Reddit mentions: The best flooring adhesive remover

First off, i seriously doubt it is caulk (in the traditional sense). I t is most likely a contruction adheasive. From the looks of it, probably Power-Grab. This is a polyurethane adheasive that is pretty much permeneat. You could try a caulk remover, but it may not do much. The one I linked is water based so it's probably a bit milder than some of the other (more effective) removers like McKanica. Realistically, those adhesive can be dissolved though. The manufacturers basically recommend using a thin wire to 'cut' the adhesive free. I would try the plastic razor and heat. You MIGHT be able to soften it some with mineral oil which will also give the benefit of lubricating your razor. Good luck!!!

>can I just add new caulk on top of the old cracked painted stuff while the tub is filled with water and call it a day?

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No you can't. If you try to add caulk on top of that, it'll look like absolute shit.

Use this to remove the old caulk: https://www.amazon.com/ALLWAY-TOOL-CT31-Caulk-Tool/dp/B004BGAER8/ref=pd_lpo_vtph_60_bs_t_1?_encoding=UTF8&psc=1&refRID=0KXKZVQRM0Q7PMYDZSTD

If it's really hard to remove, you can use some of this to losen it up and make it easier:

https://www.amazon.com/3M-Caulk-Remover-8-oz/dp/B000H5VNG8

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When you recaulk, make SURE that you use caulk rated for bathrooms (it'll say on the tube). It needs to be silicone caulk. Not latex. If it's not specifically rated for bathrooms, it WILL get mold on it.

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>I am worried this won't be enough though. I have never seen a tub with just drywall above it like this. So my next question is what are my options if caulking is not enough?

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It should be enough if you're not showering in the tub, or bathing kids in there. A grown up isn't going to splash the water up that high.

If you want to waterproof it more, and then tile, without making a height difference, use this:

https://www.amazon.com/CUSTOM-PRODUCTS-LQWAF1-2-Redgard-Waterproofing/dp/B000NZ73SE/ref=sr_1_1?s=hi&ie=UTF8&qid=1535824995&sr=1-1&keywords=redguard&dpID=51Zf43NjFPL&preST=_SY300_QL70_&dpSrc=srch

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It's a paintable waterproof membrane. Just paint it on (two coats) and it'll form a layer of 'plastic' protrecting the drywall. Then you can tile right on top of it. Use actual tile set and NOT mastic glue for the tiles. Mastic will grow mold.

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If it's not caulk, this suggestion won't help, but I recently used 3M caulk remover to get the gunk off after we removed (horrible, hideous, ugly) metal shower doors. You squirt it on, let it sit for awhile, and then come back and scrub it off. It took some elbow grease, but it worked pretty well.

Whizzy Wheel Car Decal and Sticker Remover with Drill Adapter Kit https://www.amazon.com/dp/B00FJF0O2K/ref=cm_sw_r_cp_apa_i_9JqmDbXMBJMVK

I've had really good luck with these. You can get much more aggressive without damaging the finish.

Whizzy Wheel Car Decal and Sticker Remover with Drill Adapter Kit https://www.amazon.com/dp/B00FJF0O2K/ref=cm_sw_r_cp_api_i_sTNmDbM3E6BNS

This made the job on mine SO much easier.

Here's another grout tool:

ABN Carbide Tip Grout Removal Hand Tool, Soft Grip & Reversible Triangle Blade for Detail Work https://www.amazon.com/dp/B01KN0FDL2/ref=cm_sw_r_cp_api_zBHlybZ1VRAXN

I used these to remove hundreds of square feet of decals off my 5th wheel, they are amazing and I wish I found them sooner. Doesn’t hurt the finish at all.

Whizzy Wheel

My vinyl guy gave me one of these: https://smile.amazon.com/Whizzy-Wheel-Sticker-Remover-Adapter/dp/B00FJF0O2K to remove my decals, but mine were older. Also, these: https://smile.amazon.com/Ehdis-Visibility-Plastic-Scraping-Windshields/dp/B01HLWB0BM for scraping. Acetone and/or alcohol to remove any residue. This will also remove wax, so re-wax when you're done.

