There are a few methods for doing this.
Tool to remove caulk around tub.
Create a perfect looking seal on any edge joint or corner every time while reducing wasted caulk and sealant.
Squeeze chemical remover onto the old caulk bead so it is covered completely.
Allow caulk to soften.
Rake remaining chunks of caulk from the joint using the hook end of a painter s five in one tool or a sharp putty knife.
When doing this you should be extremely careful so as not to scratch the surfaces especially for an acrylic bathtub.
Step 3 apply denatured alcohol or mineral spirit to the surface and scrub using a scrub pad.
No wasted caulk silicone or grout.
Then kill any mold or mildew with a mixture of 1 3 cup bleach to 1 gallon of water.
The caulk remover works by destroying the bond between the caulk and the tub or tile so that instead of chipping at the caulk with a razor blade you just pull away big chunks of it with a putty knife.
Using a small putty knife toothbrush and or the hook end of a 5 in 1 painter s tool see picture below scrape any remaining bits of caulk lose this step too requires a bit of patience.
The final preparation step is to clean the surface and remove mildew.
Clean the surface using alcohol.
In these cases you ll have to physically remove the caulk.
Use a razor to cut through the silicone caulk and scrape it off as much as you can.
Apply chemical caulk remover.
You can use a utility knife or putty knife slicing through the caulk and peeling it away.
There are also specialized caulk removal tools designed to tear away caulk cleanly.
Two mode switchable scraper of this silicone caulking tool can remove any old sturdy residual adhesive glue or sealant.
The dap pro caulk 8 piece caulking tool kit helps you caulk like a pro in seconds.
Most removers work on both silicone and acrylic latex caulks.
Finally with its replaceable silicone trowel pads it can affix the new caulk layer by removing bumps dents off the surface.
For multiple layers of caulk needle nosed pliers might work best.