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Roof repair vs replace calculator

Type your two quotes, the remaining life a roofer gave you, your leak count and how long you plan to stay. The tool counts five written-down thresholds.

2 of 5 thresholds make the case to replace HyreRoof’s editorial rule, not a surveyed statistic: two or more of the five thresholds make replacement the stronger case. Insurance can decide it separately.

Replacement is the stronger case when two or more of these are true: under 5 years of life left, the repair is 30% or more of a replacement, three or more separate leaks, a 20-year-old covering already leaking, or you will stay longer than the roof has left.

One is a lean. None is not a clean bill of health.

Count the thresholds

Use your own quotes and a roofer’s remaining-life figure. Nothing is stored or emailed.

Leave at 0 until a roofer gives you a figure. Do not guess from age.

The job on the table now, not a lifetime of patches.

From a written bid.

— Planning result
— This repair as a share of replacement
— Thresholds crossed
— Remaining life entered

What this assumed —

Remaining life should come from someone who has inspected the roof. HyreRoof does not inspect roofs.

What each threshold is checking for

ThresholdWhat it detectsWhy it counts
Under 5 years of life leftA repair that buys time you pay for again soonA patch on a roof near the end is a delay, and delay has a price
Repair is 30%+ of a replacementSpending a large share of a new roof to avoid oneAt that share the repair competes with the whole job
Three or more separate leaksA failing covering rather than one defectLeaks in different places point to the roof as a whole
A 20-year covering already leakingAge plus waterWet decking is the expensive outcome this line tries to catch
You stay longer than the roof has leftThat you, not a buyer, pay for the next roofIt turns a comparison into your own cash flow

Each line catches a different problem, so counting them says more than any single ratio.

HyreRoof’s editorial thresholds, not surveyed statistics.

Why counting thresholds beats one percentage

A lot of repair-or-replace advice comes down to one percentage: if the repair costs more than some share of a new roof, replace. We know of no research behind any particular share.

A $900 repair on a roof with eighteen good years is worth making whatever the ratio. A $3,000 repair on a roof curling on every slope is money on something already finished. Those are examples, not prices.

HyreRoof analysis: each threshold here catches a different problem. One is a lean. Two or more make the case for replacing. None means the tool has nothing to add, and you need remaining life from a roofer.

Waiting costs more than it used to

Since 2000, the producer price index for roofing materials has risen 255%, against 87% for consumer prices overall. A replacement put off five years may not cost the same in real terms.

HyreRoof analysis: that is not a reason to replace early. It means a repair bought to delay three or four years buys less than it looks. On a roof with fifteen years left, the delay is long enough that patching can still win.

What a repair says about the rest of the roof

RepairWhat it suggests about the coveringLean
A few shingles blown off in a stormA wind event on a sound roof, unless the seal strips have failed across itRepair
One flashing leak at a chimney or ventA detail failure, not a covering failure. Ask whether the old flashing was reusedRepair, and ask why
A valley leakValleys carry water from two planes. Repairable; check the covering’s ageDepends on age
Granule loss across slopesThe mat is showing through, and sunlight takes it from thereReplace
Curling or cupping across a slopeThe covering is at the end of its lifeReplace
A leak on a covering 20 years or olderAge plus water. The risk is the deckReplace
A soft deck, seen from the attic or reported by a rooferThe sheathing has taken water. It is no longer only a covering decisionGet it inspected

What a given failure suggests beyond its own invoice.

When insurance changes the answer

  • A covered hail or wind loss can pay for replacement

    A roof that could be repaired may still be replaced under a covered loss. That changes the arithmetic.

  • Check replacement cost or actual cash value first

    Actual cash value subtracts depreciation for the roof’s age. On an older roof that gap can be large.

  • Do not repair storm damage before the adjuster sees it

    Make temporary repairs only, and photograph everything first.

  • Filing is not always right

    A claim near your deductible can cost more over time than it pays. That is a judgment about your policy, not something this tool calculates.

What this tool cannot weigh

  • Remaining life: you supply it

    It is the input that moves the result most. Get it from a roofer who has inspected the roof, not from the age of the house.

  • Deck condition

    Hidden until the covering comes off. A wet deck makes a reroof a bigger job whichever way you decide.

  • Whether the repair fixes the cause

    A patch over a detail that was wrong from the start can leak again next to it. Ask what caused it.

  • That waiting is sometimes right

    A small leak on a young roof with a known cause does not need deciding this week.

