Asphalt shingle roofs typically last 18 to 25 years. If yours is in that window and showing curling shingles, widespread granule loss, or repeated leaks in different spots, patching becomes money thrown at a failing system. A roofer or independent inspector can tell you whether the deck and underlayment still have life. Once you cross into replacement territory, planning the project well matters more than rushing it, except in active-leak situations.
Insist that each contractor physically inspects the roof and attic before quoting. A legitimate bid specifies the shingle brand and line, underlayment type, ice-and-water shield coverage, drip edge, ventilation changes, flashing replacement versus reuse, decking repair pricing per sheet, tear-off and disposal, and the workmanship warranty separate from the manufacturer warranty. Bids that just say “replace roof, $14,000” cannot be compared and invite change-order surprises. Verify license, insurance certificates naming you as certificate holder, and local references from the past year.
Architectural asphalt shingles remain the value standard for most homes. In hail-prone regions, Class 4 impact-rated shingles often earn insurance discounts that offset their premium. Metal roofing costs roughly two to three times more upfront but can double the service life and performs well in snow country and wildfire zones. Whatever you choose, do not skimp on the system underneath: full flashing replacement, proper ridge and soffit ventilation, and ice-and-water shield at eaves and valleys determine whether the roof actually reaches its rated life.
Most single-family replacements take one to three days of work, but book several weeks out and avoid scheduling against a forecast of storms. Before the crew arrives, move vehicles, cover attic storage against dust, take down fragile wall hangings (tear-off shakes the whole house), and walk the yard with the foreman to agree where the dumpster and material staging go. Confirm in writing who pulls the permit; it should be the contractor.
A finished roof should pass three checks: the municipal inspection where required, your own walkaround looking at straight shingle lines, finished flashing, intact gutters and cleanup including a magnetic nail sweep, and delivery of paperwork, the permit sign-off, manufacturer warranty registration, and the contractor's workmanship warranty in writing. Pay the final installment only after all three. A deposit of 10 to 30 percent up front is normal; paying in full before completion is not.
Handled this way, a roof replacement is a once-in-decades project that protects everything under it, and adds real resale documentation when you eventually sell.
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