Commercial Roofing in Hamtramck, MI
Mixed-use buildings in Hamtramck, MI put a shop at street level and, often, a second use overhead, and the roof between them has to protect both. The city's Central Business District rules allow customer-facing retail, food service, financial offices, light commercial activity and combined commercial and residential development, and its ordinance puts weight on preserving historic buildings. For a roof, that mix means older parapet walls, small low-slope sections, and rooftop equipment that the city wants screened from view. Each of those choices changes where water goes.
We inspect and repair these roofs with the access constraints of a tight downtown block in mind. Written findings come first: what is sound, what is failing, what can be patched, and what should be planned. The owner then chooses with a record on the table.
Storefronts, Upper Floors and Shared Walls
A roof over a ground-floor shop and an apartment or office above is a different problem from a roof over an empty warehouse. A slow leak reaches finished ceilings, wiring and a tenant's belongings, and the owner often learns about it from a phone call, not an inspection. On a first walk we trace water from the interior stain back along the deck and flashing to the entry point, because on older masonry blocks the visible mark is usually a few feet from the real opening.
Where two buildings share a wall, the flashing at that wall belongs to both roofs and tends to fail first. We examine counterflashing, mortar joints above the membrane, and the sealant at wall terminations. A flashing repair done early is small. The same failure left through two winters often means wet insulation and a larger repair boundary.
Small downtown roofs also hide their age. A membrane that looks intact from a ladder can have wet insulation under it, which shows up as a soft spot underfoot or a cold patch on an infrared scan. We walk the field in a grid, press on suspect areas, and mark them on a roof plan, so the owner sees the size of the problem before choosing between a local repair and a larger one.
Screened Equipment and Curb Details
Hamtramck's downtown rules require roof-mounted appliances to be screened from view. Screens, platforms and their supports are attachments to the roof, and each attachment is a penetration or a loaded point. We look at how a screen frame is fastened, whether it blocks drainage toward a scupper, and whether the membrane under a rail is protected from foot traffic and abrasion. Screening that traps leaves and snow against a curb can hold water at the exact spot where flashing is thinnest.
When an owner adds or replaces a unit, we review the curb and support before the equipment arrives, so the flashing, the walkway pad and the screen can be sequenced together. Whether a given screen design meets the city's requirements is a question for the owner and the city. Our part is the roof assembly under it.
Historic Parapets and Roof Edges
The ordinance's priority on historic-building preservation makes the roof edge the first place we look. Older parapets hold moisture in brick and mortar, and coping joints open with each freeze. Water then runs behind the wall flashing and shows up inside as a stain on a plaster ceiling or a painted wall. Replacing a membrane without addressing the parapet gives the owner a new roof and the same leak.
We probe wall terminations, test sealant, and record failing coping and edge metal with photographs. Preservation-minded repairs usually favor matching the visible profile of the edge while upgrading what the eye cannot see, such as the flashing, the substrate and the drainage behind it. The written findings separate cosmetic items from items that let water in, so the owner can set a sensible order.
Rear Service Areas and Staging
The same ordinance places loading docks and service areas in rear yards, which is where a roofing crew will also want to stage. On a narrow lot, that means shared access with delivery trucks, trash pickup and tenants' parking. We plan lift position, material staging and debris chutes so they do not block a dock during delivery hours, and we mark off the ground below an active work area with barriers and a spotter.
For restaurants and food retailers in the district, kitchen exhaust is the other constraint. Grease on a membrane near a hood shortens its life and makes a surface slippery. A restaurant roof may need a grease-resistant sheet, a splash-guard under the exhaust, and a cleaning routine on the maintenance calendar. We write those items into the scope so the owner sees them before the work begins.
Pedestrian traffic matters on a walkable block. We set up covered walkways where a lift or hoist crosses the sidewalk, and we schedule heavy material deliveries before shops open when the street allows it.
Winter Water in Small Roof Sections
Dearborn's yearly 30.8 inches of snow, mostly November through April, sit inside 35.05 inches of total precipitation, and a flat roof in Hamtramck faces the same winter pattern: snow packs against parapets, thaws send water toward a single drain, and the drain bowl freezes. On a small roof, one blocked outlet can put water against a wall within a day.
Our advice is a drain and scupper check in autumn ahead of snow, another once the first thaw arrives and a third in spring, each photographed bowl by bowl. A downtown owner can combine these with preventive maintenance visits and keep one running record, which is helpful at sale, refinance or insurance renewal. Owners with buildings in Detroit or Warren can have those visits follow the same format.
Commercial Roofing Questions
Does a rooftop unit screen change how the roof should be flashed?
It adds attachment points and can slow drainage. We check how the screen frame is fastened to the curb or deck, keep a clear path for water to reach the drain, and protect the membrane under rails and legs. If a screen is added to an existing roof, the flashing at each post is reviewed before the equipment is set.
How can an apartment above a shop stay dry while the roof is open?
We open the roof in small sections and dry in each one by day's end. Tenants get notice of the hours of noisy work, the lift position and any entrance changes. If a leak has already reached a ceiling below, we photograph it before work starts and again when the section is closed, so the record is clear.
What do you inspect on a historic parapet?
Coping joints, mortar and brick above the membrane, wall flashing, through-wall scuppers and the sealant at every termination. Old parapets hold water for days after a thaw, and we sometimes probe with a moisture meter to see how far it has traveled. Findings are ranked by whether they let water in.
Who decides whether a roof repair needs a permit or design review in the downtown district?
The city's enforcing authority does, and the answer can change with the scope. Michigan lists the 2021 building code as current, with the 2021 commercial energy code effective April 22, 2025. We write our assumptions about code and insulation into the scope, and the owner confirms them with the city before a price is final.
Can restaurant exhaust damage a roof in a few seasons?
Grease and heat both attack standard membranes near a hood, leaving soft, discolored sheet and flashing that lifts. A sheet that tolerates grease, a catch pan under the fan and cleaning on a set schedule prevent most of it. We check the sheet within several feet of every exhaust fan on the first walk and record what we see.
Schedule a Hamtramck roof inspection
Tell us the building's use, who is under the roof and where water has appeared. We will document the parapets, flashing, equipment curbs and drains in writing with photographs, and the record will support your decision on repair or replacement. Emergency response is available around the clock.
