How To Install Pex Tubing In Floor Joists

Pull the lines up through the holes drilled in the sub floor image 1 and then run the other end to the area where the water will be coming into the home.

How to install pex tubing in floor joists. Long used in radiant heating systems flexible pex tubing is perfect for water supply lines because it s easy to run through walls and floors and simple to work with. Typical floor joist installation using 7 8 pex tubing 16 on center first it s important to remember that normally radiant floor company assumes that all heat exchanger tubing whether 1 2 pex or 7 8 pex is. Be sure to leave extra pipe on both ends of the run. The maximum allowable diameter of a hole in any solid lumber joist is one third of.

Check out our video radiant floor heat tubing installation in floor joists and read this page for a full description. Do your best to separate the hot and cold lines to minimize heat transfer. The pex tubing is positioned under the floor on slide brackets 8 inches on center with in 16 inches on center joists. Run it the length of the joist bay the space between joists to the hole in the next joist at the other end of the room.

Secure the line to the joists using clamps image 2. Wes sisco from uponor explains how uponor s pex a tubing and joist trak can be combined with slab and under floor radiant heating. 3 pull pex tubing through each hole down the length of each joist bay. The brackets allow the pex to be placed just below the floor so it does not touch and then zip ties hold things firmly in place.