Compare 6 flat and commercial roofing contractors in New Haven. Learn what the work involves, what to check before hiring, and how our rankings are built.
Flat and commercial roofing covers a different set of problems than the pitched asphalt-shingle roofs on most New Haven houses. Warehouses, retail strips, multi-family buildings, and low-slope additions in neighborhoods like Fair Haven, the Hill, and Long Wharf typically use built-up roofing (BUR), modified bitumen, single-ply membranes (TPO, EPDM, PVC), or coatings applied over a low-pitch or flat deck. The work includes new installs, full tear-off and replacement, membrane repairs, recoating, drainage and scupper fixes, and the flashing details around HVAC curbs, parapets, and roof penetrations that cause most leaks. New Haven's freeze-thaw winters and summer thunderstorms put real stress on seams and drains, so ponding water and clogged drains are the two issues that show up again and again in service calls here.
We list 6 flat and commercial roofing contractors serving the New Haven area. Before hiring, ask what membrane system they specialize in, whether they carry commercial general liability and workers' comp (required on any job with a crew on a roof), whether they pull permits for full replacements, and whether the manufacturer warranty requires their own certified installers. Get a written scope that spells out insulation, tapered systems for drainage, and flashing detail, not just square footage and price.
Our scoring weighs licensing and insurance, verified customer feedback, responsiveness, and the specific commercial and flat-roof experience each contractor documents, not just star ratings. See the full methodology at /our-rubric/, or go straight to the ranked list at /new-haven/best/roofing-contractors/ to compare all contractors side by side.
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6 businesses, scored on recent reviews. The order weighs each business's overall score by how much of its reviewed work is flat & commercial roofing, so a lower-scored specialist can rank above a higher-scored generalist.
All seven reviews rate AED Roofers five stars. Reviewers consistently praise Ezekiel and his crew for professionalism, punctuality, and using quality materials. One customer with a long history of leak issues credits the team with finally solving the problem. Jobs are completed on time with jobsites left clean.
All 11 reviews rate Giant Roofing five stars. Customers praise the crew for arriving on time, working cleanly, and finishing quickly. Several note that technicians diagnose roof leaks other companies missed, explain conditions clearly without pressure, and stand behind their work with warranties. Pricing consistently described as fair; one reviewer noted they chose Giant Roofing because quality mattered more than being the cheapest option.
One reviewer called out fast, professional repair work completed within budget, with a crew that cleaned up properly after finishing.
Both reviewers used CT Roofing twice and rated the work excellent. Jonathan quoted fairly and finished on schedule; the second customer returned after four years because the first job at his parents' house went so well.
Two older reviews split sharply: one five-star caller praises the work highly, while a one-star customer reports shingles installed over rotted plywood without proper paper underlayment, questioning whether poor experience stemmed from inexperience or deliberate cost-cutting. Limited recent review evidence.
Let us match you with flat & commercial roofing in New Haven
No cost, no obligation. Tell us about your roofing project and we'll match you with qualified contractors.
Not enough recent reviews yet to synthesise a reliable sentiment read for this business.
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Last updated 2026-08-26