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Home/Glass Types/Mirror Glass
95% Silver Reflectivity

Mirror Glass
Custom Fabrication

Float glass with a silver or aluminum reflective coating, custom-cut and fabricated for bathrooms, gyms, closets, and commercial installations across the DMV. From vanity mirrors to full wall installations.

Get Free Estimate (703) 679-7741
Mirror Cross-Section -- How Reflection WorksGLASS1/4 inch (6mm)SilverCuPaintLight InReflectedMirror LayersFloat GlassSilver CoatingCopper LayerPaint BackingSilver: 95% reflectivityAluminum: 85% reflectivityLight enters glass, reflects off silver, exits glassCopper and paint protect the silver from oxidation
What Is Mirror Glass?

How Mirrors Work -- The Science of Reflection

A mirror is simply a sheet of flat glass with a thin metallic coating on one side. Light passes through the glass, hits the reflective metal layer, and bounces back out through the glass. The flatness of modern float glass makes the reflection sharp and distortion-free.

The most common mirror coating is silver. In the silvering process, a thin layer of pure silver is chemically deposited onto the clean glass surface. Silver provides approximately 95% reflectivity across the visible spectrum, giving the most accurate color reproduction. A copper layer is then applied over the silver to protect it from corrosion, followed by one or two coats of protective paint.

Aluminum-coated mirrors are the alternative to silver. Aluminum is deposited through a vacuum evaporation process and provides approximately 85% reflectivity. While less reflective than silver, aluminum is naturally more resistant to corrosion and oxidation, making it better suited for humid environments and outdoor applications.

The quality of the base glass matters. Standard float glass has a slight green tint from iron oxide, which subtly affects the reflected color. Low-iron (ultra-clear) glass eliminates this tint, producing a mirror with truer color reproduction -- particularly noticeable in large mirrors and in applications where color accuracy matters, such as makeup stations, retail displays, and photography studios.

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95%
Silver Reflectivity
85%
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Any Size or Shape
1/4"
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Manufacturing Process

How Mirror Glass Is Made

The silvering process deposits a thin reflective layer onto clean float glass, then protects it with copper and paint.

1. Glass Preparation

Float glass is thoroughly cleaned to remove all contaminants -- dust, oils, and residues. The glass passes through a series of washing and rinsing stations. Any impurity on the surface will cause defects in the silver coating, so cleanliness is critical.

2. Silver Deposition

A solution of silver nitrate is sprayed onto the clean glass surface along with a reducing agent. The chemical reaction deposits a thin, uniform layer of pure metallic silver directly onto the glass. The silver layer is only about 0.8 micrometers thick but provides 95% reflectivity.

3. Copper Protection

A thin layer of copper is deposited over the silver. Copper protects the silver from chemical attack and oxidation. Without copper, the silver would corrode quickly -- especially in humid environments like bathrooms. This is the layer that fails when mirrors develop black spots.

4. Paint Backing

One or two coats of protective paint are applied over the copper layer and cured. The paint provides mechanical protection and serves as a final moisture barrier. High-quality mirrors use lead-free, environmentally compliant paint formulations.

Benefits

Benefits of Mirror Glass

Space Enhancement

Strategically placed mirrors make rooms appear larger, brighter, and more open. A wall of mirrors can visually double the perceived size of a room -- a technique used in restaurants, retail stores, and small apartments throughout the DMV.

Light Amplification

Mirrors reflect natural and artificial light deeper into interior spaces. A mirror opposite a window can significantly improve illumination in dark rooms without additional electrical lighting.

True Reflection Quality

Modern silver-coated mirrors on float glass provide distortion-free, true-color reflection. Low-iron glass bases eliminate the green tint for the most accurate color reproduction available.

Custom Fabrication

Mirrors can be cut to any size, edged with bevels or polished edges, drilled for mounting hardware, and shaped to fit any space. We fabricate custom mirrors in our shop for exact-fit installations.

Safety Options

Safety-backed mirrors with vinyl film hold glass fragments in place if broken. Tempered mirror glass provides additional impact resistance for high-traffic areas like gyms and dance studios.

Decorative Versatility

Beyond standard silver mirrors, we offer antique mirror (distressed finish), tinted mirrors (gray, bronze), and colored mirror glass for decorative wall installations and interior design features.

Applications

Where We Install Mirrors in the DMV

Bathroom Vanity Mirrors

Custom-cut mirrors for bathroom vanities, medicine cabinets, and full-wall installations above double sinks. We measure, fabricate, and install with clips, channels, or adhesive.

