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Types of Glass and Mirror: A Visual Guide

Picking glass is about more than thickness. Color, clarity, privacy and safety all depend on the type. Here's what each one is, what it looks like and where it's used.

Smoked glass double entry doors in an office lobby
Smoked glass double entry doors in an office lobby

Clear and low-iron glass

Clear glass

Standard float glass. Very clear face-on, with a green tint you can see on the edges and in thick panels. The everyday choice for shower doors, tabletops and windows.

Low-iron glass (Starphire, Optiwhite, UltraClear)

Glass made with less iron, so it's ultra clear with almost no green. White marble and white tile look truly white behind it. Starphire, Optiwhite and UltraClear are brand names for low-iron glass. Popular for frameless showers, display cases and shelves.

Tinted glass

Bronze glass

A warm brown tint that cuts glare and heat. Used in storefronts, commercial windows, smoked glass doors and furniture.

Gray glass

A neutral smoky tint. Cuts glare and adds privacy without changing colors much. Common in office doors, partitions and modern furniture.

Privacy and decorative glass

Acid-etched (satin) glass

Permanently frosted by acid. Smooth to the touch, lets light through and blocks the view. Easier to keep clean than sandblasted glass. Great for water closet doors, showers and office partitions.

Sandblasted glass

Frosted by blasting sand at the surface. Can be done in patterns, bands or logos. Slightly rougher texture.

Rain and patterned glass

Textured glass that blurs the view. Rain glass has a soft water-drop pattern. A classic choice for shower doors and cabinet doors.

Reeded (fluted) glass

Vertical ribs that blur what's behind. A popular design look for showers, office fronts and cabinet doors.

Back-painted glass

Glass painted on the back in any color. Used for kitchen backsplashes, wall cladding and writable glass boards.

Safety glass

Tempered glass

Heat-treated glass that's about four times stronger than regular glass and breaks into small pebbles instead of sharp shards. Required by code for showers, doors and many windows. It can't be cut or drilled after tempering, so it's made to exact size.

Laminated glass

Two layers of glass bonded with a plastic interlayer. If it breaks, the pieces stay stuck in place. Used for railings, overhead glass, storefront security and sound control.

Insulated glass units (IG units)

Insulated glass unit (IGU)

Two panes of glass sealed around a spacer, often with argon gas inside. This is what's in most modern windows and storefronts. When the seal fails, you see fog between the panes, and the unit needs replacing.

Low-E glass

Glass with a thin, nearly invisible coating that reflects heat. Keeps buildings cooler in summer and warmer in winter. Standard in energy-efficient windows and IG units.

Mirror

Clear (silver) mirror

The standard bathroom and wall mirror. Cut to size with polished or beveled edges.

Low-iron mirror

Mirror made on low-iron glass for a brighter, truer reflection with no green cast. Popular in high-end bathrooms.

Gray mirror

A smoky, darker reflection. A modern design choice for accent walls, furniture and bars.

Bronze mirror

A warm, golden-brown reflection. Used for accent walls, bars and furniture.

Antique mirror

Mirror with a deliberately aged, mottled look. Used on accent walls, dining rooms, bars and furniture. Comes in different levels of veining and speckling.

Safety-backed mirror

Mirror with a film on the back that holds the pieces together if it breaks. Recommended for gyms, dance studios and closet doors.

Questions

FAQ

What's the difference between Starphire and low-iron glass?

Nothing in practice. Starphire is a brand name for low-iron glass, like Optiwhite and UltraClear. All of them remove the green tint of regular clear glass.

Is low-iron glass worth it for a shower?

If your tile is white, light gray or marble, yes. Clear glass adds a green tint you'll notice on the edges. Low-iron keeps colors true.

What glass is best for privacy?

Acid-etched glass is the most popular. It lets light through, blocks the view and cleans easily. Rain, reeded and gray-tinted glass are other options.

Can you match my existing glass?

Usually. Send a photo of the glass and edge, and tell us where it is. We'll match the type, tint and thickness as closely as possible.

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What customers say about Nathan and the team

Homeowners, contractors and builders from New Jersey and beyond.

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Customer service is out of this world, a real breath of fresh air. Quality of work is above industry standard, and prices are competitive. Nathan has my jobs done before the deadline every time I use him. Definitely recommend.
Efraim J. · Google review
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Nathan from Ace Glass was prompt and courteous. I normally work on my projects in Connecticut and had this one project in Jersey. Couldn't be happier with the result. Will definitely be using you guys again!
Chaya W. · Google review
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Professional job on the installation and excellent communication. Got the job done when they said they would. Strongly recommend!
M. Gould · Google review
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Nathan was a pleasure to work with. Communicative, efficient, and well priced. I will be a returning customer.
Dovid J. · Google review
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Had a wonderful experience working with Nate and his team from beginning to end. He walked me through the whole process, was honest and did a professional job.
David · Google review
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Professional, quick, fairly priced, excellent service.
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