Commercial Roofing in Wyandotte, MI
A low-slope commercial roof in Wyandotte, MI answers to the same winter as the rest of the Detroit area: months of snow, repeated thaw and a membrane that has to move with both. The nearby Dearborn weather station records 30.8 inches of snow in a normal year, mostly from November through April, and the roof assembly under that snow is only as sound as the detail that controls the water path. The first visit to a Wyandotte property is a matter of reading what is there: the membrane field, the drain bowls, the curb transitions and the edge metal.
The written findings that follow sort sound areas from failing ones and give the owner a repair boundary to work from. That is the purpose of a commercial roof inspection, and it comes before any price.
What Winter Asks of a Roof Assembly
Snow does its damage in stages. In NWS Detroit's normals January averages 14 inches of snow and February 12.5 inches, so a roof can carry weeks of accumulated weight before the first real thaw. Drifts build against parapets and rooftop units, and the load concentrates there. Whether a given Wyandotte building is designed for that weight is a structural question, and project snow loads still need code-specific checks for the actual site.
What we can read from the roof is how the water behaves once the snow starts to move. Meltwater runs toward the drains, and a drain bowl packed with debris backs it up at the low point. Ponded water then presses on laps and flashing from above while overnight freezing works at them from below. Repeated cycles open a seam that looked tight in October. Inspect drainage before the first snow and again after the first long thaw.
The First Walk, in Sequence
We check in sequence so nothing is skipped and nothing is guessed. The edges come first, because perimeter metal and coping take the wind and the thaw before any other part of the roof does. Next come the drain bowls and scuppers, then each curb transition where a rooftop unit, vent or skylight meets the membrane. The open field is walked last, with attention to laps, fasteners, blisters and any soft spots that suggest wet insulation underneath.
Each finding is photographed with its location marked on a roof plan. If a stain inside the building does not line up with a defect above, we trace the water path across the deck before anything is sealed, since water travels along the underside of a roof before it appears on a ceiling. Where wet insulation is suspected, an infrared moisture survey maps it so the owner is not paying to replace dry material.
Repair Boundaries and When They Hold
A patch holds if the field around it is sound and the failure stays isolated: a puncture from rooftop traffic, a cracked pipe boot, a lifted seam at a single corner. In those cases commercial roof repair is the right scope, and the repair boundary is drawn on the plan so a later leak can be traced against it.
The picture changes when insulation is wet across a wider area or when seams are opening in several places at once. A repair alone can hide the next weak point, and the owner pays for the same visit again. In that situation we lay out three paths with their cost drivers: a section replacement, a recover over dry insulation, or a full tear-off. Each path is tied to a reading, not an opinion, and the choice stays with the owner.
Planning Replacement Before It Becomes an Emergency
Remaining service life is a range, not a date, and it shortens when winters are hard on drainage. The state's current building code is the 2021 edition, in force since April 9, 2025, and its commercial energy code, also 2021, followed on April 22, 2025. How much of the energy code reaches the insulation depends on the scope of the replacement, so a tear-off is priced for more than the membrane.
A planned commercial roof replacement can be scheduled for a mild window, with materials ordered ahead and the tenants informed. An emergency replacement in January leaves the owner with whatever the weather permits. Cost and timing are driven by roof size, deck condition, the number of penetrations, insulation thickness and how many access windows the building allows.
Working Around an Occupied Building
Most commercial roofs sit over people at work. We agree on the access window, the staging area and the noise limits with the property manager before a crew arrives, and we keep the work area closed to foot traffic below. Entrances, loading docks and parking are protected from falling debris. Where a tenant runs sensitive equipment or stores goods that water would ruin, temporary protection goes in first.
Emergency response is available at any hour, including holidays. After a severe storm, a crew can tarp an open area and photograph the damage for a claim, then return for permanent work once the weather allows. The same record supports insurance claim documentation.
Tear-off is staged by section so the building is never left open overnight. Each evening the finished area is sealed to the existing roof with a temporary tie-in, and the day's photographs record where the seal sits. If forecasts turn, the crew closes the open section before the weather reaches it.
Seasonal Upkeep That Protects Service Life
A short visit each spring and fall protects a roof's remaining service life. We clear drain bowls and scuppers, probe seams, check sealant at penetrations and flashing, and look for new foot-traffic damage around rooftop equipment. A written note after each visit builds a history the owner can use at the next budget meeting. The program is the heart of preventive roof maintenance.
An owner with property in Trenton or Taylor can have the same schedule cover every building.
Commercial Roofing Questions
How can an owner tell whether a leak in January is a repair or a replacement?
Look at the extent of wet material rather than the number of stains. A single isolated leak with dry insulation around it is usually a repair. When infrared and core samples show wet insulation across a broad area, repair money is better spent on a recover or a replacement. We record both readings in writing so the choice is clear.
What should a facility director do about snow on a flat roof?
Do not send untrained staff up to shovel, since a cut membrane is a bigger problem than the snow. Check the interior for sagging or new stains, keep drains and scuppers as clear as can be done safely from the edges, and call for an inspection if the roof carries drifted snow against parapets or equipment.
Does the Dearborn weather record apply to a Wyandotte roof?
It is a nearby station and the best regional reference for snowfall and precipitation, but the roof itself must be checked on site. Local exposure, drainage and building height change what the roof experiences.
How long before a planned replacement should the roof be inspected?
Start the inspection well before the budget is set, ideally in the fall. That gives time for infrared work, core samples and a scope that reflects current energy-code requirements, so the work can be scheduled for a mild window the following spring.
Can a new membrane go over an old one?
Sometimes. A recover works when the insulation below tests dry, the deck is sound and local rules allow the added layer. If the existing roof holds moisture, the wet material comes out first, since covering it only hides the problem.
Schedule a Wyandotte roof inspection
Tell us how the building is used, where water has shown up and when the space can be reached. We will document the roof in writing with photographs, and that record will support your choice between repair, recover and replacement. Emergency response is available at any hour.
