Mastrangelo and Sons

Mastrangelo and Sons works in slate and copper — restoring old slate and copper roofs and installing new ones, alongside tar-and-gravel and rubber roofing and the custom metal fabrication that goes with that kind of work. Tony Mastrangelo started the Belmont business in 1984, and the company describes itself as second-generation and family-run, with the founder now working alongside his two sons: 42 years in the trade by its own count. Its Massachusetts home improvement contractor registration, #165996, is active on the state registry in the company's name, and BuildZoom's permit history shows six permitted projects. The one written account on Google, from April 2025, is a one-star complaint about parking rather than about any job: the reviewer says the company parks in residential spots and refuses to move. The Google page averages 4.0 across four ratings. Slate and copper are specialist work, and a shop that does its own metal fabrication is the one you call for a historic or a standing-seam roof rather than a straightforward shingle tear-off. Ask to see slate or copper jobs it has finished nearby, and settle where the crew will park before the first morning.