Replacing a metal roof is a different job from replacing shingles, and the decisions you make at the start — panel profile, gauge, seam type, what happens to the deck underneath — are the ones you live with for decades. Here's what the work actually involves and how to judge the quotes you're getting.
Most of the metal roofs coming off houses around Columbus are exposed-fastener panels, often agricultural-grade corrugated or R-panel installed over an older roof. These fail at the screws first. The neoprene washers harden and shrink, the holes elongate from thermal movement, and the fasteners back out a thread at a time. If you can see daylight gaps around screw heads from a ladder, or you've already had one round of re-screwing done, you're at the point where further repair is money spent on a short extension. Standing seam roofs fail differently — usually at penetrations, valleys, and sidewall flashings rather than in the field. A standing seam panel with intact finish and sound seams can often be kept while flashing is rebuilt. Rust blooming from the cut edges at the eaves, chalking that rubs off on your hand, or panels that have oil-canned severely enough to pond water are reasons to plan a full replacement.
The old panels come off in strips, along with trim, drip edge, and whatever underlayment is beneath. That's when the deck gets inspected, and it's also where honest estimates differ from optimistic ones — soft sheathing around chimneys, valleys, and north-facing eaves is common on older Columbus housing stock and is impossible to price accurately until it's exposed. Expect a per-sheet allowance in the contract rather than a guess. Then goes down ice-and-water membrane at eaves, valleys, and around penetrations, synthetic underlayment across the field, and a high-temperature slip sheet if the panel system calls for it. Panels are usually roll-formed to length, so a long run arrives as one piece with no horizontal seams. Clips, not face screws, hold a standing seam system, which lets the metal expand and contract through a Columbus summer-to-winter swing without tearing at the fastener.
Roof pitch and complexity matter more than square footage. A simple gable goes fast; hips, dormers, dead valleys, and multiple chimneys multiply the flashing work, and flashing is where labor hours and leaks both concentrate. Low-slope sections need a mechanically seamed panel rather than a snap-lock, which costs more. Gauge is a real variable — 24-gauge resists denting and oil canning better than 26. So is the finish: a PVDF coating holds color far longer than a polyester one, which matters on south and west exposures. Deck replacement, chimney crickets, new gutters, and ventilation corrections round out the differences between two quotes that look like they're for the same roof.
Ask for the panel manufacturer and specific profile, the gauge, the coating type, and whether panels are formed on site. Ask how valleys and sidewalls are flashed and whether exposed fasteners appear anywhere in the finished roof. Check permit requirements for your jurisdiction, and in Dublin or Upper Arlington confirm any HOA color and material approvals before material is ordered.
Capital Ridge Roof Systems is licensed and insured, offers financing, and accepts a range of payment methods. Office hours are Monday to Friday, 8AM to 6PM.