If you live in the Maryland or Pennsylvania area, then you recently experienced incredibly hot weather followed by heavy rainfall. The two of these together resulted in uncomfortable humidity. The problem is that many homeowners in these areas experience humidity throughout the year, especially in this season.
During summer in particular, conditions can swing from heat to sudden storms in a matter of hours. Humidity creates the perfect environment for moisture to build up beneath roofing materials. When warm, damp air can become trapped in the attic or inner roof, leading to condensation forming underneath the roof deck. Over time, this moisture can weaken materials—especially wood—and damage insulation. This can even contribute to mold or mildew growth inside the home.
The combination of heat and humidity can accelerate wear on asphalt shingles. Prolonged exposure to high temperatures causes shingles to expand, and then they contract when the weather cools. This is particularly prevalent for older materials. When this cycle repeats, rain and moisture exposure can make materials deteriorate faster. Homeowners might notice curling shingles, granule loss, discoloration, and even dark streaks appearing on the roof after very humid periods.
Heavy summer storms can worsen matters by forcing water into vulnerable areas around flashing, vents, and chimneys. Even a minor roofing issue can quickly snowball into a leak when constant humidity prevents materials from drying fully between storms.
Proper ventilation plays a major role in protecting your roof during humid weather. A well-ventilated attic helps hot, moist air escape before damage can happen. Regular roof inspections are also important after extreme heat and rain, as early signs of moisture damage can be easy to miss from the ground.
At CR3 American Exteriors, we help homeowners identify weather-related roofing problems before they become expensive repairs. If your roof has been exposed to recent storms, heat, or excessive humidity, now is a great time to schedule a free inspection. Call us today!
