Macomb Windstorm Today: Roof Damage Steps (April 15)

At roughly 2:40 this afternoon, the first 54 mph gust rolled across M-59 and within twenty minutes our phones started ringing from Shelby Township, Sterling Heights, and the neighborhoods north of 23 Mile. If you are reading this tonight because water is coming through your ceiling, a shingle is flapping over your eave, or a limb just thumped onto your roof, this post is written for the next six hours of your life.

Do not scroll past the timeline section. The decisions you make before midnight tonight will shape how much secondary damage you end up with. We have been on roofs across Macomb County since the storm started, and the pattern we are seeing is specific and fixable if you move quickly.

Timeline: What Happens in the First 6 Hours After Wind Lifts Your Shingles

Hour 1 (the gust event itself): Asphalt shingles are wind-rated under ASTM D7158 or D3161. Older 3-tab products commonly carry a 60 mph Class D rating; architectural shingles typically carry higher ratings. Ratings assume an intact thermal seal and proper installation. Tonight's sustained gusts over 50 mph are below the failure point of a single extreme gust but can fatigue the sealant bond over time. The seal breaks silently. You hear nothing from inside the house.

Hour 2: Wind-driven rain is now being forced horizontally under the lifted tab. Felt underlayment, if that is all you have, begins to saturate quickly. Synthetic underlayment buys you some additional time but is not a permanent barrier.

Hour 3: Water reaches the roof deck OSB and begins to wick along the grain. This is when the attic insulation starts to show dark spots if you shine a flashlight up from the access hatch.

Hour 4: The first drip hits the top of the drywall ceiling below. Drywall paper absorbs water until sagging becomes visible.

Hour 5: A visible ceiling stain appears. Most homeowners notice it now. This is already 3 to 4 hours behind the actual failure.

Hour 6: Water tracks laterally along the ceiling joists and can reappear in a room 15 feet away from the actual leak. This is why DIY containment almost always misses the real source.

Triage: 4 Things to Check Before You Climb Anything

Nobody should be on a roof tonight. The wind is not done, and wet asphalt at 45 degrees is one of the most dangerous surfaces in residential construction. Before you even think about a ladder, do these four checks from the ground or from inside.

• Power lines: Walk the perimeter of the house and look up. A limb that brought down a service drop can energize gutters. If you see a drooping line, call DTE first and wait.
• Gas meter: If a limb hit anywhere near the meter on the side of the house, smell for gas and leave if you detect anything. Do not flip light switches on the way out.
• Ceiling bulges: Walk every room and look up. A dome-shaped bulge in drywall is holding between 1 and 8 gallons of water depending on diameter. Do not puncture it without a bucket in place.
• Attic check: Pop the hatch with a flashlight. You are looking for active drip lines, wet insulation, and daylight. Daylight through the roof deck is a dispatch-now situation.

Interior Signs the Roof Failed, Even If the Outside Looks Fine

This is the part most homeowners miss. After a 50 to 60 mph event, the classic missing-shingle damage is actually less common than the silent seal break. Here is what to look for inside.

Ceiling stains with a yellow-brown halo: Fresh water leaves a dark center with a tannin-colored ring as wood resin leaches out of the decking. If the ring is still damp to the touch, the leak is active.

Drip lines under soffit vents: Walk outside with a flashlight and check the underside of the soffit. Wind-driven rain often enters through soffit vents that are meant for air, not water, and drips down the fascia board. Homes built between 1995 and 2010 in Sterling Heights are particularly prone to this because of the oversized continuous soffit vents that were standard in that era.

Nail pops in upstairs drywall: If you see a drywall screw suddenly standing proud of the ceiling surface, the truss above moved. That means uplift translated all the way through the structure, and the roof-to-wall connection needs inspection.

A musty smell in a closet under a cathedral ceiling: Cathedral ceilings have no attic buffer, so the first evidence of a roof leak is often an odor before a visible stain.

