What to Expect When a Roofer Shows Up for an Estimate (And the Five Questions to Ask)

A roof estimate should take 45 minutes minimum, not 5. The short ones are almost never the thorough ones — and the difference between a 10-minute visit and a proper inspection often shows up two years later as a leak you paid twice to fix.

Here is what a legitimate estimate visit looks like, the red flags that tell you to move on, and the five questions that separate a contractor who knows roofing from one who knows sales.

What a thorough estimate actually looks like

A well-run estimate visit has four distinct phases. If a contractor skips any of them, they are not bidding the same job the thorough ones are bidding.

Outside walkaround — about 20 minutes. Before anyone touches a ladder, the roofer should walk the perimeter of the house. They are measuring pitch and square footage (this affects both material quantities and labor rates), identifying the current roofing material, and eyeballing the visible flashing at chimneys, skylights, and walls. Gutters and fascia get a look too — rotted fascia means the drip edge installation will cost more, and clogged gutters are a clue about drainage patterns. A contractor who skips this part and goes straight to the ladder is working from assumptions.

On-roof inspection — about 15 minutes. A roofer who will not get on the roof is guessing. Full stop. They need to be walking the surface to check granule loss (which tells you how much life is left in the shingles), shingle curl and cupping, nail pops, and soft spots that suggest decking damage beneath. None of those conditions are visible from a driveway or a drone photo. If they hand you a number without setting foot on the surface, that number is not based on your roof.

Attic inspection — 10 to 15 minutes. This is the step most homeowners do not expect, and the one that most contractors skip. A proper ventilation assessment cannot happen from the outside. The roofer needs to be in the attic to check the condition of the decking from below, assess whether ventilation is adequate, note the insulation depth and placement, look for moisture stains, and check for daylight coming through the deck. Inadequate attic ventilation is one of the leading causes of premature roof failure — shingles cook from below and void manufacturer warranties. A contractor who skips the attic cannot quote ventilation work, cannot assess decking honestly, and is handing you an incomplete bid.

Post-inspection conversation — about 15 minutes. Before they leave, a good contractor sits down and tells you what they found. Not a pitch — a report. Here is what the roof looks like, here is what the quote will include, here is what I would do if this were my own house. If they walk out the door and say "I'll email you something," the debrief did not happen. The conversation is where you learn whether they actually inspected anything.

Red flags during the visit

Most of these are fast tells. You will know within the first 20 minutes whether the visit is going well.

• Estimate in under 20 minutes. They are pricing based on square footage and a rough material guess. They have not looked at your flashing, your fascia, your ventilation, or your decking. That speed will show up somewhere in the work.
• No ladder. They are not looking at your roof. An aerial measurement service can tell you square footage; it cannot tell you what is wrong with the surface. If they never went up, they do not know.
• No attic. They cannot quote ventilation or decking without going in. If they skip it, that scope is not in the bid — and it may be in the change orders.
• "I can do this today if you sign right now." Pressure closing on the first visit is a storm-chaser tell. A legitimate contractor knows you are getting two or three more bids. They are not afraid of that comparison because their scope can stand up to it.
• "I'll waive your deductible." That is insurance fraud in all 50 states. It is not a discount or a courtesy — it is a contractor inflating the claim to cover a cost the homeowner was supposed to pay. A contractor willing to commit fraud on the first visit is not someone you want on your roof.

The five questions to ask every roofer

Ask these on every visit, take notes, and compare the answers side by side. The consistency and specificity of the responses will tell you more than the price.

1. What brand and product line will you use, and what's the wind and impact rating?

This question matters because "architectural shingles" is not a specification. Two bids that both say "architectural shingles" may be describing products that differ by $40 per square in material cost and 30 mph in wind resistance. A good answer names the manufacturer, the product line, the warranty class, and the wind and impact ratings — for example, a Class 4 impact-rated shingle in a hail-prone region can meaningfully reduce homeowner insurance premiums. A bad answer is vague about brand, or the contractor does not know the ratings off the top of their head. That specificity gap is worth noting.

2. Are you tearing off or going over the existing roof?

Most building codes permit one layer of shingles over an existing layer. Two layers is often the code maximum. Going over saves on tear-off labor and disposal costs, but it traps the existing problems underneath — moisture damage, bad decking, inadequate ventilation. A good answer explains the trade-off and gives you a recommendation with reasoning. A bad answer defaults to going over without examining the existing layer, or does not acknowledge that tear-off is often the better long-term call. If the existing roof has moisture damage or cupped shingles, going over it is not a real repair.

3. Will you assess and quote the attic ventilation as part of the scope?

This is a qualifying question as much as a planning question. If the contractor skipped the attic, they cannot answer it. A good answer is yes, explains what they found or what they will look for, and notes that most shingle warranties require balanced intake and exhaust ventilation to remain valid. A bad answer is a blank look, a "we'll check it," or a confirmation that they did not go in the attic. Ventilation is not optional on a quality job — it is the difference between a 15-year roof and a 25-year roof on the same materials.

4. How are decking replacements priced, and what's the allowance in the bid?

Rotten or damaged decking is almost always a discovery item — you do not know the full extent until the old shingles come off. A good answer tells you exactly how replacement decking is priced (typically per sheet of OSB or plywood), how many sheets are included as an allowance in the base bid, and what the per-sheet rate is if the job goes over. A bad answer is a flat bid with no decking line item and no explanation of how overages are handled. That omission means any decking work becomes a surprise charge midway through the job, and you have no baseline to push back against.

5. What's your workmanship warranty, and how does it interact with the manufacturer warranty?

Manufacturer warranties cover materials. Workmanship warranties cover installation. You need both, and they interact. Most manufacturer warranties require the shingles to be installed by a credentialed contractor to be valid — if the roofer is not certified by the manufacturer, you may have a materials warranty that is functionally unenforceable. A good answer specifies the length of the workmanship warranty (five years is baseline; some quality contractors offer 10 or 25), confirms their manufacturer certification status, and explains what the combined coverage actually looks like. A bad answer conflates the two or cannot explain the distinction.

What to have ready before they arrive

• Access to the attic. Move whatever is blocking the access panel. A contractor who cannot get in the attic will not inspect it, even if they would otherwise.
• Pets secured. A roofer moving ladders and walking perimeters does not need a dog loose in the yard.
• Insurance claim paperwork, if this visit is storm-related. If an adjuster has already been out, have those notes available.
• Your existing roof's age, if you know it. Even a rough ballpark — "we bought the house in 2014 and it looked original" — helps the contractor calibrate what they are likely to find.
• A notepad. Write down product names, model numbers, and warranty terms on the spot. You will not remember them later when you are comparing three bids.

After they leave

Ask for the written estimate within 24 to 48 hours. A contractor who cannot produce a written, itemized estimate within two days is not organized enough to run your job. No written estimate is no real estimate — a verbal number is not a commitment and is not comparable to anything.

When the estimates come in, compare them line by line against the other bids. If one is $3,000 cheaper and vaguer on scope, you are looking at what they left out. Cheaper bids that omit decking allowances, ventilation work, or specific product lines are not actually cheaper — they are estimates that will grow once the job starts or quietly deliver less than the others quoted.

Check the state license board online before you sign anything. All 50 states publish contractor license status publicly, and the lookup takes 30 seconds. An unlicensed roofer means no bond, no insurance obligation, and no recourse if something goes wrong. This is a fast, free verification that most homeowners skip.

A good estimate visit should leave you better informed, not sold. If you got talked to but not taught, the quote probably is not the one.