how to caulk crown molding on painted walls

How to Caulk Crown Molding on Painted Walls: 11 Simple Steps

You’ve got a beautiful crown molding that you want to caulk, but the problem is your walls are painted.

If you’re not careful, caulking can cause paint to peel off of the wall. This is because the moisture from the caulk will seep into and soak through the paint.

The solution? You need to use masking tape to protect the paint from getting wet. But how do you do that?

In this article, I’ll explain how to caulk crown molding on painted walls so that your finish is beautiful and protected. So let’s dive in.

Materials You Need

  • Caulk
  • Knife
  • Caulk Gun
  • Masking Tape
  • Paintbrush
  • Pencil
  • Ruler or Measuring Tape
  • Safety Glasses
  • Damp Rag
  • Ladder

Steps For How to Caulk Crown Molding on Painted Walls

caulking molding after painting

Step 01: Clean the Surface

Before you begin, make sure your wall paints are dried and the surface is clean as well as free of debris. Use a vacuum cleaner to remove any dust or dirt, and then use a damp rag to clean the surface.

Step 02: Ladder placement

ladder placement

Now that the surface is clean, it’s time to place the ladder. Place the ladder in a position where you can access the ceiling joists. You want to make sure that the ladder is stable and won’t wobble while you’re upon it.

When you’re placing the ladder, make sure it’s near your wet rag and caulk gun.

Step 03: Use The Pencil

Once everything is in place, grab a pencil and ruler or measuring tape and follow the crown moulding to draw straight lines with a straight edge.

If it’s difficult for you to make a perfect line, draw some guidelines that will be easy for you to follow. You can then use your straight edge as a guide when drawing your actual line. Make sure you caulk along this line. This cuts down on waste and ensures that there are no gaps between pieces of molding.

Step 04: Cover Your Paint

Before you start caulking, it’s important to protect your paint. Masking tape is the best way to do this. Start by measuring how much crown molding you’ll be caulking. Then measure how high up on the wall that measurement extends.

Next, cut a piece of masking tape that is slightly larger than your measurements. Stick the tape to the wall, and then align it with your line. This ensures that when you start caulking, there won’t be any paint seeping through to the wall underneath.

Push down on the tape so that it’s secure in place. You can use painters tape if you don’t have masking tape available. Painter’s tape is typically easier to remove than masking tape. However, in this case, masking tape is preferable because it makes sure that paint doesn’t get behind your molding (and into the gap).

Step 05: Prepare your Caulking Gun

Cut the caulk tube with a utility knife so that the caulk comes out and fits the size of your crown molding.

If you’re using a caulking gun, make sure the plunger is all the way down before loading the tube.

To load the tube, push it into the gun until it locks in place. Then release the plunger and pull the gun towards you until the caulk is pulled all the way through.

Now that everything’s ready, it’s time to start caulking!

do you caulk crown molding

Step 06: Caulk it Up

Apply caulking to the wall where the crown molding meets it. Make sure to press down on the caulking so that it sticks well to the wall and the molding.

Caulking in a downward motion is the best method. However, you can also work from left to right over the crown molding. Just make sure not to go back and forth too much, or else you’ll be pushing down more air into the tube than actual caulk.

Step 07: Go after other Gaps

If you have any other gaps between the molding and the wall, use a toothpick, Q-tip, or your finger to apply caulk or drywall mud into those spaces as well.

Don’t forget about the back of your crown molding! You want to make sure there’s a nice, even line around all sides so that it looks as beautiful from behind as it does from the front.

Step 08: Smooth Out the Caulk

Use a paintbrush or putty knife to smooth finish the caulking so that it’s even and consistent with the surrounding area.

You’ll know you’ve done it right if there are no ridges, bumps, or lumps. This ensures that the caulk adheres well to the molding and wall.

Step 09: Wipe Away Excess Caulk

Once you’ve cleaned up any excess caulking, make sure to wipe your paintbrush with a damp rag before cleaning off the excess from around your crown molding. This ensures that you’re not smearing the excess caulk all-around your molding.

Step 10: Give it Time to Dry

Before you add another piece of crown molding, let this piece dry for at least half an hour so that everything sticks together nicely.

This waiting period is important because it gives your latex caulk or wood filler time to adhere properly while drying out thoroughly. Otherwise, there might be dripping and other problems.

Once you’ve given it enough time to dry, move on to the next piece of crown molding. Repeat this process until all your moldings are caulked to perfection!

Step 11: Paint the Caulk

Once the caulk is dry, you can paint it to match the color of your wall. You can also paint trim if you wish to change its color. Allow the wall paint to dry completely before moving on. This method is optional, but it will help to conceal the caulking and make it blend in more seamlessly. Make sure to use premium quality paint so that it will last.


Here are some frequently asked questions about caulk crown molding.

caulking crown molding

Do you caulk crown molding before or after painting?

It’s best to caulk existing crown molding before painting. This way, you don’t have to worry about getting paint on your caulking or vice versa.

Can I use a regular caulking gun for this project?

Yes, you can use a regular caulking gun for this project. However, make sure the plunger is all the way down before loading the tube and that you’re applying caulking in a downward motion.

How long does it take for caulk to dry?

It depends on what kind of caulk you’re using and how thickly you applied it. Most caulks will take at least an hour to dry completely.

How do you get perfect caulking lines?

You can easily get perfect lines by applying the caulking with a paintbrush and then smoothing it out with your fingers. Just remember to wipe away any excess before it dries!

Is it necessary to paint over caulk?

No, it’s not necessary, but it can help to conceal any inconsistencies and make everything look neater. Plus, it’ll help your caulk last longer. Just make sure to use high-quality paint that is specially made for caulking.

Last Words

Caulking is a simple way to finish off your crown molding, and with these simple steps above, you’ll be able to do it without any fuss! Filling nail holes and painting baseboards can also be done following this guide.

Now that you have learned to caulk crown molding on painted walls, and you can apply this knowledge to the rest of your molding, whether you have it in your bedroom, bathroom, living room, etc.

Just follow these easy steps and you’ll be good to go. So if your walls get painted, and the caulk wears off the first time, just follow this how-to guide, and you’ll be able to caulk crown molding like a pro!

Recommended Article To Read:

Leave a Comment

Your email address will not be published. Required fields are marked *