Outdoor Shower Surfaces: MSI Arctic White Quartz, Milk Glass Tile, and What They Actually Cost

Full disclosure: I manage purchasing for a 34-person construction company, and I've been tracking our material invoices for six years. That's roughly $180,000 in surfacing materials alone. It's also how I know the question of which surface to use for an outdoor shower is never just a material question. It's a cost question.

And just to clarify: this article is about MSI International Surfaces, the stone and tile company, not the computer hardware brand. MSI comes up a lot when we spec quartz, tile, or natural stone. People ask about MSI Arctic White Quartz, about milk glass tile, and about what an outdoor shower should cost. The honest answer is: it depends. There is no universal "best" surface.

For outdoor showers, I split projects into three rough buckets:

• Rental or flip projects where the surface has to survive a few years of heavy use without creating callbacks.
• Single-family backyard showers where the owner is going to live with the choice for a decade.
• Client-facing hospitality or custom builds where the shower is part of the brand experience.

Why do I split it this way? Because the maintenance expectations and business consequences are different. A shower in a rental is an operating cost. A shower in a boutique hotel is a marketing expense.

From the outside, picking a surface looks like a simple material plus labor equation. The reality is messier. The real cost includes waterproofing, substrate prep, grout lines, cleaning, and how long before the surface starts to look tired. That's why the same material can be a smart buy for one project and a mistake for another.

Scenario 1: The rental or Airbnb flip

If this is a rental or a flip, the goal is boring: make it waterproof, slip-resistant, and easy to clean. I usually steer people toward large-format porcelain tile. MSI's tile line has enough colors and textures to make a plain shower look intentional without forcing you into a high-maintenance product.

Here is where I'll sound like I'm contradicting myself: I would not choose the absolute cheapest tile. People assume the cheapest 2x2 mosaic is the smart rental play. It isn't. A mosaic floor has grout lines everywhere, and grout lines are where soap scum, mildew, and tenant complaints live. A larger porcelain plank, like a 12x24, has far fewer grout lines. It costs a little more, but it reduces callbacks. That's a better total cost of ownership.

What about milk glass tile? It looks great in a showroom, but for a rental I'd hold off. Glass tile is installation-sensitive, and a tenant is not going to treat it carefully. For the same money, I'd rather upgrade the waterproofing membrane and keep the wall tile simple.

Would I spec MSI Arctic White Quartz here? No. Not because it's a bad product. Because it's overkill. A renter won't notice it, and you won't get the money back at resale. Budget says no.

Scenario 2: The single-family backyard shower

For a family's own backyard shower, the priorities shift. The owner has to live with it for a decade, so the surface has to work and feel good underfoot.

On the floor, I like textured porcelain or slate. MSI carries slate tile that brings natural variation without looking like a public pool deck. The texture gives you grip, which matters when there is soap and wet skin involved. And no, not all stone is slippery. Some polished stone is. A textured slate is not the same as a polished marble.

For the walls, milk glass tile is a strong candidate. The soft, glossy finish makes a small outdoor shower feel bigger and brighter. In my experience, it also cleans up faster than a rough natural stone wall. The catch is installation: glass tile needs a flat substrate and a skilled installer. If the wall is out of square, the glass will show every flaw. So if you choose milk glass, choose the installer carefully.

This is also where a quartz bench makes sense. MSI Arctic White Quartz is an engineered stone, which means it doesn't have the same sealing schedule as many natural stones. That's not a judgment about natural stone. It's a tradeoff, and for a shower bench it's usually the right tradeoff.

But don't fall for the "maintenance-free" line. No surface is zero maintenance. Per Federal Trade Commission advertising guidelines (ftc.gov), product claims need to be truthful and substantiated, and I hold material claims to the same standard. Quartz is easy to clean, but it is not indestructible. Prolonged direct UV exposure can affect some quartz over time. If the shower is fully exposed to the afternoon sun, ask your MSI rep about UV-stable options or look at natural stone. If the bench is under a covered roof, Arctic White is a solid choice.

Scenario 3: The client-facing hospitality or high-end residential project

When the shower is in a boutique hotel or a custom home where the client will entertain, the rules change again. The surface is part of the brand experience, and the brand experience is part of what they are paying for.

In that context, I'm willing to spend on visible materials. I approved an MSI package for a property that had a porcelain floor, a milk glass accent wall, and an Arctic White Quartz bench. It was not the lowest bid. I'll be honest: after I sent the purchase order, I kept second-guessing myself. What if a cheaper porcelain would have looked basically the same? The two weeks until the final walkthrough were stressful.

Then a guest walked in and asked where the bench came from. That was the moment I relaxed. The client saw the difference, and they brought it up in the project review without any prompting from me. To me, that is the real return on investment.

Quality is brand. If a surface feels cheap, the client doesn't blame the tile. They blame the contractor.

That's why I tell contractors to think about quality perception before choosing budget materials in client-facing projects. The direct cost difference between a basic porcelain package and a curated MSI package might be a few thousand dollars on a project worth several hundred thousand. That's a small price to protect the relationship and the next referral.

So, how much does an outdoor shower cost?

I can't give you one universal number, because materials pricing varies by region and changes over time. As of Q1 2025, in my area, the relative cost spread looks like this:

• Large-format porcelain tile is the budget-friendly workhorse.
• Milk glass tile costs more, and installation costs more because glass is pickier.
• MSI Arctic White Quartz is the premium option for benches and vanities. Materials can run several times higher than porcelain.

Don't hold me to exact regional prices. The right move is to visit an MSI showroom or use their online product pages to get current quotes in your area. What matters more than the initial price is the total cost over time. A cheap mosaic floor with excessive grout lines can turn into cleaning callbacks and a bad online review. A quartz bench that costs a few hundred dollars extra can help win the project review and the next contract.

People assume the higher price on a product like Arctic White Quartz is just brand markup. In my experience, it's usually the other way: the materials that hold up better can charge more. The price is a consequence of quality, not the cause of it.

How to tell which scenario you're in

If you're still not sure, ask yourself three questions:

1. Who is using this? Renters, the homeowner, or paying guests?
2. How long does it need to look good? Three years, ten years, or as long as the brand name is on the door?
3. What happens if it looks bad in year two? A nuisance, a frustration, or a lost client?

If it's renters and three years, skip the quartz. Spend on a good waterproofing system and a large-format tile that's easy to clean. If it's a family and ten years, spend on the bench and the floor, and keep the wall treatment reasonable. If it's guests and brand, then yes, MSI Arctic White Quartz and milk glass tile are worth the cost.

There is no universal answer. Anyone who claims there is either hasn't built enough outdoor showers or is trying to sell you what's already in their warehouse.