27-0001 Attachment O - Wayne Assessment Report.pdf
PDF 3 MB Posted
- Solicitation number
- RFP DET 260000002534 1
- Issued by
- Wayne County, Detroit City, Michigan
About this file
This is a Wayne Assessment Report prepared for Detroit Public Schools regarding roof conditions at Wayne Elementary School, located at 10633 Courville Street in Detroit, Michigan. The assessment, completed on March 4, 2026, evaluated the remaining service life of the existing roof system across 16 distinct roof areas (A through P) totaling approximately 25,772 square feet. The report recommends complete removal of all existing roof systems down to the structural concrete deck, followed by installation of new roofing assemblies. For Roof Areas A, B, C, D, E, G, J, N, and O, the specification calls for new self-adhering underlayment, 2-layers of 2-1/2 inch polyiso insulation, 1/2-inch high density polyiso, and a fully adhered 60-mil EPDM membrane. For Roof Areas F, H, I, K, L, M, and P, the specification includes new self-adhering underlayment, one 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.
All roof areas were originally installed prior to 1995 and exhibit significant deterioration, including severe membrane deterioration, exposed felts, ponding water staining, masonry wall deterioration, and failed repairs. The estimated construction cost for the complete roof replacement project is $930,426.00 for the R-30 Insulation System with fully-adhered 60-mil EPDM roofing. The roof areas vary in size from 44 to 4,750 square feet, with heights ranging from 10 to 36 feet and drainage systems consisting of roof drains, eave edges, or gutters.
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Text version
Detroit Public Schools – Wayne Elementary School
10633 Courville Street Detroit, MI 48224
March 4th, 2026
Detroit Public Schools – Wayne Elementary School
Table of Contents
Executive Summary Page 3
Roof Plan Page 4
Roof Area Descriptions Page 5
Roof Area Photos Page 11
EXECUTIVE SUMMARY
On March 4, 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, C, D , E, G & I existing systems consisted of an existing BUR aggregate surface, 1-inch fiber glass insulation over concrete deck. Roof Areas B, F, H, J, L, M, N O & P existing system consisted of an existing modified bitumen with granular surface, 1-inch fiber glass insulation over concrete deck.
Observations & Recommendations:
Roof Areas A, B, C, D, E, G, J, N & O: Remove existing roof system down to the existing structural concrete deck. Install new self-adhering underlayment, 2-layers of 2-1/2 inch polyiso, 1/2-inch high density polyiso and a fully adhered 60-mil EPDM membrane.
Roof Areas F, H, I, K, L, M & P: Remove existing roof system down to the existing structural Concrete deck. Install new self-adhering underlayment, one 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: $930,426.00
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: 3,596 sf.
Year Installed: Pre 1995
Height: 28 ft
Structural Slope: 1/8 per foot min.
Drainage: Roof Drains
Roof Area ID: B
Size: 2,794 sf.
Year Installed: Pre 1995
Height: 32 ft.
Structural Slope: Barrel
Drainage: Eave Edge
Roof Area ID: C
Size: 4,243 sf.
Year Installed: Pre 1995
Height: 28 ft.
Roof Area ID: D
Size: 1,150 sf.
Year Installed: Pre 1995
Height: 27 ft
Roof Area ID: E
Size: 2,280 sf.
Year Installed: Pre 1995
Height: 27 ft.
Roof Area ID: F
Size: 2,288 sf.
Year Installed: Pre 1995
Height: 32 ft.
Structural Slope: 1/8” per foot.
Roof Area ID: G
Size: 1,698 sf.
Year Installed: Pre 1995
Height: 28 ft
Roof Area ID: H
Size: 165 sf.
Year Installed: Pre 1995
Height: 15 ft.
Structural Slope: 1/8” per foot
Roof Area ID: I
Size: 4,750 sf.
Year Installed: Pre 1995
Height: 15 ft.
Roof Area ID: J
Size: 336 sf.
Year Installed: Pre 1995
Height: 18 ft.
Structural Slope: 1/4” per foot .
Drainage: Eave
Roof Area ID: K
Size: 184 sf.
Year Installed: Pre 1995
Height: 16 ft.
Roof Area ID: L
Size: 128 sf.
Year Installed: Pre 1995
Height: 10 ft.
Roof Area ID: M
Size: 64 sf.
Year Installed: Pre 1995
Height: 12 ft.
Roof Area ID: N
Size: 1,686 sf.
Year Installed: Pre 1995
Height: 12 ft.
Structural Slope: 1/4” per foot.
Drainage: Gutter
Roof Area ID: O
Size: 44 sf.
Year Installed: Pre 1995
Height: 36 ft.
Structural Slope: 1/4” per foot
Drainage: Gutter
Roof Area ID: P
Size: 165 sf.
Year Installed: Pre 1995
Height: 36 ft.
ROOF AREA PHOTOS:
Severe membrane deterioration/felts showing
Existing repair to masonry wall
Ponding water staining caused by poor slope
Masonry wall deterioration
Overview Overview
Deteriorating masonry wall/overview overview
Overview
Overview
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