Fix a Shower Door Leak
Start from the symptom, not the seal. Each page below diagnoses one specific failure, tells you exactly what to measure, and links matching replacement parts from our reviewed catalog.
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Fix a Shower Door That Leaks at the Bottom
A shower door that leaks at the bottom almost always has one of four problems: a worn or hardened wipe on the bottom sweep, a missing drip rail letting runoff pour off the lower corner, a gap that grew as the door sagged, or a curb that sl…
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Fix a Shower Door That Leaks at the Side
Side leaks split into two cases. Hinge-side leaks come through the gap between the door glass and the wall or fixed panel it pivots from — fixed with a soft vertical side seal, bulb seal, or finned u-channel. Handle-side leaks escape where…
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Stop Water Splashing Under the Shower Door
Splash-under leaks happen when spray bounces off the floor or walls and travels under the door faster than the curb can drain it back. The fix stack, in order: a bottom sweep whose wipe actually overlaps the gap by 1/4 inch, a drip rail to…
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Fix a Shower Door Seal That Keeps Falling Off
A press-on seal that keeps falling off is almost always the wrong channel size for the glass: a 3/8 inch seal on 5/16 inch glass grips nothing, and heat plus soap film finishes the job. Measure the bare glass edge with a caliper, buy the c…
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Fix a Shower Door Gap That Is Too Big
When the gap under a shower door passes 1/2 inch, first find out why: measure at the hinge end and the handle end. Uneven readings mean the door has sagged and hinge adjustment will shrink the gap for free. An even oversized gap means shor…
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Fix Water Leaking Between the Shower Door and the Wall
A gap between the door edge and the wall leaks because walls are never perfectly plumb — the gap might be 1/8 inch at the bottom and 3/8 inch at the top. A bulb seal on the glass edge compresses to fill that variation; a finned u-channel h…
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Fix a Shower Door Sweep That Drags
A dragging sweep means the wipe is compressed harder than its design flex — usually a wipe more than 1/4 inch taller than the gap, a door that sagged so the hinge end pinches, or old vinyl that swelled and stiffened. Measure the closed-doo…
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Yellowed or Moldy Shower Door Seal: Clean or Replace?
Surface mold on a shower door seal cleans off with a vinegar or diluted-bleach soak, but yellowing is different: it is UV and chemical degradation inside the vinyl, and no cleaner reverses it. The practical rule — if the seal is discolored…
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Fix a Shower Door Magnet That No Longer Pulls Shut
A shower door magnet that no longer pulls shut has almost never lost its magnetism. The vinyl strip carrying it has hardened, shrunk, or torn, so the two faces stop meeting. Press the door closed by hand: if it holds, the magnets are fine.…
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Fix Water Leaking Between Two Glass Panels
Water between two glass panels escapes at one of three joints, and each takes a different seal. A swinging door meeting an inline fixed panel needs an h-jamb seal or a 180-degree magnetic pair. Two fixed panels in line take a glass-to-glas…
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Fix a Sliding Shower Door That Leaks at the Bottom
A sliding shower door leaks at the bottom through four paths: weep holes in the track clogged with soap scum, a crumbled vinyl insert in a framed panel's bottom rail, spray escaping the vertical overlap between the panels, or water running…
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Fix a Shower Door That Won't Stay Closed
A frameless door that drifts open has one of four problems, in this order of likelihood: hinge sag from loosened clamp screws, an out-of-plumb lean the house settled into, worn or repelling magnetic strips, or scale-caked strike vinyl. Eve…
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Fix a Squeaky or Rattling Shower Door
Map the noise first: a squeak on the swing is a dry or scaled hinge, a rattle when closed is a hardened seal or loose jamb, grinding on a slider is worn rollers or grit in the track, and a sharp creak is glass rubbing metal — the one to tr…
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Put a Sliding Shower Door Back on Track
A derailed bypass panel goes back on in minutes: lift the panel slightly, guide the top rollers onto their rail, lower it, and confirm the bottom edge sits in the guide. The real job is stopping the repeat — worn rollers with flat spots, a…
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Shower Door Shattered: Causes, Cleanup & Prevention
Tempered shower glass that "exploded" broke for one of two reasons: a microscopic nickel-sulfide inclusion frozen into the glass at the factory finally converting and expanding, or accumulated edge damage — chips at hinge cutouts, corners …