Roof Replacement & Repair in Calvert County, MD

What we install

Arndt Construction installs roofing systems engineered for Maryland weather — high humidity in summer, freeze-thaw cycles in winter, and the wind and hail patterns that come off the Bay. Our crew has been on Calvert County roofs since 2019, and our license (MHIC #115973) is current and verifiable.

Architectural asphalt shingles

The most common choice for residential re-roofs in Southern Maryland. Architectural shingles last 25-50 years depending on grade, resist wind up to 130 MPH on impact-rated lines, and carry strong manufacturer warranties. We install GAF, CertainTeed, and Owens Corning lines.

Standing-seam metal roofing

For homeowners who want a 50+ year roof, prefer the look of metal, or live in heavy snow-load areas. Standing-seam systems shed snow cleanly, resist algae and moss, and pair well with solar.

Flat-roof systems (TPO, EPDM)

For commercial buildings, additions, and porch roofs. TPO membranes give you a 20-30 year service life when installed correctly with proper drainage and seam welding.

Roof repair

Not every roof needs replacement. We handle isolated repairs — wind-lifted shingles, popped nails, flashing leaks, soft decking, and chimney/skylight seal failures — and we'll tell you honestly if a repair is the right answer instead of pushing for a full re-roof.

Our process

1. Free on-site inspection. We walk every plane, document with photos, and check decking, flashing, vents, and ridge.
2. Written line-item estimate. No phone-call ballparks. Materials, labor, code upgrades, dumpster, and cleanup all itemized.
3. Schedule and order materials. Most re-roofs schedule within 1-2 weeks; storm work moves faster.
4. Install day. Tear-off, decking inspection, underlayment, shingles, ridge ventilation, cleanup. One day for most homes.
5. Final walk-through. We walk it with you, hand over warranty paperwork, and leave the site cleaner than we found it.

What you should expect from a Maryland roofer

An MHIC-licensed contractor (ours: #115973). Proof of general liability and workers' comp insurance. A written estimate before you sign anything. No upfront deposit larger than legally allowed. A clear timeline. A workmanship warranty in writing. Anyone skipping these basics is not someone you should hire — full stop.