PEX or PEX-AL-PEX
PEX (polyethylene cross-linked) or PEX-AL-PEX (polyethylene cross-linked-aluminum-polyethylene) is the only internationally approved material in RFH pipe. The pipe (or tubing) that transfers the heating fluid throughout the floor is the key component of a hydronic Radiant Floor Heating System.
An important piece of any in-floor heating system is the manifold. A manifold can deliver energy by both temperature and volume for use in areas where precise control is required on a zone-to-zone basis.