Tub shower doors: what a tub enclosure is and how it works
A tub enclosure is glass mounted on the rim of the tub, running from wall to wall across the open side. It can be a pair of sliding panels, a single slider, a hinged panel or one fixed panel that covers part of the tub.
The glass sits on the tub deck, so the tub edge has to be flat and fairly level for a good seal. Framed units sit in a bottom track caulked to the tub. Frameless units use clear seals and a small guide instead.
When a shower door over the tub is the smart call (and when it isn't)
A shower door over tub openings makes sense when:
- The curtain lets water onto the floor, or the liner keeps growing mildew.
- You want the bathroom to look more finished without a full remodel.
- The tub is used mostly as a shower.
It may not be the right call when:
- Someone bathes small children in the tub often. A full enclosure makes reaching in harder, so a single fixed panel or a curtain may suit better.
- The tub has a curved or sloped rim. Bob Vila notes some door models cannot be installed on a curved bathtub. A local installer can tell you what will fit.
Typical installed cost for a 60 inch door (not a quote)
$300 to $1,200 installed
National figures for in-stock 60 inch doors: about $300 to $400 framed and $900 to $1,200 frameless, installed. Custom sizes cost more.
Source: Fixr
Options for a bathtub glass door
Framed bypass doors. Two panels that slide past each other. The lowest-cost choice, and the most common in older homes. See sliding and bypass doors.
Frameless sliders. Heavier glass on exposed rollers with a small bottom guide. Easier to clean than a framed track.
Fixed panel (splash panel). One panel covering the shower end of the tub, open at the other end. Simple and easy to reach past. See glass shower panels.
Hinged tub screen. A panel that swings, used where a slider will not fit.
All tub glass has to be safety glass. Under the model building code, glass in enclosures containing or next to bathtubs with a bottom edge under 60 inches above the standing surface is a hazardous location.
The Cincinnati factor: older tubs and hard water
Cincinnati has a lot of older tub baths. Census data puts the median year built at 1978 for the middle zip code in the metro, 1938 in 45208 (Hyde Park) and 1949 in 45209 (Oakley). Tubs and tile walls in homes that age are often a little out of level or plumb, which is why measured, custom-fit glass usually beats a stock kit.
Hard water is the other issue. Greater Cincinnati Water Works reports plant averages of roughly 7 to 8 grains per gallon (approximate, per Culligan). On a tub, water sits on the deck and in the bottom track, so scale builds up fast. A coated glass panel and a track you can wipe out make daily care much easier.
How a tub door install goes
The installer removes the curtain rod or old door, scrapes off old caulk and checks the tub rim for level. Framed units get a bottom track and wall jambs, then the panels are hung and adjusted. Frameless sliders and fixed panels get clips or a roller bar, a small guide and clear seals.
This Old House notes most standard shower door installations take two to four hours, with labor typically $50 to $100 per hour. Custom glass for an older, out-of-square tub adds a second visit, since the glass is made to the measurements.
What to have ready when you call
- A photo of the whole tub, plus a close-up of the tub rim where the glass will sit.
- Rough width of the tub opening, wall to wall.
- What is there now (curtain, framed slider) and whether it needs removing.
- Your style choice: bypass, frameless slider, fixed panel or hinged screen.
- Hardware finish and whether you want a coating.
The installer will measure exactly and check the tub rim before ordering.
Common questions
How much do tub shower doors cost?+
Fixr lists an in-stock 60 inch framed sliding door at about $300 to $400 installed, and a 60 inch frameless door at about $900 to $1,200 installed. Custom glass and odd sizes push the price up.
Can you put a glass door on any bathtub?+
Most standard alcove tubs work. The rim needs to be flat enough to seal, and some door models cannot go on a curved tub, per Bob Vila. Send a photo of the tub rim when you request a quote.
Is a fixed panel or a sliding door better over a tub?+
A fixed panel is simpler, cheaper to keep clean and easy to reach past, but it leaves part of the tub open. A sliding door closes the whole opening and holds in more water. Households that bathe kids often tend to prefer a fixed panel.
What is the best protective coating for shower glass?+
A water-repellent coating applied at the factory or by the installer helps glass shed hard water. This Old House prices water-spot coatings at about $4 to $20 per square foot. Ask the installer which product they use.
Can you replace just the glass in a tub door?+
Often, if the frame and track are in good shape and the panel size is available. If the frame is pitted or the track is corroded, a full replacement is usually the better value. See [shower door repair](/shower-door-repair/).
