Pablo MILWAUKEE

Underside: sprayed a couple cans of wide gap foam spray into the area. I hit around where the added 2x4s touch the underside if the shell. Surface inside tub: drilled small holes at the end of each crack for relief. Then, I got an acrylic tub and shower crack repair kit....mixed that stuff up, How long has your repair lasted? The spray foam meant as additional support to the 2*4s contacting the underside and not to stop the leak, right? So you really only sealed from the inside of the tub. My leak is between two fiberglass areas of the tub where the filter joins the main tub at one corner. I am hoping there's a high temp silicone caulk I can put in the underside gap.