Madison Heights, MI · Licensed & Insured (248) 817-6913 Request a Bid

Building Maintenance

Commercial roofing in Metro Detroit

Flat and low-slope roof repair, replacement and maintenance programs across Metro Detroit: TPO, EPDM and modified bitumen, for owners and property managers who'd rather plan than react.

What We Do

A roof is a system, not a surface

Almost every commercial building in Metro Detroit wears a flat or low-slope roof, and almost every expensive roof problem started as a cheap one: a failed seam, a split boot, a clogged drain, ponding that nobody walked up to look at. AGP Construction's roofing work covers the whole arc: repairs that stop active leaks, maintenance programs that catch the next one early, restorations that buy good roofs another decade, and full replacements when the honest answer is that patching has become a subscription.

We work on offices, industrial plants, retail centers and multi-family buildings, in the systems that dominate this market: TPO, EPDM rubber and modified bitumen. Because we're a general contractor as well as a roofer, the adjacent trades: decking repairs, masonry at parapets, interior drywall repair where the water got in: ride under the same contract.

Scope

Roofing work we take on

Respond

Leak response & repair

Find it, stop it, document it: tracing water to its actual entry point (rarely where the ceiling tile says), repairing seams, flashings, boots and punctures, and photographing everything for your file.

Prevent

Maintenance programs

Scheduled spring and fall inspections: drains cleared, seams walked, flashings checked, penetrations and rooftop-unit curbs reviewed: closed out with a photo report and a short priority list. The cheapest roofing money you'll ever spend.

Extend

Restoration & coatings

Reinforced coating systems over structurally sound roofs: years of added service life and a cooler roof surface for a fraction of replacement cost, when the substrate honestly qualifies.

Replace

Tear-off & replacement

Full replacement with new insulation to current Michigan energy code, tapered where drainage needs fixing: sequenced by roof section so the building underneath keeps operating.

Recover

Recover systems

Where code and the existing assembly allow one, a recover over the existing roof can save tear-off cost and disruption. We check moisture and attachment honestly first: a recover over wet insulation is money buried alive.

Details

Flashings, drains & sheet metal

Edge metal, copings, curbs, pipe boots, scuppers and drain assemblies. The details cause the leaks, so the details get the attention, and the photographs.

Crew member working at roof level on a wood frame

The Real Questions

Repair, restore or replace: we show our math

The roofing industry has an incentive problem: the contractor diagnosing your roof is usually the one who profits most if the diagnosis is "replace it." Our rule is to show the evidence (core cuts, moisture readings, photos of the actual failures) and price the honest options side by side. A ten-year-old TPO roof with two bad seams needs two welds, not a proposal with a crane in it.

The flip side is also true, and we say it plainly: when insulation is saturated across large areas, when seams are failing systemically, when you're paying for the same leak every season: repairs have become the expensive option. We'll show you the repair history that proves it.

Insulation, drainage and what code adds

Replacement triggers current energy code, which in Michigan generally means substantially more insulation than a 1990s roof carries: a real cost, but also a real utility saving every month after. Ponding gets fixed with tapered insulation at the same time, because water that leaves the roof can't get through it. We design both into the replacement bid, not into change orders.

Occupied buildings and tenants below

Tear-offs are loud, and odors and debris need managing when there are tenants under the deck. We sequence by section, coordinate noisy phases with your property manager, protect rooftop units and interiors, and run magnet sweeps on the ground every day. Roofing counts as occupied-building work; we treat it that way.

The deck under the membrane

A membrane is only as good as the deck carrying it. Tear-offs routinely expose what the old roof was hiding: rusted steel deck sections, rotted wood decking at old leak paths, saturated insulation that weighs five times what the design assumed. We price deck repair as a stated unit rate in every replacement bid, so when the tear-off finds damage, the cost is a known number times a measured quantity (photographed and approved before it's covered) instead of a negotiation with your roof open to the sky.

Storm damage and insurance claims

After hail or wind events, the documentation is half the repair. We inspect, photograph and write up damage in the format adjusters actually work from: dated photos, measurements, and a scope that separates storm damage from pre-existing wear, because blurring that line helps nobody and stalls claims. We'll meet your adjuster on the roof, answer the technical questions, and then do the work that gets approved. What we won't do is manufacture a claim; owners keep us around precisely because our reports hold up.

When Water Is Coming In

Leak response, stated plainly

When there's water on a sales floor or over a server room, the schedule is measured in hours. Call (248) 817-6913, tell us what's happening and what's underneath it, and we'll get eyes on the roof, stop the water with a proper temporary measure if weather blocks a permanent one, and follow up with the permanent repair and photos of both. What's underneath the leak decides the urgency: tell us if it's inventory, equipment or people, and we triage accordingly.

yearly inspections in a standard maintenance program
15 to 30year typical service life of a well-installed single-ply roof
100%of repairs documented with photos, before and after

FAQ

Commercial roofing questions, answered straight

How fast can you respond to a roof leak?

Call (248) 817-6913 and we'll triage immediately: active leaks over occupied space or equipment jump the queue. If weather prevents a permanent repair that day, we stop the water with a proper temporary measure and return for the permanent fix, with photos of both.

Should I repair, restore or replace my roof?

Depends on what a moisture survey and core cuts actually show. Localized failures on a sound roof: repair. Sound substrate but aging surface: a restoration coating can add years for a fraction of replacement. Saturated insulation and systemic seam failure: replacement is the cheaper decade. We show the evidence and price the options side by side.

How long does a TPO or EPDM roof last?

A well-installed single-ply roof typically serves 15 to 30 years, and maintenance is most of the difference between those two numbers. Cleared drains, tight flashings and small repairs done small are what get a roof to the far end of its range.

Can you do roofing work in winter?

Repairs, yes: many membrane repairs and most emergency work can be done properly in cold weather with the right materials and methods. Full replacements are usually better scheduled for warmer months; when winter replacement is unavoidable, we adjust methods and tell you exactly what changes and why.

Will you work with our insurance company after storm damage?

Yes. We document damage the way adjusters need it, meet them on the roof, and keep storm damage clearly separated from wear so the claim moves instead of stalling. Then we perform the approved scope and warranty the work like any other project.

What does a maintenance program include?

Two scheduled inspections a year (typically spring and fall) covering drains, seams, flashings, penetrations and rooftop-unit curbs, plus a photo report with a prioritized list: fix now, watch, budget for later. Small program cost, large avoided-emergency math.

Know what your roof is doing before it tells you.

Get an inspection with photos and a straight answer: repair, restore or replace, with the math shown.

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