Summers in Kentucky don’t just bring sunshine — they bring heavy humidity, too. And while we often notice the effects on our skin and energy bills, high humidity can quietly take a toll on your roof over time.
At CRC Roofing & Renovations, we’ve seen how moisture in the air can lead to damage if left unchecked. Here’s how humidity affects your roof and what you can do to protect it.
- Moisture Buildup in the Attic – When warm, humid air gets trapped in your attic, it can condense into water droplets. Over time, this moisture can cause wood rot, damage insulation, and even lead to mold or mildew growth. The problem is often made worse by poor ventilation or inadequate airflow.
What to Do: Make sure your attic has proper ventilation. Ridge vents, soffit vents, and attic fans can help regulate temperature and reduce moisture buildup — extending the life of your roof and the structure underneath it.
- Algae and Moss Growth – Humidity also creates the perfect environment for algae, moss, and mildew to grow on your shingles. These organisms retain moisture and can slowly eat away at roofing materials, especially in shaded or north-facing areas.
What to Do: If you notice dark streaks or green patches, it’s time to clean your roof or schedule a professional inspection. Preventative treatments and algae-resistant shingles are available if you’re replacing your roof or upgrading materials.
- Material Expansion and Contraction – Heat and humidity can cause roofing materials — especially asphalt shingles — to expand and contract. Over time, this repeated movement can lead to cracking, curling, or loosening, which allows water to get in.
What to Do: Regular roof inspections, especially after a long, hot summer, can help catch these issues early. If you’re due for a replacement, ask about materials that perform well in fluctuating temperatures.
- Shortened Roof Lifespan – Excess moisture speeds up the aging process of your roof. It softens materials, invites pests, and increases the likelihood of leaks — all of which can shorten the lifespan of your investment.
What to Do: Stay proactive. Scheduling seasonal inspections and taking care of ventilation and minor repairs can go a long way in protecting your roof and your home.
Keep Humidity from Hurting Your Roof
Your roof is designed to take the heat — but it can use a little help. From ventilation upgrades to full roof replacements, CRC Roofing & Renovations is here to keep your home protected no matter what the Kentucky weather brings.
Not sure how your roof is holding up this summer?
Contact us today for a free inspection and personalized recommendations.
