Designers and homeowners spec'ing a custom shower face a glass-type decision before hardware or door style is on the table: clear, low-iron, frosted, or textured. Each glass type has a distinct visual, privacy, and maintenance profile, and the right call depends on the room and the design intent. Shower door glass comes in four primary types: clear (standard float), low-iron (ultra-clear, no green tint), frosted (privacy via etching or sandblast), and textured (cast-pattern decorative). This guide covers all four, the seven textured patterns Moffat carries (Reeded, Fluted, Rain, Hammered, Cathedral, Seedy, Aquatex), and a decision framework for the spec. Since 1921, Moffat Glass has cut, tempered, and finished shower glass in our Northern Colorado shop, and each of these four glass types sits inside our standard fabrication scope.
Clear glass is standard tempered float glass: the most common shower glass type, used in most residential frameless and semi-frameless enclosures. It is the spec-default unless the design intent calls for something else.
Visually, clear glass is highly transparent with a subtle green cast caused by iron-oxide content in standard float glass. The green tint is barely perceptible at 3/8" thickness; it becomes more visible at 1/2" or when the panel is viewed at its edge. For most residential showers, where the design intent is "see the tile, see the bathroom, no distraction from the glass," clear is the right choice. It works with any hardware finish, any tile palette, and any room scale.
Like all shower glass, clear panels need squeegee discipline after every use to prevent hard-water mineral buildup. Northern Colorado's water is mineral-heavy, and this is a meaningful maintenance commitment regardless of which glass type the room calls for.
For a modern minimalist bath with white subway tile and matte black hardware, clear glass keeps the focus on the tile and finish rather than the glass itself: the spec-default, for good reason.
Low-iron glass, sometimes called ultra-clear, is shower glass manufactured with reduced iron-oxide content, eliminating the faint green tint visible in standard clear glass. The result is true color fidelity through the glass.
The mechanism is straightforward. Standard float glass carries trace iron oxide from its manufacturing process, which gives clear glass its subtle green cast. Low-iron glass uses a reduced-iron formulation that drops the tint to near-zero. The clarity difference shows up most at the panel edge, where green is concentrated in standard glass, and against light or pale finishes.
For luxury bathrooms with white marble, neutral stone, or any color fidelity-driven design intent, low-iron is the spec upgrade designers reach for. Most Moffat custom showers are 3/8" or 1/2" clear; designers spec low-iron when the brief leaves no room for the green cast to shift the palette.
For a master bath with white Calacatta marble and brushed nickel hardware, low-iron reads as truly invisible. The green cast of standard glass would shift the marble's tone enough for a discerning eye to read it.
Maintenance is identical to clear glass: squeegee after use and a mild, non-abrasive cleaner. The clarity advantage holds for the life of the panel.
Frosted glass is shower glass with one face treated to scatter light, creating privacy while preserving light transmission. Two methods produce the frosted effect: sandblast frosting (mechanically abraded) and acid-etched frosting (chemically smoothed and textured).
The two finishes are not interchangeable. Sandblast is the more textured, slightly coarser finish: the surface feels rougher and reads as "frosty." Acid-etched is the smoother, more refined finish: it stays cleaner over time and reads as "softly diffused." Acid-etched is the designer-preferred finish for premium-tier work.
Frost can be applied full-panel for maximum privacy, partial-panel (frosted band at the lower section with clear above), or as a custom motif (logo, decorative pattern, gradient). Full-panel frost is common on bathroom side panels and partition walls; partial-panel is common on shower doors themselves.
Frosted glass is the right call for bathrooms shared between partners, master baths with shower windows facing the room, powder-room partitions, and any application where privacy outweighs the see-through aesthetic.
For a guest bath where the partition sits beside an open vanity, a full-panel acid-etched frost preserves natural light from the shower window while screening the enclosure. Frosted glass is more forgiving than clear on water spotting but can hold soap scum if neglected, so squeegee discipline still matters.
Textured glass, sometimes called patterned glass, is shower glass cast with a three-dimensional surface pattern during manufacture. The texture adds visual depth, diffuses light, and provides partial privacy without the full opacity of frosted glass.
The design rationale: texture adds visual interest where clear glass treats the enclosure as a transparent membrane. For design-forward bathrooms where the shower reads as a focal element, textured glass is the spec move.
