Roof Leak Repair in Portland: What to Do First
Contain the water inside, note where and when it shows up, and get a roofer to trace it. The entry point is usually uphill of the stain.
What you may notice
A brown ring or a damp patch on a ceiling, often after a long or windy rain
Dripping at a light fixture, a bath fan or a skylight well
Wet or matted insulation in the attic, or a dark trail on the underside of the roof deck
Paint bubbling on a wall directly below the roofline
A stain that grows only when the wind drives rain from one direction
How soon it needs attention
An active drip needs attention now inside the house and a roofer soon. Wet insulation and sheathing do not dry out on their own in a Portland winter, and wood that stays wet goes soft. A single old stain that has not grown through several storms can wait for a scheduled visit, but have it looked at before the next wet season.
Roof leak repair in Portland starts with finding the source
Roof leak repair is mostly detective work. Portland’s leaks tend to announce themselves in the first heavy rains of fall, when a joint that stayed dry all summer gets hours of steady water. The repair itself is often small. Finding the right spot is the job.
Before a roofer arrives, write down:
- which room, and how far the stain is from the nearest outside wall
- whether it shows in every rain or only in wind-driven rain
- what is on the roof above and uphill of it: a vent pipe, chimney, skylight, valley or a wall
- roughly how old the roof is, if you know
Is it a leak or condensation?
A leak makes a spot. Condensation makes a zone: damp sheathing across a wide area, rusty nail tips, and frost or drips in cold, clear weather with no rain at all. That comes from house air reaching a cold attic, often through a bath fan that ends in the attic. It needs air sealing and ventilation, and a roofer can tell the two apart from inside the attic.
Who fixes it?
A leak on a pitched roof is roof repair. If the stain is beside a chimney, see chimney flashing leaks; if shingles came off in wind, see missing shingles. A leak under a low-slope section is flat roofing work. When leaks keep appearing in new places, compare the repair with a replacement and check the published costs for both.
What causes it
Water rarely comes through the middle of a sound shingle. Most leaks start where the roof is interrupted: a plumbing vent, a chimney, a skylight, a valley or a wall. The stain inside is often several feet from where the water gets in, because it runs along the deck or a rafter first.
A cracked rubber boot around a plumbing vent
Step flashing or counterflashing that has come loose at a chimney, wall or dormer
A skylight whose flashing or seal has aged
A valley packed with needles and leaves, so water backs up under the shingles
Shingles lifted, creased or torn off by wind
Nails that have backed out and lifted the shingle above them
On low-slope roofs, an open seam or a blocked drain
Services that fix it
Request a Roofing Quote
Tell us about your roof and we pass your request to a local, CCB-licensed roofing contractor who can quote the work.
Common questions
What should I do right now if my roof is leaking?
Put a bucket under the drip and move or cover what is below it. If the ceiling is bulging with water, keep clear of it. Stay away from wet light fixtures and switch off that circuit if you can do so safely. Do not go onto a wet roof. Then take photos of the stain and note the weather, which helps a roofer find the source.
How much does it cost to fix a roof leak?
The cost page lists a published national range for leak repair with its source and date. A single pipe boot or a short run of flashing sits low in it; a repair that includes wet decking sits high.
Why is the stain not under the damage?
Water that gets through the roofing runs along the deck, a rafter or a pipe until something stops it, then drips. On a sloped roof the entry point is usually higher up than the stain.
Can a roof leak be fixed in winter?
Usually. A roofer can patch or cover the spot in a break in the rain and return for a permanent repair if the materials need a dry roof to bond.
Does a leak mean I need a new roof?
Not by itself. One leak at a vent or a chimney on a roof that is otherwise in good shape is a repair. Leaks in several places, or on a roof with curling and bald shingles, point toward replacement.
Request a Roofing Quote
Tell us about your roof and we pass your request to a local, CCB-licensed roofing contractor who can quote the work.