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Fix a shower door that leaks

We'll identify where it leaks—bottom seal, sides, or frame—then clean, adjust, or replace seals and caulk, or tell you when to call a pro.

Troubleshooting · Home maintenance
30–60 min
What you'll need
  • Utility knife or caulk removal tool (for frame-to-wall recaulking)
  • Rubbing alcohol and clean rag
  • Replacement sweep seal or pivot seals (match door brand and model)
  • 100% silicone or silicone-latex caulk (for tubs and showers)
  • Screwdriver (for hinge adjustments)
Step 1 of 9

Quick triage — pick your path

Quick triage — pick your path

Choose the option that matches what you see. You can jump straight to that section.

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Steps

Goal: Identify where the leak is, then fix the seal or caulk.

  • Run the shower and watch where water escapes—along the bottom of the door, at the sides, or where the frame meets the wall. Wipe dry and run again to confirm.
  • Good: You know the leak location. Proceed to Bottom seal, Side seals, or Frame caulk.
  • Bad: Unclear—run the shower and observe again.

Bottom seal

Goal: Fix a leak at the bottom of the door by cleaning, adjusting, or replacing the sweep seal.

  • Inspect the sweep seal—the flexible strip along the bottom of the door. If it is cracked, flattened, or does not touch the threshold, it will leak.
  • Clean the track and threshold of soap and mineral buildup. Adjust the sweep height if your door has adjustment screws. When the sweep contacts the threshold evenly, water should not pass.
  • If the sweep is worn, remove it and replace with a matching part. Order by door brand and model. Slide or clip the new sweep into place.
  • Good: The sweep contacts the threshold with no gaps. No more bottom leak.
  • Bad: Frame may be warped—call a pro.

Side seals

Goal: Fix a leak at the sides by cleaning, adjusting, or replacing the pivot seals.

  • Inspect the pivot seals along the hinge and latch sides. Clean them and the track. Check that the door closes squarely. If crooked, adjust the hinge screws. Loosen slightly, reposition the door so it closes flush, then tighten.
  • If the pivot seals are cracked or compressed, remove them and replace with matching parts. Confirm they contact the frame when the door is closed.
  • Good: The door closes squarely and the seals contact the frame. No more side leak.
  • Bad: The door will not align—call a pro.

Frame caulk

Goal: Fix a leak where the frame meets the wall by recaulking.

  • Inspect the caulk where the shower frame meets the wall or tile. If cracked or pulling away, remove it with a utility knife or caulk removal tool. Press the area—if the wall or tile feels soft, moisture may have gotten behind; call a pro.
  • Clean the joint with rubbing alcohol and let it dry completely. Apply 100% silicone or silicone-latex caulk made for tubs and showers. Tool the bead with a wet finger for a smooth finish. Let it cure 24–48 hours before using the shower.
  • Good: A smooth, continuous bead with no gaps. No more frame leak.
  • Bad: Wall is soft or damaged—call a pro.

When to get help

Call a handyman or glass professional if:

  • The door frame is warped.
  • The door will not align after hinge adjustments.
  • You have a frameless glass door with damaged hinges or hardware.

Verification

  • No water escapes along the bottom of the door when the shower runs.
  • No water sprays out at the sides or where the frame meets the wall.
  • The sweep seal contacts the threshold evenly.
  • The pivot seals contact the frame when the door is closed.
  • The frame-to-wall caulk is intact with no gaps.

Escalation ladder

Work from the device outward. Stop when the problem is fixed.

  1. Identify leak location Confirm whether the leak is at the bottom, sides, or frame-to-wall.
  2. Bottom seal Clean track, adjust sweep height, or replace worn sweep.
  3. Side seals Clean pivot seals, adjust door alignment, or replace worn seals.
  4. Frame caulk Remove old caulk, clean and dry, apply new silicone caulk.
  5. Call a pro Warped frame, door will not align, or frameless door needs professional repair.

What to capture if you need help

Before calling support or posting for help, have these ready. It speeds everything up.

