There are several options for radiant heating between floor joists. The two most popular are using joist trak and using pex clips. With joist trak extruded aluminum plates are placed in between the joists, and the PEX Tubing is snapped into these plates. When using pex clips, you attach the pex clips in between the joists and run the PEX Tubing through these clips.
This Blog is sponsored by SupplyHouse.com. The leader in joist trak.
.