Drilling Floor Joists For Pex

Have a helper feed the line to avoid kinks and snarls.

Drilling floor joists for pex.

Where and how to drill joists for electrical cables or. If you have a 12 span and the joist is a full 12 you can drill a full 4 hole in the first and last 4. Engineered floor joists can be drilled only according to their manufacturer s guidelines the code specifies the maximum size of the holes you can drill or the notches you can cut where you can and can t place them and how far apart they can be spaced. There are very specific locations and sizes in the code telling you what is allowed.

Of walls and rim joists. When drilling through a stud be sure that each hole is at the same level so the pipe runs parallel to the floor. You can t drill a hole more than a third of the thickness of a joist in the middle third of the joist. Drill through the sill plate and sub floor for each water line.

Holes anywhere in the web area of engineered i joists except within 6 in. Drill holes with a diameter of no more than one third the depth of the joist staying 2 in. Drill a series of holes through floor joists along one end of the room where you ll be adding hydronic radiant heating. Place the bit up to the stud and slowly start the drill allowing it to build up speed.

There is a side to this that i have discussed with inspectors. If you re running pex through joists or studs drill 3 4 in. Drill a series of holes along alternating floor joists on the other end. Let s review what is wrong with this particular joist and discuss what the proper technique is for.

Away from the top and bottom. If the span requires say a 2x 10 joist spanning 12 the above rules apply. The picture above shows what can happen when an untrained plumber is working on your home. The maximum allowable diameter of a hole in any solid lumber joist is one third of.