A roofer stands in your driveway and says the whole roof has to go. The quote is $13,000. A second roofer looks at the same roof and says he can fix it for $700. One of them is wrong, and picking wrong costs you real money either way.
Here is the part nobody says out loud. A replacement pays a roofing company far more than a repair, so the advice you get is not always neutral. We are a roof repair crew in Katy, and we make this call on inspections every week. Sometimes the answer is a small repair. Sometimes the honest answer is that the roof is done.
This guide gives you the same four tests we use, the real cost of both paths in the Katy area, and the exact questions to ask when a roofer pushes hard for a new roof.
The four tests
Run these in order. A roof that fails one test badly usually settles the debate on its own.
Test 1: Age
Most shingle roofs in Texas last 20 to 25 years, and our heat and hail tend to pull that number down, not up. If your roof is under 12 to 15 years old and the damage is in one area, repair almost always wins. The roof has a decade or more of life left, and a sound repair protects all of it. Past 20 years, the math flips. Shingles lose their grit, turn brittle, and stop sealing flat. A repair still stops the leak in front of you, but it buys months instead of years.
Test 2: Damage share
Look at how much of the roof is hurt, not just how bad one spot looks. Damage on one slope, around one chimney, or in one valley is a repair. Damage showing up on every slope is a different roof and a different answer. Then there is the Texas 25% rule. If a repair touches more than 25% of the roof within a 12 month period, the worked area has to meet current code, and that often forces replacement of the whole section. Any roofer who quotes you a replacement should be able to state the damaged share as a plain number and show you where it came from.
Test 3: Repair history
One repair in ten years means nothing. Every roof needs a fix now and then. Three leaks in two years means the roof is failing as a system, and each new fix is chasing the last one. Pull out what you have spent on roof repairs in the last five years. If the total is climbing toward what a major repair costs, and the roof is also old, you are no longer maintaining a roof. You are funding a slow replacement at repair prices, and you still end up buying the new roof at the end.
Test 4: Decking
Shingles are only the skin. Under them sits wood decking, and decking is what a repair actually anchors to. Sound decking holds nails tight and lets a repair last for years. Soft or rotted decking tells a longer story: water has been getting in for a long time, usually far longer than the ceiling stain suggests. A small patch of rot found during a repair can be cut out and replaced. Wide areas of soft decking mean the base of the roof is failing, and repairs laid on top of it will not hold.
The cost comparison
Numbers settle arguments. Here is what each path costs in the Katy area in 2026. For the repair side broken down job by job, see our Texas roof repair cost guide.
| Option | Typical cost |
|---|---|
| Typical repair, one visit | $150 to $1,500 |
| Major repair (big section, decking work) | $1,200 to $5,000 |
| Full roof replacement in Katy | $8,500 to $22,000+ |
Case one. A healthy 10 year old roof in Cinco Ranch loses a patch of shingles in a storm. The repair quote is $900. The replacement quote is $12,000. The repair wins, and it is not close. That roof has 10 to 15 years of life left, and the $900 fix protects all of it. Spending $12,000 there buys you a new version of a roof that was not worn out.
Case two. A 22 year old roof in Seven Meadows has been patched again and again. Each round ran about $2,000 once the decking and ceiling work got counted, and a new leak shows up every year or two. That roof has eaten thousands in repairs and still needs replacing. Every dollar spent on the next patch is a dollar spent on a roof with almost no life left. Replacement wins, and it should have won two patches ago.
When the four tests point to a new roof, our roof replacement page lays out how that work is scoped and priced in Katy, so you can compare any quote against it.
When repair is the right call
The damage sits in one area. One slope, one valley, one chimney, one vent. Local damage on a healthy roof is what repair exists for.
The roof is under 15 years old. A younger roof has the years left to make a repair pay off many times over.
This is the first or second repair. A roof with a clean history and one new problem is a roof with a problem, not a failing roof.
The decking is sound. Firm wood under the damaged area means the repair will hold the way it should.
The shingles still have grit and lie flat. If the surface around the damage looks much like the damage free areas, the roof has life left in it.
If repair wins, protect the win. A roof tune up from $199 reseals the vent boots and flashing that cause most leaks, and it pushes the next repair years down the road.
When replacement is the right call
The roof is past 20 years and leaking in more than one place. Age plus leaks in several spots means the system is at the end, not unlucky.
The damage passes the 25% mark. At that point Texas code pushes the worked area to current standards, and replacing the section is usually the only clean path.
The decking is soft across wide areas. A new surface on a rotten base fails fast, no matter who installs it.
Shingles are curling, cracking, or shedding grit everywhere. When the wear is uniform across the whole roof, no spot repair fixes the real problem.
Repairs keep stacking up. If you are calling a roofer every year, the roof has already given you its answer.
If your roof hits two or more of those, read our roof replacement guide for Katy before you sign anything, so you know what a fair scope and a fair price look like.
Questions to ask a roofer who pushes replacement
Show me photos of every slope. A roofer who wants to replace your roof should have walked all of it, not just the slope over the leak. Ask to see the whole roof, slope by slope.
What share of the roof is damaged? Make them give you a number and tie it to the 25% rule. Vague words like widespread are not a measurement.
What does the decking look like? Ask for photos of the wood, not only the shingles. The decking test settles more arguments than any other.
What would a repair cost, in writing? A company that will not price the repair does not want you to compare the two paths. That tells you plenty on its own.
Our stance is simple, and it is the same one we print on our homepage. If a $400 repair fixes your roof, we will tell you that, even though a replacement pays us far more. Katy roof repair is the core of our business, and it only works if homeowners trust the call we make. When replacement truly is the answer, we show you the photos and the numbers and let them make the case.
Call (281) 677-8586
Repair or replace questions
How do I know if my roof needs repair or replacement?
Run the four tests. A roof under 15 years old with damage in one area, a clean repair history, and sound decking needs a repair. A roof past 20 years with damage on several slopes, repeat leaks, or soft decking needs replacement. Age and damage share settle most cases before the other two tests even matter.
What is the 25% rule for roofing?
If repairs touch more than 25% of a roof within 12 months, Texas code requires the worked area to meet current code, which often means replacing that section. It is the rule that turns some large repairs into partial replacements, and any roofer quoting replacement should show you the damage share in numbers.
Is it better to patch a roof or replace it?
Patching is better when the roof is young and the damage is local. A patch on a healthy roof is money well spent. A patch on a worn out roof is a delay, not a fix, and the money is usually better saved toward the replacement the roof needs anyway.
Is $30,000 too much for a roof?
For most Katy homes, yes. A full replacement here runs $8,500 to $22,000 and up, based on size and material. A $30,000 quote only starts to make sense on a very large, very steep, or tile roof. Whatever the number, get the full scope in writing and a second quote before you sign.
How much does repair cost compared to replacement in Katy?
A typical repair runs $150 to $1,500 one time. A major repair with decking work runs $1,200 to $5,000. A full replacement runs $8,500 to $22,000 and up. Most repair quotes land at a small fraction of a replacement, which is why the repair first test matters so much on a roof with years left.
Can I just keep repairing an old roof?
You can, but the math turns against you. Past 20 years, each repair buys less time than the one before it, and the yearly cost of staying in the roof climbs past what a new roof costs per year of life. Keep repairing while the four tests say repair. Stop when they stop saying it.
Call (281) 677-8586
Lines open 7 AM to 9 PM.
Want the four tests run on your roof? Book a free roof inspection in Katy and we will check the age and wear, the damage share, and the decking, then tell you plainly which side of the line your roof falls on.