Frosted Plexiglass: What To Know

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Plexiglass is a brand name for a type of transparent thermoplastic material known as polymethyl methacrylate (PMMA), which is also known as acrylic glass. It’s typically very transparent — just like regular glass — but it can also be frosted to create a particular aesthetic or function .

Plexiglass can be frosted using sandblasting, chemical etching, abrasive pads, or frosting spray. Frosting spray is the cheapest method while sandblasting is the most expensive. When cleaning frosted plexiglass, make sure you don’t use any abrasive materials or substances.

Let’s take a closer look at frosted plexiglass, including how it’s done and a step-by-step to cleaning frosted plexiglass without damaging it.

Can Plexiglass Be Frosted?

Blank plastic transparent business cards mock up

Yes, there are a variety of ways to frost plexiglass. They include sandblasting, chemical etching, abrasive pads, and frosting spray.

The best method will depend on the desired effect and texture of the frosted glass — as well as the resources and budget available. 

Frosting plexiglass is a great way to create additional privacy for windows while still allowing plenty of light through.

How Do You Frost Plexiglass?

These are the most common techniques for frosting plexiglass:

  • Sandblasting: This is a process where fine grains of sand are blasted at high pressure onto the surface of the plexiglass. This creates a frosted effect by gently scratching the surface.
  • Chemical Etching: A chemical is applied to the surface of the plexiglass, which creates a frosted effect by eating away at the surface.
  • Abrasive Pads: Abrasive pads (on Amazon) can be used to scuff up the surface of the plexiglass, creating a frosted effect. Sandpaper (also on Amazon) can work in a similar manner.
  • Frosting Spray: There are sprays specifically designed for frosting plexiglass, such as this Rust-Oleum spray (on Amazon). The spray creates a frosted effect by depositing a thin layer of material on the surface.

How Do You Clean Frosted Plexiglass?

The most important thing to remember when cleaning frosted plexiglass is that you need to be very gentle; otherwise, you can easily scratch the surface and damage the glass. Here’s a step-by-step guide on how to clean frosted plexiglass.

1. Wipe Away Dirt

Use a soft cloth or microfiber towel (which you can buy on Amazon) to remove any loose dirt or dust from the surface of the plexiglass. Make sure not to put any cleaning substances on the surface of the cloth or towel just yet.

2. Wash the Glass

Mix a mild soap or dishwashing detergent with warm water in a bucket or sink, then dip a soft cloth or sponge into the soapy water and wring it out to remove any excess water. Gently wipe the frosted plexiglass surface with the soapy cloth or sponge, being careful not to scrub too hard.

You should also ensure you don’t use any abrasive materials.

3. Rinse

Rinse the plexiglass surface with clean water to remove any soap residue. Make sure it’s all gone, as the soap residue could leave spots if left for too long.

4. Dry the Glass

Dry the frosted plexiglass with a clean microfiber towel to prevent water spots.

If there are particularly stubborn marks, you can repeat the process and use a touch of vinegar in your cleaning solution, but you shouldn’t put undiluted vinegar on the glass or it could cause staining or other damage.

Is It Expensive to Frost Plexiglass?

People behind frosted glass

How much it costs to frost plexiglass will depend on the method you’re using and how much plexiglass you need to frost. Frosting spray is generally the least expensive and easiest option. You can simply buy the spray online or at your local hardware store and then use it to frost your plexiglass straight away.

Frosted window film and abrasive pads are other options that can be relatively cheap and straightforward.

Chemical etching can be more costly, and it’s usually done by a professional. You can expect to pay around $8 per square foot of plexiglass.

The most expensive method, however, is sandblasting, which can go up to $15 per square foot. Of course, the exact price depends on the professional doing it for you — or if you have the equipment and choose to go ahead and do it yourself.

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