  • Leak location (bottom, sides, frame-to-wall)
  • Door brand and model (for replacement seals)
  • Steps already tried

Is the leak at the bottom of the door?

Run the shower and watch where water escapes. Bottom leaks come from the sweep seal; side leaks from pivot seals; frame leaks from caulk.

Run the shower and observe. Wipe the area dry and run again to confirm. Bottom: water escapes along the door bottom. Sides or frame: water at hinge, latch, or where the frame meets the wall.

Yes No

You can change your answer later.

Is the leak at the sides or at the frame-to-wall?

Side leaks: hinge or latch. Frame leaks: caulk where the frame meets the wall.

Check whether water escapes at the door sides (hinge or latch) or where the frame meets the wall. Sides: pivot seals or door alignment. Frame: caulk at the frame-to-wall joint.

Sides Frame-to-wall

You can change your answer later.

Is the sweep seal worn or misaligned?

The sweep seal is the flexible strip at the bottom of the door. It must contact the threshold when the door closes.

Inspect the sweep seal. If cracked, flattened, or not touching the threshold, it will leak. Clean the track and threshold. Adjust the sweep height if your door has adjustment screws. Good: sweep contacts threshold—leak should stop. Bad: sweep is worn—replace it. If the door frame is warped, call a pro.

Yes (worn or misaligned) No (adjustment fixed it)

You can change your answer later.

Replace the sweep seal

Remove the old sweep. Match the door brand and model—order a replacement from a hardware store or manufacturer. Install the new sweep. Confirm it contacts the threshold when the door closes. Good: no more bottom leak. Bad: frame may be warped—call a pro.

Done

Is the leak at the sides or at the frame-to-wall?

Side leaks: hinge or latch seals. Frame leaks: caulk where the frame meets the wall.

Check whether water escapes at the door sides (hinge or latch) or where the frame meets the wall. Sides: pivot seals or door alignment. Frame: caulk.

Sides Frame-to-wall

You can change your answer later.

Are the pivot seals worn or is the door misaligned?

Pivot seals run along the hinge and latch sides. A crooked door will not seal.

Inspect the pivot seals. Clean them and the track. Check that the door closes squarely. If crooked, adjust the hinge screws. Good: door closes flush—leak stops. Bad: seals are cracked or compressed—replace them. If the door will not align, the frame may be warped—call a pro.

Yes (replace or adjust) No (adjustment fixed it)

You can change your answer later.

Replace pivot seals or adjust door

Replace worn pivot seals with matching parts. Or adjust the hinge screws so the door closes squarely. Confirm the seals contact the frame when closed. Good: no more side leak. Bad: call a pro if the door will not align.

Done

Is the caulk cracked or separated?

Caulk where the frame meets the wall can crack and let water seep behind.

Inspect the caulk at the frame-to-wall joint. If cracked or pulling away, remove it. Press the wall—if soft or rotted, call a pro. If firm, clean and dry the joint, then apply 100% silicone or silicone-latex caulk. Let it cure 24–48 hours. Good: new caulk seals the joint. Bad: wall is damaged—call a pro.
Question

Is the caulk cracked or separated?

Done

Leak fixed

The shower door no longer leaks. Confirm by running the shower and checking that no water escapes at the bottom, sides, or frame.

Done

Reviewed by Blackbox Atlas

Frequently asked questions

Why does my shower door leak at the bottom?
Usually a worn or misaligned sweep seal—the flexible strip at the bottom of the door. Clean the track, adjust the sweep height so it contacts the threshold, or replace the sweep if it is cracked or flattened.
Why does water leak around the sides of the shower door?
Often worn pivot seals or a misaligned door. Clean the seals and track, adjust the door hinges so the door closes squarely, or replace the pivot seals if they are cracked or compressed.
When should I call a pro for a leaking shower door?
Call a pro if the door frame is warped, the door will not align after adjustments, or you have a frameless glass door that needs hinge or hardware replacement. Warped frames and specialty glass work often require a professional.

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