Replacing a roof in Gaithersburg
Montgomery County had 55 hail reports in 2016-2025, and the biggest stones were 2.75 inches. For a Gaithersburg homeowner planning a new roof, that makes impact-rated shingles a sensible option to raise with the contractor.
Only about 20 percent of homes in the city are detached houses. If you live in a townhouse or another attached home, a replacement may need to be coordinated with neighbors so the rooflines match and the seams between units are handled properly.
When should the whole roof go? Typical triggers are age, wear spread over the entire surface rather than one area, water damage in the decking, and existing layers that have to be removed anyway. Patching works for small, isolated problems, not for a roof that is failing everywhere.
Talk through the material, the start date and expected duration, the manufacturer's warranty on materials, and where the tear-off debris goes once it is hauled away for disposal. Permit requirements depend on the scope: shingles alone are treated differently from sheathing replacement, and historic district properties have their own rules. Confirm with the City of Gaithersburg Planning and Code Administration - Permits and Inspections and decide who applies.