“Summer heat waves are tough on roofs,” says Bob Hillier, Owner of Paul Davis Restoration of Greater Houston, Texas, who names asphalt shingles as the most popular roofing choice in the United States, “Understanding the challenges – and proactively addressing them – helps your roof last longer.”
Replacing a roof is one of the most significant investments that homeowners make on their properties. These complex building components typically last about two decades, though mileage varies depending on type, climate and care. Every roof, however, battles a taxing environment throughout its lifespan:
Temperature fluctuation: Heat, often exceeding 150 degrees Fahrenheit in deepest summer, expands roofing materials while cooler nighttime temperatures contracts them. Newer, flexible roofs easily accommodate the daily cycle without damage. Older roofs, however, stiffen. This can crack shingles and underlayment, pop nails, detach vent gussets, split flashing or even damage framing. Your best defense against this roof risk? Regularly inspect and repair roofs, then replace yours when necessary.
Fun roof fact! Orange peels inspired the famous white tile, overlapping shell roof adorning the Sydney Opera House.
UV radiation: Ultraviolet rays strike roofs daily, rain or shine, and degrade materials over time. Damage may appear as fading, discoloration, granule loss (granules washing off in storms and depositing near downspout outflows), curling, buckling and detaching. Your best defense? Inspect, repair and replace when necessary. Shingles with built in UV protection are now available on the market.
Fun roof fact! At a whopping 14 acres, the Mercedes-Benz Stadium in Atlanta, Georgia, boasts the country’s biggest roof.
Humidity: Roofing materials are designed to shed water rapidly and dry quickly. Lingering moisture – from attics below, and shade or moss growth on top – fosters condensation and mold that rapidly degrades materials and allows water to infiltrate the structure. Your best defense? Insulate and ventilate your attic properly. Vent bathroom fans and clothes dryers to the outdoors, not into attic spaces. Ensure shingles dry out between rainstorms by trimming overhanging trees or shrubbery. If necessary, retain roofing professionals to address mold or moss growth.
Fun roof fact! Flat roofs are never completely flat. They slope imperceptibly to channel water away.
“As roofs degrade, energy use and HVAC costs rise, too,” Hillier concludes. “Caring for your roof and extending its life protects your property and your pocketbook.”
