27-0001 Attachment N - Pasteur 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 Pasteur Assessment Report prepared for Detroit Public Schools regarding roof replacement needs at Pasteur Elementary School located at 19811 Stoepel Street, Detroit, Michigan. The assessment, completed on March 4, 2026, provides a comprehensive visual inspection of the existing roof system to determine remaining surface life and recommends complete roof replacement across multiple roof areas (A through K). The project involves removal of existing built-up roofing (BUR) aggregate surface systems down to structural decks, followed by installation of new self-adhering underlayment, polyiso insulation layers of varying thicknesses, and fully-adhered 60-mil EPDM membranes. Roof Areas A, B, C, D, F, G, H, I, J, and K will receive an R-30 insulation system, while Roof Area E, which sits over a structural steel deck, will receive a tapered polyiso system with similar EPDM membrane protection. The roof areas range in size from 63 square feet (Area D) to 15,915 square feet (Area J), with heights varying from 12 to 36 feet and multiple drainage configurations including roof drains, eave edges, gutters, and gutter systems.
The estimated construction cost for the R-30 insulation system with fully-adhered 60-mil EPDM membrane is $447,890.00. All existing roof systems were installed prior to 1995 and are no longer providing adequate protection, as evidenced by photographic documentation showing open flashing, flashing deterioration, splits, severe deterioration along perimeter edges, and exposed structural elements. The assessment indicates that remaining life of the existing roof systems is based on estimated age, visual inspection findings, and assumes no ongoing maintenance has been performed.
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Text version
Detroit Public Schools – Pasteur Elementary School
19811 Stoepel Street Detroit, MI 48221
March 4th, 2026
Detroit Public Schools – Pasteur Elementary School
Table of Contents
Executive Summary Page 3
Roof Plan Page 4
Roof Area Descriptions Page 5
Roof Area Photos Page 9
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, B, C, D, F, G, H, I, J & K existing systems consisted of an existing BUR aggregate surface, 1-inch fiber glass insulation over concrete deck. Roof Area E existing system consisted of an existing BUR aggregate surface, tapered perlite insulation over concrete deck.
Observations & Recommendations:
Roof Areas A, B, C, D, F, G, H, I, J & K: 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 Area E: Remove existing roof system down to the existing structural steel deck. Install new self-adhering underlayment, one layer of 2-1/2 inch polyiso, 1/4-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: $447,890.00
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: 3,211 sf.
Year Installed: Pre 1995
Height: 30 ft
Structural Slope: 1/8 per foot min.
Drainage: Roof Drains
Roof Area ID: B
Size: 2,386 sf.
Year Installed: Pre 1995
Height: 32 ft.
Structural Slope: 1/8 per foot.
Drainage: Eave Edge
Roof Area ID: C
Size: 2,743 sf.
Year Installed: Pre 1995
Height: 30 ft.
Structural Slope: 1/8 per foot min.
Roof Area ID: D
Size: 63 sf.
Year Installed: Pre 1995
Height: 36 ft
Structural Slope: 1/4" per foot.
Drainage: Gutters
Roof Area ID: E
Size: 3,577 sf.
Year Installed: Pre 1995
Height: 30 ft.
Structural Slope: None
Roof Area ID: F
Size: 253 sf.
Year Installed: Pre 1995
Height: 28 ft.
Structural Slope: 1/8” per foot.
Roof Area ID: G
Size: 1,378 sf.
Year Installed: Pre 1995
Height: 31 ft
Structural Slope: 1/8” per foot.
Roof Area ID: H
Size: 322 sf.
Year Installed: Pre 1995
Height: 30 ft.
Structural Slope: 1/4” per foot
Roof Area ID: I
Size: 198 sf.
Year Installed: Pre 1995
Height: 31 ft.
Structural Slope: 1/4” per foot
Roof Area ID: J
Size: 15,915 sf.
Year Installed: Pre 1995
Height: 12 ft.
Structural Slope: 1/8” per foot Min.
Roof Area ID: K
Size: 240 sf.
Year Installed: Pre 1995
Height: 12 ft.
Drainage: Gutter
Roof Area ID: L
Size: 240 sf.
Year Installed: Pre 1995
Height: 36 ft.
ROOF AREA PHOTOS:
We core cut Open flashing
Flashing deterioration Split in flashing
Split in flashing
Overview/stone coping
Open flashing lap Clay tile coping
Opening flashing Severe deterioration along perimeter edge
EPDM repair to parapet walls
Overview
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