Remodeling your shower can feel like the kind of weekend project you can tackle with a bit of grit, some YouTube tutorials, and a trip to the hardware store. And for some homeowners, small updates—like swapping out a showerhead or re-caulking tile—can absolutely be DIY-friendly.

But there’s a fine line between refreshing your shower and tearing into a full-blown remodel that’s best left to a professional. Knowing where that line is can save you time, stress, and a whole lot of money in the long run. So how do you know when it’s time to call in the pros?

Here are some clear signs that your shower remodel needs more than just a wrench and a dream.*

1. You’re Moving or Altering Plumbing

If your remodel plan involves shifting the location of the shower, installing new pipes, or changing water lines, that’s your cue to bring in a licensed plumber or general contractor. Plumbing work is one of those things that looks simple on the surface but can quickly turn into a nightmare if done incorrectly—think leaks behind walls, poor water pressure, or even mold from hidden moisture.

Not only is professional plumbing safer and more reliable, but it’s also usually required by building codes. Most municipalities require permits for major plumbing alterations, and a pro will know how to navigate those regulations without leaving you exposed to fines or future inspection issues.

2. You’re Dealing With Water Damage or Mold

If your existing shower has water stains, soft drywall, black spotting, or that musty smell that just won’t go away, there’s a good chance mold or water damage is lurking beneath the surface. These aren’t just cosmetic issues—they’re structural and potentially health-related problems that require a careful, professional touch.

A contractor experienced in bathroom remodels will know how to identify the extent of water damage, remove compromised materials safely, and replace them with mold-resistant and properly sealed components. They’ll also make sure that the root cause—whether it’s a leaky pipe or a bad waterproofing job—is fixed before any new tile goes up.

3. You Want a Custom Shower or High-End Finish

If your vision includes frameless glass, floor-to-ceiling tile, custom stonework, steam features, or intricate built-in shelving, you’re stepping into the kind of craftsmanship that requires specialized tools, experience, and a keen eye for detail.

DIY attempts at high-end finishes often result in uneven tile, leaky seams, or poorly aligned fixtures. Worse, if you’re working with expensive materials like marble or quartz, one wrong cut can cost you hundreds of dollars.

Professional remodelers have the tools to handle precise installations and the experience to ensure everything comes out level, sealed, and showroom-ready.

4. You’re Unsure About Waterproofing or Drainage

A shower that looks beautiful but doesn’t drain properly—or lets water seep behind walls—is a ticking time bomb. Waterproofing is one of the most critical elements of any shower remodel, and it’s often where DIY projects go wrong.

Professionals use proven systems for waterproofing and drainage, and they know how to slope the shower floor correctly so water doesn’t pool or leak into subflooring. If you’re not 100% confident in your waterproofing knowledge, hiring a pro is the safest route.