Special Installations · Custom Fit · 2026
Nothing Standard About It:
Frameless Shower Doors for
Sloped Ceilings and Historic Homes
Walls that lean. Ceilings that slope. Openings shaped by fifty years of tile. None of this prevents a frameless shower door — it requires more careful measurement and the right configuration.
Sloped Ceilings
Out-of-Plumb Walls
Non-Standard Openings
Custom Config
The standard shower door is designed for the standard bathroom: plumb walls, level floor, 8-foot ceiling, 60-inch opening. In American housing stock built before 1980 — and in any bathroom tucked under a roofline — none of those conditions reliably apply.
Walls settle and lean. Ceilings slope at angles determined by roofline geometry rather than bathroom planning. Tub alcoves were framed to fit fixtures that don't correspond to modern standard dimensions. None of this prevents a frameless shower door installation. It requires more careful measurement, more deliberate product selection, and in some cases a custom configuration — but the result is the same specification that goes into new construction.
A
The Sloped Ceiling Problem
What actually matters — and the one measurement that decides it
The relevant measurement isn't the ceiling height at the center of the room. It's the clear vertical distance from the shower floor to the ceiling directly above the door position, on the low side of the slope.
Clearance requirements by door type
UKS04 84 in.
88 in.
Min. clear height at track position
UKS04 76 in.
80 in.
Min. clear height at track position
UKH07 Swing
No track
Most compatible with sloped ceilings
Swing door advantage: The
UKH07 has no top track — hinge mounts to the wall on the high-ceiling side. Door swings toward the lower area, typically clearing with adequate room to operate. Where a sliding door can't fit, a swing door often can.
B
Historic Home: Seven Variables to Measure
Each one requires a specific measurement before ordering
Walls in older homes settle and lean over decades. Standard swing door hardware accommodates up to 1/8 inch. Beyond that, the
UKH07RP micro-adjust hinge provides 1/8 inch per side of lateral adjustment.
Threshold
≤ 1/8 in. → UKH07 standard
> 1/8 in. → UKH07RP
02
Opening width after tile
Historic homes are often tiled multiple times. Each layer adds 3/8–1/2 inch per wall. A nominally 60-inch alcove may be 57–58.5 inches after three generations of tile. Measure at three heights — use the smallest reading.
Model match
46–60 in. → UKS13
56–72 in. → UKD01
Other → Custom
03
Opening width asymmetry
In older homes, walls frequently aren't parallel. If your three width readings vary by more than 1/2 inch, the walls are converging or diverging. Submit all six measurements with a custom configuration request — Unikoo's team reviews these before fabrication.
Flag if:
3 readings vary >1/2 in.
→ Custom order
04
Floor and tub deck level
Original cast iron tubs were installed on floors that may have shifted or sagged since installation. An unlevel deck creates a gap between the door sweep and threshold that varies across the door width — sealing on one side, leaking on the other.
Threshold
≤ 1/4 in. → note on order
> 1/4 in. → discuss before ordering
05
Ceiling height and obstructions at door position
Older homes frequently have crown molding, exposed beams, or built-in details that project into the space above the opening. Measure from shower floor to the lowest overhead obstruction at the door position — not the ceiling height at room center.
06
Substrate type behind tile
Historic tile is often applied over plaster rather than cement board or drywall. Plaster requires a slower drilling speed with a diamond-tip bit and different anchor types — toggle anchors or specialized plaster anchors rather than standard hollow-wall anchors. Confirm substrate type before selecting anchors.
07
Non-standard tub dimensions
Pre-1960 cast iron tubs were manufactured in non-standard lengths — 54, 56, and 57 inches were common, as were non-standard deck heights that don't match modern 66-inch door height assumptions. If opening width or tub deck height don't correspond to standard configurations, a custom order is the correct path.
C
Configuration Decision by Scenario
Match your situation to the right specification
Sloped ceiling — adequate height at hinge side
→
UKH07 frameless swing door. No top track clearance required. Hinge mounts to the high-side wall. Door swings toward the lower ceiling area with adequate clearance to operate.
Sloped ceiling — limited height throughout
→ Custom height configuration. Submit the clear height measurement at the door position. Unikoo fabricates to any height specification — quote in 2 business hours.
Walls significantly out of plumb
→
UKH07RP with micro-adjust hinge for swing doors. For sliding doors: shim the track mounting hardware to level at the bracket position.
Non-standard opening width (outside 46–72 inch range)
→
Custom configuration program. Any width, any height, same 3/8-inch SGCC glass and stainless hardware as the standard line. Quote in 2 hours.
Multiple variables simultaneously
→ Custom configuration with full measurement submission. Call
888-404-5533 before ordering — Unikoo's team reviews complex configurations before fabrication to confirm specification and hardware selection.
D
The Ten Measurements
Standard six plus four additional for non-standard installs
| Measurement |
Standard install |
Non-standard add |
| Width at floor (6 in. up) |
Required |
— |
| Width at mid-height |
Required |
— |
| Width at top (6 in. below door top) |
Required |
— |
| Wall plumb — hinge side |
Required |
Note direction + inches off |
| Wall plumb — latch side |
Required |
Note direction + inches off |
| Height from threshold |
Required |
Measure both sides separately |
| Ceiling height at door position |
— |
Required — sloped ceilings |
| Lowest overhead obstruction |
— |
Required — beams / molding |
| Substrate type |
— |
Plaster / cement board / drywall |
| Tub deck level |
— |
Note high and low side dimensions |
What Doesn't Change
The glass specification that goes into a custom configuration for a 1920s craftsman bungalow with a sloped ceiling and an out-of-plumb wall is identical to what goes into a new construction primary bathroom.
3/8 in.
SGCC + ANSI Z97.1
certified glass
316 SS
Structural hardware
marine grade
Both
EnduroShield coating
interior + exterior
Free
Nationwide shipping
+ liftgate
The non-standard geometry is a measurement problem. The specification is the same.
Ready to submit your dimensions?
Custom quote in 2 hours · Same spec as standard line · Free shipping
Custom configuration — quote in 2 hours · UKH07 swing door · Standard configurations from $650
