So you’re finally ready to give your bathroom the complete remodel it has needed for years. However, after you remove a fixture or tear up the flooring, you notice something strange—expansive dark-colored spots in places that haven’t seen the light of day for years.

If this happens to you, there’s a good chance that you have a mold problem.
What is mold?
Mold is a type of fungus. Though some types of mold are harmless, in some cases mold—particularly the strain known as black mold—can cause potentially serious allergic reactions. In rare instances it can even be fatal. Mold has a way of propagating itself and growing worse and worse over time, so it’s important that you get the problem taken care of as quickly as possible.
Where does mold grow?
Though mold can grow anywhere there’s moisture, it frequently shows up in bathrooms. That’s because mold loves moisture, and the steam from showers and sinks provide the warm, moist environment that mold thrives on.
As you work through your bathroom remodeling project, you’ll want to pay close attention to the surfaces you uncover. Mold can grow behind walls or wallpaper, underneath the floor, on the ceiling, in the bathtub, and pretty much anywhere else you can imagine. Here are some signs of mold growth:
- You find yourself experiencing an allergic reaction (respiratory problems, sneezing, headaches, etc.) while you remodel your bathroom.
- You notice a musty or damp smell as you’re remodeling.
- You find a plumbing leak. If you find pooled water or water stains during the course of your remodel, there’s a good chance you’ve had a plumbing leak—which often leads to mold growth.
- You notice stains, particularly darkish stains, on any surface. Remember that mold can come in a variety of colors (it’s not just green or black.)
What to do about mold
If you notice any of these signs, call a mold removal specialist. They’ll be able to help you determine if you have a mold problem, and they’ll make sure the growth is completely taken care of.
