3M 5200 sealant?
Just watched a video "Sealant Instead of Thinset 7 Day Test" Kerdi Fix looks like 3M 5200. We use 3M 5200 to install underwater thru hulls on our boat. It is nicked name 3M forever. Flexible and next to impossible to remove. I'm wondering if it would work to seal banding, corner patches and membranes. Maybe the Coach could test it? They have a quick set version.


