Don't Make These Mistakes When Caulking Your Bathroom

There are three tasks that every homeowner knows they'll need to tackle — deciding when to replace the roof, getting a new HVAC system, and recaulking the bathroom. Because bathrooms are exposed to so much moisture, it's important to regularly properly caulk it at least every five years (more if your bathtub or shower are used often) to prevent water damage. While it looks simple, caulking a bathroom can be tricky, especially for a first-timer. 

Aside from navigating the odd angles — learning to use a caulking gun is no easy feat — there are many potential missteps homeowners can make, from cutting the caulk tube's tip too big to forgetting to smooth the bead to using the bathroom before the caulk has fully dried. While these might seem minor, mistakes like this can prevent the sealant from adhering properly, allowing moisture to gather in your bathroom's nooks and crannies. This can lead to mold and rot making an unwanted appearance in your bathroom.

Before you get started, properly prep the area. Caulk needs clean surfaces to stick, so wipe down areas you plan to caulk with rubbing alcohol and dry. Then, remove old caulk with a razor blade or scraper to ensure proper adhesion, and line your work area with painter's tape — it's crucial to getting clean caulk lines.

One of the biggest mistakes beginners make while caulking the bathroom is cutting the tip improperly. Make the cut at a 45-degree angle so it's just smaller than the area you want to seal to get a professional-looking line. While applying, resist the urge to go fast, keeping steady pressure as you pull the caulk line towards you. Don't forget to press down on the caulk line while wet to make sure it gets into the gap and fully seals it. Add a few drops of denatured alcohol, your secret weapon to caulking your bathroom like a pro, to your finger before smoothing out the bead. Finally, remove the painter's tape right away for a professional finish. 

Once your job is complete, make sure to let the caulk dry completely. Most caulk takes at least 24 hours to cure, so check the instructions on your tube. Any moisture in the room, from washing your hands to condensation from the shower, can ruin your hard work, so skip using that bathroom for at least one full day.