Most roofs with one problem need a repair, not a new roof. A localized leak, a few blown-off shingles or one failed piece of flashing on a roof with plenty of life left is a repair. Widespread wear, repeated leaks or a roof at the end of its expected life usually points to replacement.
When does a repair make sense?
- The damage is in one area: a few blown-off shingles, a single leak at a vent or chimney, one bad valley.
- The rest of the roof still has plenty of life (see How long a roof lasts in Central Texas).
- Matching shingles are still available, or the patch is somewhere you won’t mind a slight color difference.
Many leaks come from flashing (the metal at chimneys, walls, skylights and vents) rather than the shingles. Replacing failed flashing is a repair, not a reason for a new roof.
When is it time to replace the roof?
- Wear is everywhere: curling or cracked shingles, bare spots, heavy granules in the gutters.
- You’ve had leaks in more than one spot, or the same spot keeps coming back after repairs.
- The roof is at or past its expected life for its material.
- The decking underneath is soft or sagging.
- You’re about to sell, and inspectors or buyers are already asking about the roof.
How old is too old?
InterNACHI’s life expectancy chart gives typical lifespans of about 20 years for 3-tab asphalt shingles, 30 years for architectural asphalt, 40 to 80 years for metal, and 100 years or more for clay or concrete tile. Heat, hail and how well the roof was installed and vented all move those numbers. A roof well short of its expected life is usually worth repairing; one past it usually isn’t.
How to decide, step by step
- Get the problem diagnosed. Have a roofer find where the water or damage actually comes from, not just where it shows.
- Ask for the remaining life of the rest of the roof, and how they judged it.
- Get both prices. Ask for a repair price and a replacement price in writing, so you can compare.
- Check insurance first if a storm caused it. Whether a claim pays for a repair or a replacement depends on the damage and your policy.
- Weigh how long you’ll stay. A repair that buys three years may be fine if you’re selling in two.
What do repairs and replacements cost in Austin?
Our draft Austin estimates, dated October 1, 2026, put most roof repairs at $450 to $3,500 and leak repairs at $300 to $1,200. A full asphalt shingle replacement runs about $5 to $8 per square foot of roof installed. These come from public cost guides, not quotes. See What does a roof replacement cost in Austin? for the details behind them.
Is there a “25% rule”?
Homeowners searching this often run into a “25% rule”: that if more than a quarter of a roof needs repair, the whole roof has to be replaced. Some building codes outside Texas have a rule like this, and some insurers use their own thresholds. Ask your roofer and your insurer what applies to your house rather than assuming it does.
If it’s storm damage
Call your insurer first if a storm caused it. Insurance pays for storm damage, not for a roof that’s simply worn out, and how much it pays on an older roof depends on your coverage. See Will insurance cover an older roof in Texas?.
Common questions
Is it cheaper to repair or replace a roof?
A repair almost always costs less up front. Our draft Austin estimates (October 1, 2026) put most repairs at $450 to $3,500, against roughly $5 to $8 per square foot for a new asphalt roof. Repeated repairs on a worn-out roof can add up, though, so compare against the roof's remaining life.
How do I know if my roof needs to be replaced?
Look for wear across the whole roof: curling or cracked shingles, bare spots, heavy granules in the gutters, leaks in more than one spot, or soft decking. A roof at or past its expected life (about 20 years for 3-tab shingles, 30 for architectural) is also a candidate.
Can you replace just part of a roof?
Yes, roofers often replace a section, such as one slope or a damaged valley. The catch is matching: older shingles may be discontinued or weathered to a different color. Ask the roofer whether they can match yours and how a partial replacement affects any warranty.
Will insurance pay to replace my roof instead of repairing it?
It depends on the damage and your policy. Insurance pays for storm damage, not wear, and the adjuster decides whether the damage calls for a repair or a replacement. Report storm damage to your insurer first and ask what they need.
What should I ask a roofer before deciding to repair or replace?
Ask what the remaining life of the rest of the roof is and how they judged it; the realistic chance you'll replace within a few years anyway; whether they can match your shingles; and whether a repair affects any manufacturer warranty. Get both prices in writing.