Sliding Glass Door Leaking Water When It Rains? Causes & Fixes
Puddle by the patio door after every storm? You're not alone. It's one of the most common calls we get in Florida, and most leaks are cheap and easy to fix.
Quick Test: Find the Leak Close and lock the door. Have someone inside watch while you spray a garden hose (gentle flow) on the bottom track first, then the middle where the panels meet, then the sides and top. Where the water shows up tells you the cause.
5 Common Causes (and Fixes)
1. Clogged weep holes
The #1 cause. Small drain holes on the outside of the track let rainwater escape. When dirt and sand block them, the track fills up and overflows inside.
Fix: Vacuum the track and clear each hole with a pipe cleaner or zip tie. Pour a cup of water in the track to make sure it drains. Full steps here: how to clean sliding door tracks.
Never caulk the weep holes. It makes the leak worse.
2. Worn weatherstripping
Florida sun flattens the seals along the door edges. Rain then blows right through.
Fix: Replace the worn strips. Keep rubber seals soft with silicone spray (not WD-40).
3. Worn rollers (door is sagging)
Bad rollers make the door drop and leave a gap at the top. If your door also drags or won't latch, this is likely it.
Fix: Try the adjustment screws at the bottom corners. If that doesn't work, you need new rollers or a pro roller repair.
4. Damaged track
Dents, cracks, or salt-air corrosion stop the door from sealing.
Fix: A worn track can often be covered with a screw-down track cover. Cracked tracks need track repair.
5. Cracked caulk around the frame
Old caulk on the outside of the frame lets water in along the sides.
Fix: Remove the old caulk and reseal the outside edge of the frame with exterior silicone.
Only Leaks in Big Storms?
Strong wind can push rain over the sill even on a healthy door. Keep weep holes clear, lock the door so it seals tight, and see our hurricane prep guide.
When to Call a Pro
It still leaks after cleaning the track
The door sags, drags, or won't lock
You see soft floors, swollen baseboards, or mold
It's an impact door
Good news: a leaking door almost never needs replacing. See repair vs. replace and our 2026 repair price guide.
We fix leaking sliding doors in Daytona Beach, Orlando, Palm Coast, and across Central Florida.
Call (386) 888-7434 · Orlando: (689) 220-6966 · or book online.
FAQ
Is water in my sliding door track normal?
A little during rain, yes. It should drain within minutes. If it sits for hours, the weep holes are clogged.
Should I caulk the track to stop the leak?
No. Only caulk the outside of the frame where it meets the wall. Sealing the track traps water.
Do I need a new door?
Usually not. Cleaning, new seals, new rollers, or a track repair fix most leaks.
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