During my stint as project manager for a kitchen and bath remodeling outfit, it was my job to address any service issues. During that period, I must have pulled off miles of silicone caulking that failed to adhere to acrylic tubs and shower surrounds.

And I mean total failure. In one instance, I pulled off the silicone in the form of an unbroken, perfectly formed “gasket” around the tub. Yikes.

Anyways, we switched to using Mono Ultra, which says right on the tube: “Excellent adhesion to blah blah, acrylic, blah blah.” No more callbacks, which is good, but I’m left wondering what everyone else is using. Mono Ultra is not a nice product to spread and use.

Incidentally, I experienced this exact failure in my own house, which was frustrating. Whoever installed the acrylic tub used silicone, which didn’t stick at all.