November 9, 2026 · 8 min read · Repairs
A roof leak that appears only in heavy or wind-driven rain leaves clues. Learn what the timing means and what to do before your roofer arrives.
The short answer
A roof leak that appears only in heavy rain gives you a useful clue.
A long downpour may overwhelm a slow drain or reach a worn seam. Rain driven from one direction points toward a wall, vent or roof edge on that side. A drip that starts late may mean water is traveling before you see it. Write down the timing and wind direction. If water is coming in now, call (561) 318-8624 at any hour.
Safety first
Look at the ceiling before you move a bucket into place. A bulge means water is collecting above the drywall. Keep people and pets out of that area. Wet drywall can fall without warning.
If water is near a light, ceiling fan, outlet or electrical panel, do not touch the fixture, the switch or the water. Leave the area and call an electrician. If you can safely reach the correct breaker without crossing water, turn that circuit off. If you are unsure which breaker controls it, wait for an electrician.
Move furniture, rugs and electronics only when you can do so without standing beneath a bulging ceiling. Your first decision is simple: protect people before you protect the room.
What the rain pattern tells you
The weather does part of the detective work. Note what happened in the hour before the drip began. These three patterns point the inspection in different directions.
It takes a long summer downpour
A roof that stays dry in a short shower but leaks after hours of rain may have a small opening that needs time to admit enough water to show indoors. A valley filled with leaves, a slow flat-roof drain or a tired seam can also hold water longer than it should.
Write down how long it rained before the first drip. Check from the ground for leaves at a visible drain or valley. Do not climb up to clear them while the roof is wet.
It leaks in wind-driven rain from one direction
Wind can push rain uphill and sideways. If the room leaks only when rain comes from the east, for example, the useful clue is what sits on the east and uphill side of the stain. That may be a wall joint, roof edge, vent or window above the roof.
Use your phone compass or a weather app to note the wind direction. Then photograph the outside wall from the ground. That record is more useful than guessing where the roof opening sits.
The drip starts hours later or continues after rain stops
Water may be collecting in insulation, traveling along a rafter or moving beneath the roof covering before it reaches the ceiling. A late drip does not mean a new leak started after the storm. It often means the path is longer.
Record when the rain stopped and when the last drip fell. Do not cut or puncture a bulging ceiling yourself. A wet area may be larger than it looks.
Likely places rain gets in
Common entry points include loose metal at a wall, a split collar around a plumbing pipe, a worn valley, a cracked tile, a lifted shingle and an open seam on a low-slope roof. Leaves around a drain can make a small defect show itself during a long storm.
You do not need to name the failed part. You need to describe the pattern and show where the stain appeared.
Not every ceiling drip comes through the roof
An air conditioner can produce a roof-like stain. A blocked condensate line may overflow when the unit runs hard. A cold duct can also sweat onto insulation or drywall. If the stain appears on a hot, dry day, note whether the air conditioner was running.
Windows and walls deserve a look too. Rain can enter a window above the roofline or a crack in an upper wall, then travel inside the wall before appearing in a lower room. Tell the roofer about any window, balcony or second-story wall above the stain. That can save time and prevent work on the wrong surface.
What to do before we get there
- Mark the stain. Put a small pencil mark at its edge and add the date. You will see whether it grows.
- Take wide and close photos. Include the whole room, the stain and any nearby light or vent.
- Write down the pattern. Note rain length, wind direction, first drip and last drip.
- Catch water safely. Use a bucket only if the ceiling is flat and firm and no electrical fixture is nearby.
- Stay off the roof. Wet tile, shingles and metal are slippery. Walking can also break tile and erase useful water trails.
- Call when water is active. You can reach Molsbee Roofing at (561) 318-8624 at any hour.
How we track down the opening
We start in the attic when it is safe and accessible. Dark wood, wet insulation and water marks can show the route. We compare that route with the ceiling stain, then inspect the roof uphill of it. The roof check covers the nearby joints, edges, roof covering and openings for pipes or vents.
Sometimes the surface tells the full story. Sometimes part of the roof must be opened to confirm what is happening below the tile, shingle or metal. That step can reveal damaged underlayment, which is the water-resistant layer beneath the roof covering, or wet roof deck. If part of the roof needs to come open to confirm it, we tell you before we do it.
The inspection is free. You receive photos of the problem and a written price before work starts. You also receive photos of the completed work. Read more about the process on our roof leak detection page.
I had a roof leak that needed attention, and Molsbee Roofing was honestly a breath of fresh air. They came out quickly, found the issue right away, and didn't try to sell me on a full roof replacement or push any unnecessary work.
Why a repaired leak can return
The first repair may have covered the visible opening while missing a second opening uphill. Water can then follow the old path and stain the same ceiling spot. A surface patch can also separate as the roof heats and cools.
On an older roof, the exposed defect may be only one weak point in worn underlayment. Repairing that point can be sensible, but another nearby area may fail later. Ask what was found beneath the roof covering and whether the repair addresses the full wet area.
Repair or a new roof?
One isolated opening with sound material around it may call for a repair. Several wet areas, broad underlayment damage or repeated repairs call for a closer look at replacement.
Age is context, not a diagnosis. Typical local ranges are 13 to 18 years for shingle, 15 to 20 for tile, 20 to 25 for metal and 15 to 20 for flat roofs. A younger roof can have storm or installation damage. An older roof may still have a repairable defect. Decide from the roof condition, the size of the wet area and the repair history.
Our guides to roof repair cost and repair or replacement can help you prepare questions.
Help for a roof leak near you
Read about roof leak repair in West Palm Beach, Boca Raton, Delray Beach, Boynton Beach, Jupiter, Wellington and Lake Worth Beach.
Next step
Leaking when it rains? Let's find out why.
Schedule a free inspection. We will show you photos of the problem and put the price in writing before work starts.
