Roof Repair vs. Replacement: Read the Quote Before You Commit

An isolated leak has a location: a pipe boot, a step flashing at a wall, a valley, a few shingles a tree took off. The rest of the field still has granule, the deck is sound in the attic, and you are not chasing a new stain every storm.

A roof at end of life looks different from the attic and from the ground: widespread granule loss, curling, brittle tabs, repeated leaks in new places, daylight through the deck, or insulation that has been wet more than once. Age is part of that picture. It is not the whole picture. A young roof can need a boot. An old roof can still take a targeted repair if you are selling in months and the deck is dry.

The quote should say which of those you are in. “Roof work” is not a diagnosis. If they were on the ladder for a leak over the dining room and the bid is a full tear-off, you need the condition of the rest of the field in writing — not a gesture at the ridge.

If the first sign was a ceiling stain, stop the water and sort plumber vs. roofer vs. both: Ceiling Leak: Stop the Water, Then Decide DIY vs. Plumber.

A common rule of thumb: if the repair cost is heading toward about 30% of a full replacement, replacement often has a better remaining-life story. That rule is a screen. It is not a law, and it is not a reason to skip the actual condition of the roof.

Misuse looks like this:

• Applying 30% to a padded replace number so a modest repair “crosses the line.”
• Counting cosmetic granule loss as damage area without photos of the field.
• Treating one boot and a ridge vent as “multiple failures” to get over the threshold.
• Skipping a repair number entirely and jumping to replace because “at this age we always replace.”

Use the rule only after you have two real numbers: a defined repair, and a defined replacement with tear-off and flashing listed. If you only have the replace bid, you do not have 30% of anything. You have one option.

A replacement quote that is one line — “new roof,” a square count, a total — cannot be compared. Full replace is a stack of jobs.

You want to see:

• Tear-off of the existing layer(s), and how many layers they expect.
• Dump / disposal.
• Underlayment and ice-and-water where the climate and code call for it.
• Field material (and what quality tier, if they sell more than one).
• Flashings: walls, chimneys, skylights, step and kick-out — replace or reuse, named.
• Pipe boots, ridge vent, intake, drip edge.
• Decking: “replace as needed” should say how it is priced (per sheet, included allowance, or time-and-material with a call before extra money).
• Permit.

If decking is “included” with no allowance, ask how many sheets are in the job before it becomes a change order. If flashings are “reused where possible,” ask who decides, and what the add is if they cannot. Those are the lines that move a replace bid after you have already signed.

A complete reroof and a patch are not competing prices. Same as a tank swap vs. a tankless conversion: pick the scope, then compare.

After hail or wind, a lot of paper shows up that is really an insurance process, not a roofing scope. Same-day signatures, “we deal with the carrier,” and a price that exists only if you sign before they leave the driveway are close techniques. They are not findings about your deck.

Insurance may or may not be involved. That is your policy and your carrier. A contractor cannot require you to file, and a door-hanger cannot see the attic. If they did not get in the attic and did not photograph the field, a full-replace storm bid is ahead of the work-up.

Take photos. Get the scope in writing. Sleep on it. The shingles do not need a signature tonight unless the roof is open to weather — and then the job is tarp and dry-in, not a full contract for a system you have not bid twice.

The same-day clock is the same pattern as an AC changeout discount that expires when the truck leaves.

A cheap “reroof” that is an overlay — new shingles on old shingles — can look like a bargain against a tear-off. In many places a second layer is restricted or not allowed. Even where it is allowed, you are nailing through the old field, adding weight, and hiding the deck. The next real roof is a double tear-off.

If the bid does not say tear-off, ask how many layers are up there now and whether the quote is overlay. If it is overlay, get a tear-off price from the same shop or another shop before you call the overlay the market. A low number that skips tear-off is a different product.

A roof that is already two layers is often a tear-off whether the leak is small or not. That is a code and a deck question. It should be on the ticket.

“Get three quotes” is good advice only if the three papers describe the same roof.

Align:

• Tear-off vs. overlay.
• Same squares (and who measured).
• Same flashing and vent plan.
• Decking policy.
• Material tier — not “architectural” as a vibe, the actual product line if they named one.
• Warranty on labor vs. manufacturer material warranty (those are not the same).

If one bid is repair, one is overlay, and one is full tear-off, you have three scopes. Choose the scope with the attic and the field in mind, then compare remaining numbers. A third bid that is far apart on a complete tear-off is useful. A third bid that is far apart because it skipped dump and flashing is not.