified bitumen roof membrane. Roof Areas X & Y consisted of an existing metal panel standing seam roof system.
Note: All cores that were taking were wet and shoed signs of moisture.
Observations & Recommendations:
Roof Areas A-W: Remove existing roof systems system down to the structural steel deck. Install a
R-30 Insulation system with a fully-adhered 60-mil EPDM membrane. This system is eligible for a
20 year warranty.
Roof Areas X & W: No action required at this time
Estimated Construction Costs:
Full replacement with a R-30 Insulation System with a fully-adhered 60-mil EPDM: $2,482,00.00
ROOF PLAN:
Note: Remaining life of existing roof systems is based on the estimated age of the roofs, visual inspection and assuming no maintenance being performed.
ROOF AREA DESCRIPTIONS:
Roof Area ID: A
Size: 11,007 sf.
Year Installed: 2003/2004
Height: 95 ft
Structural Slope: None
Drainage: Roof Drains
Roof Area ID: B
Size: 1,800 sf.
Year Installed: 2003/2004
Height: 75 ft
Roof Area ID: C
Size: 18,360 sf.
Year Installed: 2003/2004
Height: 75 ft
Roof Area ID: D
Size: 915 sf.
Year Installed: 2003/2004
Height: 75 ft
Drainage: Eave
Roof Area ID: E
Size: 465 sf.
Year Installed: 2003/2004
Height: 77 ft
Roof Area ID: F
Year Installed: 2003/2004
Height: 77 ft
Roof Area ID: G
Size: 435 sf.
Year Installed: 2003/2004
Height: 85 ft
Drainage: Roof Drain
Roof Area ID: H
Size: 2,399 sf.
Year Installed: 2003/2004
Height: 55 ft
Roof Area ID: I
Size: 8,649 sf.
Year Installed: 2003/2004
Height: 45 ft
Roof Area ID: J
Size: 1,620 sf.
Year Installed: 2003/2004
Height: 45 ft
Roof Area ID: K
Size: 338 sf.
Year Installed: 2003/2004
Height: 60 ft
Roof Area ID: L
Size: 492 sf.
Year Installed: 2003/2004
Height: 53 ft
Roof Area ID: M
Size: 3,960 sf.
Year Installed: 2003/2004
Height: 70 ft
Roof Area ID: N
Size: 4,758 sf.
Year Installed: 2003/2004
Height: 35 ft
Roof Area ID: O
Size: 338 sf.
Year Installed: 2003/2004
Height: 53 ft
Roof Area ID: P
Size: 370 sf.
Year Installed: 2003/2004
Height: 40 ft
Roof Area ID: Q
Year Installed: 2003/2004
Height: 40 ft
Roof Area ID: R
Size: 937 sf.
Year Installed: 2003/2004
Height: 40 ft
Roof Area ID: S
Size: 2,534 sf.
Year Installed: 2003/2004
Height: 40 ft
Roof Area ID: T
Size: 1,185 sf.
Year Installed: 2003/2004
Height: 12 ft
Structural Slope: 1/8-inch
Roof Area ID: U
Size: 1,197 sf.
Year Installed: 2003/2004
Height: 12 ft
Roof Area ID: V
Size: 2,534 sf.
Year Installed: 2003/2004
Height: 15 ft
Roof Area ID: W
Size: 1,240 sf.
Year Installed: 2003/2004
Height: 15 ft
Roof Area ID: Y
Size: 15,500 sf.
Year Installed: 2003/2004
Height: 50 ft
Structural Slope: 8:12
Roof Area ID: X
Size: 9000 sf.
Year Installed: 2003/2004
Height: 90 ft
Structural Slope: 8:12
ROOF AREA PHOTOS:
Membrane blisters Membrane blisters
Active leak Open flashing
Overview
Existing wall ladder – Needs to be replaced
Open flashing Overview
Vegetation growing on roof
Existing repairs made to drain sump/membrane blisters
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