Before you compare the quotes, read one line on your policy

Whether the roof settles at replacement cost or actual cash value can move more money than the repair-or-replace choice. It is on the declarations page.

The two bases, in the regulators’ words

Actual cash value. The Iowa Insurance Division: “The insurance carrier will pay for the roof’s depreciated value based on the age and condition of the roof before the damage.”

Replacement cost. The same source: “Will pay to repair or replace the roof with materials of similar quality, the cost of labor, permits, and inspections are included, less the policy’s deductible.”

The Texas Department of Insurance, shorter: “Replacement cost coverage pays to repair or replace your house and personal property at current prices.” against “Actual cash value coverage pays replacement cost minus depreciation.”

The endorsement that can change which one you have

The Iowa Insurance Division: “Many homeowners policies now include an endorsement, or rider, specifically related to how settlement for a damaged roof will be addressed.”

A roof endorsement can settle the roof at actual cash value while the rest of the house stays on replacement cost, or apply a schedule by the roof’s age and material. It can arrive at renewal. Look for it by name.

Both bases have exclusions. “For both actual cash value and replacement cost, there may be exclusions for certain types of damage, such as wear and tear, or a limit on the amount of coverage.” A roof wearing out with age is wear and tear.

What to do with this

Find the declarations page. Read the dwelling coverage basis, then look separately for a roof or windstorm endorsement. Your agent can tell you in one call.

Then rerun the calculator. On an actual cash value roof, depreciation comes off any payment, so the older the roof, the more of a replacement you pay yourself. On a replacement-cost roof with a covered loss, the claim may pay for it.

HyreRoof analysis: two policy lines can move more money in a roof claim than the damage does: replacement cost or actual cash value, and a dollar or percentage wind/hail deductible. Both are on the declarations page. Read them before a storm.

HyreRoof holds no dataset of claims, settlements or adjuster decisions, and does not act as a public adjuster or contractor. Nothing here is legal, insurance or engineering advice; your policy language and your state’s regulations are the binding version.

Find the cause before you price the fix

A repair that misses the cause is not cheaper than a replacement. It is a deposit on the same conversation next year.

  1. 1
    Write down where the water appeared, and when

    The exact spot, and the weather before it. Water that shows only in driving rain from one direction points to flashing or a wall joint.

  2. 2
    Note winter-only leaks

    Water that shows after a thaw can be an ice dam or condensation. New shingles fix neither.

  3. 3
    Look in the attic before anyone looks at the roof

    Water runs along rafters before it drips, so the ceiling stain may not sit under the entry point. Photograph the highest stain you can find.

  4. 4
    Ask the bidder to name the mechanism

    “Failed step flashing on the uphill side of the chimney” is a diagnosis. “Roof is old” is not. If two bidders name different causes, get a third opinion before you pay anyone.

  5. 5
    Check the edge and penetration details

    The code’s baseline makes a good checklist: “Flashings shall be installed in a manner that prevents moisture from entering the wall and roof through joints in copings, through moisture permeable materials and at intersections with parapet walls and other penetrations through the roof plane.”

  6. 6
    After a storm, document before repairing

    The Texas Department of Insurance: “Make only temporary repairs to protect your house and belongings. For instance, board up broken windows or put a tarp over a damaged roof. Don’t make permanent repairs.”

  7. 7
    Do not go up to look

    OSHA rules bind employers, not homeowners, but the line still applies. A trained roofer may not work above six feet without fall protection. Look from the ground, a window or the attic, or use a photo or a drone.

The money that is not in either quote yet

Both quotes have blind spots. The last column is what you can do about each before you sign.

Not yet pricedWhich quote it hitsBefore you sign
Deck conditionReplacementAgree a price per sheet in the contract, and ask to see and photograph each sheet before it is replaced. The deck is hidden until tear-off.
An extra existing layerReplacementFind out how many layers are on the deck. Ask the roofer to photograph the cut edge at the eave, or look from the ground. More layers mean more tear-off and disposal.
Code upgrades the permit triggersReplacementAsk the building department what a reroof permit requires locally. Some policies carry ordinance-or-law coverage for this; check yours.
Whether the repair fixes the causeRepairGet the cause named in writing, and ask for a warranty on that detail for a stated period.
MatchingRepairAsk whether new shingles will match. On a weathered roof they may not. That alone is not a reason to replace a sound roof.
VentilationBothSome shingle warranties set ventilation conditions. Check the attic with the ventilation calculator linked below.

