The short answer
Check the Weep Holes
Weep holes are small slots along the bottom track that let rainwater escape to the outside. If they get clogged with dirt, leaves, or debris, water backs up and spills over the track into your home. Look for these openings on the exterior side of the track and clear them gently with a thin wire or a toothpick.
After clearing, pour a small cup of water onto the track to see if it drains out through the weep holes. If the water still sits, the holes may be blocked deeper inside. In that case, you may need to remove the door panel to access the track, or call a local water damage pro to inspect for hidden issues.
- Inspect weep holes monthly, especially before rainy season.
- Use a pipe cleaner or compressed air to clear debris.
- Make sure the track slopes slightly toward the outside.
- If weep holes are missing, a pro may need to add them.
- Keep the track clear of leaves and standing water.
Inspect the Weatherstripping
Weatherstripping along the bottom and sides of the door keeps water out when the door is closed. Over time, it can crack, shrink, or pull away, leaving gaps that let rain in. Run your hand along the seal to feel for soft spots or missing sections. Replace any damaged weatherstripping with a new piece that matches the groove.
Also check the door sweep at the bottom. If it is worn or doesn't touch the track evenly, water can sneak under. Adjust the sweep so it presses firmly against the track, but not so hard that the door drags. If the sweep is beyond repair, replacing it is a simple fix.
Look at the Track Alignment
The bottom track should be level and sit flush with the floor. If the track is bent, warped, or installed at an angle, water will pool in low spots and leak inside. Use a level to check the track from one end to the other. If it slopes toward the interior, that is a problem.
A shifted door panel can also cause leaks. If the door rubs on one side or doesn't latch evenly, the panel may be out of alignment. Adjust the rollers at the bottom corners of the door to lift or lower it. This can help the door seal properly and keep water out.
Consider the Drainage Outside
Sometimes the leak is not the door itself but the area around it. If the patio slopes toward the door, rainwater will collect at the threshold. Check the concrete or deck just outside the door. It should slope away from the house. If not, water can push against the track and find its way in.
Gutters and downspouts also matter. If they overflow or discharge near the door, the ground gets saturated and water seeps under the track. Clean gutters regularly and extend downspouts at least a few feet from the foundation. If the ground is low, you may need to add soil or a drain to redirect water.
When to Call the Pros
If the leak persists after clearing weep holes, replacing weatherstripping, and adjusting the track, the problem may be more involved. Water could be getting behind the door frame or under the subfloor. That kind of hidden leak can damage drywall, flooring, and framing over time.
In that case, a water damage inspection can help pinpoint the source. The pros use moisture meters and other tools to find where water is entering. If you notice staining, swelling, or musty odors, act quickly to prevent mold and further damage.
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Call Now (386) 272-5697Frequently asked questions
Can I fix a leaking patio door track myself?
Yes, many simple fixes are DIY, like clearing weep holes or replacing weatherstripping. If the door is misaligned, you can adjust the rollers. But if the leak continues or you see water damage inside, the right move is to call a pro for a thorough inspection.
How do I know if the leak is causing water damage?
Look for water stains on the floor or wall near the door, peeling paint, swollen wood, or a musty smell. If you notice any of these, moisture may be trapped inside. A water damage inspection can confirm the extent and help you decide on cleanup.
What should I do right after a heavy rain leak?
Dry the area with towels and a fan to prevent mold. Move furniture and rugs away from the door. Clear any standing water from the track. Then check the weep holes and weatherstripping. If the leak is severe, contact a professional to assess the damage.