A roof can reach a point where a repair is still possible but a replacement is the better use of money. Where that point falls depends on the layer that is failing, the size of the area and the age of everything around it. We take repair requests as well as replacements, so ask for whichever you need.
What a repair can fix
A repair works when the failure sits in one spot and the layers around it are healthy. A cracked flashing at a chimney, a few displaced tiles, a split seam or a worn pipe boot are typical. The test is whether the layers beneath are healthy and the repair can be tied into them.
A repair does not work when the underlayment has aged across the whole roof, when the deck is soft in several places or when the covering is brittle. A new piece laid in old material fails at its edge.
Ask us where the water is entering and whether the cause is a part or the system.
A repair also has a place in a replacement plan. If a roof must last another winter before the budget is ready, a targeted repair can bridge the gap. Say so in the request, and the assessment will give both a stopgap and a full scope.
Five checks
One: how old is the covering and the underlayment beneath it. Two: how many places have failed, and are they connected. Three: is the deck dry and sound where it can be inspected. Four: how many layers are on the roof, since only one existing layer may be left under a new covering in County jurisdiction. Five: what do the repairs added up cost against the cost of a new stack.
If the answers are old, many, soft, layered and close, the roof is at the end of its repair life. If they are young, one, dry, single and far, repair is reasonable.
A written assessment records all five, so the choice is made on paper.
The fifty percent lines in Los Angeles
Several rules key on half the roof. Under the state Energy Code, a single-family roof replaced by more than 50 percent must meet the cool roof values, and replacements of half or less are not covered. The City of Los Angeles cool roof ordinance follows the same line.
The City of Los Angeles adds a building rule: re-roof more than half within one year and all of the roof has to meet current code. At half or less, the rule reaches only the replaced part.
The practical effect is that a repair plan can be sized to stay below the line, but a series of repairs within a year can add up across it.
Age, insurance and what to do next
Insurers look at roof age. In a 26 May 2026 report, Insurance Business America said Mercury and Wawanesa usually refuse a house whose roof is past 25 years, except tile and slate, and said Farmers can pay only actual cash value on an asphalt roof older than 15 years. Repairing an old roof may not change how the insurer sees it.
We do not handle claims, and we cannot say what your policy covers. Read it, and ask your insurer.
If you are unsure, request an assessment. It covers repair and replacement, and you decide after reading it.
Repair or replace questions
Will insurance cover a 20 year old roof in California?
That turns on your insurer and your policy. Some limit coverage on older roofs, as reported on 26 May 2026: Farmers can limit asphalt roofs over fifteen years to actual cash value. Read your policy and ask your insurer. We do not handle claims.
What is the 25% rule in roofing?
Los Angeles rules turn on half the roof, not a quarter. Ask your building department which figure your permit uses.
Which fifty percent thresholds does LA code actually use?
The state Energy Code and the City cool roof ordinance both turn on replacing more than half the roof. In the City of Los Angeles, once more than half is re-roofed within a year, all of the roof must meet current code.