How to Caulk Baseboards to Tile Floor like a Pro

For houses with brick floors, there are always gaps at the foot of the wall. The house’s openings are places where water and dirt accumulate, creating conditions for mold to grow. Therefore, the cracks in the footwall need to be filled with caulk.

What do you need to caulk baseboards?

Before you start your sealing project, get the following tools first:

  • Caulk (Paintable Ones)
  • Caulking Gun
  • Paint
  • Rubber gloves
  • Bandage
  • Dry rag
  • Putty Knife
  • Machine water
  • Vacuum cleaner
  • Baking Soda
  • Warm water

The best types of caulk to choose

You are wondering what kind of buoy to choose between brick and baseboard? The sealed property of caulk is not the only thing that matters. You also need to consider the flexibility of the caulk to adjust the gaps accordingly.

Different types of caulks have additional flexibility and sealing properties. So you should choose wisely to fill the gaps. The best types of caulks are explained below.

  • Acrylic Caulk

The block forming with acrylic adhesive is relatively more straightforward because it is not sticky. This is why it is one of the most commonly used caulks. It’s also less cluttered to work with.

The acrylic adhesive does not have adhesive properties. But it has a double sealing layer that can be easily applied to the top or bottom edges. It can even be applied on corners!

One downside to using acrylic glue is that it is not waterproof. Therefore, you should not use them in the bathroom or similar places.

  • Caulk silicone

People often use silicone glue instead of rubbing adhesive for its many advantages, such as its toughness and strong adhesion properties.

Silicone is excellent for use on metal and plastic panels with bricks. So for places like bathrooms, it is perfect. However, it is not ideal for wooden baseboards.

  • Latex Caulk

Rubber glue has one advantage that acrylic glue does not have. That is, they are waterproof. Therefore, this caulk helps a lot in preventing water from flowing out of openings.

It is also very versatile, so you won’t have to worry about cracks getting cracked!

  • Adhesives

Caulking-based glue is an excellent option for general caulks. They also serve the purpose of petting quite well. Of course, you can use them at any distance between baseboard and brick.

However, you will need to coat a different type of caulk for the finishing touches.

Implementation steps

Once you’ve selected the correct type of caulk, your job is to take the following steps.

Step 1: Smooth and clean the baseboard area.

This is a crucial step to take before you start applying glue. So to create a clean surface, grab your knife. Shave off all old paint streaks and dirt at the places where you will be applying caulking.

Next, start the cleaning process. For this, clean the dirt you just shaved off with a vacuum cleaner. Then make a cleaning mixture using baking soda and warm water in a 2: 1 ratio. Rinse the areas with the detergent mixture and let dry.

Smooth and clean the baseboard area

Step 2: Paste the tape along the edges of the slot

Take your masking tape and pinpoint the correct icing line. Then, measure the gap between the baseboard and the tile floor is ⅛. Tape opposite sides of the hole to match.

The duct tape will assist you in creating a clean flow of adhesive. This is because any excess adhesive will be removed when you remove the tape.

Step 3: Apply Caulk

Now is the most crucial step. After all the preparation steps, you can now start applying caulk. Take your caulk tube hose and cut a hole in it. Then, squeeze the caulk out of the tube. Drag it along the gaps, the caulk will fill the gaps, and that’s it.

Even when you are done, the caulk line is not smooth. Do not worry! Simply dip your index finger in a bowl of warm water. Then, run it along with the marks you’ve filled in to smooth it out.

Only stop the smoothing process when the caulk line has no bulges. There, the gap between the baseboard and the tile floor is sealed!

Step 4: Observe the area

Even if you have finished filling the caulk to the baseboard and did the sweeping, then you can still detect random holes inside those slots. Your job is to observe so as not to miss them. Next up, nothing too much. You just need to squeeze some extra caulks. Smooth it with your finger like the previous step.

Now you are sure that the random gaps are filled. Then wait for the glue to dry completely. Oversee the area and wait. Finally, slowly remove the tapes you placed earlier.

Step 5: Paint the foundation

Now comes the fun part after all your hard work! So grab your desired paint color and start painting the baseboards!

Some people color the base of the wall to match the wall. Some choose it differently from the wall. So select any color that suits your taste. Just remember to choose something that won’t make the baseboards look weird.

Tips for effectively caulking baseboards

  • When cutting the tip of a new glue tube, you should cut with a knife so that the tube’s end is smaller than the opening’s width. The blade is tilted at an angle of 45⁰, which creates a beveled lot to be quickly injected deep into the corner.
  • Use a dripless glue gun. With conventional guns, after stopping the trigger, a small part of the glue is still pushed out due to the pressure. Excess adhesive causes many inconveniences. This dripless glue gun is spring-mounted, designed to stop the tube’s pressure as soon as you release the trigger. You can set the thrust ratio to 12: 1 for thick materials like epoxy or silicone, or use a 6: 1 setting for materials with a lower viscosity like rubber sealants.
  • Fast execution
  • That means when you inject glue into the slot with a gun, you need to do it quickly and decisively. Your glue line will be cleaner and smoother.

Some frequently asked questions

  • Why does the mortar often crack, but the battery does not?

Mortar is made of composite material. This property makes it unable to withstand pressure. They have low flexibility and often crack. So, between mortar grouts crack and caulk, caulk is preferred.

  • Should we do the caulk first or the baseboard painting?

Painting is recommended last. Before painting, the baseboards should be sanded and primed thoroughly. You should make sure that the baseboards are filled. Then, coat with the polish.

  • Do you cut the bottom hole of the baseboard?

Yes, you should cut the baseboard bottom because dirt accumulates on the bottom the most. So, caulk helps prevent this problem.


In general, filling in wall joints is very simple. As long as you have the necessary tools, you can do it yourself at home without an expert. The steps include: choosing the right type of caulk, cleaning the sealant’s surface, sticking the tape along the gap, inserting the adhesive between the cracks, observing the area, finally painting.

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