Does your roof need repairing, or replacing?
The most expensive question in roofing, and the one most likely to be answered by whoever profits from the answer.
There is a version of this trade where every leak becomes a replacement quote, because a replacement is worth twenty times what the repair is. That is worth knowing before you accept anyone's answer — including ours.
The honest position is that it depends, and that it depends on things which can only be established by getting on the roof. What follows is the actual reasoning, so you can weigh someone else's recommendation against it.
They were the only folks to actually touch the shingles and look closely at the project while I was getting quotes. Everyone else just looked from the street.
Eight things that decide it
No single one settles the question. It is how they stack up together.
Age of the roof
An architectural asphalt roof in this climate generally has a service life somewhere in the twenty to thirty year range, depending on ventilation, sun exposure and how well it was installed. Under fifteen years, a leak is usually a specific failure worth repairing. Past twenty-five, money spent on repairs starts to be money spent twice.
How much of it has failed
One damaged area on an otherwise sound roof is a repair. Granule loss, curling and cracking spread across whole slopes is the roof itself wearing out, and patching part of it does not change what the rest is doing.
Where the leak is
Leaks at flashing, valleys and vent penetrations are usually repairable regardless of the roof's age, because they are a detail failing rather than the field. Leaks in the open field of the shingles are a worse sign.
How many times it has been repaired
A roof that has been patched in three or four different places over a few years is not having bad luck. Each repair is buying less time than the one before, and at some point the sensible arithmetic changes.
Condition of the decking
Soft, spongy or delaminated decking means water has been getting in for a long time. That has to be dealt with properly, and it usually cannot be done under an existing roof.
How many layers are already on
Pennsylvania allows two layers of asphalt shingle. If there are already two, the next roof means a full tear-off, which changes the cost of doing anything at all.
How long you plan to be there
This is a legitimate part of the decision and it rarely gets asked. If you are selling in two years, a sound repair and a disclosed roof age may be exactly right. If this is where you are staying, buying five more years on a worn-out roof is usually false economy.
Ventilation
A roof with no intake ventilation cooks itself from underneath and fails early no matter what is on it. If that is what has been happening, replacing the shingles without fixing the ventilation just restarts the same clock.
Where it usually lands
Usually a repair
A roof under fifteen years old with a specific, locatable failure — flashing, a vent boot, a valley, storm damage in one area. The rest of the roof still has life in it, and there is no sense replacing what is working.
Usually a replacement
A roof past twenty-five with granule loss and curling across whole slopes, or one that has been patched in several different places, or one with soft decking underneath. At that point repairs are rent, not a fix.
Genuinely a judgement call
The middle ground — a fifteen-to-twenty-year-old roof with one real problem. This is where how long you are staying, and whether the ventilation was ever right, does the deciding.
If somebody has already told you that you need a new roof
Get another look at it. A Delaware County homeowner was quoted $22,000 for a replacement in May 2026; an independent inspection found the roof had years left and needed about $500 of vent boot and flashing work.
Have James take a look
No charge, no presentation, and a straight answer about which of the two you are actually looking at.
Roof leaking right now? Call (215) 837-9135 — the phone is faster than a form.