What is an oxygen barrier? Comments Off on What is an oxygen barrier? 18 Jan 2016 Vote Up 0 Vote Down Answered Public Underfloor Heating asked January 18, 2016 What is an oxygen barrier? 1 answer Vote Up 0 Vote Down Public ⋅ January 20, 2016 It is a pipe that is manufactured with a barrier on it to prevent oxygen form penetrating your system as oxygen is detrimental to your system #1 Please login or Register to Submit Answer