Moffat carries seven textured patterns, locked to the catalog used across our custom shower work:
Across the catalog, Rain offers the most privacy; Seedy and Aquatex offer the least. Most patterns sit at medium privacy, with the difference being aesthetic rather than opacity. Textured glass diffuses light rather than blocking it, so natural light still reaches the shower interior, softened rather than direct.
For a contemporary primary bath with white plaster walls and brushed nickel fixtures, reeded glass on the partition adds vertical rhythm to the room without committing to privacy frost. All seven patterns can be tempered to ANSI Z97.1 and CPSC 16 CFR 1201 Cat. II, the safety-glazing standards required by code on shower glass.
The right glass-type choice for any custom shower comes down to four axes: privacy, clarity, aesthetic, and maintenance. Each glass type lands differently on each axis.
Privacy. Frosted (full opacity) at the high end, textured patterns at medium, clear and low-iron at the low end. Choose by how much of the shower interior should be visible from outside.
Clarity. Low-iron (true clear) at the high end, clear (subtle green) close behind; frosted and textured patterns intentionally diffuse light. Choose by how color-accurate the through-glass view needs to be.
Aesthetic. Clear and low-iron read as minimalist; frosted reads as soft and diffused; textured patterns each carry a distinct design language (contemporary reeded, traditional hammered, vintage seedy). Choose by the room's design direction.
Maintenance. All four types need squeegee discipline in Northern Colorado's hard water. Clear and low-iron show water spotting most clearly; frosted forgives spotting visually but holds soap scum; textured patterns hide water spots in the texture but accumulate buildup in the recesses. Choose by realistic care commitment.
Because Moffat handles in-house tempering of all four glass types and all seven textured patterns at our Northern Colorado shop, the spec is not constrained by what a supplier happens to stock. Most spec decisions get made during the on-site measure consult, where we walk through the framework against the actual room.
What is the most popular glass type for shower doors?
Clear tempered glass is the most popular shower glass and the spec-default on most residential frameless and semi-frameless enclosures, typically 3/8" or 1/2" tempered to ANSI Z97.1 and CPSC 16 CFR 1201 Cat. II. Designers spec low-iron for color-accurate clarity, frosted for privacy, or textured for design-forward rooms. Spec your glass during the on-site measure.
What is low-iron glass and is it worth the upgrade?
Low-iron glass is shower glass manufactured with reduced iron-oxide content, eliminating the green tint visible in standard clear glass. Standard float glass carries trace iron oxide that casts a subtle green at the panel edge and against pale finishes; low-iron drops iron to near-zero, restoring true color fidelity. It is worth the upgrade when the design depends on color accuracy: white marble, pale stone, or light-tile bathrooms where the green cast would shift the intended tone. Spec low-iron during the on-site measure consult.
What is the difference between frosted and acid-etched glass?
Both treat shower glass to scatter light for privacy, but the method differs. Sandblast frosting is mechanically abraded, leaving a rougher surface that can show residue over time; acid-etched is chemically smoothed and textured, leaving a finer surface that stays cleaner. Acid-etched is the designer-preferred finish for premium work. Spec during the design consultation.
Which textured glass pattern offers the most privacy?
Across Moffat's seven-pattern catalog (Reeded, Fluted, Rain, Hammered, Cathedral, Seedy, Aquatex), Rain glass offers the most privacy; Seedy and Aquatex offer the least. Most patterns sit at medium privacy, and the difference is aesthetic rather than opacity. For full opacity, frosted is the right call. Spec your pattern during the design consultation.
Can any of these glass types be tempered for shower use?
Yes. All four glass types and all seven textured patterns can be tempered to ANSI Z97.1 and CPSC 16 CFR 1201 Cat. II, the safety-glazing standards required by code on shower glass. Moffat tempers all four types in-shop in Northern Colorado, so the spec is not limited by supplier stock. Request a design consultation.
Clear, low-iron, frosted, and textured glass each carry their own visual, privacy, and aesthetic profile, and the right choice depends on the room and the design intent. Since 1921, Moffat Glass has cut, tempered, and finished every glass type in our Northern Colorado shop, working directly with designers and homeowners during the on-site measure to spec the glass, pattern, and edge work against the actual room. Our team supports Evans, Loveland, and Fort Collins, plus the wider Larimer and Weld County area, on every custom shower project we take on.
Schedule a Design Consultation or Call to walk through the spec with our team.
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