Gym & Fitness Mirrors

Floor-to-ceiling mirror walls for home gyms, yoga studios, dance studios, and commercial fitness centers. Safety-backed glass is recommended for all gym installations.

Closet & Wardrobe Mirrors

Full-length mirrors for walk-in closets, sliding closet doors, and dressing areas. We install framed, frameless, and door-mounted mirrors to fit any closet configuration.

Decorative Wall Mirrors

Statement mirrors for living rooms, dining rooms, entryways, and hallways. Custom shapes, beveled edges, and specialty finishes (antique, tinted) for interior design projects.

Commercial Installations

Retail store mirrors, restaurant mirrors, hotel lobby mirrors, and salon stations. Large-format installations with safety backing for public spaces across the DC metro area.

Specialty Mirrors

One-way observation mirrors, magnifying mirrors, heated anti-fog mirrors, and LED-backlit mirrors for residential and commercial applications.

FAQ

Mirror Glass -- Frequently Asked Questions

What causes black spots on mirrors?

Black spots (called mirror rot or desilvering) occur when moisture penetrates the edge seals and attacks the silver or aluminum reflective coating on the back of the glass. The coating oxidizes, creating dark patches that grow over time. Common causes include bathroom humidity, water splashing on mirror edges, and aging edge seals. There is no repair for desilvered areas -- the mirror must be replaced. We can replace individual mirrors or entire walls of mirrors.

What is the difference between silver and aluminum mirror coatings?

Silver-coated mirrors offer the highest reflectivity at approximately 95%, producing the truest color reproduction. They are the standard for bathroom and decorative mirrors. Aluminum-coated mirrors have about 85% reflectivity and a slightly cooler tone, but they are more resistant to corrosion and less expensive. Aluminum mirrors are often used in commercial, industrial, and outdoor applications where durability matters more than perfect color accuracy.

Can mirrors be cut to custom sizes?

Yes. We cut mirrors to any rectangular, square, or straight-line shape in our shop. Beveled edges, polished edges, and holes for mounting hardware are all standard fabrication options. For curved or irregular shapes, we use specialized CNC cutting equipment. We measure on-site and custom-fabricate mirrors for bathroom vanities, wall installations, closet doors, and any other application.

Should bathroom mirrors be safety-backed?

Building codes do not typically require safety mirrors in bathrooms unless the mirror is within 18 inches of the floor or in a location subject to human impact. However, safety-backed mirrors (with a vinyl film applied to the back) are recommended for any installation where breakage could cause injury. If the mirror breaks, the film holds the fragments in place rather than letting sharp shards fall. For gym mirrors and large wall mirrors, safety backing is strongly recommended.

How thick should a wall mirror be?

Standard bathroom vanity mirrors are 1/4 inch (6mm) thick. This is adequate for mirrors up to about 4 feet in any dimension when properly mounted. Larger wall mirrors and full-length mirrors should be 3/8 inch (10mm) to prevent flexing, which causes visual distortion. Gym mirrors and large commercial installations typically use 1/4 inch mirrors mounted with clips or adhesive on flat, smooth walls to avoid distortion from wall irregularities.

What is one-way mirror glass?

One-way mirror glass (also called observation glass or two-way mirror) has a much thinner reflective coating than a standard mirror. When the room on one side is brightly lit and the other side is dark, the bright side sees a mirror reflection while the dark side can see through. It requires a significant light level difference (at least 8:1 ratio) to function. Common uses include security observation rooms, interview rooms, and theatrical applications. We install one-way mirror glass for commercial and institutional applications in the DMV.

Related Glass Types

Float Glass

The base glass used to make mirrors

Low-Iron Glass

Ultra-clear base for the truest mirror reflection

Tempered Glass

Safety glass for gym and large-format mirrors

Frosted Glass

Frosted mirrors for decorative applications

Decorative Glass

Antique mirror and specialty mirror finishes

Privacy Glass

One-way mirror and switchable privacy glass

Savings & Discounts

Current SpecialsMilitary & First Responder DiscountSenior DiscountReferral ProgramWhy Choose UsSpecials

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Explore More Glass Types

Mirror Installation

Full-service mirror installation for any space

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Frosted Glass

Acid-etched and sandblasted privacy glass

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Custom Glass Cutting

Precision-cut glass to your exact specifications

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Get a Free Estimate for Mirror Glass

Bathroom mirrors, gym walls, closet doors, or custom installations -- we provide free estimates for all mirror projects across DC, Maryland, and Northern Virginia.

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