As the humidity climbs and the sun begins to bake the Delmarva Peninsula, homeowners in Salisbury, MD, are reaching for the thermostat. We know that feeling of relief when the AC kicks in, but while you’re cooling off inside, your roof is taking a relentless beating. In our 75+ years as a leading roofer in Salisbury, we’ve seen how Maryland’s intense summer UV rays and high temperatures can age a roof prematurely.
At Peninsula Roofing Company, Inc., we often talk about “thermal shock.” This happens when your roof reaches blistering temperatures during the day: sometimes exceeding 150°F on the surface: and then cools rapidly during a sudden summer afternoon thunderstorm. This cycle of expansion and contraction puts immense stress on roofing materials.
If you’re wondering whether your home is ready for the peak of the season, it’s time for a “sunburn check.” Here is our comprehensive summer checklist to help you identify potential issues before they turn into costly leaks.
1. The “Bacon Test”: Watching for Curling and Cupping
One of the most obvious signs that your roof is struggling with the heat is what we call the “Bacon Test.” When asphalt shingles are exposed to extreme heat for prolonged periods without proper ventilation, they lose their essential oils and moisture. This causes them to dry out, become brittle, and start to warp.
Take a look at your roofline from the ground. Are the edges of the shingles turning upward (cupping) or are the centers starting to bulge while the edges stay flat (curling)? If they look like they’re frying in a pan, your shingles are “sunburned.”
Curled shingles are a major red flag for roofing companies in Salisbury, MD. Once a shingle loses its flat profile, it can no longer effectively shed water. It also becomes highly susceptible to wind uplift; a strong wind can easily catch the lip of a curled shingle and snap it off completely.
2. Granule Loss: Checking for “Bald Spots”
Asphalt shingles are covered with small, ceramic-coated granules. These aren’t just for color; their primary job is to reflect UV rays and protect the underlying asphalt from the sun. Think of granules as your roof’s SPF 50 sunscreen.
Extreme heat can cause the asphalt to soften, which weakens the bond holding those granules in place. Over time, you might notice “bald spots” on your shingles where the dark asphalt underneath is exposed. This exposure accelerates the deterioration of the shingle exponentially.
How to check:
- The Gutter Test: Check your gutter downspouts after a heavy rain. If you see piles of sediment that look like coarse sand, your roof is shedding its protection.
- Visual Inspection: Look for areas of the roof that appear darker or “shinier” than the rest. This often indicates the granules have worn away, leaving the fiberglass mat or asphalt exposed to the elements.
As experienced salisbury roofers, we recommend addressing granule loss early. Once those bald spots appear, the sun will bake the shingle until it cracks, leading to leaks during the next big storm.
3. Blistering on Flat and TPO Roofs
For our commercial clients and homeowners with flat-roof additions, the sun presents a different set of challenges. Whether you have a modified bitumen roof or a modern TPO membrane, heat can cause “blistering.”
Blisters occur when moisture or air is trapped between the layers of the roofing system or between the membrane and the substrate. As the sun beats down, that trapped air or moisture expands, creating a literal bubble on the surface.
If you see these bubbles, do not pop them! Popping a blister creates an immediate opening for water to enter your building. While a few small blisters might not be an emergency, widespread blistering suggests your roof is failing or was improperly installed. At Peninsula Roofing Company, Inc., we specialize in commercial roofing solutions and can evaluate whether these blisters require localized repairs or a more comprehensive fix.
4. The Attic Sauna: Why “Double-Baking” Kills Roofs
Perhaps the biggest silent killer of roofs in Salisbury, MD, isn’t the sun hitting the shingles: it’s the heat trapped underneath them. If your attic isn’t properly ventilated, it becomes a giant oven.
On a 90-degree day in Salisbury, an unventilated attic can easily reach 140°F to 150°F. This creates a “double-bake” effect where the shingles are being cooked from the outside by the sun and from the inside by the attic heat. This extreme temperature causes shingles to age twice as fast as they should.
Signs your ventilation is failing:
- The Touch Test: If you touch your interior ceiling on a hot day and it feels warm, your attic is holding too much heat.
- High Energy Bills: If your AC is running non-stop but the house still feels stuffy, your attic might be working against you.
- Rusty Nails: In the winter, poor ventilation leads to condensation, which can rust the nails in your attic. If you see rust streaks on your rafters, your ventilation needs an upgrade.
Ensuring your soffit vents and ridge vents are clear is one of the most cost-effective ways to extend the life of your roof.
5. Sealant Stress: Chimneys, Skylights, and Pipes
Roofing materials aren’t the only things that expand and contract. The sealants and flashing around your chimney, skylights, and plumbing vents are under constant pressure.
Maryland’s summer heat can cause old caulking to dry out, crack, and pull away from the surface. A gap as small as a hairline fracture can allow water to seep in during a heavy downpour.
When you’re looking at your roof, pay close attention to the “penetrations”: anywhere something pokes through the roof. If the rubber boots around your pipes look cracked or the flashing around your chimney looks loose, it’s time to call a roofer in Salisbury to reseal those areas before the hurricane season arrives.
6. Safety Warning: The “Soft Shingle” Rule
Before you grab a ladder to do your own inspection, we have a vital safety and maintenance tip: Do not walk on your roof during the heat of the day.
When asphalt shingles get hot, they become incredibly soft. Walking on them in 90-degree weather can cause “scuffing,” where your boots actually rub the granules off or tear the softened asphalt. You can cause more damage in five minutes of walking than the sun does in a month.
Additionally, soft shingles are slippery, and the heat radiating off the roof can cause heat exhaustion much faster than you’d expect. If you want to do a visual check, do it from the ground with a pair of binoculars, or wait until the early morning hours when the roof is at its coolest. If you need a closer look, it’s always safer to hire professional roofers in Salisbury, MD who have the proper safety equipment and training to handle hot-weather operations.
Why Local Expertise Matters
Choosing between various roofing companies in Salisbury, MD, comes down to who understands the local climate best. Since 1947, Peninsula Roofing Company, Inc. has been the trusted name for residential and commercial roofing on the Delmarva Peninsula.
We don’t believe in “one-size-fits-all” solutions. Whether you need a simple repair to fix some “sunburned” shingles or a complete replacement with energy-efficient materials, we’re here to find the best fit for your budget. We offer 24/7 storm response and comprehensive maintenance programs to keep your roof in top shape year-round.
Don’t Wait for the Leak
Summer is the best time to address these “sunburn” issues before they turn into autumn emergencies. If you’ve noticed curling shingles, granule loss, or an overheating attic, give us a call. We’ll provide a professional assessment and help you protect your biggest investment.
Contact Peninsula Roofing Company, Inc. today for a consultation and let us help you keep your home cool and dry all summer long.