If you do have a shadow, try Hops143 polishing, but I think I'd skip the Heavy Duty compound. Try a small area with just the Finesse-It first, and see if that's satisfactory. You don't want to create more work for yourself, and it doesn't look oxidized. Here's more than you ever needed to know about compound/polish/wax - https://www.sailnet.com/forums/gear-maintenance/52772-tips-compound-polish-wax.html

Have you tried one of those bumper sticker removal wheels you chuck in a drill?

https://www.amazon.com/DocaDisc-Decal-Removal-Eraser-Wheel/dp/B074N7GDS6

They are supposedly meant to remove 'em off of cars and paint without damage, at least that's what I've heard!

Did my tub using this - helped quite a bit with the scraping.

(Insert your own "big, hard caulk" joke here).

https://www.amazon.com/Wheel-Pinstriping-Removing-Diameter-Whizzy/dp/B00FJF0O2K

those will do the trick, just need to be careful so you dont burn the paint

https://www.amazon.com/Whizzy-Wheel-Decal-Remover-Adapter/dp/B00FJF0O2K

grout removal tool

Haven’t tried it, but saw this

Whizzy Wheel Car Decal and Sticker Remover with Drill Adapter Kit https://www.amazon.com/dp/B00FJF0O2K/ref=cm_sw_r_cp_api_i_WMXjDbNQSV8ZH

https://www.amazon.com/3M-2153DC-NA-Caulk-Remover/dp/B000H5VNG8

Ive used one a few times:

(https://www.amazon.com/Whizzy-Wheel-Sticker-Remover-Adapter/dp/B00FJF0O2K/ref=sr_1_3_sspa?keywords=3m+eraser+wheel&pd_rd_r=0a9f7541-1a45-45ff-b163-c6cfab173a0e&pd_rd_w=dQLT6&pd_rd_wg=DYqgw&pf_rd_p=7be70e42-b5c0-4077-873a-35a472a6fbd4&pf_rd_r=TN1R5CFFCVTP7YSH9NFG&qid=1569271761&s=gateway&sr=8-3-spons&psc=1&spLa=ZW5jcnlwdGVkUXVhbGlmaWVyPUEzUEs2R1pMWkdYQ1o1JmVuY3J5cHRlZElkPUEwNjM0MTAxMkpLN1hVUFcyTlQxSSZlbmNyeXB0ZWRBZElkPUEwODk5MDg0TkZNTzVXR0RSSVhFJndpZGdldE5hbWU9c3BfYXRmJmFjdGlvbj1jbGlja1JlZGlyZWN0JmRvTm90TG9nQ2xpY2s9dHJ1ZQ==)

They make a big mess (imagine using a pencil eraser x 1000), but get they job done. They mark up the wall a little, but not enough you should have to patch it.

Color match can be a bitch of a job (and pricey to get it done right unless OP can get a deal on a vinyl wrap), if they threw chrome centre caps on and blacked out the lighting it could work well with the chrome since he has the gloss black wheels.

The chrome/white lighting just never looked right on anything but the white and silver trucks imho.

Debadge +1! Get some fishing line with a blow dryer to remove them, then power polish. I used this thingy to get any glue residue off: https://www.amazon.ca/dp/B00FJF0O2K/

I took my time gathering a the parts etc. Painting was a pain and not really my forte. The decals were under a previous paint job so I used this

Car Decal Removal Tool - Whizzy... https://www.amazon.ca/dp/B00FJF0O2K?ref=ppx_pop_mob_ap_share
to strip the bike.
Worked awesome but made one hell of a mess. So I sanded and painted over a few weekends (at my GF's house) since I don't have the space for that in my suite. Took a few weeks to build everything back on the bike and add the electrical system (wire management OMG)
Pretty much everything was done in a 5'x8' storage space within my suite that I converted into a "garage" to maintain my bikes. Somehow I make it work, lol.

Assuming this is vinyl, I use one of these for decal removal at work. I then use this product for any cleanup. With those, i can strip off commercial truck door signage in just a few minutes with no paint damage.