Roof replacement means stripping the existing roof down to the deck (or in some cases overlaying, though most reputable contractors in Roswell will recommend a full tear-off) and installing new underlayment, flashing, and roof covering. It's a bigger job than a repair or a patch: it typically takes one to three days depending on the size and pitch of the house, involves a dumpster or trailer for tearing off old material, and requires a permit from the city or county. We've listed 41 roofing contractors in Roswell that handle this kind of work, ranging from small local crews to larger regional companies.
Because a roof replacement is a major expense and the work is hard to inspect once it's finished, the contractor you pick matters more than the shingle brand. Look for proof of active licensing and insurance (general liability and workers' comp), a written estimate that spells out materials, underlayment type, ventilation work, and flashing details, and a clear warranty covering both materials and labor. Ask how they handle permitting, cleanup, and what happens if they find rotted decking once the old roof comes off.
Our scoring weighs verified licensing and insurance, review consistency over time, response to negative feedback, and how clearly a company communicates scope and pricing, not just star averages. For a full ranked breakdown of Roswell roofers, see our best roofing contractors in Roswell guide. Details on how we build these rankings are on our methodology page.