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Originally Posted by cscmc1
Funny this would come up just now. I see SRJ's comments re: resistance to mold. Anyone else care to comment on the best mold-resistant caulk? The caulking I did in our bath/shower has lasted a year and already has permanent black mold (and yes, we clean regularly). I need to tear it all out and start over. Grrrr...
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This is par for the course. My residence's tiled floor to ceiling master bath shower stall is a black mold "test capsule." It's freakin' maddening to be in the biz and still not be able to conquer the black stuff. Grrr.....
So, let's look at the RV and commercial construction industries for a moment...... My over-the-road diesel motorcoach (yes, it is a coach, has a motor in it, and is diesel powered) has some approximation of the GE Silicone II clear caulk on it's exterior seams/joints. The exposed caulk joints themselves discolor from road grime, asphalt residue, etc. It is impossible to scrub the discoloration out of the caulk. However, the interior fiberglass shower stall of the coach has off-white colored, W I D E butyl joints that are A) pliable, and B) NEVER discolor. They are in effect - friggin' bulletproof. Same with the butyl composition W I D E joints that I encounter in the concrete expansion joints, and directional surface changes used in commercial construction. terry allison or walgamuth could probably call one of their former/current GC (General Contractor) buddies, or, a specifier or specifying studio they have/has used to source this colored butyl material, for construction. It is packaged & dispensed in large caulk tubes for the jobsite. I guarantee you that the butyl may likely last longer than the home itself.