Shower Door Sweep for a 3/4 Inch Gap
Quick answer
A 3/4 inch gap under a shower door is beyond standard sweeps: you need a 1 inch tall wipe, sold as "extra tall" or "oversized gap" sweeps. Before ordering, confirm the gap with the door closed and check hinge adjustment — a gap this size is often a sagged or mis-hung door. If the glass was simply cut short, an extra-tall wipe plus a drip rail is the standard fix.
3/4″ gap = 3/4″ · 0.750 in · 19.1 mm
Data reviewed:
What to measure before buying
- Glass thickness at the bare edge — pull back a section of the old seal first (1/4″, 5/16″, 3/8″, or 1/2″)
- Bottom gap from glass edge to threshold at the HINGE end, door closed
- Bottom gap at the HANDLE end, door closed — note any difference
- Door width along the bottom edge (for trimming the new seal)
- Where the water actually exits: under the door, off a bottom corner, or down a vertical edge
- Photo of the old seal's cross-section before removing it
- Gap with the door fully closed and latched — open-position readings run large on pivot doors
- Difference between hinge-end and handle-end gaps (over 1/8″ means adjust the hinges first)
Wipe height vs. gap size
| Measured gap | Recommended wipe | Note |
|---|---|---|
| 1/8–3/8″ | 1/2″ wipe | The standard sweep size on frameless doors |
| 3/8–5/8″ | 3/4″ wipe | Pick this when the gap varies end to end |
| 5/8–7/8″ | 1″ wipe | Sold as "extra tall" — check the listing states wipe height |
| 7/8–1 1/8″ | 1 1/4″ wipe | Last resort; fix door height or add a threshold first |
Seal types that close a 3/4″ gap
Sweeps that cover a 3/4″ gap
Shower Splash Guard Corner Fins, 10 in, Pair
- Glass
- —
- Length
- 10″
- Material
- Clear PVC
- Mount
- adhesive
Quarter-round fins that mount at the curb corners to block low-angle spray escaping around the fixed panel or door edge. Sold in pairs with adhesive or silicone.
⚠ Fixes corner splash only — water passing under the door needs a sweep, not a splash guard.
Extra-Tall Shower Door Sweep with Drip Rail, 3/8 in Glass, 1 in Wipe, 36 in
- Glass
- 3/8″
- Gap
- 5/8–7/8″
- Length
- 36″
- Material
- Polycarbonate channel, PVC wipe
- Mount
- press-on
- Trim
- Cut to size
Oversized 1 in wipe for gaps of 5/8 in–7/8 in. Measure at both ends first — oversized gaps are often hinge sag.
Extra-Tall Shower Door Sweep with Drip Rail, 3/8 in Glass, 1 in Wipe, 48 in
- Glass
- 3/8″
- Gap
- 5/8–7/8″
- Length
- 48″
- Material
- Polycarbonate channel, PVC wipe
- Mount
- press-on
- Trim
- Cut to size
Oversized 1 in wipe for gaps of 5/8 in–7/8 in. Measure at both ends first — oversized gaps are often hinge sag.
Extra-Tall Shower Door Sweep with Drip Rail, 1/2 in Glass, 1 in Wipe, 36 in
- Glass
- 1/2″
- Gap
- 5/8–7/8″
- Length
- 36″
- Material
- Polycarbonate channel, PVC wipe
- Mount
- press-on
- Trim
- Cut to size
Oversized 1 in wipe for gaps of 5/8 in–7/8 in. Measure at both ends first — oversized gaps are often hinge sag.
Surface-Mounted Shower Threshold Water Dam, 36 in, Trim to Size
- Glass
- —
- Gap
- 1/2–1 1/4″
- Length
- 36″
- Material
- PVC with foam-seal base
- Mount
- adhesive
- Trim
- Cut to size
Raises the sill under the door so a standard sweep reaches. Bond to a clean, dry curb with the supplied sealant or clear silicone and let it cure before showering.
⚠ Dry-fit with the door closed first: the door must clear the dam through its full swing.
Clip-On Drip Rail for Frameless Shower Door, 1/4 in Glass, 36 in
- Glass
- 1/4″
- Length
- 36″
- Material
- Clear polycarbonate
- Mount
- press-on
- Trim
- Cut to size
Angled fin catches water sheeting down the outside face and drains it back inside. Adds onto the glass above an existing sweep — no wipe included.
⚠ Install with the fin pitched slightly into the shower or it will drain the wrong way.
Common buying mistakes
- Ordering by glass thickness alone and receiving a standard 1/2″ wipe that waves in the breeze.
- Skipping the alignment check; on a sagged door a tall wipe drags at the hinge end and gaps at the handle end.
- Expecting a sweep to fix a curb that slopes away from the shower — water follows the slope regardless.
Frequently asked questions
What sweep fits a 3/4 inch gap under the door?
One with a 1 inch flexible wipe, usually listed as extra-tall or large-gap sweeps. Match the channel to your glass thickness and the wipe to the gap.
Is a 3/4 inch gap a sign of bad installation?
Sometimes. Installers leave up to 1/2 inch by design; more than that usually means the glass was cut short, the curb was built low, or the door has sagged. Check hinges before assuming the gap is original.
Can I add a threshold instead of a taller sweep?
Yes — a surface-mounted threshold or water dam raises the sill so a standard sweep reaches. It is the better fix when the curb itself sits too low or slopes outward.