Why 50 to 60 MPH Gusts Are the Dangerous Range, Not 80+

Here is the counterintuitive fact that we wish every Macomb County homeowner understood. A single 85 mph gust from a brief squall line does less roof damage than four hours of sustained 55 mph wind. The reason is uplift fatigue cycling.

Every time a shingle lifts and slaps back down, the sealant bond weakens slightly. A brief extreme gust lifts a shingle once, hard, and it either fails immediately or survives. A sustained moderate wind lifts it many times over the course of an afternoon, each cycle working the seal loose like bending a paperclip. The shingle ends up unsealed but still in place, which is the worst possible state because you cannot see the damage from the ground and the next rain event drives water directly under it.

This is why derechos and long-duration wind events from the west, which is exactly what tracked across Oakland and Macomb today, do more insurance claim volume than tornadoes in the same region. The National Weather Service Detroit office has logged that pattern for years, and tonight fits it perfectly.

What We Are Seeing Across Macomb County Today

Our dispatch board tonight spans the county. In Sterling Heights, architectural shingles on 1990s-era subdivisions are approaching the end of their typical service life, and across our service area we are seeing tab field lift on windward slopes.

In Shelby Township, the problem is trees. The saturated soil from last week's rain loosened root systems, and mature silver maples have come down on roof lines across our service area. Silver maple is the worst case because the limbs are brittle and the canopy is wide.

In Macomb Township, newer construction is holding up to the wind itself, but we are getting water intrusion around improperly flashed skylights. Skylights are the number one vulnerability on houses under ten years old.

In Clinton Township, the older housing stock is showing chimney flashing failures. The storm pushed rain sideways into step flashing joints that had been marginal for years.

In Utica, we are handling tree-on-roof calls and partial gable fascia blowoffs on older colonials across our service area.

And in Mt Clemens, the real worry is not the wind at all. It is the Clinton River watershed saturation combined with tonight's rainfall, which, as we explain in our wind-driven basement flooding breakdown, is setting up classic basement hydrostatic pressure failure in homes with clay soil within a block of the river.

Emergency Tarp vs Full Roof Repair: When Each Makes Sense

A proper emergency tarp is not a blue plastic sheet from Home Depot held down with bricks. A professional emergency tarp is a self-adhered modified bitumen membrane, mechanically fastened to sound decking with cap nails, sealed at all edges, and installed to shed water until permanent repair is possible. It is a 4 to 12 hour labor job and it is not optional tonight if you have active water intrusion.

Full roof repair makes sense when the damage is concentrated to a single slope or a tree impact zone. Full roof replacement becomes the right call when more than 30 percent of the field has experienced seal failure, because patching unsealed shingles with new sealed shingles creates a mismatched thermal profile that fails within two seasons.

Do Not Wait for the Insurance Adjuster to Mitigate

This is the single most expensive mistake we see after every storm, and our broader Michigan storm damage and insurance claims guide explains why the carriers interpret delay as a mitigation failure. Homeowners call their carrier, the carrier tells them an adjuster will be out in 3 to 7 days, and the homeowner sits on their hands waiting. Meanwhile the attic insulation goes from damp to mold-colonized, the drywall sags, and the hardwood floors cup.

Your policy requires you to mitigate. The insurer will reimburse reasonable emergency mitigation costs as part of the claim. You do not need permission to tarp a roof, extract standing water, or set containment. You just need documentation, which is exactly what a qualified restoration contractor provides as part of the job. Claim negotiations over scope and pricing are a conversation between you and your insurer later. Tonight is about stopping the damage.

Call Prime Restoration at (586) 277-1069. We dispatch as quickly as crew availability and road conditions allow; response times vary during active weather events. If water is coming in, do not wait until morning.

Prime Restoration is a Michigan restoration contractor. We are not a licensed insurance professional, insurance agent, or law firm, and nothing in this article is legal, insurance, electrical, plumbing, or engineering advice. For policy questions contact your insurance agent, carrier, or a licensed insurance professional or attorney.