Giannini Roofing and Siding is a family-owned roofing, siding, window, and gutter contractor on the South Shore, founded in 2021 by Matthew Giannini, who says he brings over 20 years of roofing and siding experience to the business. The company is based in Abington and states it works Bridgewater, Brockton, Weymouth, Marshfield, Scituate, Cohasset, and a dozen more South Shore towns.
Ninety-two Google reviews from 2024 through 2026 run five stars straight through, and this year's reviews keep telling the same story: Matt comes out himself, gives a straight answer, and doesn't push a bigger job than the house needs. One customer this summer said he inspected a leak and told them the roof could be repaired rather than replaced; another described him walking through detailed, transparent pricing while they picked a siding color, and a third credited him with handling temporary repairs and insurance-claim guidance after wind damage, then finishing the full replacement fast. Reviewers across the past two years consistently mention the crew clearing debris and staging areas before they leave.
The work runs beyond roofs — siding, windows, doors, and gutters all show up repeatedly in reviews. In a February 2026 stretch, several customers called on the crew for emergency snow shoveling and ice-dam treatment during a hard winter, and older reviews describe a chimney-flashing repair and a skylight replacement, so the crew's range extends past a standard reroof.
Its Massachusetts home improvement contractor registration is active, held under Giannini Roofing and Siding LLC.
One thing worth asking about directly: OSHA inspection records show the company was cited once, in an April 2025 inspection, with a $2,000 proposed penalty.
Between the volume of specific, repeat praise this year and an owner reviewers say still runs the jobs personally, Giannini is a strong call for a roof replacement, re-siding, or a full exterior refresh on a South Shore home — confirm current safety practices and get the scope of work in writing before the crew starts.
