Last updated: July 2026 · Written by Cason Curriden, Owner, Olympus Roofing
Quick Answer
To compare roofing quotes in Salt Lake City without overpaying, make every bid apples-to-apples: confirm tear-off vs overlay, underlayment, ice-and-water shield, ventilation, flashing, decking allowance, cleanup, and both manufacturer and workmanship warranties. The cheapest bid is usually missing line items that cost you later. Verify each contractor’s Utah DOPL license and get everything in writing.
Olympus Roofing has written and reviewed roofing estimates across Salt Lake City since 1973. Owner Cason Curriden holds Utah DOPL license #6402827-5501, plus GAF Master Elite and Owens Corning Preferred Contractor certifications, so the guidance here reflects real Utah jobs, not national averages.
How Do You Compare Roofing Quotes in Salt Lake City?
The only fair way to compare roofing quotes is to make them apples-to-apples. Two bids can be thousands of dollars apart simply because one includes tear-off, new underlayment, and flashing while the other quietly leaves them out. Before comparing prices, line up the scope: what each contractor will remove, install, replace, and warranty.
In Olympus Roofing’s records since 1973, the bids homeowners regret are almost never the most expensive — they are the cheapest ones missing critical line items. Start by understanding what a fair number looks like with our roof replacement cost guide, and learn how to vet the company behind the bid in our guide to choosing a roofing contractor. Then request a free estimate that itemizes every component so the comparison is honest.
Why Is the Cheapest Roofing Bid Usually the Most Expensive?
The cheapest bid is usually cheapest because it leaves out work the other bids include. The most common omissions in Salt Lake City are an overlay instead of a full tear-off, no ice-and-water shield at eaves and valleys, no decking replacement allowance, reused flashing, and no upgraded ventilation. Each omission saves the contractor money today and costs you money later.
An overlay roof — new shingles laid over old ones — looks like a bargain but traps heat, hides rotted decking, and often voids manufacturer warranties. Skipping ice-and-water shield invites the eave leaks Utah’s freeze-thaw winters cause. Reused flashing is a future leak at every chimney and valley. When one bid is far below the rest, assume it is missing line items rather than offering a genuine discount, and ask exactly what is included.
What Line Items Should Every Roofing Quote Itemize?
Every legitimate roofing quote should itemize the full scope — not just a single lump sum. Look for the components below in writing. If a bid lists only “tear off and replace roof — $X,” you cannot compare it to anything, and you cannot hold the contractor to a standard later.
| Line Item | Why It Matters | Red Flag If Missing |
|---|---|---|
| Tear-off (vs overlay) | Removing old shingles exposes decking and is the proper standard | Bid quotes an overlay or stays silent on layer removal |
| Decking inspection + replacement allowance | Rotted plywood must be replaced before shingles go on | No per-sheet price for replacement decking |
| Underlayment | Secondary moisture barrier under the shingles | Brand/type not specified, or felt where synthetic is standard |
| Ice-and-water shield | Stops freeze-thaw leaks at eaves and valleys | Not listed for eaves, valleys, and penetrations |
| Flashing replacement | New metal at chimneys, valleys, walls prevents leaks | “Reuse existing flashing” or no mention |
| Attic ventilation | Balanced airflow protects shingles and warranty | No intake/exhaust detail or vent count |
| Cleanup + magnet sweep | Removes nails and debris from your property | No cleanup or nail-sweep line |
| Manufacturer + workmanship warranty | Covers both product and installation | Only one (or neither) warranty named |
| Permit + DOPL license | Legal compliance and accountability | No permit included; license not provided |
Source: Olympus Roofing estimating records, Salt Lake City, 2014–2025; GAF and Owens Corning installation specifications; Utah DOPL licensing requirements.
Tear-Off vs Overlay: Why Does It Change the Price?
Tear-off and overlay are not the same product at a different price — they are different roofs. A tear-off removes all old shingles down to the decking, lets the crew inspect and replace rotted wood, and installs a complete new system. An overlay lays new shingles over the old, which is faster and cheaper but hides problems and adds weight.
Overlays often shorten roof life and can void manufacturer coverage because the new shingles cannot lie flat or breathe properly. GAF and Owens Corning both build their strongest warranties around complete, single-layer installations — see GAF and Owens Corning system requirements. If one Salt Lake City bid is much cheaper, check whether it quotes an overlay. Comparing an overlay price to a tear-off price is the single most common way homeowners get misled. Olympus quotes full tear-offs for residential roof replacement as the standard.
