If these joints aren’t caulked, water can easily get behind them and into the wall.

Rinse the area and dry it with a clean rag.

Caulk adheres best to a clean surface, so double-check the walls and trim are completely clean and dry.

Man using caulking gun, close-up

Vstock / Getty Images

The lower down on the tube you cut, the larger the opening and resulting caulk bead.

For trim, a 1/4- to 3/8-inch bead is good.

Some caulk tubes have markings on the tip indicating where to cut for various bead sizes.

Person cleaning bath

Image Source / Getty Images

The caulk will be easier to apply if it is slightly warm.

Apply Caulk

Place the applicator tip against the shower surface at a 45-degree angle.

Apply a small, uniform bead of caulk all the way around each part of the shower trim.

Hispanic woman holding caulking gun

Tanya Constantine / Getty Images

It is important to cover the whole seam because water can leak through even the smallest gap.

you’re free to judge for yourself.

What is an Escutcheon?

USA, Texas, Dallas, Man with Caulk Gun working in bathroom

Matt Taylor / Getty Images

Using warm water works best.

The goal is to leave a small, neat bead that still fully covers the gaps around the trim.

How much caulk is wiped away is up to personal preference.

Wiping caulking bead to smooth it out

The Spruce / Aaron Stickley

Some people like to leave fairly large caulk lines, but small, thin beads usually look better.

If youve used squeeze-tube caulk for this project, simply replace the cap to store it.

All caulk should be stored in an upright position.

clean bathtub