Memphis averages 54 inches of rain per year, concentrated in violent spring thunderstorms that drop two to three inches in an hour. That water has to go somewhere. If your asphalt roof shingles are improperly installed or lack adequate underlayment, water infiltrates at nail penetrations and seams. The humidity compounds the problem. Memphis's average relative humidity sits above 70 percent year-round, which prevents roofs from drying out completely. Moisture trapped under composition shingles accelerates granule loss and mat degradation. Homes near the Wolf River or in low-lying areas like Raleigh face even worse conditions because morning fog lingers longer, keeping shingles damp.
Evergreen Roofing Memphis accounts for these conditions by using advanced underlayment and proper ventilation. We have been installing fiberglass shingles and composite shingle roofing across Shelby County for years. We know which products survive Memphis's climate and which ones fail prematurely. We work with local suppliers who stock materials rated for high-humidity, high-UV environments. When you hire a local roofer, you get someone who understands the specific challenges of this region, not a contractor applying generic methods that work in drier or cooler climates.