How Do You Verify a Contractor’s License and Certification?
Verify two things before trusting any quote: the contractor’s Utah license and their manufacturer certification. Confirm an active license through the Utah Division of Occupational and Professional Licensing — search the business name or license number at Utah DOPL — and confirm liability and workers’ comp insurance directly with the carrier.
Manufacturer certification is the second layer. GAF Master Elite and Owens Corning Preferred contractors are vetted for licensing, insurance, and installation quality, and only a small share of roofers nationwide qualify. That status also unlocks enhanced warranties a non-certified roofer cannot match. Olympus Roofing holds both certifications, which is why our warranty covers manufacturer materials plus our own labor. A bid from an unlicensed or uncertified roofer is not a real comparison — it is a different, riskier product.
How Many Roofing Quotes Should You Get, and What Goes in Writing?
Get three quotes — enough to spot an outlier without drowning in sales calls. Three bids reveal the realistic price band for your roof; a single bid gives you nothing to measure against, and five or more usually just repeat what three already told you. Compare scope first, then price.
Then get everything in writing before work begins: full scope, materials by brand and type, decking allowance pricing, start and completion dates, payment schedule, cleanup terms, permit responsibility, and both warranties. Never pay the full amount upfront — a reasonable deposit with the balance on completion is standard. A verbal promise is not enforceable, and “we’ll handle that” is not a line item. The written contract is what protects you if anything goes wrong months later.
Frequently Asked Questions
How many roofing quotes should I get?
Get three quotes. Three is enough to establish the realistic price range for your roof and to spot an outlier — either a suspiciously low bid missing line items, or an overpriced one. A single quote gives you nothing to compare against, while gathering five or more usually just repeats what three already showed you. Compare scope before price.
Why is one roofing bid half the price of the others?
A bid that is half the price is almost always missing work the others include — typically an overlay instead of tear-off, no ice-and-water shield, reused flashing, no decking allowance, or no upgraded ventilation. It may also come from an unlicensed roofer skipping permits and insurance. Ask exactly what is included before assuming it is a genuine bargain.
What must be included in a roofing contract in writing?
A roofing contract should put in writing the full scope, materials by brand and type, tear-off vs overlay, decking replacement pricing, underlayment and ice-and-water shield, flashing, ventilation, cleanup, start and completion dates, payment schedule, permit responsibility, and both manufacturer and workmanship warranties. If a promise is not written into the contract, you cannot enforce it later.
Does the lowest roofing bid actually cost more?
Often, yes. The lowest bid usually wins by omitting work — tear-off, ice-and-water shield, decking replacement, or new flashing — that you end up paying for later through leaks, premature failure, or voided warranties. When you add the missing items back, the “cheap” roof frequently costs more than a complete bid would have. Compare scope, not just the bottom-line number.
How do I verify a roofing contractor’s license in Salt Lake City?
Search the contractor’s business name or license number at the Utah Division of Occupational and Professional Licensing (dopl.utah.gov) and confirm the license is active. Then request current liability and workers’ compensation insurance certificates and verify them with the carrier. For added assurance, confirm GAF Master Elite or Owens Corning Preferred certification on the manufacturer’s locator.
What is the difference between tear-off and overlay in a quote?
A tear-off removes all old shingles down to the decking, allows rotted wood to be replaced, and installs a complete new system. An overlay lays new shingles over the old — faster and cheaper, but it hides problems, adds weight, shortens roof life, and can void warranties. Comparing an overlay price to a tear-off price is misleading.
Do I have to choose the lowest roofing quote?
No. The goal is the best value, not the lowest number. Once bids are apples-to-apples on scope, choose the contractor with a verifiable Utah license, manufacturer certification, strong local references, and clear written warranties. A slightly higher bid that includes tear-off, proper flashing, and a workmanship warranty usually costs less over the life of the roof.
What warranties should a roofing quote include?
A complete quote should name two warranties: a manufacturer warranty on the shingles and system (strongest through GAF Master Elite or Owens Corning Preferred installations) and a workmanship warranty on the contractor’s labor. If a bid lists only one — or neither — that is a red flag. Get both warranty terms and their durations in writing.