On Top Roofing

On Top Roofing is a Millbury-based roofing contractor led by owner Tim, a BBB-accredited business with an A+ rating and both a business and individual construction license on file. It does residential and commercial roofing, metal roofing, siding, and gutters. The volume of praise here is substantial — 4.9 stars from 114 Google ratings, similarly strong numbers on Angi and HomeAdvisor, and dozens of detailed reviews describing full roof replacements finished in a single day, chimney flashing repairs, new gutters and fascia work, and same-day dispatch during ice dam emergencies. Reviewers name Tim and project manager Jefferson constantly, describing clear communication through the process, crews that clean up daily, and pricing that came in competitive against multiple quotes. One reviewer, a third-generation homeowner in a historic family house, described the crew's care in preserving the property; another described the company resolving extensive mold and water damage left by a previous contractor's poor work on a triple-decker. There are real gaps in the intake process worth knowing about. A 2025 review described calling repeatedly over several weeks for an estimate that never arrived, getting the runaround each time. A 2024 Angi review described a similarly slow multi-week wait for a quote, and then a crew showing up to start work without advance notice — the homeowner happened to be home that day. A 2022 review, separately, described a specialty de-icing cable installation done by installers who didn't seem to know the product. The overwhelming volume of the reviews here describes fast, high-quality roofing work once a job is underway; the recurring friction point is getting a first estimate and firm scheduling nailed down. For a roof replacement or repair, it's worth pressing for a written estimate timeline up front, but the work itself has strong, wide-ranging support behind it.