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What do you do if the gap between top of tub and bottom row of tile is about 1/2". Can you caulk a gap that wide and deep? I have seen sanded caulk in colors. Has anyone tried that product?


While caulk is fairly elastic, it handles better under compression than tension. By filling the tub all the way, you expand the gap quite a bit. Once the caulk is applied and the tub drained, the caulk compresses. During normal use, the caulk will likely never be in tension. As you'd have to add more weight than a tub full of water, before the caulk had to ...


Depends on the tub, to some extent, and how (or if) it was bedded when installed. Acrylic, fiberglass and thin steel tubs do noticeably deform with a load, especially if not bedded (I'm a fan of the good old plaster bed under the tub.) Most cast-iron tubs don't deform to any noticeable extent.


the water pulls the tub to the position it is in when you take a bath the sides slitly deflect and it pulls down from the surround so filling is the best practice to fill the voids and have a longer lasting seal that wont leak


Well, DAP Dynaflex 230 is a great caulk, but like all other acrylic caulks that I used, they specifically state that curing time is longer in cool or humid conditions. See their TDB: Apply in temperatures above 40°F (4.44 °C). Do not apply if rain or freezing temperatures are forecasted before full cure can occur. Cold weather and high humidity ...

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