jointing tape

Hi, I have some heating pipe in copper which sit on a vertical chase through my internal brickwall. How would you normally close it dowm? Is there any special product you use to avoid any future crack? I was thinking to use gypsum bonding to fill up the chase on the brick and then some joint...

Couple of questions on same topic. When boarding up to an existing wall or ceiling what do you do about skrimming? Can I use jointing tape which will be covered on the new wall by the skim and on the existing wall use easifill to hide the tape edge? Where I have existing cracks where walls...