A full roof replacement means stripping the old shingles, felt or metal down to the deck, checking the sheathing for rot, then rebuilding the whole system: underlayment, ice-and-water shield at eaves and valleys, drip edge, new field material, flashing around chimneys and vents, and ridge ventilation. It's a bigger job than a repair or a re-roof over existing layers, and on most Norwalk homes it runs anywhere from a day to about a week depending on roof size, pitch, and material. We list 37 contractors in this category who handle asphalt shingle, metal, flat/low-slope, and slate or tile replacement across Norwalk's older colonials and newer builds alike.
Before hiring, ask for a written estimate that breaks out tear-off, deck repair (as a per-sheet rate, not a vague allowance), underlayment type, and warranty terms for both materials and labor. Confirm the crew is licensed and insured in Connecticut, pulls a town permit, and disposes of debris properly. Get references from jobs done in the last year or two, not just older ones.
Our scoring weighs verified licensing and insurance, review consistency over time, response speed, and how contractors handle complaints, not just star averages. See the full breakdown of how we score on our methodology page, or jump straight to the ranked list of Norwalk's best roofing contractors to compare the top names side by side.
