Water coming in around a window is common in Florida's heavy storms. Here are the usual culprits.
1. Failed sealant
Exterior caulk cracks and shrinks in strong sun. Gaps let wind-driven rain in.
2. Blocked weep holes
Dirt and paint can clog the drainage holes in the frame, so water backs up and spills inside.
3. Flashing and installation problems
If the window was installed without proper flashing, water can track behind the frame. This is the most common serious cause.
4. Old, worn frames
Aging aluminum windows have worn seals and corroded corners that no longer shed water.
5. Stucco cracks
Cracks in the wall around the window can let water into the opening.
What to do
- Clean the tracks and clear the weep holes.
- Check and renew exterior sealant.
- If leaks persist, have a pro inspect the flashing and frame.
- Consider replacement if the windows are old. See window replacement.
If a new window leaks, see what to do if new windows leak.
A simple DIY check before you call
- Look at the exterior sealant for gaps or cracks.
- Check weep holes at the bottom of the frame for blockage (a small, soft tool can clear them).
- Examine the tracks for standing water, sand or debris.
- Look for stains on the interior wall below the window, which may suggest leaks from higher up.
- Notice when it leaks: only in heavy wind-driven rain, or in any rain?
Why location matters
Water can enter above a window and show up below it. A stain at the sill may come from a leak around the head of the frame, from stucco cracks above, or from a roof or wall issue elsewhere. A professional can trace the path.
Do not just caulk and hope
Caulk can help with small gaps, but covering the symptom can trap water in the wall. If leaks continue, have flashing and frame conditions checked. Persistent moisture can damage drywall and framing.
When replacement makes sense
If your windows are old, corroded or have failed seals, replacement may be a better investment than repeated repairs. A new window installed with proper flashing is designed to shed water correctly. See window replacement.
Frequently Asked Questions
Why do my windows leak only in heavy wind-driven rain?
Wind pushes water sideways into small gaps in sealant, flashing or old frames that would stay dry in normal rain.
Are weep holes supposed to be there?
Yes. They let water drain out of the frame. They should be clear, not sealed.
Will new windows stop leaks?
Properly installed new windows with correct flashing and sealing greatly reduce leaks.
Can stucco cause window leaks?
Yes. Cracks in stucco near the window can let water reach the frame area. They should be sealed and the stucco repaired.
Ready to talk about your project? Get a free written quote (usually within 48 hours) or call 786-343-4729. EZ Glazing Corp is licensed and insured (License #SCC131153391) and handles the permit and inspection.