Painting Tips by a Professional

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Best Caulk (All Types of Caulk)

So many types of caulk, but what is the best caulk? Let's simplify it starting with caulk for painting, then for shower, tub, sink and for masonry, metal, etc.
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We eliminated all the products that are overpriced or low-quality. So here are the professional choices-only the best caulk. Glues are below: I love glue in tubes!

First,  for the painter’s indoor/outdoor caulk. The best caulk containing silicon for the shower, tub, or sink comes in both   or in  . More details below.

Second, how much caulk to buy? One tube would last me 1-3 average rooms (of re-painting). We only discuss the 10-11 oz. size tubes here: none of the quart size “large” tubes you see in the photo above. Even the best caulk cannot be applied too thin: but the reason we get the good  stuff is that it does not crack over time.

For a very straight line between two colors, such as the ceiling and wall, we lay a bead of caulk in the corner. We caulk all trim/wall joints needless to say.

You cannot store unopened tubes for years: see our other post about how to do the caulking, how to buy the right caulk gun and how to load a caulk gun.

Painting or sealing tub/sink/shower?

(Below there is more such as masonry, butyl, etc)


Note that caulks with silicone, even paint-able ones, take longer to dry than non-silicone. Check the specs before using outdoors: many of the best caulks are suitable for both interior and exterior.

The #1, go-to product I have used all my life is here at a very good price: the painter’s indoor/outdoor caulk   .


My 2nd favorite is Alex Plus: it’s the same as the one above but has a longer life and more flexibility, (because it has some silicone, which therefore takes longer to dry): it comes in        

Just painting a small room or a few cracks? Hand squeeze tubes are the way to go:



If it gets wet, go the full monty: silicone caulk (our pick can be painted, but does not have to be painted). Even the best caulk made of silicon is toxic: read the warning section at the bottom!

Use the best silicone product today: paintable Gorrilla (company website). This is the very best caulk for silicone caulking applications on the market. It comes in   or in   For cracks beyond help, try   These do last. Look around for other colors if your tub is not white.



How much to buy? One hand squeeze tube will do a tub if your cracks are small. Don’t use to replace grout.
Have a big tub or shower? You’ll need a full tube or several hand-squeeze tubes.


Sidewalk cracks? Save your mothers’ backs with concrete caulk:   It keeps water out of your pavement to extend lifespan.

Grout? Comes in 3 colors:  

Butyl Rubber caulk is suitable for always-wet applications – just  

Custom color:   I’ve never tried it. Let me know if it works out? Thanks

More? You bet. Epoxy, rubber, resin, steel, yes, steel. It goes on and on. Very rare that you will need any of these, but…they are listed here. Any questions? I’ll try to help.

4. Glue comes in a tube: ba-da-boom. Genius.

I use these two:  yeah baby. (this is not the expanding when wet type)…and…

 and is the best deal in glue.

Summary: When I was young my first employer taught me about the best caulk. If you have any questions about how to use a caulking gun or anything else, let us know in the comments.

You also need a good caulking gun, we recommend one of those:

Product nameRatingPrice

Silicone caulk warnings:

  • You only need silicone where you splash water: most are very toxic and difficult (messy) to use, and where you have porous surfaces (it does not bond well). Use gloves, please wear a respirator: very important – the best respirator is linked in Part 7, below) and open windows.
  • Some people use   to keep the bead of caulk small: that is good if you are new at this.
  • You usually do need to use silicone for glass, tile etc, but you should know that it is quite hard to remove after it cures.
  • Let fresh silicone caulk dry overnight, 24 hours before using the shower cured and 100 percent waterproof. Even fast-drying products should be given 6-12 hours to cure before using the shower.
  • Silicone caulk is very sticky and cannot be washed up with water. Use rubbing alcohol* to clean up before it dries. Full rubber gloves are a good idea as it sticks to hands like glue. *Read label: some types use paint thinner/mineral spirits to clean up.
  • Open windows and doors near the caulk you wish to cure faster and keep the area warm. You can set up fans and/or dehumidifiers too.
  • There is more under Section #1: “How to use caulk gun”. Look for How to use a caulking gun in a shower?

5. Bonus: doing the job with no gun

If you are just doing this once and you don’t want to buy even the lowest priced caulk gun out there: yes, you can get by. You can buy caulks in a toothpaste type tube   and of course   So you really do not need to know how to use a caulking gun.

These small tubes are a bit more expensive for what you get, but it is a good thing to have around. There is a construction grade glue as well.

Please see my video below for what to do if your nozzle becomes clogged beyond saving: you don’t have to trash it!

Ok fun time.

How to use the caulk gun you make yourself
How to use caulk gun you make yourself

How to use caulk gun you make yourself (and this is in the video below). Use a T-shaped stick (such as the handle of a hammer): Put the stick into the back of the tube and just push the caulk out by pulling the tube back into your shoulder or chest! That’s how to use a caulking gun with no caulking gun!


Any questions? Email us.

Video 1 of 2

How to use a caulk gun

Video 2 of 2
How to use a caulking gun: the actual process of laying a bead of caulk:

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