[L124C]

Just bedded a grab rail with Butyl. It's cheap, easy to work with (much easier than caulk IMO). My question is; why doesn't anybody seem to know about it (in California anyway)? Chandleries and even a shipwright I asked drew a blank. It doesn't seem to be available in California. One Chandlery who knew what it was can't get it anymore. I bought it from an out of state RV supply on the Web. Is it toxic to make or handle? Seems pretty benign to me! I got two rolls that will last me a long long time for about $20 including shipping (the stuff is heavy!). Probably should have ordered one!