Product Announcement from Pittsburgh Corning (FOAMGLAS® insulation)
No metal jacket required? Perhaps. Check with Pittsburgh Corning for information on the Terostat coating, which can be used with a metal jacket or in some cases, in place of a metal jacket.
Terostat is a factory applied water repellent coating. Since it comes already installed on the pipe insulation sections, the installation on the pipe can be much more rapid than usual.