The enclosure for a bathroom built around the shower. What frameless means, what has to be behind the wall, how it is measured, and how it keeps water in.
A frameless shower enclosure is 3/8-inch or 1/2-inch tempered glass held by hinges, clips and sometimes a header, with no aluminum frame around the glass. The glass carries its own weight and stiffness, which is why it is thick, and the hardware is the design element: hinges, clips, pulls and header in chrome, brushed nickel, matte black or brass. It is the enclosure for a renovated bathroom where the shower is the feature, and it is most of the shower work we do in Brooklyn, Manhattan and Staten Island.
Swing door with fixed panel — the most common: a hinged door beside a fixed panel, in an alcove or on a knee wall. Door and return for a corner shower: two glass planes meeting at a corner, the door in one. Neo-angle for a corner with a 135-degree door. Frameless sliding — a top-rolled bypass or single slider on a header bar, for tub-showers and narrow bathrooms where a swing door has nowhere to go; see sliding shower doors. Fixed panel only — a single splash panel with no door, for a walk-in; see shower panels. Steam enclosures with a transom and a closed top, as on Ocean Avenue.
A 3/8-inch tempered door 30 by 72 inches weighs about 75 pounds and hangs on two or three hinges bolted through the tile. Behind the tile there must be solid backing — wood blocking, plywood, or solid masonry — where the hinges land. Drywall or cement board alone will not hold it; the door sags within a year and the strike side drops. On a new bathroom we ask the contractor to block the hinge wall at framing; on an existing one we ask what is there, and if the answer is nothing, a header bar that carries the hinge load to the ceiling or the opposite wall is the fix.
Frameless glass is cut to the opening as it is, not as it was drawn. We measure after the tile is finished, with a laser, at the top, middle and bottom of every plane, and the glass is cut to the taper if the wall is out of plumb. Up to about 3/8 inch of variation is absorbed by the glass and the seal; beyond that we say so, and a semi-frameless or header design is the honest recommendation. Lead time from measurement is typically one to two weeks for tempered glass, longer for low-iron or special shapes.
Frameless enclosures are not watertight by design. They keep the floor dry through a bottom sweep, clear vinyl seals at the hinge jamb and the strike, a door that closes against the fixed panel, and a shower head aimed away from the door — we hinge the door on the side away from the spray. On any 3/8-inch glass the green tint of standard glass shows at the edge; low-iron glass removes it and is worth specifying with white tile. A hydrophobic coating applied in the shop before delivery is the single most useful upgrade: water beads and runs, and the enclosure stays clear with a squeegee. For the framed-versus-frameless decision see the comparison.
It depends on the glass size, thickness, configuration, hardware finish and whether low-iron glass or coating is specified. We measure and quote rather than publish per-enclosure prices, because the opening decides most of the cost.
Because the hinges carry a 60-to-80-pound door and bolt through the tile into the wall. Without blocking or solid backing the door sags. We ask before quoting and specify a header where there is no backing.
Not in normal use when the sweep and seals are specified and the door is hinged away from the shower head. They are not sealed on every edge like a framed enclosure; a rain head aimed at the glass will find the gap.
3/8 inch is standard and adequate for doors to about 30 inches wide. 1/2 inch for wider doors, taller panels, or a heavier look; it needs heavier hinges and more backing.
With white or pale tile, yes: standard glass shows green at the edge and in the reflection on thick lites. With dark tile the difference is smaller.
Low-Iron vs Starphire Glass for Shower Doors Square vs Round Shower Door Handles 3/8 vs 1/2 Inch Glass Shower Doors Framed vs Frameless Sliding Shower Doors Shower Panels Low-Iron Glass Hydrophobic Coating
About this page. Written by Alex GC Inc. d/b/a Alex Glass Construction and reviewed before publication by Aleksandr Chernovolenko, Managing Partner, with our design and estimating lead and a field foreman. Our foremen hold the NYC DOB Site Safety Training supervisor card and our crews the 40-hour worker card; we are certified to fabricate, install and service Alutech and Everest aluminum systems. Facts are drawn from our own projects, manufacturer test data and the applicable codes; where we are giving an opinion, we say so. Last reviewed September 2026. Credentials
Send a photo of the shower and tell us what is behind the hinge wall. We will confirm the design, measure after tile, and quote.
