How to Compare Roofing Contractor Quotes

How many roofing quotes should you get?

Get three. Two doesn’t give you enough to spot the outlier, and once you’re past three or four you’re mostly burning your own time and annoying good contractors who can tell they’re bid number nine. Three gives you a low, a high, and a middle, and the middle is often where the honest number lives.

One catch: three quotes only help if all three are pricing the same work. If they’re not, you are not really weighing prices. You are weighing different projects that each happen to sit on a roof.

The three things every roofer had to guess at

Nobody who bid your roof could see all of it. Three things were hidden from every one of them, and each roofer had to put a number on them anyway. That is where your spread comes from.

The wood underneath is the first. Not one of them knows how much rotted decking is under your shingles, because the only way to find out is to tear the roof off, and nobody tears a roof off to write an estimate. The second is how hard your house is to work on. Whether a dump trailer can back near the eave or has to sit at the curb. Whether bundles ride up on a conveyor or go up on a man’s shoulder, one at a time, past your pool. Whether the pitch is gentle enough to walk or steep enough that the crew has to rig staging before anybody touches a shingle. The third is what is stacked up there already, because a second layer doubles what comes off and doubles what goes in the dumpster.

Here is the part that matters. A roofer can price those three honestly and hand you a bigger number, or he can price them optimistically, win the job, and find them on tear off day when you have no roof and no say in the price. Both bids look the same on paper. They are not the same bid. So when you see a gap, do not ask who is cheapest. Ask who put the unknowns in writing.

What a complete roofing estimate should include

A real estimate breaks the job into line items so you can see what you’re actually paying for. A single line that reads “New roof: $12,000” tells you nothing and hides everything. Look for each of these spelled out:

• Tear-off and disposal: the count of existing layers stripped, with haul-away included
• Decking: an inspection, and a set price per sheet if the plywood underneath turns out rotted
• Underlayment: synthetic or felt, plus ice-and-water shield at the eaves and valleys
• Flashing: new drip edge and new flashing at chimneys, walls, valleys, and every pipe and vent
• Shingles: the actual brand, line, color, and the wind and warranty rating, not just the word “architectural”
• Ventilation: ridge vent or other intake and exhaust work
• Size and rate: number of squares (1 square = 100 sq ft) and the price per square
• Cleanup: magnetic nail sweep, debris removal, and the permit cost
• Warranty: the workmanship warranty length, stated separately from the manufacturer warranty

Reading the price per square

Take the bid total and split it across your squares, and you get the price per square. That’s the number that lets you compare a bid on a small ranch against a bid on a big two-story, because it strips out roof size. If one roofer’s price per square is way off the others, that’s not automatically a deal or a scam. It’s a question to ask.

How to compare roofing quotes, line by line

Here’s the actual method. It takes about twenty minutes and saves you from the most common roofing mistake there is: picking a number instead of a job.

1. 1Line the three estimates up side by side, using a simple spreadsheet or the columns from a comparison worksheet.
2. 2Match the scope first. Same tear-off depth, same underlayment, same flashing plan, same ventilation. Normalize the work before you look at any price.
3. 3Compare price per square, not the bottom-line total.
4. 4Note what’s missing. A bid with no flashing line, no permit, or no decking allowance isn’t cheaper. It’s incomplete, and the difference shows up as a change order later.
5. 5Check the two warranties separately: workmanship and manufacturer.
6. 6Only now, after all of that, look at the totals.

Red flags in a low roofing quote

A rock-bottom price is not proof of a scam by itself. Still, when one bid drops well beneath the rest, it is usually because a line on this list got quietly dropped:

• No tear-off: going over the old shingles to save money, which adds weight, traps heat, hides rot, and shortens the new roof’s life
• Reused flashing: recycled flashing is where a fresh roof most often starts to leak
• Vague materials: “architectural shingles” with no brand or line named
• A large deposit, or a discount for paying cash
• No written scope, and no permit line at all

When one bidder claims code forces the bigger job

Here is a scope gap that wears a disguise. One roofer bids the repair you asked for. Another says code will not let him stop there, cites the “25% rule,” and bids a full tear off. Those two bids are now impossible to compare, and the second one is quoting a rule that almost certainly does not apply to you: it belongs to Florida, and Florida narrowed it in 2022. Our guide to why roofing quotes differ walks through what it actually says.

So treat it like any other scope difference. Ask him to name the code section and show you where your building department enforces it. If he can, the bigger job is real and everyone else needs to rebid it. If he cannot, you just found out which of your three bids was padded, and you found out before you paid for it.

When it makes sense to negotiate

Roofing isn’t a flea market, and leaning on a good contractor to shave corners just to hit a number brings back the exact problems this guide helps you dodge. But when two solid bids land close and one sits higher, it’s fair to ask that roofer to explain the difference or match the scope.

Timing is worth knowing, and most of what you have read about it is wrong. Federal employment figures show roofing crews are still flat out through October. The real lull is January and February, when the industry sheds about ten percent of its workforce. That is when a roofer has an empty calendar and a reason to want your job. We will not promise you a discount for waiting, because nobody publishes roofing prices and anyone who tells you winter is cheaper is guessing. What we can tell you is that a hungry crew answers the phone.