Commercial Roofing in Inkster, MI
An industrial building being expanded or renovated in Inkster, MI has two roofs in one: the existing one and the new one, with a seam between them that decides whether the project stays dry. Inkster's investment profile stresses its western Wayne County location, its connections to I-94, I-275 and Michigan Avenue, and incentives that may support the expansion or renovation of industrial, research-and-development and manufacturing facilities. A roof at that joint carries the most risk, because the old and new systems differ in height, material and age.
Our walk runs from the drains across the field and seams to the curbs and edges, and ends at the tie-in where the two roofs meet. The written findings state the condition of the old roof, the design of the transition and the remaining service life of the assembly, so the owner can decide whether to keep, patch or replace the existing roof while the building is open.
Where the New Roof Meets the Old
An addition raises a handful of questions about the roof. The new roof usually sits at a different height, so a wall or a step separates the two. That step needs counterflashing, a termination at the high side and drainage that keeps water from pooling against the lower edge. If the old roof is lower, snow slides or blows onto it and loads it unevenly, and drains near the step see more water than the designer expected.
The old roof is inspected before the tie-in is designed, not after. A weak old membrane that is joined to a new one will fail at the seam within a few seasons, and the owner pays twice. We probe the old roof, take cores, check for wet insulation and recommend either a repair that matches the age of the new work or a replacement of the old section during the project. The decision is the owner's, and the findings give the numbers: moisture readings, layer counts, the remaining service life of the old section and the price of each path, so the project manager can compare a repair now against a replacement during construction. A commercial roof replacement of the old section is often cheaper when scaffolding and crews are already on site.
Adaptive Reuse and Commercial Rehabilitation
The city identifies commercial-corridor redevelopment, infill, adaptive reuse and the reuse of vacant or underused properties as local development opportunities, and it says eligible projects may include commercial rehabilitation. A building taken from one use to another may need new rooftop equipment, new penetrations and a change in insulation. Each of these alters the roof, and the changes should be designed together rather than added one at a time.
The survey starts with what exists. We record membrane type, layers, seams, flashing and drainage, and we note the equipment already on the roof. Then we compare the new use against it. A retail space converted to light manufacturing may need exhaust that the roof was never designed for. A warehouse turned into offices will need ventilation and a different insulation level. A roof condition report carries the survey results, and an insulation and cover board review shows what the assembly can take.
Interstate and Michigan Avenue Access
Inkster's connections to I-94, I-275 and Michigan Avenue matter on the job site. Material trucks, cranes and lifts reach a building by those routes, and deliveries can be timed to avoid peak traffic. For a working industrial site, we plan the staging area, the lift position and the truck path so that shipping and receiving continue. The work area is marked on a drawing and shared with the operations lead, along with the crane or lift schedule and the hours when the lot has to stay clear for trailers.
Many manufacturing spaces cannot stop for a roof job. We divide the roof into sections and finish each one before opening the next. At the end of every day, the open section is dried in and photographed. If a process requires a unit to be shut down while crews work near it, the schedule names the unit, the window and the person who authorizes it. A flex industrial space with offices at one end gets two sets of rules, one for the shop and one for the office.
Winter Performance and Drainage
A normal year at the Dearborn station brings 30.8 inches of snow, mostly November to April, within 35.05 inches of total precipitation. For a large industrial roof, drainage is the issue that shows up first. Snow settles against the step where an addition meets the old building, then melts toward the nearest drain. If that drain is blocked, water ponds at the junction and works into the seam.
Photos of each drain and scupper are taken twice, once before the first snow and once after the first thaw. The comparison shows whether ice, debris or settlement has changed the water path. Ponding that remains after a dry spell is measured and marked on the plan. The fix may be clearing the drain, adding tapered insulation or installing a new drain. A ponding water repair that addresses the cause lasts longer than a patch over the damage.
Code and Incentive Documentation
Michigan's current building code took effect April 9, 2025 and its commercial energy code on April 22, 2025, both 2021 editions. Replacing part of the roof in a renovation can set off energy provisions, which is why the enforcing authority is consulted before pricing. Incentive programs for facility renovation commonly ask for proof of the work, so we hand over photographs, a roof plan and a written scope.
Owners in Romulus, Wayne and Westland use the same package, which makes comparisons across properties direct. A capital plan lists each roof's condition and the expected year of work, so the owner can budget with fewer surprises.
Commercial Roofing Questions
How should an owner plan the roof for a building addition?
Inspect the existing roof first, then design the transition between old and new. The step, the counterflashing and the drainage at the junction should be drawn before construction starts. If the old roof is near the end of its life, replacing it during the project is often cheaper than doing it later.
What goes wrong at the joint between an old roof and a new one?
The old membrane is weaker and lifts or splits at the termination. Water collects at the lower edge and enters through the seam. We check the termination bar, the sealant and the drainage, and we recommend a transition detail that suits both systems.
Does a change of use require roof changes?
Often. New exhaust, new rooftop units and different insulation needs all alter the roof. The survey identifies which existing details can stay and which must be rebuilt, so the cost can be included in the project budget from the start.
How can a plant keep running while the roof is replaced?
By sectioning the work. Each section is finished and dried in before the next opens, and the schedule names the units that must pause. The plant lead approves the sequence in advance, and daily photographs show the status at each shift change.
What documentation helps with a renovation incentive?
Photographs of existing conditions, a roof plan, a written scope with a price and a record of completed work. We prepare those documents in the order a program usually asks for them.
Schedule an inspection before the project starts
Tell us whether the building is being expanded, renovated or reused, and when construction begins. We will document the existing roof in writing with photographs and a plan, and the record will support your decision on repair, recover or replacement.
