Two roofing quotes for the same house can differ by thousands of dollars — and the cheaper one is often the more expensive one once the “extras” arrive. The trick isn’t finding the lowest number. It’s learning to read what each line actually promises.
A roof is one of the largest single repairs a Maryland or DC homeowner ever pays for — commonly $10,000 to $25,000+. Vague quotes are designed to look cheap up front and grow once the crew is on your roof. A clear, itemized quote lets you compare bids honestly and locks the price before work starts.
Tear-Off vs. Layover — Know Which You’re Buying
A tear-off removes the old roof down to the deck; a layover installs new shingles on top of the old ones. Layovers are cheaper today and costlier later — they hide rot and often void warranties. The quote should say plainly which one it is.
Check the Squares and the Material Spec
Roofing is measured in squares (100 sq ft each). The quote should list the number of squares, the shingle brand and line, and the underlayment. “Architectural shingles” with no brand is a placeholder, not a spec.
Look for Flashing, Underlayment, and Ventilation
The leaks that come back are almost always at the details: flashing around chimneys and valleys, ice-and-water shield, drip edge, and proper ventilation. Cheap quotes win by quietly leaving these out.
Read the Warranty — Both of Them
There are two warranties: the manufacturer’s (on the shingles) and the workmanship (on the install). A great shingle installed badly still leaks, so the workmanship warranty — and how long the company has existed to honor it — matters most.
Watch the Payment Terms and “Allowances”
Large up-front deposits and open-ended “allowances for unforeseen decking” are where budgets blow up. A fair quote caps decking replacement at a stated per-sheet price so a surprise can’t become a blank check.
What a Complete Roofing Quote Includes
- Tear-off or layover clearly stated
- Number of squares and named shingle brand/line
- Flashing, underlayment, drip edge, ventilation as line items
- Both manufacturer and workmanship warranties
- Capped decking-replacement price and cleanup/permit terms
Common Mistakes Homeowners Make
- Choosing the lowest number without comparing what’s included
- Accepting “architectural shingles” with no brand or line named
- Missing that the cheap bid is a layover, not a tear-off
- Ignoring the open-ended “decking allowance”
- Never reading the workmanship warranty length
The Bottom Line
A roofing quote is a promise written in line items. When two bids name the same squares, the same shingles, the same flashing, and the same warranties, you can finally compare price honestly. When one is vague, it isn’t cheaper — it’s just unfinished. Make every quote spell it out before you sign.