27-0001 Attachment K - Burton Assessment Report.pdf
PDF 2 MB Posted
- Solicitation number
- RFP DET 260000002534 1
- Issued by
- Wayne County, Detroit City, Michigan
About this file
This is a roof assessment report for Detroit Public Schools' Burton International Academy located at 5536 St. Antoine Street in Detroit, Michigan, dated March 9, 2026. The visual inspection evaluated the condition and remaining service life of the existing roof system across nine distinct roof areas (A through I) totaling approximately 69,296 square feet. The assessment found that all roof areas, which were installed prior to 2000, feature deteriorated built-up roofing (BUR) systems exhibiting membrane deterioration, flashing failures, metal counterflashing corrosion, failed sealants, blistering, and compromised pitch pans. The inspection identified significant wear patterns including large repairs along gutter edges and roof-to-wall flashing issues, indicating the roofs have exceeded their serviceable life.
The assessment recommends complete roof system replacement for all areas, with Roof Areas A, B, C, D, E, G, and I requiring removal down to the existing structural steel deck and installation of a new system comprising 2-1/2 inch polyiso base layer, 1/8-inch tapered polyiso, 1/2-inch high-density polyiso, and a fully adhered 60-mil EPDM membrane. Roof Area F, which sits on a gypsum deck, requires a mechanically attached base sheet with the same membrane system. Area H specifications are not detailed in the recommendations. The total estimated construction cost for an R-30 insulation system with 60-mil EPDM membrane is $2,787,099.00. This assessment serves as the technical basis for the related Facility Master Plan Series 6 Roof Replacement contract opportunity for Detroit Public Schools.
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Text version
Detroit Public Schools – Burton International Academy
5536 St. Antoine Street Detroit, MI 48202
March 9th, 2026
Detroit Public Schools – Burton International Academy
Table of Contents
Executive Summary Page 3
Roof Plan Page 4
Roof Area Descriptions Page 5
Roof Area Photos Page 12
EXECUTIVE SUMMARY
On March 9, 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. Roof Areas A, B, C, D, E, G & I existing systems consisted of an existing BUR aggregate surface, 1/2-inch perlite, 1/2-inch perlite, tapered polyiso and 2-1/2 inch polyiso over steel deck. Roof Area F existing system consisting of a BUR aggregate surface, 1/2-inch perlite, 2- inch polyiso and 2-inch polyiso over a gypsum deck.
Observations & Recommendations:
Roof Areas A, B, C, D, E, G & I: Remove existing roof system down to the existing structural steel deck. Install base layer of 2-1/2 inch polyiso, 1/8-inch tapered polyiso, 1/2-inch high density polyiso and a fully adhered 60-mil EPDM membrane.
Roof Area F: Remove existing roof system down to the existing structural gypsum deck. Install mechanically attached, base sheet layer of 2-1/2 inch polyiso, 1/8-inch per foot tapered polyiso, 1/2-inch high density polyiso and fully-adhered 60-mil EPDM membrane.
Estimated Construction Costs:
R-30 Insulation System with a fully-adhered 60-mil EPDM: $2,787,099.00
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: 22,251 sf.
Year Installed: Pre 2000
Height: 16 ft
Structural Slope: None
Drainage: Roof Drains
Roof Area ID: B
Size: 4,320 sf.
Year Installed: Pre 2000
Height: 24 ft
Roof Area ID: C
Size: 8,703 sf.
Year Installed: Pre 2000
Height: 13 ft.
Roof Area ID: D
Size: 3,600 sf.
Year Installed: Pre 2000
Height: 13 ft.
Roof Area ID: E
Size: 4,860 sf.
Year Installed: Pre 2000
Height: 13 ft.
Roof Area ID: F
Size: 15,664 sf.
Year Installed: Pre 2000
Height: 28 ft.
Structural Slope: 1/8” per foot.
Roof Area ID: G
Size: 896 sf.
Year Installed: Pre 2000
Height: 16 ft
Roof Area ID: H
Size: 8,962 sf.
Year Installed: Pre 2000
Height: 24 ft.
Roof Area ID: I
Size: 40 sf.
Year Installed: Pre 1995
Height: 24 ft.
ROOF AREA PHOTOS:
Membrane deterioration Membrane flashing deterioration
Overview Membrane flashing deterioration
Large repair along gutter edge
Membrane blister
Metal counterflashing deterioration/failed sealant
Repair made to roof-to-wall flashing
Metal counterflashing deterioration/failed sealant/ Repair made to roof-to-wall flashing
Failed pitch pan/ no longer watertight
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