The stretch of triple-digit heat index days that just rolled through Central Ohio has finally lifted. Cooler air is a relief for everyone in Westerville, Dublin, Powell, Hilliard, Gahanna, New Albany, Pickerington, Grove City, and Canal Wincheste. Before you fully exhale, it’s worth walking around your property. Extreme, sustained heat doesn’t just make you miserable. It stresses building materials in ways that often don’t show up until weeks later, when a small issue has turned into a leak, a warped board, or a spike in your energy bill.
Here’s what our crews recommend homeowners look for right now.
1. Shingles That Cupped, Curled, or Lost Granules
Asphalt shingles are engineered to handle heat, but repeated days of extreme surface temperatures (roof surfaces can run 40-60 degrees hotter than the air temperature) accelerate the drying-out of the asphalt. What to look for from the ground with a pair of binoculars:
- Curling or cupping edges — shingles that no longer lay flat
- Bald spots where granules have worn away, often showing up as darker patches
- Granules collecting in gutters or at downspout exits — a little is normal, a lot after a heat event is not
If your shingles are already older, an extended heat event is often what pushes marginal shingles into failing territory. This isn’t usually an emergency, but it’s the kind of thing worth having a professional set of eyes on before fall storms arrive.
2. Attic Temperature and Ventilation
This is the one most homeowners skip, and it’s the one we’d put first. An attic that isn’t ventilating properly during a heat dome can trap temperatures well above 150°F. That heat:
- Bakes the underside of your roof deck and shingles from below
- Breaks down insulation efficiency over time
- Drives up cooling costs as heat radiates back down into living space
If you noticed your upstairs rooms were noticeably harder to cool during the heat dome, or your HVAC ran nonstop, that’s a signal worth investigating. Proper intake (soffit vents) and exhaust (ridge vents or box vents) should be moving air continuously, not just during a crisis.
3. Gutters and Downspouts: Check for Sagging or Pulling Away
Heat causes materials to expand, and repeated expansion/contraction cycles put stress on fasteners. Look for:
- Gutters pulling away from the fascia board
- Sagging sections where water might now pool instead of drain
- Downspouts that have separated at joints
Combined with any upcoming rain (which tends to follow a heat dome as the pattern breaks), gutters that were borderline before the heat may now be in worse shape.
4. Siding: Warping, Buckling, or Gaps
Vinyl and fiber cement siding both have expansion tolerances, but sustained extreme heat can push them past normal movement. Walk your exterior and check for:
- Waviness or buckling, especially on south- and west-facing walls that took the most direct sun
- Gaps opening up at seams or corners
- Discoloration or a chalky texture, which can indicate UV and heat degradation of the surface finish
5. Caulking and Sealant Around Windows, Doors, and Roof Penetrations
Heat dries out and cracks caulk faster than almost anything else on the exterior of your home. Check the seals around:
- Chimneys, skylights, and roof vents
- Window and door trim
- Any place two different materials meet
Small cracks here are an easy, inexpensive fix now, and a much bigger water intrusion problem later if left alone.
6. Foundation and Soil: Watch for New Cracks
This one surprises people, but extended heat and dry conditions cause soil to contract and pull away from your foundation. When rain returns, that soil rehydrates and shifts again. The heat-then-rain cycle is actually one of the more common triggers for new hairline foundation cracks. Walk your foundation line and note anything new, especially near corners.
7. AC Condensation Lines and Roof Penetrations
Not roofing, but related: your AC ran overtime through this stretch, and roof penetrations for vents, condensation lines, and refrigerant lines are common leak points that get overlooked. A quick check in the attic near these penetrations for any staining or moisture is worth the five minutes.
Should You Call for an Inspection?
Most of what’s on this list is a “note it and monitor it” situation, not a “call immediately” one. But a few signs do warrant a prompt inspection:
- Curling shingles combined with an older roof (15+ years)
- Any staining on interior ceilings that wasn’t there before
- Gutters visibly pulling away from the house
- New or widening foundation cracks
If you’re in Westerville, Dublin, Powell, Hilliard, Gahanna, New Albany, Pickerington, Grove City, Canal Winchester, or anywhere else in Central Ohio and want a second set of eyes after this heat event, Roof Ohio offers free inspections. We’ll tell you honestly what needs attention now, what can wait, and what’s just cosmetic. No pressure, no storm-chaser sales tactics, just an honest assessment from a local team that’s been through plenty of Ohio weather cycles.