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Why are my roofing quotes thousands of dollars apart?

Direct Answer

Because the bids describe different jobs. Quotes on the same roof differ by thousands over scope: which materials are specified, what gets replaced versus reused, and whether code items are included or quietly skipped. Ask why a bid is higher: every one of my estimators can answer in terms that matter to you.

Mattie Tueller

Mattie Tueller

Owner & General Manager, Master Roofing · Utah License #10694610-5501

Best Move

Compare what each bid actually includes, line by line, before you let yourself compare the totals.

Why It Works

Three bids on one roof usually describe three different jobs. The price gap lives in the scope.

Next Step

Ask every bidder what their number includes for ventilation and underlayment.

What you need to know

In Utah the quiet gap between bids is ventilation: the one that skipped it looks thousands cheaper. Your attic pays the difference.

Mattie Tueller, Master Roofing

The price gap starts in the scope

Two bids on the same roof can describe two different jobs, and the totals hide it. Before any comparison means anything, you have to know what each number actually buys.

The scope items that quietly move a bid by thousands:

  • Tear-off or layover: stripping to the deck versus covering the old layer is a different job at a different price
  • Underlayment and ice shield: the grade and how much of the roof they cover
  • Flashings: replaced new or reused from the old roof
  • Deck repair: an allowance for bad wood, or a surprise change order later
  • Disposal and cleanup: included, or quietly left out

The National Roofing Contractors Association's consumer guidance says the same thing: a proper proposal spells out materials and scope in writing. A bid that stays vague is cheap because it has not committed to anything yet.

The quiet gap: code items done or skipped

The least visible reason one bid runs thousands higher is that it includes work the code requires and the cheaper bid skips. Attic ventilation is the classic case: the residential code sets a required ratio of vent area to attic space, including intake at the eaves. Meeting it costs real money.

Intake ventilation is a real cost. It is a common reason one bid sits higher than another. We price the whole roof, ventilation included, where a lot of companies shortcut around it.

Why the skipped version still passes

Nobody measures the ratio after the job: a roof can pass inspection and still be under-ventilated, so the shortcut never gets caught. The homeowner sees two numbers and no visible difference. The difference shows up later, as a hot upstairs, winter condensation. A shingle warranty a manufacturer can void over the ratio. The cheaper bid did not find a smarter price; it left part of the job out.

Materials move the number more than homeowners expect

Bids also diverge because they price different materials, sometimes without making that obvious. "Architectural shingle" covers a wide quality range. The class of underlayment, ice shield, and flashing metal underneath it varies just as much.

  1. Shingle class: standard and thicker premium shingles differ in asphalt content, not just looks. the materials cluster covers what the difference buys.
  2. Material category: if one bid is metal and another asphalt, the totals aren't comparable at all. Metal runs 1.75 to 2 times the cost of shingles and delivers two to two and a half times the lifespan. the comparison has its own full answer.
  3. The named-product test: a bid that names manufacturer and product line can be checked; "30-year shingle" alone cannot.

Ask each bidder to name every product on the bid. The vague ones get specific or get explained.

The part of the gap that isn't the roof at all

Some of the price difference belongs to the companies rather than the job: what insurance they carry, who actually does the work, and whether anyone checks it. Those differences are real, they protect you. They cost money that shows up in the bid. Why one company prices higher than another is its own story in the Resource Center.

What you can do with all of this today is compare bids fairly:

  1. Get every scope item in writing: tear-off, underlayment, ice shield, flashings, deck allowance, disposal
  2. Ask each bidder for their ventilation math: intake, exhaust, and the ratio
  3. Ask for manufacturer and product names on every material
  4. Ask what the warranty covers, on workmanship and on product, and for how long

The Better Business Bureau recommends comparing multiple written bids on scope. This is exactly why: the totals only make sense once the jobs match.

Mattie's Take

Most of my customers come to me the same way: three bids on the kitchen table, thousands of dollars apart. No way to tell who is being straight with them. The instinct is to assume someone is padding the number. Usually the truth is simpler and more fixable: the bids describe different jobs.

Take intake ventilation. The code requires it, your attic needs it, and almost nobody checks it. So the cheaper bid leaves it out and looks smart doing it. Master Roofing prices it in. That single line item is often most of the gap you are staring at.

So ask the question that untangles everything: why is your number higher? An honest company answers in specifics, line by line, in terms that matter to you. A company that cannot explain its own price has told you something too. The gap between bids is not noise. It is information, once you make everyone show their work.

Before you act on this

This article is general information about Utah roofs, not an assessment of yours. Every roof is different, and no article can tell you what is actually happening on your specific house. Have a licensed roofing contractor look at it in person before you act on anything here.

More questions about this topic

Should I just throw out the highest and lowest bids and take the middle one?

That shortcut is how passive buyers end up with the worst roofs. The middle number can still describe an incomplete job. The highest can be the only bid that included everything the code requires. Compare scope line by line first. Once the jobs match, the totals finally mean something and the right choice usually gets obvious.

Is the cheapest roofing quote always cutting corners?

Not always. Sometimes a lower bid honestly reflects a smaller scope, a simpler material, or a company with less overhead. The tell is what happens when you ask for specifics: an honest cheap bid can explain exactly what it includes and excludes in writing. A corner-cutting bid stays vague, because vagueness is where the discount lives.

What should a written roofing estimate actually include?

Named materials with manufacturer and product line, the full scope (tear-off, underlayment, ice shield, flashings, ventilation work, deck repair allowance, disposal), the warranty terms on both workmanship and product, and the total price. If any of those is missing, the estimate is not finished. Comparing it against complete bids will mislead you.

One roofer quoted me from the driveway without touching the roof. Is that normal?

It is common, and it is a red flag. A number produced without the roof's history or a look through the attic is pricing a guess. Guesses get corrected later, in change orders. A real assessment happens before a real number. Treat a driveway quote as a rough opening position, never as a comparable bid.

Do roofing bids include the dumpster, cleanup, and nail sweep?

Some do and some quietly don't, which makes the cheap bid cheaper on paper. Disposal, ground protection. A magnetic nail sweep of the yard are real costs, and a complete bid names them. Ask each bidder directly what happens to six thousand pounds of old roofing. That's because it has to go somewhere, on someone's line item.

Related pages

Mattie Tueller

Mattie Tueller

Mattie Tueller is the owner and general manager of Master Roofing in Lindon, Utah. He came up through the trades (flooring, tile, and full renovations under a general contractor who expected everything built right), ran statewide operations as a political director, then spent a year inside a sales-first roofing shop and built Master Roofing as its opposite: in-house crews trained by the owner, a dedicated quality check on every job, ventilation built to code on every bid, and warranties that mean what they say. He serves as an expert witness in roofing litigation.

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