When a roof needs replacing rather than repairing

The clearest signals are age combined with condition. A roof past twenty years that is shedding granules heavily, showing curling or cupping shingles across whole slopes, or has needed several repairs in recent years is usually telling you something.

A roof that is otherwise sound with damage in one defined area — a valley, a chimney, one wind-hit slope — is usually a repair candidate. The honest test is whether the repair addresses a symptom or the whole system.

• Widespread curling, cupping or cracking shingles
• Bald patches where granules are gone
• Sagging along the ridge or between rafters
• Repeated leaks in different locations
• Daylight visible through the roof deck from inside the attic

What actually drives roofing cost

Because these vary house to house, per-square-foot averages found online are of limited use in a specific decision. Written, itemized estimates are.

• Roof area, measured in squares (one square = 100 square feet)
• Pitch and number of stories, which drive labor time and safety requirements
• Complexity: valleys, dormers, skylights, chimneys and pipe penetrations
• Material choice, from three-tab to architectural to metal
• Decking condition discovered after tear-off
• Number of existing layers to remove and dispose of
• Ventilation work, flashing replacement and accessories
• Permits, disposal fees and local labor market conditions

How to evaluate a roofing contractor

Storm seasons attract out-of-area operators. A company that can be reached after the job is finished is worth more than a slightly lower bid.

• Confirm insurance — general liability and workers' compensation — and ask for certificates
• Ask who will actually be on the roof: employees or subcontracted crews
• Get the full scope in writing, including what is excluded
• Understand both warranties: manufacturer material and contractor workmanship
• Ask how unexpected decking damage is priced before work begins
• Be wary of large up-front deposits and of pressure to sign on the spot
• Check reviews across more than one platform, and read the middling ones

Roofing and insurance: what to expect

Whether a claim makes sense depends on your deductible relative to the likely cost of repair, your policy's treatment of roof age and depreciation, and the adjuster's findings. This is your decision to make with your insurer.

No website and no contractor can approve, guarantee, or waive a claim, and offers to cover your deductible are a serious red flag. Documentation helps: photographs, storm dates, and a written inspection report.

Common roofing materials in the St. Louis area

• Three-tab asphalt shingles — the budget option, with the shortest expected life
• Architectural asphalt shingles — the most common residential choice, heavier and more dimensional
• Impact-resistant shingles — designed to better withstand hail, sometimes relevant to insurance discounts
• Metal panels and standing seam — long service life at a higher initial cost
• Low-slope membrane systems (TPO, EPDM, modified bitumen) — typical on commercial and flat roofs

Maintenance that actually extends roof life

• Keep gutters and valleys clear so water leaves the roof instead of sitting on it
• Trim branches back from the roof surface
• Check the attic after heavy rain for stains, dampness or daylight
• Look at pipe boots every couple of years — they crack long before shingles fail
• Verify intake and exhaust ventilation are both present and unobstructed
• Have the roof looked at after any significant hail or high-wind event

Roofing through the Missouri seasons

Spring brings the region's most active severe weather, and it is when hail and wind damage requests peak. Summer heat accelerates shingle aging and makes attic ventilation problems obvious. Fall is a practical time for inspections and planned replacement work. Winter freeze-thaw cycling and ice damming at the eaves expose weak flashing and inadequate insulation.