When CW welded the frame under the chin,so when the cap was off,I went to HD and bought the pink stuff and added extra strips.Thats is when I thought could we blow stuff in I would think one would have calulate the area to be filled yes?. Also pumped foam in the can all around the hich were it goes into the cap.
One of the other thing I did was bought the sheets of white insulation and lined the basement ceiling.Another thing buy the pipe wrap for the hot and cold Plex pips in the belly (I had to drop the belly to change gate valve anyway) and basement behind the walls.Saves heat loss at the shower i could push it up behind the wall to the taps.
