Sorry @fumpster but I am with your husband. And agree with pps that you have probably been getting on his nerves/irritating him, with your constant chat about trivial things that he is not interested in. Constant chitter chatter from someone is incredibly irritating. Some people just cannot go thirty seconds without talking, and filling in every moment with inane chatter. I like to sit in silence sometimes, (especially if I am doing something/reading something,) and get very annoyed if the person with me won't stop talking.
It drives me NUTS when someone keeps giving a running commentary of what they are doing. Whether it's in the workplace, or wherever. Sometimes my DH is like this. I do love my him, but OMG he can really rattle on sometimes. Just talks and talks and talks about such inane drivel. (Not always, and sometimes he has interesting stuff to say, but some days he just chats shit!) 
I sometimes say 'I am putting my ipod on now so I won't be able to hear you' just to shut him up, because he just talks and talks and tells me everything he's doing... in minute detail. He also chats over what he's watching on TV sometimes. (HE is watching it, and yet he still jibber jabbers over it.) He also runs through everything that happened at his workplace... again in minute detail. Thing is, he tells me everything that happened, and then an hour later, he will start telling me again. I say 'you told me that already!' and he looks like this >
Then he says 'well I'll tell you again anyway!' 
Sometimes he even rattles on when I have my headphones in/have my ipod on, and I can only hear distant mumbling. So I ignore him and carry on reading or doing whatever I am doing on the computer.. Then I see his hand waving, and him trying to get me to look up at him, and almost every single time, it's nothing important and is always trivial shite... And like the OP, he informs me when he is doing random trivial everyday stuff in the house or garden. Like, dude, I do NOT need to know. 😂
He is not like this ALL the time we're together, but about half. Does my head in sometimes. SO yeah I do think YABU. You don't need to tell him every single thing you are doing. Just do it.
I also think - and this thread backs it up - that more MEN are guilty of always trying to fill silent moments, by chatting incessantly. Yet, women are supposedly the chatterboxes! Not anymore eh?