Glass Block Window
Just had my entire house remodeled & it all started because there was a window beside the tub that kept rotting out. This time we were going to play it safe and replaced it with a Pittsburg Corning Light-Wise Glass block window. A little water does splash on it from the shower but it's not getting drenched. Three months later I noticed little spots of black mold at the bottom of the last layer of blocks (between them and the vinyl frame). Called Pittsburg Corning & surprise, they say these windows aren't to be used where they'll get wet, even though they advertise them as such (or used to, they told me they've gotten so many complaints that they now say they can't be used around moisture) I even called them before I purchased the window to make sure it could be used in my situation. But regardless, we've spent a great deal having the bathroom redone & I hate to have to take the window out. I can seal it up with silicone so I'm not too worried about that but I can't get the black out. All the blocks are caulked except the last layer and they apparently forgot to do them, this is where the moisture is getting in. I've squirted vinegar and water between the blocks hoping that changing the ph would do it. Now I've tried a mild bleach & water solution - still no change. I hate to seal it up without getting the mold out. The blocks are in a vinyl frame, almost all of them caulked together, and we've tiled around the window so I really can't get it out without causing a big problem. Anyone have any suggestions?