Causes of Cracks in Bathroom Grout

If you pay close attention to the small details in your bathroom, you’ll likely notice that there are some places where the grout doesn’t look as nice as it used to. More specifically, you will probably find a couple cracks, especially in the joints where the walls meet the floor, tub or shower.

There are several things that cause the grout in bathrooms to crack. From improper installation to advanced age, the potential causes are numerous. Let’s take a closer look of some of the most common culprits and what you can do to repair the damage.

When cracks occur exclusively or primarily in joints, movement between two surfaces is the most likely cause. Even well-built homes constantly shift as the result of temperature changes, humidity, foundation settling and other factors. Since grout is typically made of an inflexible material, cracks develop when one surface moves one way while another moves a different direction.

Improper installation can also result in future cracking. If, for example, the grout is mixed with too much water or too many additives, air pockets could develop while drying. These pockets make the grout weaker and more susceptible to cracking. Cracks also commonly occur when too little adhesive is used to hold the tiles in place.

Repairing Cracked Bathroom Grout

If you only have a couple small cracks, you may be able to repair the damage on your own. First, completely remove the old grout, and vacuum the crack to eliminate dust. Next, choose a replacement that’s less not as likely to crack, such as silicone caulk. Choose caulk that is mildew resistant, and make sure the color matches your existing grout.

When caulking, be sure to follow the instructions carefully. If you aren’t sure of your ability to do the job quickly and neatly, leave it to the professionals. It’s also important to call for help if you suspect an underlying plumbing problem that could be damaging your grout. Even a small leak can cause significant damage. If you think you have a leak or you aren’t sure what’s causing your grout to crack, contact the expert plumbers right here at G.T. Campbell Plumbing.