HyreRoof analysis. We hold no dataset of bids, invoices or change orders and publish no cost figures of our own.

Four rules of thumb, and where each goes wrong

“If the repair is more than half the replacement, replace”

The two prices buy different things. A repair buys the covering’s remaining years. A replacement buys a new service life. Compare cost per remaining year.

For example, a $1,800 repair on a roof with eight good years left can beat a $14,000 replacement per year, until the eight years turn out to be three. That is why remaining life matters more than either price.

“It is twenty years old, so it is due”

Age alone says little. Installation and ventilation matter too, so two roofs of the same age can be in very different shape.

Replace for a condition, not a birthday: seal failure across a slope, granule loss that keeps coming, repeated separate leaks, daylight or staining on the sheathing.

“Do it now before prices rise again”

Roofing material prices have outpaced general inflation, and we publish that. It is a reason not to compare today’s quote with a price from ten years ago. It is not a reason to replace a sound roof.

Be wary of a deadline: a price that expires this week, a crew “in the area,” a discount for signing today.

“Just put the new one over the old one”

An overlay can be permitted, and it is never neutral. It adds weight, hides what is wrong underneath, and makes the next tear-off bigger. Nails also have to reach far enough into the deck through two layers.

A bidder proposing an overlay should be able to say why the layer below is sound and what your adopted code allows.

What each quote should say

You are comparing two documents built differently. These lines make them comparable.

  • The repair quote names the cause

    What failed, why, and what stops it failing the same way.

  • The repair quote carries a warranty on the work

    A stated period on the detail repaired.

  • The replacement quote prices deck sheets in advance

    Per sheet, agreed before tear-off, with photos.

  • The replacement quote names layers and disposal

    How many layers come off, and where they go.

  • Both quotes cover the same roof

    A porch, extension or dormer at another pitch is a separate plane. Check both quotes include the same ones.

  • A contract that depends on a claim being approved

    It hands your claim to the contractor. Keep the two decisions apart.

  • An offer to absorb your deductible

    Your deductible is yours to pay. An offer to waive or rebate it can misstate the cost to your insurer. Walk away.

  • Most of the money before materials arrive

    A deposit is normal. Most of the contract value up front is a risk you do not need to take.

The third answer: not yet

Repair and replace are not the only choices. A small leak on a young roof with one known cause can take a targeted repair and then nothing for years. A roof with no leak, no seal failure and no granule loss needs nothing, whatever its age.

HyreRoof does not sell or install roofs and takes no referral fee, so this page can say “not yet, and get it inspected in the spring.”

Insurance and contract terms

Actual cash value (ACV)
Replacement cost minus depreciation for the roof’s age and condition.
Replacement cost value (RCV)
What it costs to repair or replace at current prices, less the deductible. Can be paid in two parts, the second after the work is done.
Recoverable depreciation
The amount held back from the first check on a replacement-cost policy and released after completion. Your policy sets the deadline.
Roof endorsement
A policy amendment on how the roof settles. It can change the basis, add an age schedule or a separate deductible.
Wear and tear exclusion
Excludes gradual deterioration on any basis. A roof wearing out is not an insured event.
Overlay
A new covering laid over the old one instead of after a tear-off.
Change order
A priced addition after work starts. Agreeing the deck rate before signing caps one you cannot see coming.
Mitigation
Your duty to prevent further damage after a loss: tarping, boarding, stopping water. Not the same as a permanent repair.

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Questions this calculator answers

Is it cheaper to repair or replace a roof?
A repair costs less today. Replacement can cost less over the years you own the house when remaining life is short or the repair is a large share of a new roof. Type both quotes and the tool counts the thresholds.
How many leaks before I replace?
This tool treats three separate leaks as a system problem rather than a patch job. One leak on a covering 20 years or older also counts, because age plus water is how decks fail.
Where do the 30% and 5-year lines come from?
They are HyreRoof’s editorial thresholds, written down so you can see and disagree with them. We know of no study that sets them.
Does insurance change the answer?
It can. A covered hail or wind loss on a replacement-cost policy can pay for a new roof even where a repair was possible. The physical choice and the claim are separate decisions.
What if I do not know the remaining life?
Leave it at 0 and get the figure from a roofer who has inspected the roof. It moves the result more than any other input, so do not guess it from age.
Does HyreRoof inspect roofs?
No. We do not inspect, repair or replace roofs, and matching with roofers is not live yet.

Sources and methodology

Figures dated September 5, 2026. Last reviewed .

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