Key takeaway
Maryland weather, installation quality, ventilation, maintenance, and material selection all affect how long a roof may last.
Typical asphalt shingle lifespan
Many asphalt shingle roofs last roughly 15 to 30 years, but that range is not a guarantee. Some fail earlier, while well-installed and well-maintained systems may perform longer.
Maryland weather affects roofing materials
Maryland roofs experience heat, humidity, freezing temperatures, heavy rain, wind, snow, ice, and seasonal temperature swings.
Ventilation matters
Poor attic ventilation can trap heat and moisture, contributing to decking problems, condensation, material deterioration, and reduced roof performance.
Installation quality matters
Fastener placement, flashing, underlayment, ventilation, starter shingles, valleys, and penetrations all influence long-term performance.
Maintenance and trees matter
Debris accumulation, overhanging branches, clogged drainage paths, moss, and delayed repairs can shorten roof life.
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