Independent asphalt-shingle cost research for reading a roof estimate before signing it.
About Dayton Roofing Guide and Reid Callahan
About Reid Callahan
Reid Callahan is a roofing cost researcher who writes about asphalt-shingle roof replacement: what it costs, why the price moves with pitch, layers, material grade and season, and how to choose a contractor and handle an insurance claim without being taken advantage of. He works from published pricing data, manufacturer warranty documents, building-code and consumer-protection guidance, and homeowner reports.
He is not a roofer, an adjuster, an inspector or a contractor, and he does not sell roofing. Dayton Roofing Guide does not install, repair or inspect roofs. Its job is narrower: show where a number came from, identify what it includes and give a homeowner a consistent way to compare written proposals.
The main Dayton roof replacement cost guide shows that method in practice. Six published Dayton cost sources disagree by roughly threefold, so the guide keeps their dates and scopes visible instead of averaging them into one persuasive but unsupported number.
How a cost guide is built
Find dated local figures
The research begins with Dayton contractor publications, third-party estimates, fixed-price pages and candid homeowner reports. Each figure keeps its publisher and date.
Separate unlike scopes
Unit rates, whole-roof ranges and homeowner quotes do not answer the same question. Roof area is kept separate from house floor area, and a source that does not identify shingle grade is not made to do so.
Show the arithmetic
When a published per-square-foot figure is applied to a sample size, the multiplication is stated and labeled as an example. A calculated example is never presented as a contractor quote.
Check rules at the source
Insurance, licensing, permit and code claims are checked against public agencies or primary documents when available. Popular claims are corrected plainly; the Florida 25% rule, for example, is not presented as Ohio law.
Revisit and correct
Prices, policies and product documents change. Guides carry a real review date, preserve source attribution and are corrected when better evidence changes a statement.
Source policy
Public agencies first
Government code, permit, licensing and consumer materials take priority for rules. A contractor's summary can raise a question, but it does not become the authority for law or insurance regulation.
Manufacturers for products
Warranty, certification and installation claims are checked against manufacturer documents. A warranty term is not quietly converted into a promised service life.
Cost publishers stay labeled
Contractor, aggregator and retailer figures can be useful market evidence. They remain attributed so readers can see who published the number and whether the scope is complete.
Homeowner reports have limits
Forums can reveal real quote experiences and sales tactics. Reports with unknown size, product or scope are treated as reports—not a universal Dayton price.
How this site is funded
Dayton Roofing Guide may receive compensation when a reader uses a quote-comparison link. That relationship does not change the figures selected, turn an estimate into a verified price or determine the editorial conclusion.
The guide does not rank contractors or promise that a provider will be available. Readers should verify any company through the documents and question sequence in How to choose a Dayton roofer, and keep construction estimates separate from coverage decisions using Ohio roof insurance claims.
Corrections and contact
Accuracy depends on traceable evidence. To report a disputed figure, source description, date, code statement or broken citation, email hello@daytonroofingguide.com with the page, the passage and a source that can be checked. Material corrections are reviewed against the original evidence and updated with a current date.
For concise answers before requesting estimates, use Roof replacement FAQ. A correction request is not a channel for obtaining a roof quote, insurance interpretation or contractor recommendation.
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