How much does a roof replacement cost in Montgomery County, MD in 2026?

Here is the number most roofing sites won't print. In 2026, a full architectural-shingle roof replacement in Montgomery County from a licensed, insured contractor runs roughly $600 to $800 per roofing square installed — that's $6.00 to $8.00 per square foot of actual roof surface. For the typical county home carrying 20 to 30 squares of roof, the finished contract lands between $12,000 and $24,000.

You will see wider numbers online — market surveys for Maryland span roughly $4.50 to $8.50 per square foot — but the low end of that band is populated by low-bid crews, partial scopes, and quotes that grow after tear-off. This guide explains what the honest number is made of, why cheap bids are usually expensive, and how to compare quotes so the price you sign is the price you pay.

First, understand how roofers price: the "square"

Roofing is priced per square — 100 square feet of roof surface. Roof surface is not the same as your home's floor area: pitch and overhangs mean the roof usually measures 1.3 to 1.5 times the footprint. A 1,800 sq ft colonial in Rockville typically carries 23 to 27 squares. That is why two neighbors with "the same size house" can get quotes thousands of dollars apart — one has a walkable 5/12 roof, the other has a 10/12 with three dormers.

You can get your own measurement in about 60 seconds with our free satellite roof quote — no ladder, no visit, no phone call required.

2026 installed cost by material, per square

Three-tab shingles still exist at $3.50–$5.50 per square foot installed, but we rarely recommend them in this climate: they carry lower wind ratings and shorter life for a saving that disappears the first time a thunderstorm lifts a course of tabs. If you're weighing materials, our comparison of architectural vs designer shingles vs metal for the DMV climate goes deeper.

What moves your number inside the range

• Pitch. Anything above roughly 8/12 requires staging, harnesses, and slower work. Steep sections add about $90–$130 per square.
• Complexity. Valleys, dormers, skylights, and chimneys each add flashing work and waste factor. Complex rooflines add roughly $60–$95 per square.
• Tear-off layers. Code in most Maryland jurisdictions allows a maximum of two shingle layers. A second layer to remove adds labor and disposal weight.
• Decking condition. Rotted sheathing is the most common surprise. Good contractors state a per-sheet replacement price (typically $70–$120 per 4x8 sheet) in the contract before work starts, so a surprise never becomes a negotiation.
• Permit and disposal. Montgomery County permits typically run $300+, and a 25-square tear-off generates about three tons of debris. Both belong in the written quote.
• Ventilation corrections. Many older Silver Spring and Wheaton homes are under-vented, which cooks shingles from below. Ridge vent and intake corrections add a few hundred dollars and are worth every cent of it.

Why the cheap bid is usually the expensive one

The math is not complicated. In the DMV, hard costs — shingles, underlayment, flashing, accessories, dump fees, and a legal, insured crew — run about $300 to $350 per square before the contractor earns a dollar. A bid at $450 per square has roughly $100 of headroom to cover workers' comp, liability insurance, warranty service, supervision, and profit. Something gives, and it is usually one of these:

• Reused step flashing and chimney flashing (the #1 source of leaks two winters later);
• No ice-and-water shield at eaves and valleys, or 15 lb felt where synthetic underlayment was quoted elsewhere;
• Uninsured labor — meaning a fall on your property becomes your homeowner liability;
• A "we found rot" change order priced after your old roof is already in the dumpster.

A worked example

A 2,100 sq ft Gaithersburg colonial, 6/12 pitch, one layer, two valleys, one chimney: roof measures ~26 squares. At $650–$720 per square for an architectural system with full accessories, the honest quote lands at $17,000–$18,700, including permit and disposal. The same house with a 10/12 pitch and three dormers would price closer to $21,000–$23,000. A rancher in Aspen Hill at 18 squares and 4/12 pitch might come in near $11,500–$13,000.

Three ways Montgomery County homeowners actually pay for it

1. Cash / check — usually with a deposit and balance on completion. Never pay a large cash deposit to a door-knocker.
2. Financing — $0-down plans on approved credit, 12–180 month terms. Run your own numbers on our roof financing calculator; most architectural roofs finance in the range of a monthly utility bill.
3. Insurance — only when a storm actually damaged the roof. If hail or wind caused the damage, your homeowners policy may cover replacement and your out-of-pocket cost is typically your deductible. Age and wear are never covered, and no honest contractor will tell you otherwise. If you suspect storm damage, start with our storm-damage checklist — and know that Maryland law prohibits any contractor from paying or waiving your deductible.

Get the exact number for your address

Ranges are for planning; roofs are priced by measurement. Two free ways to move from range to quote: the instant satellite estimate (60 seconds, online) or a free on-site inspection with photo documentation and a written, fixed, itemized price. We serve every corner of the county — see our local guides for Rockville, Silver Spring, Bethesda, and Gaithersburg, or the full roof replacement service page.

Frequently asked questions