Yes, I'm not exactly certain what's happening there. The kiln is outside (well-covered) and I'm not sure if it's critters or if it's a combination of the heat + relative humidity.
Either way, I know it's not a problem right now, but I just want to keep it from becoming a problem! So I'm just wondering if there's some kind of cement that would be good for this portion of the kiln.
Cheers!