underground pipes Home › Forums › Public Forums › General Plumbing › underground pipes This topic has 1 reply, 2 voices, and was last updated 23 years, 3 months ago by Guest. Viewing 1 reply thread Author Posts 31 Dec 2000 at 1:42 am #274282 MasterPlumbersKeymaster I want to run central heating pipes from a boiler in a garage to a house about 15 ft away. How should I protect them? Is copper or plastic best ? 31 Dec 2000 at 2:21 am #289498 GuestParticipant If yuo run a cable abot 9 feet up from won building to th other, you can suport a tubing from the cable and then cover it with isalation or you can buy pex tube in a big inslated tube and bury them some feet deown. Author Posts Viewing 1 reply thread You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In