Roof Replacement
Updated November 6, 2026
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Safety
Roof work carries serious risks, including falls, electrical hazards from nearby power lines, and injuries from unstable decking. Avoid climbing onto a roof without proper fall protection, a stable ladder setup, and appropriate footwear. Never walk on a roof during rain, high winds, or icy conditions, and stay clear of the work zone while crews are removing or installing materials. Always leave structural inspections, tarping after severe storms, and any emergency roof replacement work to trained, insured technicians with the right equipment.
Before the visit
Schedule a roof inspection to document the current condition, roof age, and extent of any leaks or storm damage. Review roofing material options, such as asphalt shingles, metal, tile, or flat membrane systems, along with warranty terms and expected lifespan. Request written estimates from independent local roofers and confirm licensing, insurance, and permit requirements in the area. Move vehicles away from the driveway, cover items in the attic, and protect landscaping near drop zones before work begins. Plan the project timeline, including weather windows, material delivery, and dumpster placement for debris removal. Notify neighbors about expected noise and arrange temporary plans for pets and household members sensitive to disruption.
Repair vs replace
Only a small area of shingles is missing, curled, or cracked, and the rest of the roof is in good condition. A leak is isolated to flashing around a chimney, vent, or skylight and the underlying decking is still sound. The roof is relatively new and the damage resulted from a single storm event rather than overall wear. Minor granule loss or a few nail pops appear without signs of widespread deterioration. A sagging section is limited to damaged fascia or soffit boards rather than structural rafters.
When to replace
The roof is at or near the end of its expected lifespan, typically 20 to 30 years for asphalt shingles. Leaks appear in multiple areas or in rooms on opposite sides of the house. The roof deck shows widespread sagging, soft spots, or visible water damage in the attic. Shingle curling, buckling, or heavy granule loss covers large sections of the roof surface. Past repairs keep failing, and repair costs approach a significant portion of full house roof replacement. Storm damage, hail, or wind has compromised the structure beyond localized patching.
Common issues
| Symptom | Likely causes | Safe check | Stop when |
|---|---|---|---|
| Water stains on ceilings or walls | Worn shingles, failed flashing, cracked underlayment, or punctures allowing water into the attic space. | From the ground, look for lifted or missing shingles above the stained area, and check the attic with a flashlight during daylight for drips or daylight penetration. | Water is actively dripping during rain, the ceiling is bulging, or stains are spreading across multiple rooms. |
| Missing, cracked, or curling shingles | Age-related wear, wind uplift, hail impact, or improper original installation. | Use binoculars from the ground to scan the roof surface after storms, and look for shingle pieces in gutters or the yard. | Bare spots are widespread, multiple shingles are gone, or the roof appears wavy or uneven from the street. |
| Granules accumulating in gutters | Deteriorating asphalt shingle coating from age, hail damage, or heavy foot traffic on the roof. | Inspect gutter discharge and downspout outlets after rain for sandy granule buildup. | Gutters fill with granules after every rain, or shingle surfaces show bald patches. |
| Sagging roof deck or ridgeline | Prolonged moisture exposure, rotted decking, failed structural supports, or excessive load from layered roofing. | View the roofline from the ground at a distance for dips or waves, and inspect the attic for bowed rafters or moisture on decking. | Sagging is visible from ground level, the ridge sags in the middle, or interior doors no longer close properly. |
| Daylight visible through attic boards | Missing shingles, cracked decking, separated seams, or holes from animals or fallen branches. | Enter the attic during daylight, turn off lights, and look upward for pinpoints of sun through the roof structure. | Light comes through in several spots, insulation is wet or compressed, or board seams show water trails. |
| Moss, algae, or dark streaks across the roof | Trapped moisture, shaded roof sections, poor drainage, or organic debris buildup holding water against shingles. | Observe from the ground for green patches or black streaking, and check nearby tree cover and gutter drainage. | Shingles lift or flake where growth is present, or moss covers large connected sections of the roof. |