Gaithersburg's highest-rated roof replacement companies

Gaithersburg has 10 roof replacement companies on this page; we don't have a license file for Gaithersburg, so they're ranked by Google rating instead. Between 47 and 695 reviews back each listing, which is part of how we decided who qualified. See How We Verify for the full method behind Gaithersburg's list.

Google Maps ratings checked September 30, 2026 · How we rank

1989median year homes were built

Housing stock in Gaithersburg, MD

Half the houses in Gaithersburg were built before 1989, per Census Bureau estimates.

32% of the city's housing units went up before 1980, old enough that many are on a second or third roof.

That's part of why 10 roofing contractors keep a listing here for Gaithersburg.

Data: U.S. Census Bureau, American Community Survey 5-Year Estimates, table-based Summary File (2024 table-based Summary File) (2024 table-based Summary File).

Top-rated roof replacement companies serving Gaithersburg, MD

Sorted highest first by a Google rating weighted against how many reviews back it; that sort isn't a license check, so confirm the paperwork yourself.

Top-rated roofing contractors in and near Gaithersburg, MD, with Google ratings
Rank	Business	Google rating	Reviews	Category	Area	Google Maps listing
1	Keystone Building and Restoration, LLC	5.0 out of 5 on Google	293	Roofing contractor	Gaithersburg 20877	Google reviews
2	GoodGood Roofing & Siding	5.0 out of 5 on Google	223	Roofing contractor	Gaithersburg 20877	Google reviews
3	ARHT Home Solutions Roofing & Siding	5.0 out of 5 on Google	179	Roofing contractor	Derwood 20855	Google reviews
4	Capitol Improvements - Gaithersburg Roofing Company & Siding Contractors	5.0 out of 5 on Google	160	Roofing contractor	Gaithersburg 20879	Google reviews
5	SKYCON ROOFING & RESTORATION	5.0 out of 5 on Google	92	Roofing contractor	Rockville 20850	Google reviews
6	American Custom Contractors	4.9 out of 5 on Google	695	Roofing contractor	Rockville 20855	Google reviews
7	Moose Exteriors	5.0 out of 5 on Google	47	Roofing contractor	Gaithersburg 20877	Google reviews
8	BRAX Roofing	4.8 out of 5 on Google	495	Roofing contractor	Gaithersburg 20879	Google reviews
9	Shanco Roofing	4.8 out of 5 on Google	414	Roofing contractor	Gaithersburg 20879	Google reviews
10	D&M Roofing and Home Remodeling	4.9 out of 5 on Google	49	Roofing contractor	Gaithersburg 20877	Google reviews

Questions to ask before you sign

Can you show me your license or registration number, and does it match what's on file with the state?
Will you pull the roofing permit yourself, and will you give me the permit number once it's issued?
How many existing layers are on my roof now, and does that allow a recover under the building code, or does it need to come off?
What's the full written scope: materials, brand, quantity, start date, and payment schedule?
What does the manufacturer's warranty cover, separate from your own workmanship warranty?
Who is responsible if a subcontractor or material supplier on my job goes unpaid?

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