Best rated roofers in Derry
Ranked by the share of Google ratings that are one or two stars — lowest first. 13 of the 21 roofers we list in Derry have enough ratings to compare, against a typical New Hampshire roofer at 1.5%.
The 13 best rated roofers we list in Derry
The top 3 are tied at 0% — none of their counted ratings is one or two stars. They share a position number because nothing separates them on the figure this list is ordered by; within the tie, more ratings counted comes first.
| # | Roofing contractor | Google average | Ratings counted | One and two star | Contact |
|---|---|---|---|---|---|
| 1 | Signature Roofingprofessional crew, respectful crew, cleanup5.086 ratings0% one and two star(603) 319-6125 | 5.0 | 86 | 0%0 of 86 | (603) 319-6125 |
| 1 | McPhail Siding and Roofing LLCfast job, competitive pricing, estimate5.060 ratings0% one and two star(603) 552-0393 | 5.0 | 60 | 0%0 of 60 | (603) 552-0393 |
| 1 | iROOF LLCfair pricing, polite staff, small jobs5.050 ratings0% one and two star(603) 718-1079 | 5.0 | 50 | 0%0 of 50 | (603) 718-1079 |
| 4 | MGS Constructionsiding, respectful crew, quick work5.0583 ratings0.3% one and two star(603) 237-1011 | 5.0 | 583 | 0.3%2 of 583 | (603) 237-1011 |
| 5 | Lane Roofingestimate, courteous staff, dumpster removal5.01,158 ratings0.9% one and two star(603) 479-2144 | 5.0 | 1,158 | 0.9%11 of 1,158 | (603) 479-2144 |
| 6 | New Heights Roofingnew roof, skylight replacement, courteous crew4.967 ratings1.5% one and two star(603) 548-4484 | 4.9 | 67 | 1.5%1 of 67 | (603) 548-4484 |
| 7 | J. Carnes & Son Roofinganswering questions, polite crew, new roof4.9368 ratings1.6% one and two star(603) 686-7763 | 4.9 | 368 | 1.6%6 of 368 | (603) 686-7763 |
| 8 | Manny's Roofingfair pricing, skylight replacement, quick crew4.9123 ratings2.4% one and two star(978) 703-3167 | 4.9 | 123 | 2.4%3 of 123 | (978) 703-3167 |
| 9 | Rj's Roofing and Siding LLCprofessional crew, high quality work, competitive pricing4.867 ratings3.0% one and two star(603) 948-8566 | 4.8 | 67 | 3.0%2 of 67 | (603) 948-8566 |
| 10 | Mr. B's Roofingcleanup, estimate, new roof4.961 ratings3.3% one and two star(603) 965-8047 | 4.9 | 61 | 3.3%2 of 61 | (603) 965-8047 |
| 11 | DeFrancesco Quality Roofing, Siding and Windowssiding installation, hard working crew, estimates4.8129 ratings3.9% one and two star(603) 818-4075 | 4.8 | 129 | 3.9%5 of 129 | (603) 818-4075 |
| 12 | Merrimack Valley Roofinggutters, fair pricing, quick quote4.5135 ratings11.1% one and two star(978) 662-7079 | 4.5 | 135 | 11.1%15 of 135 | (978) 662-7079 |
| 13 | Derry Roofingcleanup, leak, roof replacement4.341 ratings17.1% one and two star(603) 479-8862 | 4.3 | 41 | 17.1%7 of 41 | (603) 479-8862 |
How this order is decided
One sort, on one figure: the share of a roofer’s Google ratings that are one or two stars, lowest first. Both numbers behind it — how many ratings are one or two stars, and how many there are in total — are printed beside every name, so you can check the order against the page and the page against Google.
Roofers whose share prints the same figure share a position number, because they are tied on the only thing being ordered. Within a tie the one with more ratings behind it is listed first; if that is equal too, the higher star average, and then alphabetically. Those last steps only ever separate roofers the figure itself cannot, and they exist so the order is the same every time the site is rebuilt rather than shuffling.
There is no Roof Warden score, no editorial pick and nothing anyone can pay for. We only rank roofers we list with at least 40 ratings, because below that a single unhappy customer swings the percentage by more than the differences we would be ordering on. That leaves 8 roofers on this page unranked — which says nothing about their work, only that there are too few ratings to sort on.
This is not every roofer in Derry. We list 21, captured from public Google listings, and rank the 13 with enough ratings to compare. Treat it as a shortlist to check, not a complete market.
All 21 roofers we list in Derry · Best rated across New Hampshire