The report arrives as a PDF, usually on a Tuesday afternoon, usually eleven to thirty pages. There are photographs of granule loss shot from three feet away, a diagram with the north slope shaded, a line about "active deterioration at the field," and then a recommendation for full replacement with a number next to it. The person who wrote it has left. The number is large enough that you will want to think about it for a week, and in that week you will be reading the document alone at your kitchen table with no one to ask what "nail pops throughout" means in practice.
That week is more workable than it feels, because a roof survey is not a private document between you and one contractor. Several other people handle roofs for a living in your county, and most of them will talk to a homeowner on the phone for ten minutes. Knowing which one answers which question is most of the skill.
Separate the condition findings from the scope of work
Every roof survey mixes two different kinds of writing, and reading them as one thing is where homeowners lose their footing. The first kind is observation: what the inspector saw, where, and how they know. Curled tabs on the west elevation. Exposed fasteners at the furnace stack. Decking that felt soft underfoot near the valley. These are checkable claims, and they should be tied to a photograph you can locate on your own house.
The second kind is a proposal. Tear off to the deck, install synthetic underlayment, replace step flashing at the chimney, new ridge vent, haul-off included. This is a scope, and scopes are opinions about the right response. Two competent roofers can look at the same soft valley and disagree on whether it means four sheets of plywood or the whole north plane.
Go through the PDF with a pen and mark each paragraph O or S. When you are done, check whether every S has an O behind it. A line item for a full deck replacement with no photograph of failed decking is not necessarily wrong, but it is the first thing to ask about. Inspectors who walk roofs all week are used to being asked, and the honest answer is sometimes "I could not see it from where I was standing." Fall protection rules from the Occupational Safety and Health Administration govern how and when a crew gets on a steep or high roof at all, which is a real reason a report leans on drone imagery or a ladder view from the eave rather than a full walk.
The permit desk knows your roof's history and will tell you
In Franklin County and the townships around it, residential reroofing generally leaves a paper trail: a permit application, a contractor name, a date, sometimes an inspection result. A clerk at a municipal building department is not allowed to evaluate your survey, and will not try. What they can do is look up the address and tell you whether a roofing permit was pulled in 2009, who pulled it, and whether it was ever closed out.
That one call changes how you read the report. If the survey says "approximately 18 to 20 years of age, second layer present" and the permit record shows a tear-off in 2011, someone's estimate of age is off by a decade, and the difference between a nineteen-year-old roof and a fourteen-year-old roof is the difference between replacement and repair. If there is no permit at all on a roof that was clearly redone, you have learned something about the previous work that matters more than any photograph of granule loss.
Ask the clerk two follow-ups while you have them. What does the current code require for ice barrier and underlayment on a reroof here, and does a tear-off in this jurisdiction need a final inspection. Those answers tell you which line items on the scope are the contractor's preference and which ones the inspector will be looking for on the day.
Four readers, four different stakes
The people whose work sits next to your decision each see a slice of it, and each slice is useful for something different.
- The municipal inspector. Cares whether the finished assembly meets code. Will not comment on price and should not be asked to. Useful for: what has to be in the scope regardless of who does the job.
- Your insurance adjuster. Cares whether the damage came from a covered event on a specific date. Storm damage and wear are different categories in a policy, and a survey that says "consistent with hail impact" is making a claim with money attached. Useful for: whether this is a claim at all, and what documentation the carrier will want before anyone starts.
- The supply house counter. Distributors in Columbus sell the same shingles to every crew in town. They will not quote your job, but they will confirm whether the product named in your scope actually exists in the color specified, whether it is a builder-grade or architectural line, and roughly what lead time looks like in September. Useful for: catching a scope that specifies a discontinued or downgraded material.
- The manufacturer's warranty department. Cares about installation detail. A phone rep can tell you what their system warranty requires: starter course, ventilation ratio, approved underlayment, certified installer status. Useful for: knowing whether the warranty you were promised is one this scope would actually earn.
How the week usually goes
Practically, the sequence that works is boring. Monday you mark up the PDF and write down five questions. Tuesday you call the permit desk, which takes eleven minutes and is free. Wednesday you email the original inspector your five questions in writing, because a written answer is worth more later than a phone conversation you half remember. Thursday you get a second opinion.
The second opinion is the part homeowners skip, and it is the cheapest leverage available. Ask for it as a review, not a bid: send the photographs and the scope and ask a second outfit whether they read the same roof the same way. A local roofing company in columbus ohio that does fifteen to twenty tear-offs a month has seen every neighborhood's shingle vintage and will usually say plainly whether a 1990s ranch in Clintonville with two layers is a repair candidate or not. If both reports land in the same place on condition and differ only on scope, you are no longer deciding whether to spend the money. You are deciding how.
Friday you compare the two documents line by line, in the same units. Squares against squares, underlayment against underlayment, flashing against flashing. Where the numbers diverge, ask each one why, and take the explanation seriously rather than the total.
A survey read alone in one sitting feels like a verdict. Read across a week with four phone calls behind it, it turns back into what it is: one qualified person's account of a roof, checkable against a permit record, a policy, a product catalog, and a second set of eyes. The roof does not change in that week. What you know about it does.