Start here
The attic
with a flashlight, during or right after rain
Then look
Uphill
water runs down the decking before it drips
Usual suspects
Penetrations
vent boots, flashing, valleys, chimneys
Do this from inside the house. Falls are the leading cause of death in construction, according to OSHA; leave the roof itself to someone with fall protection.
Here is how to find a roof leak: start in the attic, during or just after a rain, with a good flashlight. Find the wettest spot, then follow the water trail uphill along the underside of the decking and the rafters until it stops. The leak is usually there or a little higher, at something that goes through the roof: a plumbing vent, a chimney, a skylight, a wall, or a valley where two slopes meet. The stain on your ceiling is where the water landed, which is often a few feet from where it got in.
This guide covers tracing a leak safely from inside, the places roofs usually leak, what you can do to stop the water until it is fixed, and when a leak needs a roofer. If you would rather have it found for you, our roof repair team does leak source identification on homes where the entry point is not obvious from inside or outside.
A roofer on a metal roof, ladder set at the eave. Finding the exact entry point usually takes someone up top; tracing it from the attic first narrows the search.
First, Stay Off the Roof
Wet shingles are slick, and a roof that is leaking may have soft spots you cannot see. OSHA counts 389 fatal falls to a lower level among 1,034 construction deaths in 2024, and roofs are one of the places it names.
Professionals working six feet or more up are required to have fall protection. A homeowner on a wet roof during a storm has none of that. Everything below can be done from the attic, the yard and a ladder at the gutter line on a dry day.
How to Find a Roof Leak From the Attic
- Go up during or right after rain. Water is easiest to trace while it is moving. On a dry day, look for dark stains, water marks or rot on the decking and rafters instead.
- Find the lowest wet point. That is usually right above the ceiling stain. Mark it.
- Follow it uphill. Water runs along the underside of the decking and down the rafters before it drips. Shine the light along the wood toward the ridge and follow the wet line or stain until it ends.
- Look at what is above that spot. A vent pipe, chimney, skylight, or a wall joining the roof there is your most likely culprit.
- Check for daylight. With the attic light off, pinholes of daylight through the decking show gaps around penetrations or missing material.
- Note it for the roofer. A photo of the wet trail and a measurement from a wall or chimney saves time on the roof.
If you cannot get into the attic, or insulation hides the decking, look at the outside from the ground with binoculars: missing or lifted shingles, a dark spot around a vent, or flashing pulled away from the chimney.
Where Roofs Usually Leak
| Leak source | What you see inside | Why it fails |
|---|---|---|
| Plumbing vent boot | Stain or drip near a bathroom or kitchen wall, often a round wet ring on the decking around the pipe | The rubber collar dries out and cracks with age |
| Chimney flashing | Wet framing beside the chimney, stains on the ceiling next to it | Flashing separates as it heats, cools and freezes |
| Valley | Wet line where two roof slopes meet | Water and debris concentrate there |
| Wall or dormer flashing | Stain at the wall line, wet wall framing | Step flashing loosens or was never installed right |
| Skylight | Drips at the skylight frame or a stain beside it | Flashing or seals around the frame fail |
| Missing or lifted shingles | A wet spot out in the open decking, away from penetrations | Wind lifted the edge or tore shingles off |
| Clogged gutters | Stains along the outside wall at the ceiling edge | Water backs up under the shingle edge |
Vent pipes deserve a special look. This Old House’s vent pipe guide (updated May 2026) lists deterioration of the rubber boot or flashing, storm or falling-debris damage, and temperature swings that split the pipe as the usual causes, with dripping sounds in the attic during rain and stains near the pipe as the signs.
Leaks That Only Show Up in Heavy Rain
A leak that appears only in a hard, wind-driven rain, and not in a steady shower, usually points to flashing. Wind pushes water sideways and uphill under flashing at chimneys and walls, and into lifted shingle edges, in a way ordinary rain does not. Leaks that appear only in winter can come from ice building up at the eaves; our post on ice dam roof damage covers that.
Where a porch roof meets the main house is a common leak point. The flashing at that joint carries every drop running down the wall.
How to Stop a Roof Leak Until It Is Fixed
You cannot fix a leak from inside, but you can limit the damage:
- Catch the water. Buckets in the attic and the room below, and towels to protect floors.
- Move what can be moved. Furniture, electronics and anything stored in the attic under the wet area.
- Stay out from under a sagging ceiling. Keep people out of rooms directly under significant roof damage.
- Get the opening covered. A properly secured tarp is the standard temporary fix for storm damage. It has to be fastened so the next wind does not turn it into a sail, and positioned to shed water away from the damage. That is roof work, so it is a job for a roofer.
- Document it. Photos of the stain, the attic trail and any outside damage help the repair and any insurance claim.
Tarping holds through normal weather but it is not a substitute for a repair. If storm damage caused the leak, our guide to whether insurance covers roof leaks explains what Tennessee’s regulator says to do next.
Who Should Fix a Leaking Roof?
For a small, easy-to-reach problem on a low, walkable roof, a handy homeowner can sometimes do it: This Old House rates replacing a vent pipe boot as an easy job where “the only difficult part is climbing onto the roof,” and its roof repair guide says some minor issues, like a few missing shingles, can be done yourself if you are physically able to work safely up there. The same guide says to hire a professional roofer for anything moderate or major.
A handyman can patch a roof, but a leak is a diagnosis problem as much as a repair problem. The ceiling stain is rarely right under the entry point, and sealant smeared over the wrong spot moves the leak instead of stopping it. A roofer finds where water is actually getting in, checks the decking around it, and fixes it with materials that match your roof. Before hiring anyone, see our guide to roofing contractor certification in Tennessee for when a state license applies and how to check one.
How We Find and Fix Leaks
We check the attic for where water is getting through, then go over the full roof surface and the flashing at every penetration, and match what we see on top with where water shows up inside. We photograph what we find and give you a written estimate before any work starts. Most repairs are done in one day once materials are on site. When water is coming in now, our emergency roofing crew gets temporary protection in place first.
We fix leaks from Jackson out to Milan, Humboldt, Trenton, Medina and Bells. To get a leak tracked down, see our roof repair services or request a free inspection below.
Frequently Asked Questions
How do I find where my roof is leaking?
Go into the attic during or right after rain with a flashlight, find the lowest wet spot, and follow the wet trail uphill along the decking and rafters. The leak is usually at or just above where the trail ends, often at a vent, chimney, skylight, wall or valley.
How do I stop my roof from leaking right now?
From inside, catch the water with buckets, move belongings and stay out from under any sagging ceiling. The opening itself needs to be covered from outside, usually with a secured tarp, which is a job for a roofer, especially on a wet roof.
Can a handyman fix a roof leak?
A handyman can patch a small, easy-to-reach problem, but finding where a leak actually starts is the harder part, since the ceiling stain is rarely right under the entry point. This Old House recommends a professional roofer for anything moderate or major.
Who is the best person to fix a leaking roof?
A roofing contractor. A roofer traces the leak to its entry point, checks the decking around it and repairs it with materials that match your roof. Before hiring, check whether the job size requires a Tennessee contractor license.
Why does my roof only leak in heavy rain?
Leaks that appear only in hard, wind-driven rain usually point to flashing at chimneys, walls or skylights, or to lifted shingle edges. Wind pushes water sideways and uphill under them in a way a steady rain does not.
Can I fix a leaking roof myself?
Some small fixes, like replacing a vent boot on a low, walkable roof, are manageable if you can work safely. Never go up on a wet roof during or after a storm, and leave flashing, valleys and steep roofs to a roofer.